Vol.49,No.9September,2023搅拌桩复合地基桩土相互作用及变形特性数值仿真刘陈凤,相福颖,季圣博,李文闻（常熟理工学院，江苏苏州215500）摘要：水泥搅拌桩复合地基可以有效地解决地基承载力不足的问题,在市政工程中的使用日益广泛。目前，针对水泥搅拌桩复合地基的研究还未广泛开展，其承载机理和受力特性有待阐释。通过数值模拟的方法研究模拟单桩荷载传递规律，并基于对不同工况的模拟数据，阐释搅拌桩复合地基的变形特性。结果表明：水泥搅拌桩的单桩承载力要考虑其桩长和桩土界面摩擦角；桩长不足时考虑增加搅拌桩处理范围或者联合其他地基处理方法，以减小沉降。关键词：水泥土搅拌桩；复合地基；桩土相互作用；三维数值模拟中图分类号：TU473文章编号：1672-4011(2023)09-0068-04D01:10.3969/j.issn.1672-4011.2023.09.027NumericalsimulationofsoilinteractionanddeformationcharacteristicsofmixingpilecompositefoundationLIUChenfeng,XIANGFuying,JIShengbo,LIWenwen(ChangshuInstituteofTechnology,Suzhou215500,China)Abstract:Cementmixingpilecompositefoundationcaneffective-lysolvetheproblemofinsufficientbearingcapacityoffounda-tion,anditisincreasinglyusedinmunicipalengineering.Atpresent,theresearchonthecompositefoundationofcementmix-ingpilehasnotbeenwidelycarriedout,anditsbearingmecha-nismandforcecharacteristicsstillneedtobeexplained.Inthispaper,westudythesimulatedmonopileloadtransferlawbynu-mericalsimulationandexplainthedeformationcharacteristicsofthecompositefoundationofmixedpilebasedonthesimulationdataofdifferentworkingconditions.Theresultsshowthatthepilelengthandthefrictionangleofthepile-soilinterfaceshouldbeconsideredforthemonopilebearingcapacityofcementstirredpile;whenthepilelengthisinsufficient,increasethestirredpiletreatmentrangeorcombinewithotherfoundationtreatmentmeth-odstoreducethesettlement.Keywords:cement-soilmixingpile;compositefoundation;pile-soilinteraction;three-dimensionalnumericalsimulation0引言近年来，我国城市市政建设取得长足发展，搅拌桩复合地基桩在道路路基处理上得以广泛的应用。搅拌桩复合地基桩作为加固软土地基的一种较为有效的方法,适用土质类收稿日期：2022-03-30作者简介：刘陈凤（1999一），女，江苏连云港人，在...
