悬臂式双排桩与承台式双排桩的对比研究.pdf

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1、第41卷，第2期公路工程V01．41，No．2悬臂式双排桩与承台式双排桩的对比研究温祥虎1’2，叶四桥k3，毛晓光4(1．重庆交通大学水利水运工程教育部重点实验室，重庆400074；2．中交西航局港湾工程设计院有限公司，广东广州510230；3．重庆市地质矿产勘查开发局，重庆400074；4．武汉市政工程设计研究院，湖北武汉430023)[摘要]为厘清悬臂式双排桩和承台式双排桩的内力和位移分布特性及适用性，运用ABAQUS有限元软件分别建立两者的三维分析模型，对两者的位移和内力分布进行对比分析，得出：悬臂式双排抗滑桩的前后排桩的弯矩和剪力分布差距较大，承台式双排抗滑桩的前

2、后排桩的弯矩和剪力分布比较接近，前排桩受压力和后排桩受拉力，产生力矩来抵抗倾覆，且后者比前者的位移小。选取承台式双排抗滑桩的工程实例分析，监测发现承台式双排抗滑桩前后排桩的位移和弯矩分布较接近，与数值模拟分析规律相一致，建议在双排抗滑桩的设计中采用承台式双排抗滑桩。[关键词】悬臂式双排桩；承台式双排桩；滑坡；对比分析；工程实例[中国分类号】U443．15【文献标识码】A[文章编号】1674—0610(2016)02—0251—05CapDouble-rowPilesWENXianghul”，YESiqia01”，MAOXiaoguan94(1．KeyLaboratoryo

3、fHydraulicandWaterwayEngineeringoftheMinistryofEducation，ChongqingJiao·tongUniversity，Chongqing400074，China；2．EngineeringDesignInstituteCo．．Ltd．ofCCCCForthHarborEngineeringCo．，Ltd．Guangzhou，Guangdong510230，China；3．ChongqingBureauofGeolo-gYandMineralResources，Chongqing400074，China；4．WuhanM

4、unicipalEngineeringDesign＆Re·searchInstitute，Wuhan，Hubei430023，China)[Abstract]Thecantileverdouble—rOWanti．slidepilesand出ecushioncapdouble—rOWanti—slidepilesarethetwocommontypes．Toclarifytheinternalforceanddisplacementdistributioncharacteristicsandapplicability．Basedonthefiniteelementprog

5、ramABAQUS，three—dimensionalfiniteelementanalysisofmodelsofthetwotypesdouble—rowpilesareestablishedseparately．Comparedthedisplacementandtheinternalforcedistributionofcantileverdouble．rowanti．slidepileswithcushioncapdouble—rOWanti-slidepiles．Forthecantileverdouble—rowanti—slidepiles。thediff

6、erenceofbendingmomentandshearforcedis．tributionbetweenthefrontandbackrowpilesiSveryobvious．Forthecushioncapdouble．rowanti．slidepiles，thedifferenceisverysmall，frontrowpilebypressureandbackrowpilebypulled，resultinginre-sistancetooverturningmoment．Andthelatterisasmalldisplacement．Selectingcu

7、shioncapdouble—rowanti—slidepilesengineeringcase，monitoringandanalyzingfoundthatthedifferenceofdisplacementandbendingmomentdistributionbetweenthefrontandbackrowpilesisverysmall，whichisshownthattheresultsconsistentwiththelawoffiniteelementanalysis．Sowesuggestusingthe