新建换乘通道密贴下穿既有地铁车站施工工序优化
有智慧1苗龙刚2农兴中1江永旺2郭宏博1章慧健2
Optimization of Construction Procedure of Newly\|built Transfer Passage Closely Under passing Existing Metro Station
YOU ZhihuiMIAO LonggangNONG XingzhongJIANG YongwangGUO Hongbo ZHANG Huijian
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作者信息:1.广州地铁设计院股份有限公司，510010，广州；
2.西南交通大学交通隧道工程教育部重点实验室，610031，成都
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Affiliation:Guangzhou Metro Design & Research Institue Co., Ltd., 510010, Guangzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2021.06.022
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中图分类号/CLCN:U456.3
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栏目/Col:施工技术
摘要:
依托新建换乘通道密贴下穿既有地铁车站工程，针对新建换乘通道采用多分部开挖的施工工序难题，采用数值模拟对比分析了3种不同施工工序引起的既有地铁车站、新建换乘通道、围岩介质等的力学响应。结果表明：从既有地铁车站底板附加变形、新建换乘通道初期支护变形及围岩塑性区指标来看，工况1所引起的最大变形值及塑性区体积均相对最小，建议采用工况1为优选施工工序。
Abstracts:
Taking the project of the newly built transfer passage closely under\|passing existing metro station as the background, targeting the construction procedure challenge caused by the newly\|built transfer passage adopting multi\|division excavation, the mechanical responses of existing metro station, newly\|built transfer passage, surrounding rock medium caused by three different excavation procedures are compared and analyzed using numerical simulation. Results show that: judging from the additional deformation index of the existing metro station floor, the initial support deformation of the new transfer passage, the surrounding rock mass plastic zone index, the maximum deformation value and the volume of surrounding rock mass plastic zone of Case 1 are both relatively small, therefore it is recommended to consider Case 1 as the preferred construction procedure.Key wordsmetro station; transfer passage; construction procedure; numerical simulation
引文 / Ref:
有智慧，苗龙刚，农兴中，新建换乘通道密贴下穿既有地铁车站施工工序优化[J].城市轨道交通研究，2021，24（6）：99.
YOU Zhihui，MIAO Longgang，NONG Xingzhong，Optimization of Construction Procedure of Newly\|built Transfer Passage Closely Under passing Existing Metro Station[J].Urban mass transit，2021，24（6）：99.
YOU Zhihui，MIAO Longgang，NONG Xingzhong，Optimization of Construction Procedure of Newly\|built Transfer Passage Closely Under passing Existing Metro Station[J].Urban mass transit，2021，24（6）：99.
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