Especificaciones de muros de retención de mampostería naturalDescripción completa
Diseños de muros de gravedad y recomendacionesFull description
tDescripción completa
Descripción: moto honda cg 125
Descripción: CONCRETO ARMADO
CONTENIDO •
DISEÑO ESTRUCTURAL MURO DE CONTENCIÓN
•
EJEMPLO DE APLICACIÓN
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DISEÑO ESTRUCTURAL MURO CONTENCIÓN OBJ ETI ETIVO VO :
Determinar las dimensiones de cada parte del muro, además de las respectivas armaduras necesarias para resistir los esfuerzos. Et ap as d el D is eñ o •
Evaluación de cargas verticales y presiones laterales que actúan sobre el muro
•
Verificación Ve rificación de la estabilidad estabili dad global del muro la volcamiento volc amiento y deslizamiento
•
Verificación de tensiones de contacto entre el suelo y la base del muro
•
Dimensionamiento de los elementos del muro
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DISEÑO ESTRUCTURAL MURO CONTENCIÓN 1. Esf u erzo s d e d is eñ o:
Las solicitaciones típicas a considerar en el diseño de un muro, son las siguientes: q sobrecarga W3
W1 W2
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Para el análisis y diseño del muro, se recomienda comenzar un pre dimensionamiento, donde se pueden utilizar los siguientes criterios referenciales. c ≥ 25 cm
H
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DISEÑO ESTRUCTURAL MURO CONTENCIÓN 2. ANÁL ISI ISIS S 2.1. PRESIONES DE TIERRA :
Para el análisis tanto las cargas gravitacionales como el empuje lateral de tierras se consideran con sus valores de servicio, es decir no son mayoradas. La magnitud del empuje de tierras varía ampliamente ampl iamente entre el estado activo y el pasivo dependiendo de la deformabilidad del muro. En todos los casos se debe procurar que el material de relleno sea granular y de drenaje libre para evitar empujes hidrostáticos que pueden originar fuerzas adicionales no deseables.
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DISEÑO ESTRUCTURAL MURO CONTENCIÓN De forma genérica los empujes vienen dados por la siguiente expresión:
=
K
Donde: γ = Peso específico específico del suelo contenido por el muro
H = Altura del muro K = Coeficiente de empuje de tierra 2.1.1. 2.1. 1. CASO ESTÁTICO:
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DISEÑO ESTRUCTURAL MURO CONTENCIÓN K
ESTADO ACTIVO
ESTADO PASIVO
0.00 8.00
1
Terreno granular denso
6.00 5.00 4.00 3.00 2.00
2
Terreno granular suelto
1 x x
H
2
Kp
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DISEÑO ESTRUCTURAL MURO CONTENCIÓN Para suelos normales o granulares, el coeficiente Ko se puede determinar mediante la siguiente expresión: