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1、POLLACKPERIODICAAnInternationalJournalforEngineeringandInformationSciencesDOI:10.1556/Pollack.8.2013.2.13Vol.8,No.2,pp.117–129(2013)www.akademiai.comMODELINGLATERALLYLOADEDPILESJánosSZÉPDepartmentofStructures,SzéchenyiIstvánUniversity,1Egyetemtér,Győr,H-9026,H
2、ungarye-mail:szepj@sze.huReceived9January2012;accepted4November2013Abstract:Singlerowpilegroupsaregainingpopularityasfoundationsystemforbothbuildingsandbridges.Theyareareasonableandeconomicalsolutionsforstructureswithlowverticalloadse.g.bridgeabutments.Thelate
3、ralresistanceofapilegroupistheresultofcontactpressurebetweentheindividualpileshaftsandthesoil.Whendesigningthiskindofstructure,theestimationofdisplacementsandbendingmomentsisthemainfocusofthecalculation.InmostcasessinglepilesaremodeledbyassumingaWinklermateria
4、l.Fortheircalculations,designerstypicallyemployoneofthecommonly-usedstructuralFEMcodes(e.g.AxisVM,Fem-Design).Ontheotherhand,advanced,truly3DFEMpackages(likeMIDASGTS,Plaxis3D)areavailable,allowingforrealisticmodelingofthesoilenvironmentandsoil-structureinterac
5、tion.Asanintermediatesolution,packagesbasedontraditionalapproachesarealsoavailable(GEO5,CGU).Inthispaper,resultsobtainedusingthreedifferentcalculationmethodsandpackagesarecompared.Keywords:FEM,Springconstant,Soil-structureinteraction1.SinglerowpilegroupPilesar
6、eisthemostextensively-usedfoundationmethodwhenitisnecessarytocarry,bothverticalandhorizontalloads.Well-establishedmethodsexistforcalculatingtheverticalcapacityofpiles.Numerousmethodsarealsoavailabletocalculatepiledeformations,bendingmomentsandshearforcesduetol
7、ateralloading.Unfortunately,theresultsgeneratedbydifferentmodelsshowsignificantvariation.Themostcommonmodelforpilessubjectedtolateralloadsistheelasticallysupported(Winkler[1])beam.Piledimensions,forcesandmoments,aswellasreinforcementschedulesaregenerallyHUISSN
8、1788–1994©2013AkadémiaiKiadó,Budapest118J.SZÉPcalculatedwithFEMpackages.Asaconsequence,thelinearlyelasticmaterialmodelsemployedinthese-so-called‘structural’-packagesaremostlysuitab
