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2010, 4(1): 773-792 |
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Static earth pressure on inclined retaining walls with cohesive – frictional backfill. Journal of Engineering Geology 2010; 4 (1) :773-792
URL: http://jeg.khu.ac.ir/article-1-345-en.html
URL: http://jeg.khu.ac.ir/article-1-345-en.html
Abstract: (7233 Views)
Distribution of static active earth pressure on an inclined retaining wall, with frictional or cohesive-frictional backfill, has been studied in the present research. Based on the limit equilibrium concept, and by implementing the horizontal slices method (HSM), two formulations have been proposed for determination of critical failure wedge. Results obtained from these formulas and results of the suggested equations by other researchers have been compared. Findings of current study show that horizontal slices method is capable of predicting the stress distribution and angle of failure wedge for inclined walls with high degree of accuracy. In addition, this method is applicable for various conditions of soil and wall and is able to consider the slope of backfill, friction between soil and wall, cohesion of soil and the effect of surcharge, simultaneously. Application of achieved formulation from horizontal slices method reveals that active earth pressure on inclined walls is nonlinear for both frictional and cohesive-frictional soils and the center of mass point of the resultant force would be located in an elevation less than one third of the height of wall.
Keywords: Retaining wall, inclined wall, active earth pressure, horizontal slices method (HSM), cohesive-frictional soil
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