Effect of Tension Crack Formation on Active Earth Pressure Encountered in Unsaturated Retaining Wall Backfills

2021 ◽  
Vol 147 (2) ◽  
pp. 06020028
Author(s):  
Masood Abdollahi ◽  
Farshid Vahedifard ◽  
Mahrooz Abed ◽  
Ben A. Leshchinsky
Keyword(s):  
Crack Formation ◽  
Retaining Wall ◽  
Earth Pressure ◽  
Active Earth Pressure ◽  
Tension Crack

Force Polygon and Seismic Active Earth Pressure on the Back of a Retaining Wall Supporting c-F Backfill

2011 ◽  
Vol 2 (1) ◽  
pp. 20-28
Author(s):  
Sima Ghosh ◽  
Richi Prasad Sharma
Keyword(s):  
Retaining Wall ◽  
Earth Pressure ◽  
Active Earth Pressure ◽  
Tension Crack ◽  
Pressure Coefficients ◽  
Seismic Active Earth Pressure ◽  
Surcharge Load ◽  
Seismic Forces ◽  
Over The Top ◽  
Inertia Forces

The study presents a rational graphical approach to discover the dynamic active earth pressure on the back of a battered face retaining wall having inclined c-F backfill with surcharge load over the top of backfill. Considering the seismic forces as time independent inertia forces acting at the c.g. of the wedge soil, the law of force polygon is applied in the evaluation of seismic active earth pressure. A depth of tension crack in case of c-F backfill is also considered. A detailed parametric study has been made for the variation of seismic active earth pressure coefficients with respect to c, ca, F, d, kh, kv.

scholarly journals Probabilistic analysis of the active earth pressure on retaining wall for c-f soil backfill under seismic loading conditions

DYNA ◽  
2017 ◽  
Vol 84 (202) ◽  
pp. 9-15
Author(s):  
André Luís Brasil Cavalcante ◽  
Juan Félix Rodríguez Rebolledo
Keyword(s):  
Probabilistic Analysis ◽  
Retaining Wall ◽  
Earth Pressure ◽  
Seismic Loading ◽  
Active Earth Pressure ◽  
Loading Conditions

En este artículo se describe una metodología basada en el método de estimación puntual de Rosenblueth para el análisis del empuje activo desarrollado en un muro de retención con relleno cohesivo-friccionante bajo condiciones de carga sísmica. El principio básico de esta metodología es usar dos estimaciones puntales, i.e., la desviación estándar y el valor medio, para examinar una variable en el análisis de seguridad. Es posible mostrar que aumentando el valor del coeficiente de aceleración sísmica horizontal, el factor de seguridad por volteo decrece y la probabilidad de falla aumenta, especialmente para coeficientes mayores que 0.2. Por otro lado, es observado que el valor medio del factor de seguridad crece cuando aumenta el coeficiente de aceleración sísmica vertical, sin embargo la probabilidad de falla se mantiene prácticamente igual para el valor del factor de seguridad considerado como crítico (1.15).

Coefficients of active earth pressure with seepage effect

2012 ◽  
Vol 49 (6) ◽  
pp. 651-658 ◽  
Author(s):  
Pérsio L.A. Barros ◽  
Petrucio J. Santos
Keyword(s):  
Pore Water Pressure ◽  
Water Pressure ◽  
Retaining Wall ◽  
Drainage System ◽  
Numerical Procedure ◽  
Ground Surface ◽  
Earth Pressure ◽  
Friction Angle ◽  
Active Earth Pressure ◽  
Plane Failure

A calculation method for the active earth pressure on the possibly inclined face of a retaining wall provided with a drainage system along the soil–structure interface is presented. The soil is cohesionless and fully saturated to the ground surface. This situation may arise during heavy rainstorms. To solve the problem, the water seepage through the soil is first analyzed using a numerical procedure based on the boundary element method. Then, the obtained pore-water pressure is used in a Coulomb-type formulation, which supposes a plane failure surface inside the backfill when the wall movement is enough to put the soil mass in the active state. The formulation provides coefficients of active pressure with seepage effect which can be used to evaluate the active earth thrust on walls of any height. A series of charts with values of the coefficients of active earth pressure with seepage calculated for selected values of the soil internal friction angle, the wall–soil friction angle, and the wall face inclination is presented.

Pseudo-Dynamic Active Earth Pressure on Battered Face Retaining Wall Supporting c-Φ Backfill Considering Curvilinear Rupture Surface

2014 ◽  
Vol 5 (1) ◽  
pp. 39-57
Author(s):  
Sima Ghosh ◽  
Arijit Saha
Keyword(s):  
Wave Velocity ◽  
Retaining Wall ◽  
Pressure Coefficient ◽  
Wedge Angle ◽  
Earth Pressure ◽  
Friction Angle ◽  
Active Earth Pressure ◽  
Horizontal Shear ◽  
Rupture Surface ◽  
Wide Range

In the present analysis, using the horizontal slice method and D'Alembert's principle, a methodology is suggested to calculate the pseudo-dynamic active earth pressure on battered face retaining wall supporting cohesive-frictional backfill. Results are presented in tabular form. The analysis provides a curvilinear rupture surface depending on the wall-backfill parameters. Effects of a wide range of variation of parameters like wall inclination angle (a), wall friction angle (d), soil friction angle (F), shear wave velocity (Vs), primary wave velocity (Vp), horizontal and vertical seismic accelerations (kh, kv) along with horizontal shear and vertical loads and non-linear wedge angle on the seismic active earth pressure coefficient have been studied.

Active Earth Pressure against Cantilever Retaining Wall Adjacent to Existing Basement Exterior Wall

2020 ◽  
Vol 20 (11) ◽  
pp. 04020207
Author(s):  
Hu Weidong ◽  
Zhu Xinnian ◽  
Liu Xiaohong ◽  
Zeng Yongqing ◽  
Zhou Xiyu
Keyword(s):  
Retaining Wall ◽  
Earth Pressure ◽  
Active Earth Pressure ◽  
Exterior Wall
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