V8.9Bentley Rail Track Tutorial

Bentley Rail Track XM Edition

Working with Bentley Rail Track

Table of Contents 1 Introducing Bentley Rail Track................................................................. 1 Overview ................................ ........................................................................................................ 1 Bentley Rail Track and the Bentley Civil Product Suite Suite.............................. 2 Bentley Rail Track: What’s New? ................................................................. 2 About Your Documentation ................................ ........................................................................... 4 Product Training: Learn It Your Way........................................................... 4 Typeface Conventions Used in Bentley Rail Track Documentation ............ 6 What You Need to Know Before ore Working with Bentley Rail Track ............ 7 2 Getting Started................................ .............................................................................................. 9 Overview ................................ ........................................................................................................ 9 CAD Package Requirements ................................................................... 9 Downloading from the CD ..................................................................... 10 Downloading Across the Network ......................................................... 10 Starting Bentley Rail Track .................................................................. 10 Exiting Bentley Rail Track .................................................................... 11 3 Using Bentley Rail Track ................................ .......................................................................... 13 An Overview ................................ ................................................................................................ 13 Basic Concepts in Bentley Rail Track ......................................................... 14 Digital Terrain Model ................................ ............................................................................ 14 Types of DTM Display ................................ ........................................................................... 15 Symbology ................................ .............................................................................................. 17 Features in the DTM ................................ ............................................................................. 21 Preferences................................ ............................................................................................. 34 Locks ................................ ...................................................................................................... 45 Feature Filter Lock ................................ ................................................................................ 45 Style Lock................................ ............................................................................................... 48

Introducing Bentley Rail Track

Pencil/Pen Mode ..................................................................................... 50 Delete Ink Lock ...................................................................................... 54 Locate Graphics/Features ...................................................................... 55 Point/Element/No Snap Lock................................................................. 57 Station Lock ........................................................................................... 58 Report Lock ............................................................................................ 59 General Bentley Rail Track Review ............................................................ 59 Comprehensive Data Structure ............................................................. 59 Getting Around in Bentley Rail Track ........................................................ 65 Using the Interface ................................................................................ 65 Menus ..................................................................................................... 71 Menus and Application Add-Ins ............................................................ 72 Using the Online Help System .................................................................... 84 InRoads Suite Help Topics..................................................................... 84 4 Looking at Bentley Rail Track Workflows............................................. 87 Overview ...................................................................................................... 87 Horizontal Alignment with Regression Analysis ........................................ 87 Cant Alignment Workflow ........................................................................... 88 Turnouts Workflow ...................................................................................... 90 5 Setting Up Bentley Rail Track ................................................................. 91 Loading Your Files .................................................................................. 91 Setting Units of Measure ........................................................................ 92 Using Write Lock with Pencil/Pen.......................................................... 94 6 Creating a Geometry Project ..................................................................... 99 Creating a New Geometry Project .........................................................100 7 Importing Project Data............................................................................. 103 Importing ASCII Points .........................................................................103 Viewing Cogo Points ..............................................................................104 8 Adding Regression Points to the Horizontal Geometry Project ...... 107 Adding Horizontal Regression Points....................................................107 9 Starting a Horizontal Alignment using SER ........................................ 111 Using Horizontal Single Element Regression Analysis ........................112 Connecting Horizontal Alignment Elements Using Define Spiral .......118 3


10 Completing a Horizontal Alignment using MER ................................121 Using Multiple Horizontal Element Regression Analysis .................... 122 Reviewing the Horizontal Alignment .................................................... 127 Analyzing the Horizontal Alignment .................................................... 129 11 Starting a Vertical Alignment using SERV .........................................131 Generating a Profile Along an Alignment ............................................. 132 Using Single Vertical Element Regression Analysis ............................ 134 12 Building a Vertical Alignment using MEC .........................................139 Loading Your Using Multiple Vertical Element Connection ................ 139 13 Completing a Vertical Alignment using MERV ..................................145 Using Multiple Vertical Element Regression Analysis ........................ 146 Reviewing the Vertical Alignment ........................................................ 151 14 Creating a Cant Alignment .....................................................................153 Creating a Cant Alignment Slot ............................................................ 154 Reviewing Global Superelevation/Cant Settings .................................. 155 Defining the Cant Alignment ................................................................ 156 Using the Cant Editor ........................................................................... 156 15 Creating Turnouts ....................................................................................161 Creating a Parallel Track ...................................................................... 162 Defining Turnout Preferences ............................................................... 163 Reviewing the Turnout Library............................................................. 164 Placing Turnouts ................................................................................... 165 Making a Connection Between Turnouts.............................................. 168 Reviewing Connected Geometry............................................................ 171 Creating Vertical Geometry for Turnouts ............................................. 171 16 Using Typical Sections in Railway Design ..........................................177 17 Running Roadway Modeler in Railway Design ..................................185 Generating a Railway Model ................................................................. 186 Displaying Geometry Annotation in Plan View .................................... 190

4 Introducing Bentley Rail Track

1

Introducing Bentley Rail Track XM Edition

Overview Welcome to Bentley Rail Track XM Edition®! The latest in railway design software by Bentley Systems, Bentley Rail Track is a comprehensive design productivity tool that automates and simplifies the tasks associated with track layout. Developed using the familiar Microsoft® Windows® standards, Bentley Rail Track runs on the Windows 2000 Professional, Windows XP Profession Professional, or Windows Vista Enterprise operating systems. Bentley Rail Track lets you work in a graphic environment to create a 3 3-D D model of a railway system. These extensive features, along with additional application add add-in tools, make designing a complex raill system or simply laying out a small section of track an interactive and easy process. With Bentley Rail Track , you can continue using the computer--aided aided design (CAD) platform with which you are familiar. When starting the produ product, ct, you can select AutoCAD® D® 2004, 2005, 2006, 2007 or 2008, or you can select MicroStation® V8 2004 Edition or MicroStation® V8 XM Edition , as your CAD engine. This multiple CAD environment is a hallmark feature of civil engineering solutions by Bentley Systems.


Bentley Rail Track and the Bentley Civil Product Suite Bentley Rail Track is a member of the Bentley InRoads product suite. In fact, the Bentley Civil product suite includes six civil engineering products:

Bentley Rail Track provides advanced production tools for track layout and railway design.

InRoads provides complete solutions from field to design to construction for the transportation professional.

InRoads Site provides site design and digital terrain modeling, lot layout, and geometry for civil-works, environmental, and site-development projects.

InRoads Survey helps surveyors transfer electronic field book data into the graphics environment.

InRoads Bridge helps bridge design professionals define geometry and model complex, continuousspan bridges or simple span bridges.

InRoads Storm and Sanitary offers an integrated package for storm water and sanitary sewer design, combining the power of CAD with proven analytical tools and enhanced interactive graphics.

Bentley Rail Track Suite bundles together all of the features of Bentley Rail Track , InRoads, InRoads Site, InRoads Storm and Sanitary, InRoads Survey and InRoads Bridge

InRoads Suite bundles together all of the features of InRoads, InRoads Site, InRoads Storm and Sanitary, InRoads Survey and InRoads Bridge



InRoads Site Suite bundles together off of the features of InRoads Site, InRoads Survey, and InRoads Storm and Sanitary.

Bentley Rail Track : What’s New? In this release, InRoads offers several new commands and enhanced features. To view these new features, go to the “C:\Program Files\Bentley\InRoads Group V8.9” directory and view the “new_InRoads_v89.html” document

About Your Documentation To assist the beginning through advanced user, Bentley Rail Track provides four complementary forms of documentation: Tutorial. This introductory material provides stepby-step instructions for learning how to complete a rail design. Bentley Rail Track Suite Help. Delivered with the product in HTML format, this comprehensive online reference material consists of help topics that detail each command and dialog box parameter within the product. Bentley Rail Track 2004 Edition Reference Guide. Available, by free download (for SELECTservices customers), in PDF format. This document contains all InRoads help topics. It is available to all customers in printed from by purchase only.

7


Product Training: Learn It Your Way In addition to the documentation provided with your software, the Bentley Rail Track product suite, in conjunction with Bentley Institute, offer various levels and methods of product training.

Classroom Learning Led by experienced Bentley instructors, classroom learning is offered through scheduled courses at Bentley training facilities or as account-specific training in your office or nearby training facility. For training facility information or a complete listing of training courses, visit the Bentley Systems website at http://www.bentley.com/en-US/Training/. Standard InRoads product suite courses include: Bentley Rail Track Fundamentals InRoads Fundamentals InRoads Road Basics InRoads Storm & Sanitary Fundamentals InRoads Survey Fundamentals

Training Subscriptions Bentley Institute offers a variety of training programs that make it easy for any individual or organization to get professional training. Organizations can increase return on investment and train more people through the annual training subscription programs, Bentley LEARN (http://www.bentley.com/en-US/Training/Learn/) and Enterprise Training Subscription (http://www.bentley.com/en-US/Training/ETS/). .

OnDemand eLearning 8 Introducing Bentley Rail Track


OnDemand eLearning delivers professional training to every desk through recorded interactive courses and lectures. Hundreds of hours of OnDemand eLearning courses are available to Bentley LEARN and Enterprise Training Subscription users.

Distance Learning Live, instructor-led distance learning is taught by experienced Bentley instructors via the Internet. Distance learning is available through scheduled courses or as account-specific courses tailored to your workflow.

Typeface Conventions Used in Bentley Rail Track Documentation ALL CAPS

Keyboard keys If keys are separated by a comma, press them in sequence. For example: ALT,F5. If they are joined by a plus sign, press them at the same time. For example: CTRL+z.

Bold Unserifed Type

An item in the graphical interface, such as the title of a dialog box or a tool. Paths through menus use right angle brackets between items you click. For example: Click File > Open to load a file.

Courier Type

Information you type. For example: Type breaklines.dat in the dialog box field.

Italic type

A document or section title, the first occurrence of a new or special term, directory and file names, or information about what the software 9


is doing. For example: The civil.xin file contains preference settings.

What You Need to Know Before Working with Bentley Rail Track While Bentley Rail Track is a comprehensive design package, it is also an intuitive product in which a new user could become productive in a short time with some assistance. The documentation and tutorial in Bentley Rail Track assume that you have: A basic understanding of the computer operating system The ability to move around in the Windows environment Working understanding of your CAD system General knowledge of engineering concepts and terms


2

Getting Started

Overview Bentley Rail Track can be installed on Intel Intel-based hardware using the Microsoft Windows® 2000 Professional (SP4 or higher), Microsoft Windows XP Professional x32 Edition (SP2 or higher) or x64 Edition, or Microsoft Windows Vista Enterprise x32 Edition or x64 64 Edition operating system. The following instructions assume that you have already installed one of these operating systems on your machine. You must also have installed CAD software on your machine. Bentley Rail Track will run on MicroStation V8 2004 Edition, MicroStation V8 XM Edition (Version 08.09.03.48 or higher), AutoCAD 2004, AutoCAD 2005, AutoCAD 2006, AutoCAD 2007, or AutoCAD 2008. The InRoads Group does not support AutoCAD as the platform on a 64 bit operating system.

Starting Bentley Rail Track Once you have successfully installed the software, you are ready to start the product. 1. From the Start menu, click Start > Programs > Bentley > InRoads Group XM > Bentley Rail Track. 2. MicroStation users must first select a design file. Navigate to a design file or demonstration directory and select a file or create a new one. Getting Started 9


AutoCAD automatically opens with a default drawing file at startup. The Bentley Rail Track k menu is displayed in the Explorer.

You have successfully installed Bentley Rail Track, selected your CAD platform, and opened a drawing/design file.

Exiting Bentley Rail Track To exit Bentley Rail Track and leave the CAD software running, unning, select File > Exit from the Bentley Rail Track menu. To exit Bentley Rail Track and the CAD software, select File > Exit from the CAD main menu. If you exit the CAD software prior to exiting Bentley Rail Track, the product will also exit. You are prompted to save any open files.

10 Getting Started

3

Using Bentley Rail Track

An Overview From project definition to final railway design, Bentley Rail Track provides the tools you need to create complex horizontal and vertical alignments with advanced functionality, such as single and multiple eleme element regression analysis. In addition, Bentley Rail Track allows you to create various types of turnouts and to connect these geometries to create horizontal alignments. The rail cant commands not only support typical steel wheel on steel rail systems, bu but also magnetic levitation systems. Bentley Rail Track provides several add add-in in applications that facilitate the completion of additional rail and civil engineering production tasks. Starting with geometric, alignment, and surface point data, you can do th the following: 1. Graphically represent the base map ground surface, topographic features, and property boundaries. Display and analyze surface contours, slope vectors and other terrain data. 2. Review existing or legacy plans to identify new controls. Through a an iterative process, generate preliminary plan sheets, create new horizontal and Using Bentley Rail Track 13


vertical alignments, spe specify roadway template criteria, cut/fill conditions and roadway definitions. You can also compute volumes, check the design and generate reports. 3. Generate nerate a 3 3-D model of the design. Generate crosssections, compute triangle volumes, calculate end endarea volumes, make modifications, and redesign as needed to meet specifications. 4. Prepare and plot plan and profile drawings. Generate final reports for production requirements or customer deliverables. The results of your project can be stored for future use and integrated with other Bentley Systems civil engineering and GIS industry solutions.

Basic Concepts in Bentley Rail Track There are a few concepts to review prior to using Bentley Rail Track. Some of these concepts are tools that provide more flexibility in the way you work, such as customized toolbars. Others are simply ways of thinking about features, preferences and symbology: how they interact with each other and how they function within the DTM. The next several topics discuss basic concepts in Bentley Rail Track.

Digital Terrain Model A computerized model of a 3 3-D ground surface is a visual representation of triangle and point data. This data, in x,y,z numerical coordinates, defines the Digital Terrain Model (DTM), also commonly referred to as a surface.

14 Using Bentley Rail Track


In Bentley Rail Track, the DTM remains an integral and important part of your project. Feature data resides in the DTM and profiles, cross-sections, volumes and other design analysis and computations are performed on the data in the DTM. This functionality allows you to place features, execute commands, view surface properties, make design modifications all in the design surface. The DTM requires fewer interactions with graphical menus and dialog boxes while expanding the function and definition of the traditional design feature.

Types of DTM Display In the Bentley Rail Track project, surface representation and features can be displayed in three different views or modes: 3-D Planimetric, Profile, and Cross Section. •

3-D planimetric view, commonly referred to as plan, is a top-level aerial view of the entire surface. Using Bentley Rail Track 15


This view allows you to see any of the point types (random, breakline, contour, and so on) in the digital terrain model. •

Profile is an extracted side view of the vertical elevation of a surface along an entire active horizontal alignment (or just a portion of it). A legend, correlating surface line symbology, surface name and the scale used on the profile, can also be displayed.

•

Cross Section is a portion of the roadway model at a specified location. Displayed in individual graphic windows, each section shows surface configurations perpendicular or at a skew angle to a linear feature,



such as the horizontal alignment (often the centerline of the roadway). Cross sections differ from profiles in that they show detailed sections of the surfaces, from one station to the next transverse to an alignment; profiles show surface elevations longitudinally along an entire alignment.

Together, these display modes allow you to view, evaluate, and design your project from various important perspectives. Objects in the DTM can be represented in one view or all of these views.

Symbology Symbology (line style, weight, color and so on) can be defined for any surface object or feature. Uniquely specifying symbology for objects or features allows for quick identification within the model as well as uniformity across the project. In Bentley Rail Track, symbology can be set in two ways: named symbology using the Named Symbology Manager and basic command-level symbology.

Named Symbology with Symbology Manager The Tools > Named Symbology Manager allows you to define and name symbology settings for surface objects and features. These settings, along with many other preference settings, are stored in the civil.ini preference file. This customizable file contains basic default settings, including predefined symbology, and is delivered when you install Bentley Rail Track. These predefined symbology settings are displayed when you access Named Symbology Manager. Using Bentley Rail Track 17


By clicking New, you can define additional symbology.

New symbology is first given a name.. Providing a name allows you to associate the symbology with a feature or object and later reference the symbology by this name.



By double-clicking on an item or selecting the item and clicking the Edit button, you can set symbology for lines, text, and points in one or all three of the views.

Once you have defined symbology for more than one representation (line, point or text) or for more than one view (plan, profile or cross section), you actually have a Using Bentley Rail Track 19


set of symbology. In the Named Symbology Manager, you create named symbology sets.

Defined symbology is considered initialized after you click OK. Default symbology applies when specific symbology for Plan, Profile or Cross Section is not defined. If default symbology is not defined, the system settings delivered with Bentley Rail Track will apply.



Named symbology can only be created and modified using the Named Symbology Manager command.

Command-level Symbology While Bentley Rail Track provides the opportunity to name symbology, you are not required to do so. You may continue to select local symbology at anytime during the project by double-clicking the objects in the symbology list. For example, Surface > View Surface.

Once you have selected symbology for a specific command, the settings can be saved to a preferences file for future use.

Features in the DTM In Bentley Rail Track, features are key to the design process. A feature, is a unique instance of an item or 3D entity that is represented in the DTM by lines, points, or text. A line is actually a linear segment. Points can be represented as symbols or cells. Annotation is considered text. The following are examples of common road design features: •

A single random point

•

A single interior boundary

•

A flowline

•

A single curb line

•

A single utility (pipe, pole, manhole)

•

A collection of utilities (poles, manholes)

Using Bentley Rail Track 21


A feature then is any single component that is part of the DTM. Further, for features such as random points, you can store more than one random point feature type in a DTM. This flexibility allows you to control the display of the random points in the surface separately from other features, such as manholes. In Bentley Rail Track, features can be created or imported into the DTM with a level of “intelligence”; that is, they know what they are and how they are to display.

Intelligent Features Whether you begin your design by using Surface > Design Surface > Place Feature or File > Import > Surface, you can indicate what a feature is befo before it becomes a part of the active surface. You can provide a feature name and description, select a feature style, indicate the point type, and specify whether or not it is to be triangulated.



All of this information is associated with the feature and available for quick reference once it becomes a part of the surface. The key to working with features in the surface is determining how the features will display. How a feature is represented and where it displays can be specified by a style. Feature styles are created and organized by the Style Manager.

Feature Styles with Style Manager A style uniquely defines how a feature is represented and determines the symbology for its display. Once defined, the style is one-to-many; meaning any one style can be used to display many features. For example, a feature style for centerline could be used for both the roadway centerline as well as for any other secondary road centerline. When you select Tools > Style Manager, any predefined styles currently in the XIN preference file are displayed.

Click New to create additional styles. Using Bentley Rail Track 23


A feature style controls how and where Surface Features, Geometry Features, and Survey Features are displayed throughout the various Bentley Rail Track products and commands. The syle includes a unique name, description (optional) and named symbology for each data type. You can choose a named symbology that was predefined for this feature style; modify an existing named symbology and rename it; or create a new one.

When creating a new style, you first must specify what type of Bentley Rail Track data that style will be used 24 Using Bentley Rail Track


for (surface features, geometry elements, or survey features). When you look specifically at the surface feature settings, you will define how the feature is to be represented in the graphic view (as a line segment, point, annotation or attached tag). For example, to see the features using this style displayed in cross section, turn on Points in the Cross Section Display section.

Newly created feature styles are listed in the Style Manager and stored in the XIN file.



Styles can be created or modified from any of the Style buttons that appear on most Surface > Design Surface commands.



View Surface Features Features that are a part of the active surface can be displayed for review. To see the features, use the Surface > View Surface > Features command.



After choosing a surface, you can select individu individual features from the list, select all of the features or click Filter to build a feature selection set to view.

Viewing Surface Features using the Feature Selection Filter



The Filter option on the View Feature dialog box is a shortcut to the Surface > Feature > Feature Selection Filter command. This command allows you to quickly specify a feature selection set.



By clicking Save As, the filtered selection-set can be saved and associated with a name for future reference.



Note: Before OK is applied, make sure the Feature Filter Lock is on. If the filter lock is not on, filters are not applied. Turn on this lock by clicking Tools > Locks > Feature Filter Lock.



When you click OK, selected features are listed in the View Features dialog box. When you click Apply, these features are displayed. Once features are in the surface, you can display and modify feature properties.

Feature Properties The Surface > Feature > Feature Properties command allows you to edit feature properties. Use this command to change the feature name, modify the description or style, and set the criteria for triangulation. You can take action against all features in the surface, against a filtered iltered feature feature-selection set, or against selected features.



Once features are defined or modified and displayed, you can annotate them within the design file.

Annotating Features The Surface > View Surface > Annotate Feature command allows you to annotate features within the DTM.



Click Apply to display the annotation.

Preferences Preferences allow you to define everything from general operating parameters (li (like units of measure, decimal places to display, stationing format, and symbology) to specific instructions as to which settings apply to a particular design surface. In Bentley Rail Track, preferences are now a flexible system that could be considered as a single group of information that is simply defined in four different ways: Preferences

Basic Preferences

Preference Manager

Surface Preferences

Preferred Preferences

Basic Preferences Basic preferences are settings that are defined at the command level. These values are set on the individual command dialog box loca located ted on most Bentley Rail Track menus.



Basic preferences govern general operating parameters such as units of measure, stationing format, decimal places, local symbology, and so on.



Settings that have been selected across the various tab options can all be saved to a preference set. Preferences are stored in the XIN file. When you want these configured settings for a particular design session, you can load the saved file from the Preferences dialog box. At start up, all available preference files currently in the XIN are listed here:



You can create or modify basic preferences at any time from the Preferences dialog box.

Preference Manager You could set basic preferences for every command under each Bentley Rail Track menu, as previously mentioned:

Or, you could globally set all of these values (in addition to other detailed settings required by some commands) in one place at one time, using the Tools > Preference Manager command. Preference Manager now acts as the global editor that allows you to specify preferences across Bentley Rail Track.



In Preference Manager, begin by entering a Preference name. Here, you could type a unique name for a new preference set, or you could select an existing preference set from the list (any setting change will modify the set).



Notice that in the Status field, it is indicated whether or not a preference object has already been defined for this preference set (either at the command dialog box or in Named Symbology Manager). If initialized is displayed, preferences for the object have already been defined; however, you can modify the settings here and associate them with the new preference set. This is helpful if you want to standardize preferences across a design session or meet a specialized customer deliverable.

To set preferences, double-click on an object.

Individually set each value for an object:



Or, you can select a named symbology. If you choose a named symbology, the values previously defined in Symbology Manager populate the dialog box:

You must individually save each object preference.

When you have selected and saved all of the preferences, click Close to dismiss Preference Manager: 40 Using Bentley Rail Track


Named preferences are saved and stored in the civil.ini file.

Surface Preference A surface preference is a named preference that you want to associate with a surface. When a preference is associated with a surface, all of the settings and display characteristics that were previously defined will be active for the surface. Note The Tools > Locks > Style command must be on. If Style Lock is not on, the basic preferences from the

command dialog box will apply.



A surface preference can be specified when creating a surface with the File > New > Surface command.

In addition, you can change surface preferences at any time during a design session using the Surface > Surface Properties command.



If, during a design session, you choose a different surface preference, use the Surface > Update 3-D/Plan Surface Display command to refresh the graphic display with the new preferences.

Preferred Preference The preferred preference is the default global preference set. At start up, the preferred preference is the system Default (these are selected settings delivered with Bentley Rail Track). If you have created a named preference set and desire to have it as the default, access the Tools > Options > General tab. For Category, select Settings.



When specifying a preferred preference, if the Refresh Command Settings on Preference Change toggle is on, all of the Bentley Rail Track commands that are affected by the preference change are updated to reflect the new preference settings. If a command dialog box does not have a named preference corresponding to the preferred preference, the system defaults ccontinue to apply for that dialog box.



Click Apply to activate the preferred preference.



Locks In Bentley Rail Track, there are several lock features that work together with the Named Symbology Manager, Preference Manager, and Style Manager to streamline your required interaction with the software.

For quick access to the lock commands, select Tools > Locks > Toolbar:

Feature Filter Lock The Feature Filter lock works in conjunction with the Surface > Feature > Feature Selection Filter command to automatically make available a filtered feature-selection selection set. When a selection set is created using the Feature Selection Filter command, it is given a name for future use.



Not only is the feature-selection set saved to the civil.ini file, the name assigned to the set is listed in the Feature Filter List located on the Locks toolbar.

When the Feature Filter toggle is turned on, these selection sets are now exclusively available for display without any further interaction with the Feature Selection Filter command dialog box.



Subsequently, when the Surface > View Surface > Features command is selected, only those feature types specified in the selection set are available for display.

Click Apply to display the features in the surface. Or, you could use the Locate button to identify features (of the filtered type) by datapoint in the surface. Note: When the Feature Filter lock is off, defined feature

selection sets are not available or applied.

Feature Highlight Lock When the Feature Highlight lock is turned ON, any commands that include a feature list field highlights the feature in plan view when it is selected in the list. While this primaril primarily affects Surface commands, it also applies to Evaluation commands that include feature lists.

Style Lock 48 Using Bentley Rail Track


The Style lock works together with Preferences, Preference Manager and Feature Style Manager to automatically display global preference settings and defined features styles. As previously detailed, preference settings are defined at the local command dialog box or globally in the Preference Manager. Feature styles are created and named using the Tools > Style Manager > New command, and are listed in Feature Style Manager. Once preferences and feature styles have been defined, you can turn on the Style lock toggle to have these settings automatically display during the design session, without any further interaction with command dialog boxes.

When the Style lock is on and a command is selected, data preferences are active and displayed; no dialog box is presented. When Style lock is off, each time a command is selected a dialog box is presented allowing you to define display preference and style. This command allows you to reduce required interaction with Bentley Rail Track commands.

Pencil/Pen Mode The Pencil/Pen modes allow you to write to the design/drawing file in either temporary or permanent form. This idea is similar to drawing on a sheet of paper with pen or pencil. When writing in pencil, you can quickly erase a drawing to remove it. In contrast, writing in ink (pen) is a more permanent form that must be deleted to be removed. Similarly, in Bentley Rail Track graphics written in pencil are not retained between iterations of display, and graphics written in ink are retained each time the object is displayed. Using Bentley Rail Track 49


For example, if you turn on Pencil mode and select the Bentley Rail Track Surface > View Surface > Perimeter command, the graphic is displayed and written to the CAD design/drawing file.

Then, using a CAD manipulation command, such as Move you reloca relocate the graphic. Next, select Surface > View Surface > Perimeter to display it again. The previous graphic is “erased” and only the most recent graphic appears. The Pencil/Pen mode that is active when the graphic is initially displayed determines whe whether ther or not it is erased when it is redisplayed. Note



Graphics written in Pencil mode are retained only until the next time the same graphic is selected for display. During a design session in Pencil mode, there may be an occasion where you do not want pencil graphics to automatically be erased. To override this action, select the Tools > Options > General tab. For Category, select Settings and turn on the Omit Automatic Graphics Refresh toggle. All graphics, written in pencil or ink, will be retained until you manually delete them. Note

In contrast, if in Pen mode you select Surface > View Perimeter, the graphic is displayed and written to the design/drawing file.

Then, using the CAD Move command, you relocate the graphic. Next, select Surface > View Surface > Perimeter again. Both graphics appear. The first is retained because it was written in ink, the second appears because it is the most recent.



All graphics written in Pen mode are retained until they are deleted. Graphics can be manually removed using the CAD Delete command or by activating the Bentley Rail Track Delete Ink lock.

Delete Ink Lock The Delete Ink lock is available when Write lock is on. Turn on this toggle to quickly remove all graphics that were previously written in ink. For example, if you have three iterations of a graphic that was writ written ten in ink, all three graphics appear in the design/drawing file.



Then, if you turn on the Delete Ink lock and select the command again, only the current graphic is displayed.

All of the previously displayed graphics are deleted. To override the Delete Ink lock, select the Tools > Options > General tab. For Category, select Settings and turn on the Omit Automatic Graphics Refresh toggle. All graphics, written in pencil or ink, will be retained until you manually delete them.

Locate Graphics/Features Using Bentley Rail Track 53


During an n Bentley Rail Track design session, you create, edit and manipulate objects in two different environments: the CAD design/drawing file and the DTM model surface. Objects located in the CAD design/drawing file are referred to as graphics. Objects located in the DTM model (design surface) are referred to as features features. The Locate Graphics/Locate Features mode lets you quickly specify the environment from which to select objects.

For example, if you toggle to Locate Graphics and select the Surface > Design Surface > Set Elevation command for a Single graphic element, you are prompted to identify an element within the CAD design/drawing file.

While remaining in the same command dialog box, you can toggle the mode to Locate Features. 54 Using Bentley Rail Track


The dialog box options dynamically change. You can now identify features in the surface.

Identify and locate individual features or select all available features in the surface. While an alignment (*.alg) is another way to manipulate objects during a design session, the geometry data in the alignment is not accessible from the Locate Graphics/Locate Features command. Note

Point/Element/No Snap Lock Using Bentley Rail Track 55


This lock is a three three-way way toggle that allows you to specify the snap mode when working with feature and geometry data. •

Point Snap. This lock allows you to snap onto any

point contained in the geometry project. This mode is helpful when placing geometry elements. For example, if you want to input point data into a dialog box, toggle this lock on and place a data point in the design file. Bentley Rail Track will find the closest point and display the point data in the dialog box. •

Element Snap. This lock allows you to snap or lock

onto any geometry element (any object that would require multiple data points to define) in the geometry project. This mode is helpful when usi using the direction, distance, length, radius, and/or angle of an existing geometry element to design a new element. When this lock is on, Bentley Rail Track snaps to the element nearest the data point you place in the design file •

No Snap. This mode disables both point and element

snap.

Station Lock This on/off lock is applicable only when the first station specified on the horizontal alignment is an odd oddnumbered station (for example example, 2+39) and you are generating cross sections, executing the roadway modeler, or generating station type reports. When this lock is turned on, Bentley Rail Track applies a given command action to the first station, and then forces all subsequent actions tto even-numbered stations. For example, if the first station 2+39 and the station interval is defined as 50, Bentley Rail Track performs the command action at stations 2+39, 2+50, 3+00, and so on. When the Station lock is turned off and the first station is odd odd-numbered, numbered, Bentley Rail Track applies the 56 Using Bentley Rail Track


command action to odd-numbered stations only (for example, 2+39, 2+89, 3+39) and so on.

Report Lock This on/off lock is used by several commands to control whether or not the output displays in a dialog box as the command calculations are performed. If this lock is off, the command processes and stores results without displaying them in an output dialog box.



General Bentley Rail Track Review While Bentley Rail Track includes expanded functionality in several areas, many of the software’s standard featu features remain.

Comprehensive Data Structure The data structure for Bentley Rail Track remains much more comprehensive than those of the CAD platforms on which it runs. It ac accommodates the intelligence needed to perform sophisticated 3 3-D design operations such as earthwork analysis, profile generation, and superelevation. Its ability to maintain double double-precision numbers is not dependent upon the CAD platform. As you place or locate design elements or coordinate geometry points, Bentley Rail Track tools accommodate double-precision precision input. Even graphical selection tools automatically snap to points and elements in your geometry project with double double-precision accuracy.

Horizontall and Vertical Alignments Alignments continue to represent longitudinal features, such as centerlines, lanes, access ram ramps, and ditch grade lines. The horizontal and vertical geometry of an alignment is designed separately, with the vertical being a child of the horizontal. There are no restrictions on how many vertical alignments you can attach to a horizontal alignment. Alignments are designed using the geometry component of Bentley Rail Track, which has an array of features for locating points and designing the curvilinear geometry through them. Bentley Rail Track automates the creation of horizontal and vertical geomet geometry. In the initial design phase, you can use a backdrop of graphics such as a DTM, aerial photo, MicroStation graphics, and so forth. You can define curve and tangents, in any order, with or without automatic spiral placement, and if you need to add spirals, als, you can do so as you define the circular curves. 58 Using Bentley Rail Track


When the rough geometry is complete, you can begin to refine the alignment. You can dynamically manipulate elements or use precision key-ins. The software provides immediate visual feedback and automatically adjusts the geometry throughout the alignment, maintaining coincidence and colinearity between all the elements where appropriate.

Templates Templates (or typical sections) remain one of the most powerful features of Bentley Rail Track’ corridor design capabilities. Contrasted with alignments, which represent longitudinal geometry, templates represent transverse geometry. Templates can consist of any combination of backbone components and possible end condition solutions for your road design. Templates can be fixed or controlled by horizontal and/or vertical geometry. When typical sections are paired with horizontal and vertical alignments and superelevation, they define the surface of a corridor. Typical sections are flexible design components--as easily applied to ditches and sidewalks as to multilane highways with superelevated curves and variable side slopes.

Evaluation Bentley Rail Track continues to provide tools to make preliminary evaluation of your model quick and simple. These tools allow you to do the following: •

Display triangles and slope vectors and view them from any angle.

•

Produce contours, cross sections, and profiles to compare original surfaces with design surfaces.

•

Compute volumes using the triangle, grid, or endarea method.

•

Produce Mass-Haul diagrams.



The Roadway Designer Roadway Designer pulls together all ooff your design data to create the corridor model. The designer places the templates from the Template Editor at the specified location and manages the transitions between them. In addition, it applies superelevation and adjusts the templates to the longit longitudinal features as necessary, as well as checks right right-of-way limits. The end result of this is a DTM containing roadway components for the proposed corridor surface. This DTM is comprised of 3 3D linear features xyz random points and components, providing a full 3 3-D model of the proposed roadway. The model features can then be displayed in the CAD design/drawing file. For simple projects, Bentley Rail Track provides Express Modeler, which produces a model quickly, with only minimal information. You onl only need to provide an existing surface, a horizontal alignment, and a single template. If you wish, you can also provide a vertical alignment, but Bentley Rail Track will use elevations derived from a horizontal alignment if no vertical alignment is provid provided.

Drawing Production Plan and profile drawings can now be easily generated from Bentley Rail Track graphics. You can create construction documents, such as plan/profile, cross sections, and detail sheets.

Reports Reporting in Bentley Rail Track is flexible and comprehensive. You can produce reports on any data that you have created or manipulated in the course of a project. Such reports might include listings of coordinate geometry points, alignment clearances, and earthwork data. Bentley Rail Track also allows you to track your design activities. You can save your 60 Using Bentley Rail Track


activities as report files or append them to other report files; they are invaluable for project documentation.

Visualization Designs produced with Bentley Rail Track can be used with visualization software to create photo-realistic images, which help your project team or client better visualize the design. Bentley Systems also complements Bentley Rail Track with a range of applications for editing and manipulating images to create photomontages or video presentations. These capabilities help you prepare presentations for nontechnical audiences.



Getting Around in Bentley Rail Track Using the Interface Bentley Rail Track utilizes the Windows Explorer environment for file management. It works like the Explorer in the Microsoft Windows environment. By either clicking the plu plus sign (+) in the square next to an item or double double-clicking on the name, a subgroup of items displays just like a directory tree. The Bentley Rail Track Explorer provides a quick view of files that have been loaded and are available in a working session.

From the Bentley Rail Track Explorer, you can “tear away” the left left-pane pane Explorer tree, now referred to as the Workspace Bar:



There are several unique advantages of the Workspace Bar. First, major objects are represented by tabs at the bottom of the view. Each tab corresponds to a particular view of the overall Explorer hierarchy. Second, by clicking a tab, such as the Surfaces, you’ll see all (and only) the surface objects in the project. Workspace Bar’s can be docked anywhere on the screen for easy access:

To return the Workspace Bar back to the Explorer, click and drag the box to the desired location:



Once you are in The Explorer, you can dra drag and drop your Bentley Rail Track data directly from the Windows Explorer. The status of the data is displayed in the bottom portion of The Explorer window.

In the Explorer, you can access additional options that are available for an entity. Fo For example, if you select (highlight) a surface and right right-mouse click, a pop-up menu appears with additional options for surfaces.

The additional options that are available depend on the entity that you select. In the Explorer, you can also access to the following shortcuts: •

Press the Insert key to activate the New dialog box.

•

Press the Delete key to delete the current item.

•

Drag-and and-drop features between surfaces.

•

Click an item to rename it.

•

Hold down the Shift key to display all the he points in a feature, not just the first hundred.



•

Review file revision data.

•

Cut and paste between fields.

•

Click File > Open then, right-mouse click to edit ASCII files, using the default text editor. For example, to open and Bentley Rail Track project file:

Review the right-mouse click menu for additional file and mailing options.



The Explorer can be moved to a convenient location on the screen and make several common tasks faster and easier.

Accepting/Rejecting Solutions If MicroStation is your CAD platform and you are using the default mouse configuratio configuration, you accept an Bentley Rail Track solution by clicking the left mouse button. You reject an Bentley Rail Track solution by clicking the right mouse button. 66 Using Bentley Rail Track


If AutoCAD or is your CAD platform, you accept an Bentley Rail Track solution by clicking the right mouse button, by typing accept or a, or by pressing Enter. You reject an Bentley Rail Track solution by typing reject or r. On both CAD platforms, you exit an Bentley Rail Track command by pressing Esc.

Using Access Control Access control allows you to share files among multiple users while controlling read-write access to the data. Using access control, you can essentially “lock” your data so that another user cannot overwrite it while you are working on it. The other user can open the data (read-only access) but cannot make changes to it while you have it opened with read-write access. Likewise, if another user has some data opened with read-write access, your only option is to open the data with readonly access. Access control works with individual horizontal alignments, the cogo buffer, and preference files. However, with preference files, you lock the entire file−not individual preferences. When you have readwrite access to a horizontal alignment, you also have read-write access to all data associated with the horizontal alignment: vertical alignments, superelevations, vertical event buffers, and horizontal event buffers. To set the access status, right-mouse click the horizontal alignment, cogo buffer, or preference file in the Explorer. When the menu appears, select either Read-Write or Read-Only. The status is reflected in the Explorer. For more information about access control, see the Bentley Rail Track Suite Help. Using Bentley Rail Track 67


Menus The Explorer contains menus that are the primary source of interaction with Bentley Rail Track.



