軌道交通深基坑減壓降水精細(xì)化管控技術(shù)研究

——以上海地鐵21號(hào)線某車(chē)站為例

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中圖分類(lèi)號(hào)：P642.26；TU46+3 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：2095-1329（2025）02-0047-07

Research on refined control technology for depressurization and dewatering of deep foundation pits in rail transit： taking a station on Shanghai metro line 21 as an example

YIN Lifeng

ShanghaiChangkaiGeotechnical EngineeringCo.，Ltd.，Shanghai20oo93，China

Abstract：Againstthebackdropofrapidurbanizationandhigh-densityurbanexpansion，theconstructionenvironmentofurbanrail transitiscomplexandtedveesocialmpactsadsfetyacdentsusedbystementofsoudgoussandoadufacsdue tofoundationpitostructiarenotucomoAsooftheimpoantsksousinteostructionprocesofeefoundatipits， depresurizationandprecipitationofpressedwaterarecucial.Iispartiularlyimportant toontroltemeasoablydmiie theadverseeffectsofprecipitationonsuoundingbuildings （structures）whileensurigthesafetyofthefoundationpit.Thisarticle takesthedeepfoundationpitprojectofastationonShangaiMetroLineasanexampletoitroducetheoveralideaoffecotrol ofdeepfoundationpitdeprsurzatonanddewatering.Combingon-sitepumpgtests，umeicalsimulatincalculations，caation conditionsubdivisionoffoundationpits，nddigitaldwateingsystems，teadversefectsofdepresszationanddewateringduring excavationontheoutsideofthepitaregreatlyeducd，maintainngthesafetyofsuoundingbuildingsandprovidingrefereceand inspiration for the construction of similar projects in the future.

Key words： deep foundationpits; refinedcontrol; numericalsimulation;workingconditionsegmentation; digitaldewatering

對(duì)于富水軟土地區(qū)，地鐵車(chē)站基坑降水及開(kāi)挖的共同作用引起的基坑及周?chē)馏w的變形規(guī)律和影響一直以來(lái)便是軌道交通建設(shè)的關(guān)鍵[1-2]。（剩余9897字）