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Home > Urban and Rural Studies > 2023 No.21 > 富水承压粉土层中暗挖通道密贴下穿既有地铁车站 不同开挖工法对比分析

  • 富水承压粉土层中暗挖通道密贴下穿既有地铁车站 不同开挖工法对比分析

    Author(s)：

    张文博

    Publication Title：

    Urban and Rural Studies 2023 No.21

    Affiliations：

    中铁上海设计院集团有限公司

    Abstract：

    针对富水承压粉土地层中暗挖通道密贴下穿皆有车站工程，本位以徐州市地铁2号线市政府站工程为工程案例，利用三维数值模拟软件Midas/GTS对该工程进行建模分析，在典型断面和支护参数情况，对CRD法、CD法、台阶法加临时横撑法和全段断面法4种开挖工法的暗挖通道初期支护变形和既有车站结构沉降进行对比分析。计算结果表明，若对既有车站结构沉降变形控制较为严格，CRD法和CD法明显优于台阶法和全断面法；若对既有车站结构沉降变形控制较为宽松，从现场快速施工完成下穿的角度，应优先选择台阶法预留核心土或台阶法加临时横撑。

    Keywords：

    城市轨道交通；暗挖通道；富水承压粉土 层；密贴下穿；开挖工法

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    [1] 张文博.富水承压粉土层中暗挖通道密贴下穿既有地铁车站 不同开挖工法对比分析[J].Urban and Rural Studies,2023(21),.

城镇建设
Urban and Rural Studies

Language: 中文

CN：10-1589/TU

ISSN：2096-6539

Publication Frequency: 半月刊

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