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Determination of passive earth pressure coefficients using limit equilibrium approach coupled with the Kotter equation

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Title Determination of passive earth pressure coefficients using limit equilibrium approach coupled with the Kotter equation
 
Creator PATKI, MA
MANDAL, JN
DEWAIKAR, DM
 
Subject SOILS
COMPUTATION
SLICES
SANDS
inclined retaining wall
cohesionless backfill
Kotter equation
limit equilibrium
passive earth pressure coefficients
passive thrust location
 
Description A numerical method is developed to evaluate the passive earth pressure coefficients for an inclined rigid retaining wall resting against a horizontal cohesionless backfill. A composite failure surface comprises a log spiral, and its tangent is assumed in the present study. The unique failure surface is identified based on the limit equilibrium approach coupled with the Kotter equation (published in 1903). Force equilibrium conditions are used to evaluate the magnitude of the passive thrust, whereas the moment equilibrium condition is employed to determine the location of the passive thrust. The distinctive feature of the present study is that no assumption is required to be made regarding the point of application of the passive thrust, which would otherwise be an essential criterion with respect to the several limit equilibrium based investigations available in the literature. The passive earth pressure coefficients, K-p gamma, are evaluated for various values of soil frictional angle phi, wall frictional angle delta, and wall inclination angle lambda, and compared with the existing results.
 
Publisher CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
 
Date 2016-01-15T09:50:10Z
2016-01-15T09:50:10Z
2015
 
Type Article
 
Identifier CANADIAN GEOTECHNICAL JOURNAL, 52(9)1241-1254
0008-3674
1208-6010
http://dx.doi.org/10.1139/cgj-2014-0351
http://dspace.library.iitb.ac.in/jspui/handle/100/18295
 
Language en