Abstract

Active and passive earth pressure coefficients by a kinematical approach

Highlights

  • The problem of active and passive earth pressures acting against rigid retaining structures has been extensively studied in the literature since Coulomb.[1]

  • This variational limit equilibrium method may be extended to the active earth pressure problem, and the same conclusions remain valid in this case: (a) A log-spiral failure surface may be obtained from a variational maximisation procedure

  • The aim of this paper is to show that the upper-bound method in limit analysis for a rotational log-spiral failure mechanism gives rapid and good predictions for both active and passive earth pressures

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Summary

Introduction

The problem of active and passive earth pressures acting against rigid retaining structures has been extensively studied in the literature since Coulomb.[1]. A variational analysis has been applied to the passive earth pressure problem by Soubra et al.[2] Their approach is based on a limit equilibrium method, and the solution provides a log-spiral failure surface. It should be emphasised that their method, employed in this paper, can be categorised as an upper-bound in the framework of limit analysis where a rotational rigid body movement is considered. This variational limit equilibrium method may be extended to the active earth pressure problem, and the same conclusions remain valid in this case:

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