CFG桩复合地基承载特性及工程应用研究的中期报告.docx

该【CFG桩复合地基承载特性及工程应用研究的中期报告 】是由【niuww】上传分享，文档一共【5】页，该文档可以免费在线阅读，需要了解更多关于【CFG桩复合地基承载特性及工程应用研究的中期报告 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。CFG桩复合地基承载特性及工程应用研究的中期报告Abstractpositefoundationisanewtypeofpilefoundation,,positefoundationarestudied,-termreportanalyzestheinfluenceoftheCFGpilediameterandspacing,positefoundation,:positefoundation,bearingcapacity,diameter,spacing,thickness摘要CFG桩复合地基是一种新型的桩基础,它将CFG桩和复合地基的优点相结合,具有良好的承载性能和经济效益,在工程实践中得到广泛应用。本文研究了CFG桩复合地基的承载特性,分析了影响其承载力的因素。中期报告分析了CFG桩直径、间距、复合地基厚度、土壤物理参数对CFG桩复合地基承载力的影响,并提出了一些工程应用建议。关键词:CFG桩,复合地基,承载力,直径,间距,厚度1Introductionpositefoundationisanewtypeoffoundation,,,whichcannotonlyimprovethebearingcapacityofthefoundation,,positefoundationareaffectedbymanyfactors,suchastheCFGpilediameterandspacing,positefoundationthickness,thesoilphysicalparameters,,,suchasthepilediameter,length,concretestrength,soilproperties,,thebearingcapacityofCFGpilecanbeexpressedas:Qb=Ap×σcp+Pi×Ap(1)Intheformula,Qbistheultimatebearingcapacityofthepile;Apisthecross-sectionalareaoftheCFGpile;pressivestrengthoftheCFGpileconcrete;-diameterCFGpilehasalowerbearingcapacitythanlarge-,andthehigherthestrength,,suchasthethicknessoftherigidlayer,themodulusofelasticityoftheelasticlayer,thebearingcapacityofthesoil,,positefoundationcanbeexpressedas:Qc=W×Δi+Qu(2)Intheformula,positefoundation;Wistheareaofthefoundation;positefoundation;,,:Qp′=Qb+Qc-×γa×Dc×Ap(3)Intheformula,Qp'positefoundation;positefoundation;,positefoundationthickness,soilphysicalparameters,,theareaoftheCFGpilecrosssectionandtheCFGpilebearingcapacityincrease,,theinteractionbetweenCFGpilesdecreasesandthesoildeformationbetweenCFGpilesincreases,,therigidityoftherigidlayerincreasesandthedeformabilityoftheelasticlayerdecreases,,,,,,,,,positefoundation,,thesoilphysicalparametersshouldbetestedandanalyzed,,,suchastheCFGpilediameterandspacing,positefoundationthickness,thesoilphysicalparameters,,-termreportanalyzestheinfluenceoftheCFGpilediameterandspacing,positefoundationthickness,positefoundation,andputsforwardsomeengineeringapplicationsuggestions.