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ID:37803253
大小:114.84 KB
页数:7页
时间:2019-05-31
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1、ExperimentalandTheoreticalInvestigationsonGeocell-SupportedEmbankments123G.MadhaviLatha;K.Rajagopal;andN.R.KrishnaswamyAbstract:Thispaperstudiestheadvantagesofgeocellreinforcementontheperformanceofearthembankmentsconstructedoverweakfoundationsoilthroughlaborato
2、rymodeltestsandproposesasimplemethodforthedesignofgeocell-supportedembankments.Modelembankmentswereconstructedabovealayerofgeocellsformedusinggeogridsontopofasoftclaybedpreparedinasteeltesttank.Uniformsurchargepressurewasappliedonthecrestandpressure-deformation
3、behavioroftheembankmentandstrainsinthewallsofgeocellsweremonitoredcontinuouslyuntilthefailurewasreached.TheinßuenceonthebehavioroftheembankmentofvariousparametersÑliketensilestiffnessofgeocellmaterial,heightandlengthofgeocelllayer,pocket-sizeofthecell,patternof
4、formationofgeocells,andtypeofÞllmaterialinsidethecellsÑwasstudied.Geocellreinforcementwasfoundtobeadvantageousinincreasingtheload-bearingcapacityandreducingthedeformationsoftheembankments.Theexperimentalresultswerevalidatedusingageneralpurposeslope-stabilitypro
5、gramandadesignprocedureusefulforthepreliminarydesignofgeocell-supportedembankmentsisillustrated.DOI:10.1061/ASCE1532-364120066:130CEDatabasesubjectheadings:Geogrids;Modeltests;Slopestability;Embankment;Design;Reinforcement.Introduction¥Minimizesconstructi
6、ontimeandeliminatesexcavationandreplacementcosts;Constructionofembankmentsoverweaksoilsisacommonly¥Preventsbearingcapacityfailureandminimizesexcessiveencounteredprobleminmanygeotechnicalapplicationslikehigh-settlementsandlateraldeformations;and¥Providesshort-an
7、dlong-termglobalstabilitytothewayandairportrunwayembankments,containmentdikes,ßoodembankment.protectionlevees,earthdams,andberms.Suchjobsarechalleng-Limitedinvestigationswerereportedinliteratureontheperfor-ingforengineersbecauseofthelowshearstrengthofthefoun-ma
8、nceofgeocellreinforcedearthstructuresbyBathurstanddationsoil,whichcausesexcessiveconsolidationsettlementsandJarrett1988,Jenneretal.1988,Bushetal.1990,Deanandbearingcap
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