软土地区地铁车站矩形顶管法施工方案研究
张中杰黄爱军王春凯
Construction Scheme of Rectangular Pipe Jacking Method for Metro Station in Soft Soil Area
ZHANG ZhongjieHUANG AijunWANG Chunkai
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作者信息:上海市城市建设设计研究总院(集团)有限公司，200125，上海
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Affiliation:Shanghai Urban Construction Design and Research Institute (Group) Co., Ltd., 200125, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.07.035
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中图分类号/CLCN:TU94+1； U213.4
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栏目/Col:施工技术
摘要:
对上海轨道交通14号线静安寺站工程，提出了软土地区车站总体布置方案，重点研究了采用矩形顶管法施工所涉及的管片几何断面、管节材料、拼装方式、接缝防水、抗震性能等关键内容并给出了解决方案。经分析，站台层顶管横断面取8.85 m×7.65 m，可采用钢管节+后浇钢筋混凝土结构型式的复合管节；顶管管节纵缝采用刚接接头，环缝采用改进型的F型承插口；暗挖段防水关键在于环缝防水处理，施工阶段采用承插口处弹性密封垫与钢套环挤压防水，使用阶段采用后浇的一体型钢筋混凝土结构防水。经有限元模拟分析表明，14号线静安寺站两端明挖、中间顶管法施工的车站结构可以满足抗震要求。
Abstracts:
Based on the project of Jing′an Temple Station on Shanghai metro Line 14, a general layout plan of metro station built in the soft soil area is proposed. In which, the geometric section, pipe materials, assembling mode, waterproof and seismic capability in the station construction by adopting the rectangular pipe jacking method are mainly studied. Through analysis, when the cross section of pipe jacking at station floor takes 8.85 m×7.65 m, the composite pipe joint of steel pipe joint+post cast reinforced concrete structure should be adopted. The longitudinal joint of pipe jacking joint should adopt rigid connection, and the improved “F” connector is used in the circumferential joint. The key point of waterproof in the undermining section lies in the waterproof treatment of the circumferential joint, and the waterproof at the construction stage depends on the squeeze of elastic gasket and the steel ring, and the waterproof at the service stage depends on the post cast reinforced concrete structure. The results of finite element simulation show that the structure of Jin′gan Temple Station on Shanghai metro Line 14 built with open excavation at both ends and pipe jacking in the middle could meet the seismic performance requirements.
引文 / Ref:
张中杰，黄爱军，王春凯.软土地区地铁车站矩形顶管法施工方案研究[J].城市轨道交通研究，2020，23（7）：163.
ZHANG Zhongjie，HUANG Aijun，WANG Chunkai.Construction Scheme of Rectangular Pipe Jacking Method for Metro Station in Soft Soil Area[J].Urban mass transit，2020，23（7）：163.
ZHANG Zhongjie，HUANG Aijun，WANG Chunkai.Construction Scheme of Rectangular Pipe Jacking Method for Metro Station in Soft Soil Area[J].Urban mass transit，2020，23（7）：163.
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