Theoretical analysis of earth pressure against rigid retaining walls under translation mode

AuthorsThirapong Pipatpongsa,Jiro Takemura
JournalSoils and Foundations
Page number664-675
Serial number56
Volume number4
IF1.69
Paper TypeFull Paper
Published At2016
Journal TypeTypographic
Journal CountryJapan
Journal IndexISI،JCR،Scopus
KeywordsRetaining walls;Soil/structureinteraction;Archingeffect;Earthpressure;Stressanalysis;Failure

Abstract

The soilmassbehindaretainingwallgraduallyyieldsandseparatesfromthestationarysoilmasswiththecomplexshapeoftheslipsurface depending onthemodeofwallmovementandroughnessofthewallsurface.Inthisstudy,theproblemofarigidretainingwallwithauniform surcharge actingalongthehorizontalbackfill underactivetranslationmodeisinvestigatedinatwo-dimensionalsystemofequilibrium.Exact stress solutionsbasedonJanssen'sapproacharegeneralizedinrectangularcoordinatesandarevalidatedwithboundaryconditionsonthe retaining wallandattheCoulombsliplinebehindthewall.BecausetheyieldconditionisnotusedinJanssen'sapproach,theproposedsolutionis a merelystaticstresssolution,notstaticallyadmissiblesolution.Newequationsaredevelopedtoestimatethemagnitudeanddistributionof vertical, horizontalandshearstressesinthefailurezonebehindaretainingwall.Theproposedanalysisindicatesthearchingeffectbehindthe retaining wallbecausethemaximumstressesdonotappearedatthetoe;butatsomedistanceawayfromthetoeoftheretainingwall.Theresults of theproposedformulationsarecomparedwithbothfull-scaleandlaboratory-scaleexperimentaldataaswellastheexistingformulations.The proposed analysisprovidescomparableapproximationsforhorizontalactivestressdistribution,themagnitudeandtheapplicationheightofthe horizontal activeforceatthewall.

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