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多桩复合地基设计方法的探讨.docx

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多桩复合地基设计方法的探讨 Abstract Theuseofcompositefoundationisawidelyadoptedsolutiontoaddressthechallengesassociatedwithweaksoilconditions.Thispaperexploresthedesignmethodsformulti-pilecompositefoundationandthebenefitsassociatedwiththeapproach.Thedesignmethodsdiscussedinthispaperincludetheload-sharingmethod,load-transfermethod,andthecombinedmethod.Variousfactorsthataffecttheperformanceofmulti-pilecompositefoundationareexaminedincludingpilespacing,soiltype,andpilelength.Extensiveresearchhasshownthatthemulti-pilecompositefoundationoffersseveralbenefitsincludingincreasedloadcapacity,reducedsettlement,andimprovedstiffness. Introduction Theuseofcompositefoundationisawidelyadoptedsolutioningeotechnicalengineeringforweaksoilconditions.Itisaneffectivesolutionthatinvolvestheuseofpilesandasoilimprovementtechniquetoimprovetheload-bearingcapacityofthesoil.Compositefoundationsaresuitableforawiderangeofapplicationsincludingbridgeconstruction,industrialbuildings,andretainingwalls.Theobjectiveofthispaperistoexplorethedesignmethodsformulti-pilecompositefoundationandthebenefitsassociatedwiththeapproach. DesignMethodsforMulti-PileCompositeFoundation Therearethreemaindesignmethodsformulti-pilecompositefoundation.Thesearetheload-sharingmethod,load-transfermethod,andthecombinedmethod. Load-sharingMethod Theload-sharingmethodinvolvestheuseofpilesplacedclosetoeachothertodistributetheloadfromthestructuretotheunderlyingsoil.Theloadisdistributedamongthepilesbasedontheirstiffnessandspacing.Thisisachievedbyusingpilingrigsthatdrivepilesataclosedistancefromeachother.Pilesaredriveninapatterntoensuretheyarespaceduniformly. Oneofthebenefitsoftheload-sharingmethodisthattheload-bearingcapacityofthesoilisincreasedduetotheuniformdistributionoftheload.Additionally,theload-sharingmethodissuitableforuseinareaswithhighwatertables,asthepilesaredrivenatarelativelyshallowdepth. Load-transferMethod Theload-transfermethodinvolvestheuseofpilesthatarespacedfurtherapartandaredesignedtotransfertheloadfromthestructuretotheunde