Este documento describe cómo calcular el factor de seguridad contra deslizamiento (FS) de una presa de tierra de 43 metros de altura con pendientes de 4:1. Se proporcionan los parámetros del material de la presa y su fundación. Usando la solución de Bishop y Morgenstern y tablas de coeficientes de estabilidad, se calcula el FS para diferentes condiciones, obteniendo valores mínimos de 1.550 para c/γH=0.025 y 1.812 para c/γH=0.050. Por interpolación, el FS para c/
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Whenever an auto manufacturer refreshes an existing car or
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Whenever an auto manufacturer refreshes an existing car or
truck model or builds a new one, the model will undergo
hundreds if not thousands of tests before the factory line and
tooling is finished and vehicle production begins. These
tests are generally carried out on expensive, custom-made
prototype vehicles because the new factory lines for the
model do not exist yet. The work presented in this paper
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result of this work is a scheduling tool that optimizes the
overall given test schedule in order to complete the work in
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vehicles required for the test schedule. The tool was
validated on the largest testing schedule for an updated
vehicle to date. This model exceeded the capabilities of the
existing manual scheduling process but was successfully
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Factor de seguridad contra deslizamiento de una Represa de Tierra
1. 1 ING: JOHNNY JARA RAMOS DISEÑO DE PRESAS
COMO HALLAR EL FACTOR DE SEGURIDAD CONTRA DESLIZAMIENTO DE
UNA REPRESA DE TIERRA
La construcción de una represa de tierra se realizará con un material homogéneo, cuyo peso unitario
es 18,6 kN/m3
. Los parámetros de resistencia efectivos de este material son c′ = 28 kPa y ′ = 30º.
La razón de presión de poros, ru = 0,5.
Durante la investigación de campo se verificó que el material de la fundación estaba compuesto por
suelos aluviales con propiedades similares a las del material de la presa.
La represa es de 43 m de altura y sus pendientes son 4:1 (H:V).
Hallar:
El factor de seguridad contra el deslizamiento. Considere condiciones a largo plazo.
SOLUCIÓN
43m
4
1
Características de la presa de tierra.
En condiciones drenadas (largo plazo), se puede emplear la solución de Bishop y Morgenstern para
determinar la estabilidad del talud derecho en la presa de tierra.
Se tiene que:
0350
43618
28
,
,H
c
Empleando la Tabla L.1
Tabla L.1. Valores de m' y n'
a. Coeficientes de estabilidad m' y n' para c/H=0
Coeficientes de estabilidad para taludes de tierra
Talud 2:1 Talud 3:1 Talud 4:1 Talud 5:1
m' n' m' n' m' n' m' n'
10,0 0,353 0,441 0,529 0,588 0,705 0,749 0,882 0,917
c′ = 28 kPa
′ = 30º
= 18.6 kN/m3
ru = 0,50