The menu titles are intuitive to a function of the design process. They help you navigate to groups of commands used for a specific task. A small right arrow by a command indicates an additional menu with commands.

Menus and Application Add-Ins Bentley Rail Track is delivered with several additional software modules that allow you to complete specialized or advanced tasks, including data translation. To access these features, select Tools > Application Add Ins.



By default, these additional commands do not appear on Bentley Rail Track menus because they are “turned off”. However, when you select add add-in applications, menus are dynamically updated and the commands are listed on the appropriate menu menu. For example, by default the Geometry menu does not include the Horizontal and Vertical Element Add Add-In. If you select it to turn it on and click Apply, the command is dynamically added to the menu:

Add-in in applications can be turned on and off at anytime during a design session. 70 Using Bentley Rail Track


Customize Menus You can also create customized Bentley Rail Track menus using the Tools > Customize >Command tab.

This command allows you to group specific commands together on a menu. First, select the menu on which to place the commands.

Then, drop and drag the selected command onto the menu. Using Bentley Rail Track 71


The command is added to the menu.

Customize Toolbars With the Tools > Customize > Toolbars command, you can select predefined toolbars to display that provide quick access to frequently used commands. There are toolbars for specific groups of menu commands, such as View Surface.

Contours

Elevations

Features

Two Point Slope

Single Point Elevation

Gridded Model

Inferred Breaklines

Update Surface Display

Color-Coded Elevations

72 Using Bentley Rail Track Perimeter

Fit Surface


Notice that the Fit Surface command is on the toolbar but not on this particular pull-menu. The command is added here for convenience: once you display various representations of the surface, you can quickly fit the surface in the view. Note

There are also predefined toolbars for common design workflows. The commands on the workflow toolbars may not appear together on any one menu or all of the available commands may not appear, but several are grouped together on the toolbar for a specific function. If a predefined toolbar does not meet your design needs, you can create customized toolbars for unique workflows. Select Tools > Customize > Toolbars > New.

Click the Commands tab. Select commands from the list to drag and drop onto the toolbar.



With customized toolbars, you can step through the design process from surface creation to plan and profile sheet generation using a single ttoolbar. Once toolbars are displayed, they can be moved to a convenient location on the screen or they can be “docked” onto the Explorer. To dock a toolbar, click and hold on the toolbar, drag it to the Explorer and release it.

Docked toolbars rem remain in the Explorer until you delete them.



To remove a docked toolbar, click on it and drag it away from the Explorer and click the X button. Or, to remove all customized toolbars and menus, click Tools > Customize > Toolbars > Reset All.

Shortcut Keys to Bentley Rail Track Commands Use the Tools > Customize > Keyboard tab to create new keystrokes to activate Bentley Rail Track commands.

You can create new shortcut keys or modify existing ones.

Customize Macros The Text > Customize > Macros command provides access to external software programs that can be run within Bentley Rail Track. For example, you can click New to create a macro to run Notepad®, a Microsoft text editor, in a specific directory.



Click Browse to locate the Notepad executable. This automatically populates the command field. Then, specify the Argument (file on which to run the editor) and the initial directory (where the file is located).

Click Close. Now, the new macro appears in the Commands list. You can then drag and drop the new macro onto a toolbar or menu. The Button Appearance dialog box appears. Select an icon to represent the macro.

The icon appears on the toolbar. Now, double double-click the icon to start the command.



You can also use the Tools > Customize > Macros command to run advanced software programs created using the Bentley Rail Track Application Programming Interface (APIs). APIs give you direct access to the Bentley Rail Track alignment and surface data. See the Bentley Civil Help for more information on customizing Bentley Rail Track with APIs.

Exporting Custom Settings Once custom menus, toolbars and command-shortcut keys have been created, you can save all of the settings to a file for use in future design sessions. To access this command, select Tools > Customize > Export.



•

Full Export – Use this option to save all custom

settings. •

Partial Export – Turn on this option to individually

choose which toolbars to save. You may also specify shortkeys, macros or both.

Importing Custom Settings Previously defined settings can be imported for a current design session. To access these settings, select Tools > Customize > Import.

Click Browse to locate the settings file.

Using the Online Help System To display Help when Bentley Rail Track is active, click Help > Contents from the main menu.



Bentley Bentley Rail Track Suite Help Topics Bentley Rail Track is delivered with comprehensive online reference information for each command. This information is available through the Bentley Rail Track Suite Help system. The Help topics include a brief overview of the command, a detailed description of the dialog box options, and a step-by-step workflow that shows how to use the command. Bentley Rail Track allows you to design while integrated with other Bentley Civil applications. In this environment, you can access the online Help topics for these applications in addition to Bentley Rail Track Help. If Help was not installed on your hard drive during setup, you must have the Bentley Rail Track CD in the CD-ROM drive or be connected to the network node containing the Help files. Note

Click the Contents tab to display the Contents page for Bentley Rail Track Help. This page is similar to a table of contents in that it lists everything that is available in the Help files. Using Bentley Rail Track 79


Double Double-click a file to display it. After reviewing a topic, you can close it or p print it. Click the Index tab to enter a command name, phrase, or word for which to search. This page is similar to a book index with items listed in alphabetical order. As you type a word, the list dynamically updates a as the sorting feature narrows the search. Double Double-click the topic when it appears in the list, or click the Display button. Click the Search tab to access a full-text retrieval search. Full Full-text text retrieval allows you to search for specific words instead of alphabetized categories. First, the software builds a database of words from all available Help files. Once the database is compiled, you can search it for any key word. A workflow wizard steps you through this brief process. Double Double-click a located word or click the Display button to display the search results.

Bentley Rail Track Suite Help is context sen sensitive, which means that you can press F1 to display Help for the active command or dialog box. You can also click the Help button on each dialog box.


Looking at Bentley Rail Track Workflows Overview The following workflows represent typical paths you might take when designing railway projects using Bentley Rail Track. Your particular workflow may vary depending on the needs of your project.

Horizontal Alignment with Regression Analysis This workflow presents one method of creating an alignment using the advanced geometry regression commands.

Looking at Bentley Rail Track Workflows 87


88 Looking at Bentley Rail Track Workflows

Looking at Bentley Rail Track Workflows

Cant Alignment Workflow The following diagram illustrates a general workflow for creating a cant alignment.

Looking at InRoads Workflows 89


Turnouts Workflow The following wing diagram illustrates a general workflow for creating turnouts.

For detailed instructions on completing these workflows, see Chapters 5 - 17.

90 Looking at Bentley Rail Track Workflows

4

Setting Up Bentley Rail Track

Overview Bentley Rail Track provides a complete set of tools for simple track layout and comprehensive railway design. Typically, a rail workf workflow low begins with loading project files and setting working preferences.

Before Getting Started Locate the tutorial data in C:\Program Files\ \Bentley\Tutorials\ Rail. Extract RailChapter5.exe. RailChapter5.exe

Loading Your Files 1. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track” 2. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file.

3. Inside Bentley Rail Track, select File > Open. 4. Browse to C:\Program Files\Bentley\Tutorials\ \Rail and open the files ““railm_tut.xin” and “existing.dtm”. ”. 5. Click the Preferences tab at the bottom of the Explorer. 6. Click the plus sign (+) next to Preferences. The railm_tut.xin file has been loaded. 7. To the right you should see three co columns: lumns: File Name, Type, and Access Mode. Setting Up Bentley Rail Track 91


The preference file sets units of measure (imperial or metric) and the settings and layers on which everything in the design, except the geometry, displays. This file also stores all Style and Symbology information that determines how the surface features, horizontal alignment, coordinate geometry points, and closed figures are displayed. Next Next, modify the preferences file.

Setting Units of Measure Bentley Rail Track uses the units of measure selected during installation, either imperial or metric. This setting is saved in the civil.xin file. The location of the civil.xin is shown in the Explorer when you click Preferences. Bentley Rail Track starts each session using this civil.xin file. For this task, you will use metric units in a file prepared for this tutorial: railm_tut.xin. To define settings, do the following: 1. Click Tools > Options. 2. Click the Units and Formats tab. Under Units, for Linear, select Metric. For Angular, select Degrees. Click Apply.

3. Click the Geometry tab.

92 Setting Up Bentley Rail Track


4. Under Curve Definition, for Horizontal, select Chord. For Vert Vertical, ical, select Parabolic. For Measure, select Along Chord. 5. Click Apply; then click the Preferences button. 6. Click Save.

This updates the settings in the file. When the Save button is selected, the ..xin file is updated so that next time you start Bentley R Rail ail Track the settings are the same. 7. Click Close to dismiss the Preferences dialog box. 8. You’ve just modified the railm_tut.xin file. 9. Click Close to dismiss the Options dialog box.

Using Pencil/Pen Lock The Pencil/Pen lock lets you temporarily (pencil) or permanently (ink) write to the graphics file. This concept is similar to drawing on paper. Using a pencil, you have the ability to quickly erase a drawing to remove it. In contrast, graphics drawn in ink are of a permanent form a and nd must be deleted to be removed. The Delete Ink Lock command is used to remove graphics drawn in ink. These features are helpful when you want to display several iterations of a graphic until the desired graphic is displayed. Then, after comparing the objects, you can remove those not desired. 1. Go to Surface > View Surface > Perimeter. Make sure surface existing is selected. 2. Click Edit. On MicroStation, for Line Style, select 0. On AutoCAD, for Line Type, select a continuous line. 3. Click Ok. 4. Click Apply Apply. The perimeter is drawn on the screen.

Setting Up Bentley Rail Track 93


5. Make sure that you are in Pencil mode. This command is Either/Or meaning you are either in pencil mode or ink mode.

6. Using your CAD software, move the perimeter. 7. Click Surface >View Surface >Perimeter. 8. Click Ed Edit. 9. For Color, click the color palette and select a different color. 10. Click OK. 11. Click Apply, then click Close. The first perimeter was erased and the second (current) perimeter was displayed. The perimeter is written to the design file because Write lock iiss toggled to Pencil mode. Note If the graphic is not erased, click Tools > Options. Click the General tab. Ensure the Omit Automatic Graphics Refresh option is turned off. When this option is on, graphic display is not refreshed: all graphics remain displayed. 12. Toggle to Pen mode.

13. Click Surface > View Surface > Perimeter. 14. Cli Click Edit. 15. For Color, click on the color palette and select a color.



16. Click OK. 17. Click Apply. The previous graphic, written in pencil, is erased. The current perimeter is drawn in the graphics file in ink. 18. Using your CAD software, move the perimeter. 19. In the View Perimeter dialog box, click Apply again. The second perimeter is displayed. The first graphic remains because it was written to the graphics file in ink.

20. Using your CAD software, move the second perimeter. 21. Toggle to Pencil Mode. 22. In the View Perimeter dialog box, click Edit. 23. On MicroStation, for Line Style, select 2. On AutoCAD, for Line Type, select a dashed type. 24. On MicroStation, for Weight, select 1. 25. Click OK. 26. Click Apply. The third perimeter is drawn in pencil. It has a different line style.



27. Click ick Close to dismiss the View Perimeter dialog box. Pen mode allows you to display several versions of a graphic; Pencil mode only allows you to display one. 28. Turn on Delete Ink Lock.

29. Click Surface >View Surface >Perimeter. 30. Click Edit. 31. For Color, click the color palette and select a color. 32. On MicroStation, for Line Style, select 0. On AutoCAD, for Line Type, select Continuous. 33. On MicroStation, for Weight, select 1. 34. Click OK. 35. Click Apply. The two perimeters written in ink are deleted because Delete Ink L Lock ock is on. The perimeter written in pencil is removed because Pencil mode only retains the most recent graphic. The current (last) graphic is displayed.



36. Click Close to dismiss the View Perimeter dialog box. 37. Turn off Delete Ink lock. 38. Update the view. 39. From the CAD menu, save rail_tutorial.dgn or rail_tutorial.dwg. 40. Click File > Exit and then exit your CAD software, or continue to Chapter 2, Creating a Geometry Project.


5

Creating a Geometry Project

Overview Bentley Rail Track stores coordinate geometry information in a geometry project (*.alg file). As you progress through the tutorial, you will define horizontal and vertical alignments. This information is stored in the geometry project. You can save as many alignments and sets of points as you like in a geometry project. This chapter describes several processes related to the geometry project: importing coordinate geometry and creating horizontal and vertical alignments. You create a geometry project; then, within that project you will create horizontal and vertical alignments. These alignments are the basis for defining the centerline for the proposed single track.

