江西建材质量控制与检测·89·2023年1月作者简介：邓星（1989-），男，湖北孝感人，硕士，工程师，主要研究方向为岩土工程勘察、设计。深基坑双排桩支护结构变形敏感性分析邓星孝感市城乡规划建筑设计院有限责任公司，湖北孝感432000摘要：文中以某深基坑为研究对象，通过数值手段研究基坑施工过程中双排桩支护结构水平变形规律，并系统分析了深基坑双排桩支护结构变形影响因素。研究表明，在一定范围内，双排桩排距对双排桩变形有显著影响，本工程合理的双排桩排距范围为5~6D。在一定范围内提升双排桩桩径和刚度，可以有效控制支护结构水平变形；当双排桩桩径和刚度增大到一定临界值后，增大双排桩桩径和刚度对控制双排桩水平变形效果有限，在连梁高度1.0m范围内增加连梁高度可有效减小双排桩水平变形。关键词：深基坑；双排桩支护；水平变形；参数分析中图分类号：TU473.1文献标志码：A文章编号：1006-2890（2023）01-0089-03ExperimentalStudyontheEffectofLimeStrengtheningSoftSoilSubgradeDengXingXiaoganUrban&RuralPlanningandArchitecturalDesignInstituteCo.Ltd.,Xiaogan,Hubei432000Abstract:Thispapertakesadeepfoundationpitastheresearchobject,andstudiesthehorizontaldeformationlawofthedouble-rowpileretainingstructureduringthefoundationpitconstructionbynumericalmeans.Theinfluencefactorsofdeformationofdouble-rowpileretainingstructureindeepfoundationpitareanalyzedsystematically.Theresearchshowsthattherowspacingofdouble-rowpileshasasignificantimpactonthedeformationofdouble-rowpileswithinacertainrange.Thereasonablerangeofrowspacingofdouble-rowpilesinthisprojectis5~6D.Thehorizontaldeformationofthesupportingstructurecanbeeffectivelycontrolledbyraisingthediameterandrigidityofthedouble-rowpileswithinacertainrange;Whenthediameterandrigidityofdouble-rowpilesincreasetoacriticalvalue,theeffectofincreasingthediameterandrigidityofdouble-rowpilesoncontrollingthehorizontaldeformationofdouble-rowpilesislimited.Thehorizontaldeformationofdouble-rowpilescanbeeffectivelyreducedbyincreasingtheheightofcouplingbeamwithin1.0m.Keywords:Deepfoundationpit;Doublerowpilesupport;Horizontaldeformation;Parameteranalysis0引言针对基坑采用双排桩支护的问题，万瑜［1］基于某...
