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1、程中支护结构的变形、地表沉降的变化规律，也从模拟结果与监测数据的对比证明了深基坑开挖支护结构在实际开挖过程中是满足设计要求的。同时，本文的模拟过程与分析结果也为今后同类型的地铁工作井深基坑结构的设计施工提供了宝贵的经验和一定的理论参考价值。关键词：支护结构，深基坑，有限元分析，数值模拟IIABSTRACTInrecentyears,withthedevelopmentofcitymodernizationceaselessly,therapiddevelopmentofeconomy,theimprovementofpeople'
2、slivingstandard,citypopulationpressureincreasing,theundergroundstructurehasincreasinglybecometheeffectivestructureofcitypopulationandalleviatetrafficpressure.Foundationpitengineeringisoneofhotanddifficultproblemsingeotechnicalengineeringfield,howtoeffectivelycontrolth
3、edeformationoffoundationpit,thepitissafeandeconomic,peoplehavebeenexploringthesubject.Howtoeffectivelycontroldeformationoffoundationpitisanimportantfactorthatinfluencesthesafetyoffoundationpit.Afterreadingalotofdomesticrelatedliterature,thebasisofpreviousresearchresul
4、ts,thispapertakesZhengzhousectionofMetroLine6,MaLoustationconstructionperiodofstartingwelldeepfoundationpitconstructionasthebackground,combinedwiththeexperienceandcharacteristicsofsubwayconstructioninotherregionsoftheformer,thedeepfoundationpitsupportingstructureofrow
5、ofpilesandtheactionprinciple,atthesametime,thefiniteelementprogramANSYSintegrityweresimulatedwiththeexcavationstartingwelldeepfoundationpitandsupportingprocess,Specifically:areviewofthedevelopmenthistoryofdeepfoundationpitengineering;expoundsinrecentyearsthedevelopmen
6、tofMetroConstructioninourcountrysituation;introducestheapplicationofthetheoreticalsystemofsupportingstructureofdeepfoundationpit,laidthetheoreticalfoundationofsupportdesignfordeepfoundationpitexcavation.Thesystematicanalysisofthedesignoffoundationpitretainingstructure
7、analysistheory,theearthpressuretheoryresearchindeepfoundationpitengineering,introducesthestructureoftheselection,applicationanddevelopmentofmonitoringprogramandthefiniteelementanalysismethodindeepfoundationpit.AsectionofZhengzhouMetroLine1beforetheconstructionofthedee
8、pfoundationpitconstructionworkwellasbackground,accordingtotheexperienceofMetroConstructioninZhengzhouareaandthespecificgeolo