Before Getting Started Locate the tutorial data in C:\Program Files\ \Bentley\Tutorials\Rail. Extract RailChapter6.exe. RailChapter6.exe

Loading Your Files 1. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 2. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 3. Click File > Open. 4. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 5. Select railm_tut.xin, and Click Open. 6. Click Cancel to dismiss the dialog box.

Creating a New Geometry Project. 1. Click File > New.

Creating a Geometry Project 99


2. Click the Geometry tab. 3. For the Type, select Geometry Project. 4. For the Name, type singletrack.. Press the TAB key. 5. For the Description, type track realignment project. project Press the TAB key, and then click Apply.

6. For Type, select Horizontal Alignment. 7. For the Name, type centerline.. Press the TAB key. 8. For the Description, type existing track.. Press the TAB key. 9. For Style, select Default. Press the TAB key. 10. For Curve Definition, select Chord. Press the TAB key; then, click Apply.

100 Creating a Geometry Project

Creating a Geometry Project

You have successfully defined the horizontal alignment name for the geometry. 11. For Type, select Vertical Alignment. 12. For the Name, type existing grade. Press the TAB key. 13. For the Description, type For single track. Press the TAB key. 14. For Style, select Default. Press the TAB key. 15. For Curve Definition, select Parabolic. Press the TAB key; then, click Apply.

Creating a Geometry Project 101


You have successfully defined a vertical alignment name. In the next task, you will import your geometry project data. 16. Click Close to dismiss the New dialog box. 17. Click File > Save As tto o save the geometry project. 18. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 19. For the Save as type, select Geometry Projects (*.alg). 20. For the Active, select single track. 21. For the File Name type singletrack.alg,, and click Save. 22. The geometry pro project called single track is saved. 23. Click Cancel. 24. Click File > Exit and exit your CAD software, or continue to Chapter 7, Importing Project Data.

102 Creating a Geometry Project

6

Importing Project Data

Overview In this chapter, you will import the points you need to begin a rail project. These points are used to create both horizontal and vertical alignments.

Before e Getting Started Locate the tutorial data in C:\Program Files\ \Bentley\Tutorials\Rail. Extract RailChapter7.exe. RailChapter7.exe

Loading Your Files 1. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 2. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 3. Click File > Open. 4. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 5. Select railm_tut.xin, and Click Open. 6. Select singletrack.alg and click Open. 7. Click Cancel to dismiss the dialog box.

Importing ASCII Points Once you have named a geometry project, you can load the points that will be used to create horizontal and vertical alignments. For this task, these points have been prepared for you. In a typical rail project, these points are usually collected from existing survey data. 1. Click File > Text Import Wizard. 2. For Data Type, select Cogo Points. 3. For Wizard Name, select Class Classic File.

Importing Project Data 103


4. For File Name, select the Browse button. In C:\ \Program Files Files\Bentley\Tutorials\Rail.select the rail_tutorial.txt rail_tutorial file. 5. Click OK. The file is successfully imported.

6. Click Geometry > Review Geometry Points to review the loaded points. 7. Under Mode, click All Points. 8. Click Last and ensure that the point 163, the last point, is displayed.

9. Click Close.

104 Importing Project Data


10. Now would be a good time to save the new geometry data. 11. Click File > Save > Geometry Project.

Viewing Cogo Points You can view points loaded into the cogo buffer. This allows you to see all of the points that were added before continuing the workflow. 1. Click Geometry > View Geometry > Horizontal Annotation. 2. Under Apply Style, click Assigned. 3. In the Cogo Points group box, click in the Include field and type an asterisk (*), the press the Tab key.

After the Tab key is pressed, the list of Selected cogo points will be populated will all the points in the cogo buffer. 4. In the Display group box, turn on Points.



5. In the An Annotate group box, turn on Points.

6. Click Apply. The points are displayed in graphics:

7. Click Close to dismiss the View Horizontal Annotation dialog box. 8. Using the CAD Zoom command to view the points.

106 Importing Project Data


9. Using the CAD software, fit the graphic in the view. 10. Click File > Exit and exit your CAD software, or continue to Chapter 8, Adding Regression Points to the Horizontal Geometry Project Project.


7

Adding Regression Points to the Horizontal Geometry Project

Overview In this chapter, you will use coordinate geometry points to add regression points to the horizontal alignment project. The coordinate geometry points represent data gathered from an existing survey project. Th These ese points have been imported into the Bentley Rail Track geometry project.


Loading Your Files 1. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 2. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 3. Click File > Open. 4. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 5. Select railm_tut.xin, and click Open. 6. Select singletrack.alg and click Open. 7. Click Cancel to dismiss the dialog box.

Adding Horizontal Regression Points Once Cogo points have been imported, they can be loaded into the empty alignment as regression points.

Adding Regression Points to the Horizontal Geometry Project 107


Note If you are running on AutoCAD, zoom into the graphic view on the first few points prior to beginning this task. 1. Click Geometry > Horizontal Regression > Add Regression Points. 2. For Source, select Points. 3. For Include, place the cursor in the field and enter an asterisk. The wildcard * symbol should appear in the field. This instructs the software to find and add all of the available points in the buffer. Press the TAB key.

4. In the First Po Point field, select point number 1. 5. In the Second Point field, select point number 2. By defining the first two points, you are telling the program the beginning point and the direction to conduct the point sorting. 6. Click the Advanced tab. These settings de define fine sorting criteria for loading regression points. You don’t have to modify these here; they have been predefined for this lesson. 7. Click Apply. All of the points will be selected and added as regression points in the horizontal alignment. 8. Click Close.

108 Adding Regression Points to the Horizontal Geometry Project

Adding Regression Points to the Horizontal Geometry Project

Next, ext, review the points to ensure all 163 points were added as regression points. 9. Click Geometry > Horizontal Regression > Edit/Review Regression Points. 10. Scroll down the list to review the points.

11. Click Close to dismiss the dialog box. 12. Fit the graphics in the view. 13. Click File > Save > Geometry Project. 14. Click File > Exit and exit your CAD software, or continue to Chapter 9, Starting a Horizontal Alignment using Single Element Regression.

Adding Regression Points to the Horizontal Geometry Project 109

8

Starting a Horizontal Alignment using Single Element Regression Analysis (SER)

Overview In this chapter, you will use a series of geometry commands to establish the beginning elements for a new horizontal alignment. While Bentley Rail Track provides various methods to create horizontal alignments, the single element regression method is used here to demonstrate how these unique commands can be used in a typical railway design.


Loadi Loading Your Files 1. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 2. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 3. Click File > Ope Open. 4. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 5. Select railm_tut.xin, and click Open. 6. Select singletrack.alg and click Open. 7. Click Cancel to dismiss the dialog box.

Using Horizontal Single Element Regression Analysis

Starting a Horizontal Alignment Using SER 111


Once regression points have been added to the geometry project, elements can be added to the project alignment. When working with regression points, you can add, modify and delete points using the command dialog box or by graphically selecting electing points in the graphic view. In this task, you will select points graphically in the view. 1. Delete all graphics in the design file. 2. Click Geometry > Horizontal Regression > View Regression Points.

3. Click Apply; then, Close.

Zoom in to see the ac actual points. 4. Visually review the regression points. Click Geometry > Horizontal Regression > Edit/Review Regression Points. 5. Scroll the list and multi multi-select select points 11, 12 & 13.

112 Starting a Horizontal Alignment Using SER

Starting a Horizontal Alignment Using SER

It appears that points 11, 12, & 13 are irregular. These points may reflec reflectt a survey error. In order to create the best possible alignment solution, you must take steps to reduce their influence on the present data set. To begin, you will reduce the weighting associated with these points. 6. Click the Edit. 7. For Weight, type 0.001.

8. Click Apply; then, Close. This change will not cause these points to be ignored in future analysis, however it will decrease their influence on regression calculations. For more information on the Weight option, see Bentley InRoads Group XM Help. Help Notic Notice e that the Weight value has been modified in the Edit/Review Horizontal Regression Points dialog box: Starting a Horizontal Alignment Using SER 113


Note When editing or working with regression points, as you will see in the next few steps, it’s most convenient to keep the dialog box active, but mini minimized, mized, as you work in the graphic view. 9. On the Edit/Review Horizontal Regression Points dialog box, deselect/unhighlight points 11, 12, and 13. Click the Select button. 10. Using the CAD command, zoom into the view. 11. Graphically select points 1 through 19. 12. At the prompt: Accept/Reject, accept the points.

The points are highlighted in the Edit/Review Horizontal Regression Points dialog box. Notice the Include in Analysis column is now set to yes for these points:

13. Collapse, do not close, the dialog box. 14. Clic Click k Geometry > Horizontal Regression > Single Element Regression Analysis. 15. For Element type, select Linear. This indicates that points 1 through 19 will be regressed as a linear element in the alignment. 16. For Save Order, select Last Element. 114 Starting a Horizontal Alignment Using SER


17. Click Compute.

The results of the computation are displayed in the Results field, and a slew diagram showing the magnitude of the point’s offset relative to the element is shown in temporary graphics along the element. 18. Click Save. Collapse, but do not close the dialog box. b By regressing points 1 through 19, you have added a linear element to the horizontal alignment. Next, you will move along the points to add another element. 19. Fit the view. 20. Click Geometry > Horizontal Regression > Curvature Diagram. 21. Click the Preference Preferences button. 22. Highlight curve diagram, click Load; then, Close. 23. Next, specify the symbology for the curve diagram. •

On the “General” leaf under Horizontal Curvature Diagram, turn ON Line, Points, and Text in the Symbology box.

•

Click the Axes folder, then Left folder, then the General leaf.

•

Change the Length of both Major Ticks and Minor Ticks to 0.010.

•

Click on the Symbology leaf.

•

In the Symbology box, double-click click to edit Title Text.

•

Under Offsets, change Horizontal to 0. Press the TAB key. Click Ok.

•

Double-click to edit Label.

•

Under Offsets, change Horizontal to 0. Press the TAB key. Click Ok.

•

Turn ON the check boxes for Major and Minor Ticks.

•

Click the Preferences button. Highlight curve diagram, click Save; then, Close.



24. Click Apply. At the prompt: Identify Location, place the curvature diagram to the right of the existing graphics. Close the Curvature Diagram dialog box. NOTE: If the curvature diagram is un un-readable, readable, it may be necessary to extract the railm_tut.xin from railchapter9.exe and go through steps 20 through 24 again. 25. In the curvature diagram, zoom in the view around points 27 to 52. It may be necessary to reduce the Zoom ratio to see all points in one view. 26. Uncollapse the Edit/Review Horizontal Regression dialog box. 27. Click th the Select button. 28. In the curvature diagram, select points 27 to 52.

29. Datapoint again to accept the points. 30. Notice the next set of points are highlighted in the Edit/Review Horizontal Regression Analysis dialog box.

31. Uncollapse the Single Horizontal Regre Regression ssion Analysis dialog box. 32. For Element Type, select Circle. 33. For Save Order, select Last Element. 34. Click Compute; then, click Save.



The circular element is added to the alignment.

35. Fit the view. Notice the elements in Plan view. Next, you will add the la last st three elements to the alignment. 36. On the Edit/Review Horizontal Regression Analysis dialog box, click Select 37. Graphically select points 63 to 85. 38. On the Single Horizontal Element Regression Analysis dialog box, click Circle and Last Element. 39. Click Compute; then Save. The circular element is added to the alignment. 40. Click Select. 41. Graphically select points 103 to 129. Note If you cannot graphically select all of the points within a view, remember that you can manually the select points in the Edit/Revi Edit/Review ew Horizontal Regression Analysis dialog box.



42. On the Single Horizontal Element Regression Analysis dialog box, click Circle and Last Element. 43. Click Compute; then Save. The circular element is added to the alignment. Now, add the last element in the alignm alignment. 44. Click Select. 45. Graphically select points 141 to 163. 46. On the Single Element Regression Analysis dialog box, click Linear and Last Element. 47. Click Compute; then Save. 48. Close all dialog boxes. 49. Zoom in on any portion of the alignment. Using the CAD commands, delete the displayed regression points.

50. Fit the graphics in the view.

Connecting Horizontal Alignment Elements Using Define Spiral 1. Click Tools > Application Add Add-Ins. 2. Ensure the Horizontal and Vertica Verticall Elements Add-In Add is turned on. 3. Click Ok. 4. Click Geometry > Horizontal Element > Define Spiral. 5. Select Clothoid. 6. Turn on the Replace and Fill All Gaps option.

7. Click Apply. 8. At the prompt: Identify first element, datapoint on the first linear element in the alignment.



9. At the prompt: Identify second element, datapoint on the first circular element in the alignment 10. Accept the solution 11. Continue to connect the elements in the alignment, except the last linear element. Do not connect the last linear and circular elements. 12. Reset to exit the command. 13. Fit the graphics in the view. The horizontal alignment should appear as shown:

14. Click File > Save > Geometry Project. To complete this horizontal alignment, continue to the next chapter. 15. Click File > Exit and exit your CAD software, or continue to Chapter 10, Completing a Horizontal Alignment using Multiple Element Regression Analysis.


