EngineeringConstruction2023年6月51建程设第6期第55卷地铁盾构隧道与邻近深基坑开挖相互影响分析刘喆（南昌轨道交通集团有限公司，江西南昌330038）摘要：为了研究地铁盾构隧道对邻近深基坑围护结构在不同施工工况下的受力和变形特征的影响，深基坑开挖施工对邻近盾构隧道衬砌结构受力和变形特征的影响，基及坑、周围土体和邻近隧道结构的相互作用机理，本文采用岩土有限元分析软件MIDASGTSNX，对盾构隧道侧穿邻近深基坑开挖工程进行仿真模拟，计算得到了不同工况条件下地下连续墙的水平侧移和受力变化特点、内支撑的受力特点，并将其与无邻近隧道时的计算结果进行对比，对基坑开挖前后邻近隧道衬砌结构的受力特征进行了分析。通过计算分析得到了深基坑开挖与邻近盾构隧道结构相互作用的力学特征，研究结果可以为深基坑和盾构隧道设计施工中的风险控制提供借鉴。关键词：地铁盾构隧道；深基坑；衬砌；有限元分析中图分类号：U231.4;TU753文献标识码：A文章编号：1673-8993(2023)06-0051-07doi:10.13402/j.gcjs.2023.06.076AnalysisofInteractionbetweenmetroshieldtunnelandadjacentdeepfoundationpitexcavationLIUZhe(NanchangRailTransitGroupLimitedCorporation,Nanchang330038,Jiangxi,China)Abstract:Inordertostudytheinfluenceofthesubwayshieldtunnelonthestressanddeformationcharacteristicsoftheretainingstructureoftheadjacentdeepfoundationpitunderdifferentconstructionconditions,theinfluenceofthedeepfoundationpitexcavationonthestressanddeformationcharacteristicsoftheadjacentshieldtunnelliningstructure,andtheinteractionmechanismofthefoundationpit,thesurroundingsoilandtheadjacenttunnelstructure,theshieldtunnelpassingthroughtheadjacentdeepfoundationpitexcavationengineeringissimulatedbyusingthegeotechnicalfiniteelementanalysissoftwareMIDASGTSNX.Thehorizontallateraldisplacementandstressvariationcharacteristicsofdiaphragmwallandthestresscharacteristicsofinternalsupportunderdifferentworkingconditionsarecalculated,andcomparedwiththecalculationresultswithoutadjacenttunnel.Thestresscharacteristicsofadjacenttunnelliningstructurebeforeandaftertheexcavationofthefoundationpitareanalyzed.Throughcalculationandanalysis,themechanicalcharacteristicsoftheinteractionbetween...
