盾构隧道下穿施工对严重倾斜挡墙影响及加固措施分析

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Analysis of the Influence of Shield Tunnel Construction on the Existing Eerious Inclined Retaining Wall and the Reinforcement Measures in Advance

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中图分类号：TU375 文献标志码：A 文章编号：1005-8249（2025）01-0145-05

DOI：10.19860/j.cnki.issn1005- 8249.2025.01.027

LIU Xiaorui1，ZHANG Han2

(1. Beijing Construction Quality 3rd Text Limited Liability Company， Beijing 1OOO37，China； 2. Beijing Municipal Engineering Research Institute， Beijing 1OoO37， China ）

Abstract：Theconstructionof subway tunnel willhaveanadverseefectonthedeformationof thesuperstructure.And the structuralsafetystateof thesurfacestructure beforeconstructionhasasafetyconsiderationfortheconstructionof the tunel project，andeven determinesthe feasibilityoftheprojectimplementation.Beforesubwayconstruction，itisnecesaryto evaluatethe status of existingroad facilities.At present，ifthereare structural safetyhazards inthestructures before subway construction，sructuralreinforcementanddisposalareoftencarredoutwithoutanalysis，resultinginincreasedcostsanddelays inconstructionperiod，andevenadversesocialimpacts.Taking thesectionofHepingxiqiao Station\~Guangximen Stationof Beijing MetroLine12asan example，thispaper analyzedthecausesof theserious inclinationof theexisting prefabricated retaining wallbasedontheradarandtotal station detectiondata，andanalyzedtheinfluenceof theconstructionof thesubway sectiononthedeformationoftheretaining wallbasedonthecontinuous mediumdynamicsanalysissoftwareFLAC.Itwilavoid the existing measuesofreinforcement whentheinclination exceeds thestandard，andsave investmentandconstructionperiod.

Keywords：tunnelunderpassconstruction；seriouslyinclinedretaining wall；deformationimpactanalysis；reinforcementmeasures

0 引言

随着我国的经济发展和城市化建设，地铁规模逐渐增大，目前在建或已规划的地铁建设路线均需穿越城市繁华地区，这些地区建（构）筑物、城市道路交通设施等均已建成并稳定运行、使用。（剩余7543字）