9

Completing a Horizontal Alignment using Multiple Element Regression Analysis (MER)

Overview In this chapter, you will complete a horizontal alignment portion of a single track design using horizontal regression analysis. The existing geometry project contains an alignment from regression points.

Before Getting Started Locate the tutorial data in C:\Program Files\ \Bentley\Tutorials\Rail . Extract RailChapter10.exe. RailChapter10.exe

Loading Your Files 1. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 2. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 3. Click File > Open. 4. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail . 5. Select railm_tut.xin, and click Open. 6. Select singletrack.alg and click Open. 7. Click Cancel to dismiss the dialog box.

Using Multiple Horizontal Element Regression Analysis Begin with the active horizontal alignment. All but the final element have been created and connected in the alignment. By displaying the current elements and the original regression

Completing a Horizontal Alignment Using MER 121


points oints you can complete the alignment by creating the final element using a “best fit” through the regression points between the last two elements. Finish up this task by generating a report of the new single track. 1. Click Geometry > View Geometry > Active H Horizontal. orizontal.

2. Fit the graphics in the view. 3. Click Geometry > Horizontal Regression > Multiple Element Regression Analysis.

4. Under Beginning Element, click Select. 5. At the prompt: Identify Element, datapoint on the next-tonext the the-last circular element.

6. Under Ending Element, click Select. 7. At the prompt: Identify Element, datapoint on the last element.

122 Completing a Horizontal Alignment Using MER

Completing a Horizontal Alignment Using MER

8. Click Add After. 9. For Type, select Spiral. 10. For Length, type 240. Press the TAB key.




12. Collapse, but do not close the Multiple Horiz Horizontal ontal Element Regression Analysis dialog box. Next, display all the regression points in the alignment. 13. Click Geometry > Horizontal Regression > View Regression Points.


Before you add the spiral to make the connection, identify the points through which you will regress the element.



15. Click Geometry > Horizontal Regression > Edit/Review Regression Points. 16. Click Select. 17. Select all points between the next to last circular element that was selected as the begin element and the ending linear element. You may need to zoom in the view.

18. Accept the points. The points are highlighted in the dialog box.

19. Collapse, but do not close the Edit/Review Horizontal Regression Points dialog box. 20. Uncollapse the Multiple Horizontal Element Regression Analysis dialog box.



21. Click Free for all of the elements.

22. Click the Advanced tab. 23. Ensure the Use Regression option is on. You will regress through the points you have selected.



24. Return to the Main tab. 25. Click Apply. The message: Successful C Completion ompletion is displayed in the CAD message window. The last spiral is added to the alignment.

26. Click Save. 27. Click Report. You can save the report to a file to print it. 28. Close all dialog boxes. 29. Fit graphics in the view. 30. Click File > Save > Geometry Project.

Reviewing the Horizontal Alignment



Now is a good time to review the content of the alignment. You can review individual curves, check tangents element by element, or review the entire alignment. 1. Click Geome Geometry > Review Horizontal. 2. Under Mode, click Alignment. 3. Scroll down to view the content of the alignment.

4. Under Mode, click Element. This option displays individual elements within the alignment. 5. Click the Next button to move along the alignment. Notice that as you move along the alignment, the element is highlighted in the graphics file. 6. Under Mode, click Curve Sets. 7. Scroll down and to review the dimensions of the reverse spiral.

8. Take a few minutes to review the alignment. 9. Click Print (optional). 10. Clic Click Close to dismiss the dialog box.



Analyzing the Horizontal Alignment Rail provides several commands to graphically analyze the horizontal alignments. Next, review the connect elements within the alignment. 1. Click Geometry > Horizontal Regression > Horizontal Slew Diagram.

2. Click Preferences. 3. Select slew diagram.

4. Click Load; then, click Close. The preferences are loaded in the Slew Diagram dialog box.



5. Click Apply. NOTE: If the slew diagram is un un-readable, it may be necessary to extract the railm_tut.xin from railchapter railchapter10.exe and go through steps 1 through 5 again. 6. At the prompt: Identify location, datapoint at a clear location in the view.

7. Using you CAD command, window in on the diagram, if necessary.

8. Close the Slew Diagram dialog box. 9. Fit the graphics in the view. 10. Using your CAD software, save the rail_tutorial.dgn or rail_tutorial.dwg file. 11. Click File > Exit and exit your CAD software, or continue to Chapter 11, Starting a Vertical Alignment using Single Si Element Regression Analysis Analysis.


10

Starting a Vertical Alignment using Single Element Regression Analysis (SERV)

Overview With the location of the horizontal alignment in place, the next step in designing a railway is the definition of the design grade line or vertical alignment. Before you define the vertical alignment, you extract a profile of the original surface along the he horizontal alignment. Then, use the surface profile as a reference for designing the vertical alignment. The profile appears in the drawing file in a rectangular box, referred to as the profile window. As you add segments to the vertical alignment, tthey hey appear in the profile window. This topic covers profile generation and starting the vertical alignment layout within the profile.


Loading oading Your Files 1. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 2. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 3. Click File > Open. 4. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 5. Select railm_tut.xin, and click Open.

Starting a Vertical Alignment using SERV 131


6. Select existing.dtm, and click Open. 7. Select singletrack.alg, and click Open. 8. Click Cancel to dismiss the dialog box.

Generating a Profile Along an Ali Alignment Next, extract a profile, which represents the elevation of the surface existing along the horizontal alignment centerline. 1. Click Evaluation > Profile > Create Profile.

2. Click Preferences. 3. Under Name, sel select ect metric profile. The profile settings have been previously prepared for this topic. 4. Click Load.

5. Click Close. 6. Under Symbology in the Display column, make sure the surface existing is ON. 7. Click the Include leaf. Make sure that all options are turned of off. 8. Click Apply, and place a data point somewhere to the right of the surface existing. This location identifies the origin of the axes used in the profile generation (justified about the lower lower-left left corner), and Bentley Rail Track extracts and displays the profile at the specified point.

132 Starting a Vertical Alignment using SERV

Starting a Horizontal Alignment using SERV

The graphics in the profile show the elevation of the existing ground along the path of the horizontal alignment.

NOTE: If the profile is un un-readable, readable, it may be necessary to extract the railm_tut.xin from railchapter11.exe .exe and go through steps 1 through 8 again. 9. When you are finished, click Close to dismiss the Create Profile dialog box. 10. Using your CAD software, save the rail_tutorial.dgn or rail_tutorial.dwg file.

Using Single Vertical Element Regression Analysis Once regression points have been added to the profile, you can begin adding elements to the vertical alignment. When working with regression data, you can add, modify and delete points using the command dialog box or by graphi graphically cally selecting points in the graphic view. In this topic, you will select points graphically in the view. Begin by loading the regression points into the vertical alignment. Vertical regression points will be loaded from the regression points in the ac active tive horizontal alignment. 1. Click Geometry > Vertical Regression > Add Regression Points.

2. Click Apply; then Close. No points will be listed in the dialog box. Next, confirm that the points were loaded. 3. Click Geometry > Vertical Regression > Edit/Review Regression egression Points.

Starting a Vertical Alignment using SERV

133


4. Scroll down and confirm all 163 points were loaded; then, close the dialog box. Next, display and view the points in the profile. 5. Click Geometry > Vertical Regression > View Vertical Regression Points. 6. Click Apply; then, Close. 7. Zoom in to see the points.

Now, place elements in the vertical alignment based on the regression points. Select the first set of points. 8. Click Geometry > Vertical Regression > Edit/Review Regression Points.

9. Click the Select button. 10. Graphically select points 1 through 26. You may have to zoom in the view. 11. Accept the points.



The points are highlighted in the Edit/Review Vertical Regression Points dialog box:

12. Collapse, do not close, the dialog box. 13. Click Geometry > Vertical Regression > Single Element Regression Analysis. 14. For Element type, select Line. This indicates that points 1 through 26 will be regressed as a line in the alignment. 15. For Save Order, select Last Element.

16. Click Compute. The results of the computation are displayed in the Results field. 17. Click Save.


135


Regressing through points 1 through 26, you have added a linear element to the vertical alignment. Next, you will move along the points to add another element. 18. Uncollapse the Edit/Review Vertical Regression dialog box. 19. Click the Select button. 20. In the graphic view, select points 69 to 105. If you can’t select them all in one view, remember that you can multimulti select in the dialog box.

21. Accept the points. 22. Redisplay the Single Element Vertical Regression dialog box. 23. For element select Line. 24. For Save Order, select Last Element. 25. Click Compute.

The line is added to the alignment.

26. Click Save; then, Close. 27. Close all dialog boxes. Now is a good time to save the geometry project. 28. Click File > Save > Geometry Project.



29. Click File > Exit and exit your CAD software, or continue to Chapter 12, Building a Vertical Alignment using Multiple Element Connection.


137

11

Building a Vertical Alignment using Multiple Element Connection (MEC)

Overview In this chapter, you will connect existing vertical elements using the Bentley Rail Track geometry commands.


Loading Your Files 1. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 2. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 3. Click File > Open. 4. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 5. Select railm_tut.xin, and click Open. 6. Select existing.dtm, and click Open. 7. Select singletrack.alg, and click Open. 8. Click Cancel to dismiss the dialog box.

Using Multiple Vertical Element Connection Bentley Rail Track provides several metho methods ds for creating a vertical alignment. One approach lets you add points of intersection (PIs) and curve sets. Another method defines the geometry by vertical element design. Finally, you can create a vertical alignment using multiple element connection and a

Building a Vertical Alignment Using MEC 139


regression analysis. In this task, you will build on an existing vertical alignment using multiple element connection. In the tutorial topic Completing a Vertical Alignment using Multiple Element Regression Analysis Analysis,, you can complete the alignment with h vertical multiple element regression analysis. Begin by viewing the current active vertical alignment. 1. Click Geometry > View Geometry > Active Vertical.

Next, fit a parabola between the linear elements. 2. Click Geometry > Vertical Regression > Multiple Element Regression Analysis.

3. Under Beginning Element, click Select. 4. Click on the first element in the alignment.

5. Under Ending Element, click Select. 6. Click on the second element.

140 Building a Vertical Alignment Using MEC

Building a Vertical Alignment Using MEC

Notice that the length is displayed in the dialog box.

7. Click Add After After. 8. For Type, select Parabola. 9. For Length, type 800. Press Tab. This is an initial “best guess” for these values. 10. For the K value, type 200. Press Tab.

11. Click Apply; then, click Close. The defined parabola parameters are displayed in the dialog box.



Notic Notice e that the element has not yet been placed. On this dialog box, you must indicate that you only seek a connection between elements, not a regression solution. Make this distinction on the Advanced tab. 12. Click Advanced. 13. Ensure the Regression Analysis opti option on is turned OFF.

14. Click the Main tab. 15. To provide a “best fit” for the new element, you must first “free” elements and parameters to make the fit. For more information on parameters and regression analysis, see the InRoads Suite Help Help. 16. Click Free for all three elements.


Building a Vertical Alignment Using MEC

17. Click Apply. The computed parabola connects the two elements.

The final computed parameters for the parabola are returned to the dialog box.

Notice that the estimated length of 800 is actually 799.178. 18. Click Save; then, Close.



19. Click F File ile > Save > Geometry Project.Click File > Exit and exit your CAD software, or continue to Chapter 13, Completing a Vertical Alignment using Multiple Element Regression Analysis.


12

Completing a Vertical Alignment using Multiple Element Regression Analysis (MERV)

Overview In this topic, you will complete a vertical alignment that contains two previously connected elements. The alignment serves as a railroad bed. You will accomplish this task using the multiple element regression analysis command. Regression analysis allows for a best fit geometric solution through surveyed points.



Completing a Vertical tical Alignment Using MERV 145


Using Multiple Vertical Element Regression Analysis Begin this task by reviewing the existing elements in the active vertical alignment. 1. Click Geometry > View Geometry> Active Vertical.

Notice there are 2 linear elements and 1 parabola in the project. Next, you will place the final linear element in the vertical a alignment. 2. Click Geometry > Vertical Regression > Edit/Review Regression Points. 3. Click the Select button. 4. In the graphic view, select points 128 to 163. Note Remember, you can also multi-select select the points in the dialog box. If you select points using this method, you must also click the Edit button; and select Yes to include all the points in the analysis, and verify that all other points are set to No:

5. Accept the points.

The points are highlighted in the dialog box.

