盾构隧道施工对既有浅基础建筑的影响分析

——考虑水平间距与埋深因素

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中图分类号：TU997 文献标识码：A 文章编号：2097-5465（2026）02-0084-11

Abstract：Toinvestigatethedeformationinfluenceofmetroshieldtunnelingonadjacentshallow-foundationbuildings，thisstudyis basedonatypicalshieldtunelingprojectinBeijingAthre-dimensionalcoupledmodeloftheshieldtunel，soil，andshalowfoundationbuildingwasestablishedusingtheFLAC3Dnumerical simulationsoftware.Thesetlementanddeformation characteristicsofthebuildingunderdiferenthorizontaldistancesandburialdepthswereanalyzed.Theresultsindicatethatthe setlementanddeformationofthebuildingincreaseasthehorizontaldistancebetweenthetunnelandthebuildingdecreases.When thetunelburialdepthincreasesfrom23mto9m，therangeof grounddisturbanceexpands，leadingtoanincreaseinboththe overallsettlementandhorizontaldeformationofthebuilding.Thebuildingfoundationconstrainsthesapeofthesurfaceselement trough，resultingina"U"-shapedsetlementdistributionwhenthetunnelpassesbeneath.Thestudyrevealsthedeformation behaviorandspatialffectsofbuldingsinducedbyshieldtunneling，providingareferenceforriskasessmentandcontrolinsimilar urban metro projects.

Keywords：shieldtunnel；deformationofshalowfoundationbuilding；horizontaldistance；tunnelburialdepth；numerical simulation

0 引言

随着我国城市轨道交通建设的快速发展，地铁已成为城市公共交通的核心制式，截至2024年底，地铁运营里程占城市轨道交通运营里程的 76.27%[1] 。（剩余10644字）