Design of Cable Stayed Bridge Using SAP2000 (Powerpoint Presentation)

‫بسم اهلل الرحمن الرحيم‬ STRUCTURE PROJECT 2009  CABLE STAYED BRIDGE

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2 SPANS 160 M FOR EACH

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22 M WIDTH

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PREPARED BY MOHAMED ELGOHARY MOHAMED 

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PYLON SHAPE A OR DELTA 

CABLES

THE DECK

BEARINGS

MATERIAL ROPERTIES FOR THE DECK AND PYLONS

COCRETE STRENGTH C28 =

500Kg/cm2

MODULUS OF Elasticity =335 t /cm2 Poison ratio

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

=0.2

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Thermal coefficient =0.00001

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Properties of stay cables Nominal diameter

=15.7 mm

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Nominal tensile strength(U.T.S) = 17.7 t/cm2

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Nominal weight =1.18 kg/m

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Modulus of elasticity = 1950 t/cm2

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Allowable stress in (U.L.S) = 0.6 U.T.S

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MODELLING AND ANALYSIS  

BY SAP 2000

DEFINE LANES  VEHICLES  VEHICLES CLASSESS  BRIDGE RESPONSES 

DEFINE

WIND LOAD 

2 CASES FOR WIND LOAD  1- CASE  DEAD LOAD + LIVE LOAD  1 KN /M2 

2-CASE DEAD LOAD

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

2 KN /M2 

LOAD COMBINATION FOR WIND LOAD 

0.9(1.35D.L+ 1.35 VEHICLE+0.9 W.L)

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DEFINE EARTHQUAKE LOAD CASE 

LOAD COMBINATION FOR EQ 

( D.L + 0.2 VEHICLE+1.0 EQ) 

LOAD CASE OF

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TORSION 2 LANES -1 WAY OCCUPY

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OTHER 2 LANES ARE EMPTY

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LOAD CASE OF 

TORSION 2 OUTER LANES OCCUPY

OTHER LANES EMPTY 

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FINAL  RESULTS

THE DECK MAX AXIAL FORCE = -107784.905 KN

MOMENT MAX +ve MOMENT=140513.3679 KN.M

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MAX – ve MOMENT = -130005.346 KN.M

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TORSION MAX TORSION =10965.1112 KN.M 

SHEAR MAX SHEAR = 12041.742 

PYLON AXIAL FORCE = -194879.9 KN  MAX M3 = -50303.4 KN.M 

MAX M2 = 30673.5308 KN.M 

CONNECT BEAM AXIAL FORCE = -8661.938 KN  MAX M3 = 32051.158 KN.M 

MAX M2 = 4008.7672 KN .M 

THE DECK  SECTION

PYLON SECTION AT  TOP

PYLON SECTION AT  BOTTOM

CONNECT BEAM  SECTION

FINAL  PRETENSION

FINAL  DEFLECTION

FINAL AREA  STEEL FOR CABLES

‫( سبحان ربك رب العزة عما يصفون‬ ‫* و سالم على المرسلين‬ ‫*و الحمد هلل رب العالمين )‬