146 Creating a Vertical Alignment Using MERV

Creating A Vertical Alignment Using MERV

6. Click Geometry > Vertical Regressi Regression on > Single Element Regression Analysis. 7. For Element Type, select Line. 8. For Save Order, select Last Element. 9. Click Compute; then, save.

The element is placed in the alignment. 10. Click Close. Next, you will complete the alignment by connecting the last two elements with a parabola, using regression analysis.

11. In the Edit/Review Vertical Regression Points dialog box, click Select. 12. In the graphic view, select points 101 to 129. 13. Accept the points.

Creating a Vertical Alignment Using MERV

147


14. Click Geometry > Vertical Regression > Multiple Element Regression Analysis.

15. Under Beginning Element, click Select. 16. Click on the preceding circular element.

17. Under Ending Element, click Select. 18. Click on the last element.



19. Click Add After. 20. For Type, select Parabola. 21. For Length, type 450.00. Press TAB. 22. For the K value, type -210.00. Press TAB.

23. Click Apply; then, click Close.

Creating a Vertical Alignment Using MERV

149


Notice that the final parabola parameters are displayed. Next, you will specify that this connection will be done using regression analysis. Set this option on the Advanced tab. 24. Click lick Advanced. 25. Click to turn on the Use Regression Analysis option.

26. Click the Main tab. 27. Click Free for all elements. Regression analysis requires a minimum of 3 free elements or parameters. 28. Click Apply. The parabola is regressed through the selected points and the connection is made. Notice the actual length was computed.



29. Click Save.

30. Click Report. Review the regression results. You can save results to a file or print it. 31. Close all dialog boxes. 32. Fit the profile in the view.

33. Click File > Save > Ge Geometry Project.

Reviewing the Vertical Alignment Now is a good time to review the content of the alignment. You can review the entire alignment or check the tangents element by element. 1. Click Geometry > Review Vertical.

2. In the Mode section, click Element. This option displays individual elements within the alignment. 3. Click the Next button to move along the alignment. Notice that as you move along the alignment, the element is highlighted in the graphics file. 4. Take a few minutes to review the alignment. You can use the Last, Previous and First buttons to navigate elements in the file. Creating a Vertical Alignment Using MERV

151


5. 6. 7. 8.

In the Mode section, click Alignment. Click Print (optional). Click Close to dismiss the dialog box. Using your CAD software, save the rail_tutorial.dgn or rail_tutorial.dwg file. 9. Click File > Exit and exit your CAD software or continue to Chapter 14, Creating a Cant Alignment.


13

Creating a Cant Alignment

Overview While several other tutorial topics discussed creating vertical and horizontal alignments with multiple element connection and regression ana analysis, lysis, this chapter details how to create a cant alignment from an existing horizontal alignment. In rail design, the cant (angular tilt of the track) alignment is necessary to counteract the centrifugal forces imposed in a horizontal curve. Cant is analo analogous gous to superelevation (common in roadway design) and the terms are frequently used interchangeably. While a single (parent) horizontal alignment is required, it may actually have several cant alignments associated with it. These various cant alignments allow you to create several different design alternatives for a rail project. Typically, a geometry project is established, including creating or loading a horizontal alignment. Cant alignments can then be created based on the existing horizontal elemen elements. ts. In Bentley Rail Track, a cant alignment is created in two ways: 1) values are computed by an equation using various design parameters that you provide or 2) cant values for each station are selected from an ASCII file lookup table, which contains radius us and cant values. Once cant values are available, the Cant Alignment Editor command allows you to add to or modify these values. In this task, you will create a cant alignment for a single track. Once you have created and modified an alignment, you can ca model the rail design using the Roadway Designer command (detailed in the chapter, Running Roadway Designer in Railway Design Design).

Before Getting Started

Creating a Cant Alignment 153


Locate the tutorial data in C:\Program Files\ \Bentley\Tutorials\Rail. Extract RailChaper14.exe. RailChaper14.exe


Creating a Cant Alignment Slot To begin begin,, create a slot in memory to store the cant alignment. Alignment information resides in memory until the geometry project (*.alg) is saved again. 1. Click File > New. 2. Click the Geometry tab. 3. For Type, select Cant. 4. For the Name, type cant. Press the TAB key. 5. Click Apply; then Close.

Creating a cant alignment first involves setting global parameters that will affect all of the initial cant station values. For this task, the parameters have already been selected. Next, you will take a look at these default defau global settings prior to creating the cant alignment.

Reviewing Global Cant Settings

154 Creating a Cant Alignment


In Bentley Rail Track, default cant settings are located on the Rail tab in the Options dialog box. Later, when you define the cant stations and compute cant values, the settings located here will apply; however, they can be modified at any time using the Cant Editor command. You will modify cant values later in the workflow 1. Click Tools > Options. 2. Click the Rail tab. 3. For Design Speed, type 100. Press the TAB key.

4. Click Apply. 5. Review the remaining settings: • Design speed specifies speed for the alignment. • Equilibrium Constant specifies the constant value used to compute equilibrium cant. Equilibrium cant is the theoretical amount of cross-sectional inclination necessary to negate the centrifugal forces imposed by a horizontal curve. • Applied Constant specifies the constant value used to compute applied cant. Applied cant is the actual cant applied to a portion of track. • Cant Rounding Constant is the value, in millimeters or inches, used to mathematically round a computed applied cant to the specified interval.



• Centerline Rail to Centerline Rail and Inside Rail to Inside Rail Distance are two different methods for specifying gauge. • Virtual Transition Length is the length to which cant is applied when a transition spiral is not required. • Percent Linear iss the amount of cant transition applied on a linear element of an alignment that does not contain spirals. • Rotate Cant About specifies the point around which the cant is rotated. These options allow rotating about the: Inside Rail, Center, Outside Rail, Left eft Rail, or Right Rail. • Add Cant at Spiral to Spiral Station provides instruction for a reverse spiral situation. When checked, this option instructs the software to include a cant point at the spiral-to-spiral transition. • Compute Turnouts based on Mainline line Cant instructs the software to create turnouts by adjusting the ratio at .0 so that the resultant angle is measured in a plane defined by the cant of the mainline alignment. 6. Click Close to dismiss the dialog box.

Defining the Cant Alignment A cant alignment consists of a list of cant values. These values are computed based on the given horizontal alignment, design speed, equilibrium constant, applied constant, and the track gauge. These values are stored in a list that is ordered by station, and each station contains defining information about the cant at that location. Cant stations may correspond to the cardinal points in the (parent) horizontal alignment. Cant values are computed using the C Cant ant Alignment Editor. You can also use this command to modify, delete, or report on an entire cant or only a portion of the alignment.

Using the Cant Editor Previously, you opened a horizonta horizontall alignment and created a slot in memory for the new cant alignment. Next, compute a cant alignment. 1. Click Geometry > Superelevation > Cant Editor.



2. Click Define All.

These values have been previously defined on the Tools > Option > Rail tab. 3. Click OK.

The Define All option allows you to compute cant values for all elements of the alignment at one time. 4. Click Apply. The alignment is computed based on the Rail settings and/or the values in the Define Cant Alignment dialog box. These values are list listed ed in order of station. The sequence begins with a Point of Beginning (POB) element, leading with a Tangent into a Spiral followed by a series of Spirals



and Curves. The element terminates at the Point of Ending (POE). Next, you will add a station entry and slow the design speed. 5. Click on the last SC in the list. 6. Click Add. 7. For Station, type 2+300.00. 8. For Design Speed, type 80.00. 9. Click Apply; then, Cancel.

Next, edit the design speed for the last three cant elements. You could select each element in individually dividually and modify the value (as you did in step 5), or you can modify several elements at one time. 10. Multi Multi-select the last three cant elements.



11. Click Edit. 12. For Design Speed, type 80.00.. Press the TAB key.

13. Click OK.

14. Click Apply to store the additions and changes. 15. Click Report.



16. Click Save As to save the alignment report; then, click Print (optional). 17. Close the Results dialog box. 18. Cancel the Cant Alignment Editor dialog box. You have successfully created a cant alignment, modified cant elem elements, ents, and generated an alignment report. Although you don’t see any changes to the design file here, you can view these changes when you run the Modeler command 19. Click File > Save > Geometry Project. 20. Using your CAD software, save the rail_tutorial.dgn or rail_tutorial.dwg file. 21. Click File > Exit and exit your CAD software or continue to Chapter 15, Creating Turnouts.


14

Creating Turnouts

Overview Several Bentley Rail Track tutorial discussions demonstrate creating vertical, horizontal and cant alignments. In this chapter, however, you will create turnouts. Generally, a turnout is a term for a single track that splits to become two tracks and is equipped with moving rails to change the route. These connections allow a smooth transition from the main track to the diverging track. Turnouts may contain branches with each branch containing elements. These elements may be linear, circular, or clothoid elements. In this task, you create a simple turnout for a single track.


Loading Your Files 25. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 26. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 27. Click File > Open. 28. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 29. Select railm_tut.xin, and click Open. 30. Select singletrack.alg, and click Open. 31. Click Cancel to dismiss the dialog box.

Creating a Parallel Track To begin, you must create a track parallel to the existing mainline alignment. Creating Turnouts 161


1. Click Geometry > Utilities > Parallel Horizontal Alignment 2. For mode, select Specify 3. In the From box, set the Horizontal Alignment to “centerline” and key in the offset of -5. This is a 5 meter offset to the left. 4. In the To box, enter the alignment name offset. offset

5. Click the Apply button. The offset alignment is created, and the “Successful completion” prompt displays in the status bar.

162 Creating Turnouts

Creating Turnouts

6. Click Close to exit the command.

Defining a Turnout Style In Bentley Rail Track, you can define the display styles for turnout geometry. When you define the style turnouts, it will be associated with all turnout elements in the design when the Display Turnouts command is activated. A default turnout style is delivered with Bentley Rail Track in the civil.xin file. In this task, you will simply become familiar with the workflow for creating a new geometry style. 1. Click Tools > Style Manager.

2. Click on the New button 3. For Name, key in turnouts. Press TAB. 4. In the Include Definition For, turn ON the Geometry Point, Line, Arc, and Spiral check boxes. 5. In the tree view, select Geometry Features > Lines > Symbology. 6. Under Symbology, select Edit. 7. In the Edit Named Symbology dialog, double-click to edit Plan Line. 8. Set the color to yellow and click OK; then, Apply and Close the Edit Named Symbology dialog. 9. Select Apply and Close on the New Style dialog, and the new style will be created. 10. Close the Style Manager.

Reviewing the Turnout Library The turnout library defines the basic definitions for the actual turnouts. This information includes textual data, the type of turnout being created, dimensional and branch data. A turnout library has been previously prepared for this topic. Here, you will review the current parameters of this library.

Creating Turnouts 163


1. Click Geometry > Turnouts > Turnout Library.

2. For Name, select e493009. 3. Review but do not change any of the settings. For a detailed discussion of these parameters, see the InRoads Suite Help topics. 4. Click Close. 5. Before proceeding to the next task, make Centerline the active alignment (from the Explorer, right click on Centerline and select Set Active).

Placing Turnouts Now tha thatt you have created the initial parallel track and reviewed the turnout library, place the turnouts. 1. Click Geometry > Turnouts > Create Turnout. 2. For Name, select 1 3. For Style, select e493009. 4. Make sure Place By is set to .1. 5. Turn OFF the toggles at the botto bottom m of the dialog.


Creating Turnouts

6. Click Apply. 7. At the prompt: Identify mainline alignment, datapoint on the Centerline.

8. Next, at the prompt: Identify point, you must identify the placement point. In the CAD window, key in so=600. so=600 Press Enter. This specifies station 0 0+600 +600 and places the turnout near the beginning of the first curve. 9. At the prompt: Identity orientation point, datapoint to the left of the centerline alignment, between the centerline and offset alignments (and ahead of the station 0+600 .1 point).

10. Accept the solution. The dialog box is uncollapsed. The first turnout is placed. You may need to zoom into the view to see the turnout.



11. Place the second turnout. Click Apply again. 12. At the prompt: Identify mainline alignment, datapoint on the parallel a alignment.

13. At the prompt: Identify point, in the CAD window, key in so=675 so=675. Press Enter. This specifies station 0+675 for the .1 placement point. 14. At the prompt: Identity orientation point, datapoint to the bottom of the alignments, causing the turnout to be placed between the centerline and offset alignment.. 15. Accept the solution. The dialog box is uncollapsed. The second turnout is placed. Notice in the Name field, the number increments to 3.


Creating Turnouts

16. Click Close to dismiss the dialog box. 17. Click File > Save > Geometry Project.

Making a Connection Between Turnouts Once turnouts are in place, they are easily connected. 1. Click Geometry > Turnouts > Connection Editor.

