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基于ABAQUS的强度折减法边坡失稳判据研究.docx

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基于ABAQUS的强度折减法边坡失稳判据研究 Abstract Slopeinstabilityisacommonissueincivilengineering,whichcanresultinseriousconsequences,suchaspropertydamageandlossoflife.Thestrengthreductionmethod(SRM)hasbeenwidelyusedtostudythestabilityofslopesbasedonfiniteelementanalysis(FEA)software,suchasABAQUS.ThispaperpresentsastudyontheSRM-basedstabilityanalysisofslopesusingABAQUS.Firstly,abriefoverviewoftheSRMtheoryispresented.Then,athree-dimensionalfiniteelementmodelofaslopeundergravityloadingisestablishedinABAQUS.ThematerialpropertiesofthesoilaredefinedusingtheMohr-Coulombconstitutivemodel.Theresponseoftheslopeisanalyzedunderdifferentfailuremodes,includingcircularfailureandplanefailure.Thecriticalsafetyfactoriscalculated,whichistheratioofthestrengthofthesoiltotheappliedloadthatcausesfailure.Basedontheresultsoftheanalysis,itisconcludedthattheSRMisausefultoolforslopestabilityanalysis,andABAQUScanprovideaccuratenumericalsolutionsforcomplexengineeringproblems. Keywords:slopeinstability,strengthreductionmethod,ABAQUS,finiteelementanalysis,safetyfactor Introduction Slopeinstabilityisacommonissueincivilengineeringandgeotechnicalengineering.Itreferstothephenomenonwhenthesoilorrockonaslopefailsandslidesdownundertheeffectofgravityandotherexternalforces.Slopeinstabilitycanresultinseriousconsequences,suchaspropertydamage,economicloss,environmentalpollution,andlossoflife.Therefore,itiscrucialtoevaluatethestabilityofslopesbeforeandduringconstruction,andtakemeasurestopreventslopefailure. Thestrengthreductionmethod(SRM)isawidelyusedmethodforstabilityanalysisofslopesbasedonfiniteelementanalysis(FEA)software,suchasABAQUS.TheSRMisanumericalmethodthatreducesthestrengthofthesoiluntilafailurecriterionisreached.Thereductionfactorisgraduallyincreaseduntiltheslopefails.Thecriticalsafetyfactor,definedastheratioofthestrengthofthesoiltotheappliedloadthatcausesfailure,canbecalculatedusingtheSRM.TheSRMhasbeenappliedtovarioustypesofslopes,suchasembankments,rockslopes,andnaturalslopes.However,theaccuracyandreliabilityofthe