2023年第1期(总第347期)黑龙江交通科技HEILONGJIANGJIAOTONGKEJINo.1,2023(SumNo.347)软土路基泡沫轻质土分层填筑沉降分析及参数影响研究丁英(中国电建集团贵阳勘测设计研究院有限公司,湖北武汉432000)摘要:为研究泡沫轻质土在软土路基分层置换填筑时的沉降规律,基于Abaqus数值计算平台建立了泡沫轻质土分层填筑路基的有限元模型,分析了不同填筑阶段路基沉降的规律,并对泡沫轻质土相关参数展开研究,探讨了不同参数变化对路基沉降的影响规律。计算结果表明:不同填筑阶段路基顶面沉降均呈马鞍形分布;路基最大沉降区域位于第一层与第二层泡沫轻质土之间;弹性模量和泊松比与路基中线沉降量呈负相关关系;粘聚力变化对路基沉降无显著影响。关键词:泡沫轻质土;软土路基;路基沉降;数值模拟;参数分析中图分类号:U416.1文献标识码:A文章编号:1008-3383(2023)01-0049-03SettlementAnalysisandParameterInfluenceStudyofLayeredFillingWithFoamLightSoilforSoftSoilSubgradeDINGYing(POWERCHINAGuiyangSurveyandDesignResearchInstituteCo.,Ltd.,Wuhan,Hubei432000,China)Abstract:Inordertostudythesettlementlawoffoamlightweightsoilinthelayeredreplacementofsoftsoilsubgrade,afiniteelementmodeloflayeredsubgradefillingwithfoamedlightweightsoilwasestablishedbasedontheAbaqusnumericalcalculationplatform,andthesettlementofsubgradeindifferentfillingstageswasanalyzed.Therelevantparametersoffoamlightweightsoilwerestudied,andtheinfluenceofdifferentparameterchangesonthesettlementofsubgradewasdiscussed.Thecalculationresultsshowthatthesettlementofthetopsurfaceofthesubgradeindifferentfillingstagesisdistributedinasaddleshape;themaximumsettlementareaofthesubgradeislocatedbetweenthefirstlayerandthesecondlayeroffoamlightsoil;theelasticmodulusandPoisson'sratioarenegativewiththesettlementofthesubgradecenterline.Correlationcohesionchangehasnosignificanteffectonsubgradesettlement.Keywords:foamedlightsoil;softsoilsubgrade;subgradesettlement;numericalsimulation;parameteranalysis收稿日期:2022-05-19作者简介:丁英(1988—),女,湖北武汉人,本科,工程师,主要从事道路设计0前言大规模沉降是路基病害中最普遍且最影响路面安全的病害之一,尤其在地质条件不佳的软土区,...