2. Under Beginning Element, for Turnout Name, select 1. This identifies the first turnout you placed as the beginning point for the connection. 3. Make sure Ending Connection is set to Turnout. 4. Under Ending Element, for Turnout Name, select 2. 5. Click the Add After button.



6. For Type, make sure Circular is selected. 7. For Length, key in 8.5. Press the TAB key. 8. Click Free. 9. For Radius, key in –200. Press the TAB key. 10. Click Free. 11. Click Apply; then, Close. 12. Under Ending Element, click the checkbox next to Station. This “frees” the station location of the ending turnout tu to make the connection.

13. Click Apply. The turnouts are connected.


Creating Turnouts

The turnout horizontal alignment has been created, and has been given the name “1”. 14. Click Save. Do not close the dialog box.

Reviewing Connected Geometry It is a good practice to review the horizontal alignment after turnouts have been connected. 1. Click the Report button.

2. You can click Print to print the results to hardcopy or save the results to a file. 3. Close ose the Results dialog box. 4. Close the Connection Editor dialog box. 5. Click File > Save > Geometry Project.

Creating Vertical Geometry for Turnouts After turnouts have been created and connected, you yo can create the vertical geometry for the turnouts. 1. Click Geometry > Turnouts > Create Verticals.



2. For Compute From, select First Mainline. The geometry for the turnouts will be computed from this alignment. 3. Click Copy and Translate Mainline Element to turn it on. This will ensure the vertical elements from Centerline will be copied to alignment 1. 4. For Vertical Alignment, type vertical geo1.. Press the TAB key. 5. For Description, type vertical geometry for turn turnouts. Press the TAB key.

6. Click Apply; then, click Close. The new geometry is created. 7. Fit the view. From the Explorer, click on the Geometry tab. Under singletrack,, click on alignment # 1 to see the new vertical geometry name in the list.

8. Next, bef before ore displaying a profile of the new vertical geometry, you must first create cant for alignment ‘offset’. Begin by creating a slot in geometry for the cant alignment.


Creating Turnouts

9. In the Explorer, click on alignment ‘offset’. Right mouse click and select Set Active. 10. Click File > New. Click the Geometry tab. For Type, select Cant. For Name, type cant1. Press the TAB key. Click Apply; then Close. 11. Click Tools > Options. Click the Rail tab. For Design Speed, type 100. Press the TAB key; then, click Apply then Close. 12. Next, define cant values for the alignment. 13. Click Geometry > Superelevation > Cant Editor. 14. For Horizontal Alignment, select ‘offset’. 15. For Cant Alignment, click cant1. 16. Click Define All. 17. Click OK on the Define Cant Alignment dialog box.

18. Click Apply; then, Close. Cant values are now defined for alignment ‘offset’. 19. Now, display a profile of the new vertical geometry (alignment 1). Click Evaluation > Profile > Create Profile. 20. On the Source leaf, for the Alignment, select 1. 21. For Create, select Window Only. 22. Click Preferences. Select vertical geometry, click Load; then, Close. 23. Click Apply. 24. Select a location to display the profile The profile window is displayed. NOTE: If the profile is un-readable, it may be necessary to extract the railm_tut.xin from railchapter15.exe and go through steps 19 through 23 again.



25. Next, display the active vertical geometry. Click Geometry > View Geometry> Active Vertical.

26. To complete this topic, add alignments ‘offset’ and ‘centerline’ to the profile display. Click Evaluation > Profile > Alignments to Profile. 27. For Profile Set, select 1. 28. Click in the Alignments to Project field. 29. Click the Filter button. 30. Select (highlight) alignments ‘offset’ and ‘centerline’and click Add.


Creating Turnouts

31. Click OK.

32. Click Apply.

33. Click Close. 34. Click Files > Save > Geometry Project. 35. Click File > Exit and exit your CAD software, or continue to Chapter 16, Using Templates in Railway Design.


15

Using Templates in Railway Design

Overview When alignments have been created, you can begin to build a model of the entire railway surface. In Bentley Rail Track, templates are used to define the cross cross-sectional sectional geometry of the railway. A template consists of points and components that, taken together, represent a cross section of the rail surface. Thee surface of the track is defined by placing templates at intervals along the alignment using the elevations defined in a vertical alignment. Each point in the template is connected between the template drops to create longitudinal surface features defini defining the proposed railway. A template can be comprised of four types of objects: Closed Components, Open Components, End Condition Components, and Null Points. Creating a design using a template is very basic in that it simply applies a consistent cross cross-sec section along an alignment. For a complete discussion of the other definitions and modeling features, see the online help topic for these respective commands. Or, you can review the InRoads Roadway Designer Tutorial XM PDF for a detailed workflow on defining templates. Additional information is also available from the Create Template online help topic. In this chapter, you will work with a template library containing different components to build a template for a single track. These files have been pro provided vided for you. The template will contain a closed component representing a Ballast layer, and open components and end conditions that represent the sub-grade grade surface. At the end of the task, you will save the template library to disk. Template libraries allow you to save templates so that they can be accessed by different users or on different rail design projects.

Using Templates in Railway Design 177



Loading Your Files 32. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentley Rail Track”. 33. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 34. Click File > Open. 35. Set the directo directory to C:\Program Files Files\Bentley\Tutorials\Rail. 36. Select railm_tut.xin, and click Open. 37. Select singletrack.alg, and click Open. 38. Select existing.dtm, and click Open. 39. Select rail_tutorial.itl, and click Open. 40. Click Cancel to dismiss the dialog box.

Creating a T Template Before you define the template, review the template that has been provided for this topic. 1. Click Modeler > Create Template. 2. In the Template Library list, double double-click click on the top folder to eexpand the template library.

3. Right Right-click click on the top folder and select New > Folder. For the folder name, enter Single Track Template. Template 4. Right Right-click click on the Single Track Template folder and select New > Template. For the template name, enter Single Track Track.

178 Using Templates in Railway Design


The Single Track template will be created by dragging-anddropping components from other templates into the Single Track template. These components have already been created. 5. With Single Track remaining the active template, click on the Ballast folder, then click on the ‘single track ballast’ template. Note: When browsing to the ‘single track ballast’ template, it is important to only use single-clicks when identifying the template so that the active template does not change. When the ‘single track ballast’ template is highlighted, it will show in the preview window in the bottom left hand corner of the Create Template dialog.

6. Go to Tools>Dynamic Settings, and set the X and Y step to 1.0.

7. From the Preview window, click on the top center track point of the single track ballast template (point will be highlighted by a cyan box) and drag the components to the



0,0 point of the Single Track template, then drop the components in the new template. 8. Fit the view.

9. Now browse to the End Conditions fol folder, der, and single-click single on the 2:1Fill template. 10. Click on the top point in the fill component in the Preview window and drag the component into the template window. 11. While still dragging the component, right right-click click in the template window and select “Mirror”.

Notice that now a left and right fill slope are able to placed in the template window. 12. Now hover the cursor over the “subgradeR” until the point turns white and bold, then drop the fill slope slope component on that point.

180 Using Templates in Railway Design


13. Follow the same steps to place the ‘2:1Cutw/ditch’ end condition onto the same point.

14. Select File>Save to save the new template to the ITL file. 15. Close the Create Template dialog.

Creating a Railway Corridor Now that the template has been created, it can be applied to the design horizontal and vertical alignment. Click Edit. 1. Go to Modeler > Roadway Designer. 2. Select Corridor > Corridor Management. 3. For the Name, enter rail_cant. 4. For Horizontal and Vertical alignment, select ‘centerline’ and ‘existing grade’ respectively. 5. Click the Add button and the corridor is created.

6. Close the Manage Corridors dialog. 7. Select File > Save As 8. For file name, enter rail_tut, and click Save to save the IRD file to the disk.

Dropping Templates



Once the corridor has been created, you can apply the templates to the horizontal and vertical alignments. When a template drop is specified in the corridor, the template is copied out of the ITL file and placed inside the IRD file. 1. Click Corridor > Template Drops. 2. For Interval, type 10.0. 3. In the list of Library Templates, expand the folders by double double-clicking clicking and browse to the “Single Track” template in the Single Track Template folder. 4. Highlight the “Single Track” template, then select the Add button.

5. Close the Template Drops dialog. Now the template and existing surface display in the cross section view on the right side of the Roadway Designer dialog.

6. Use the station forward and back buttons to move along the alignment and review the so solution lution of the template at each drop. Note: If you can not see the entire template drop, right click in the cross section view and select Display Properties, then select Fit Solution. 182 Using Templates in Railway Design


7. In the Roadway Designer Dialog, select Tools > Options. 8. In the Display group box, turn ON Null Points. 9. Select OK, 10. Step to the next station and observe that the rails and centerline are now displayed.

11. Select File > Save in the Roadway Designer to save the IRD. 12. Click File > Exit and exit your CAD software, or continue to Chapter 17, Generating Design Surfaces Using Roadway Designer.


16

Generating Design ign Surfaces Using Roadway Designer

Overview In this final chapter, you will generate a railway model using the information previously defined for this tutorial. All of the information required to create a railway model has been included. This data includes: the cant alignment; superelevation range and pivot points for the ballast; rail layers for a single track; the typical section; and the roadway definition. All of this data is brought together to form the model using the Roadway Modeler command. As the command processes, Bentley Rail Track generates a new DTM for each layer defined in the templates specified in the first roadway entry. You can treat these new DTMs as any other surface; that is, you can generate contours, cut crosscross sections, compute volumes, and save the inf information ormation to a Bentley Rail Track DTM file.


Loading Your Files 41. Go to Start>Programs>Bentley>InRoads Group XM and load the product “Bentle “Bentley Rail Track”. 42. From C:\Program Files\Bentley\Tutorials\Rail Rail open the rail_tutorial.dgn or rail_tutorial.dwg file. 43. Click File > Open. 44. Set the directory to C:\Program Files Files\Bentley\Tutorials\Rail. 45. Select railm_tut.xin, and click Open.

Running Roadway Modeler in Railway Design 185


46. Select singletrack.alg, and click Open. 47. Select existing.dtm, and click Open. 48. Select rail_tutorial.itl, and click Open. 49. Select rail_tut.ird, and click Open. 50. Click Cancel to dismiss the dialog box.

Applying Cant The Cant values for the alignment were calculated in Chapter 14. Point Controls will be used to apply the cant alignments to the template in the Roadway Designer. 1. In the Bentley Rail Track main window, go to Tools > Options and click on the Rail Tab. 2. For the Rotate Cant About field, set to Inside Rail

3. Click Apply and Close 4. Go to Modeler > Roadway Designer. As you step through the stations in the horizontal curves, notice that currently there is no cant applied to the template. Note: If you do not see the N Null ull points representing the rails and centerline, go to Tools>Options and turn on Null Points in the Display box. 5. Go to Corridor > Point Controls. 6. For Point, select “rail1CL” 7. For Mode, select “Vertical” 8. For Control Type, select “Cant” 9. Set the Horizontal A Alignment lignment to ‘centerline’ and the Cant to ‘cant’. 10. Select the following points: Cant Center Point = ‘rail1CL’ Cant Left Point = ‘left rail’ Cant Right Point = ‘right rail’ 11. Click the Add button, and the cant point control is added to the list. 12. Close the Poin Point Controls dialog.

186 Generating Surfaces in Roadway Designer

Generating Surfaces in Roadway Designer

13. Step through the stations and view the template in a horizontal curve to verify that the cant is being applied.

14. Select File > Save to save the roadway designer file.

Generating the Design Surface 1. Go to Corridor > Create Surface. 2. For Name, enter Design. 3. Turn ON Include Null Points, Add Exterior Boundary, and Triangulate.

4. Select Apply. The surface gets created. 5. When the command is finished processing, click Close to dismiss the Roadway Designer. Now that you have a surface that represents your railway model, you can examine the results using various surface display commands, such as View Contours, View Cross Sections, View Triangles, and so on.



6. You may want to use the Zoom tools to get a closer look at the features in the railwa railway model.

7. Save all files.

Displaying Geometry Annotation in Plan View Once you have modeled the new railway, you can define and display plan annotation for the horizontal alignments. 1. Click G Geometry eometry > View Geometry > Switch Height Plan. Note If the command is not available from the menu, click Tools > Application Add Add-ins. ins. Select Switch Height Plan and click OK. 2. For Reference, select centerline. 3. For Horizontal Alignment, click in the field and enter an asterisk (*). Press the TAB key. This will list all of the available alignments in the Selected field. 4. Click the Preferences button. From the list, select Turnouts. This preference file contains settings previously selected for this lesson. Cli Click Load; then, Close.

188 Generating Surfaces in Roadway Designer

Generating Surfaces in Roadway Designer

5. Click Apply. Annotation for plan view is displayed.

6. Fit the view. 7. Close all dialog boxes. 8. Exit the product.


V8.9Bentley Rail Track Tutorial

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