大断面黄土地铁隧道不同浅埋暗挖施工方法比较分析
任建喜陈旭曹西太郎
Comparative Analysis of Different Shallow Buried Excavation Methods for Large Section Loess Subway Tunnel
REN JianxCHEN XuCAO Xitailang
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作者信息:西安科技大学建筑与土木工程学院，710054，西安
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Affiliation:College of Architecture and Civil Engineering， Xi′an University of Science and Technology， 710054， Xi′an， China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.01.028
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中图分类号/CLCN:U455.4
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栏目/Col:施工技术
摘要:
为了确定大断面黄土暗挖地铁隧道的合理施工方法，以西安地铁5号线某区间工程为背景，通过FLAC3D软件对地铁区间隧道采用中隔壁（CD）法、交叉中隔壁（CRD）法及双侧壁导坑法等不同开挖方式下的施工过程进行模拟计算，以期得到合理的施工方法。根据模拟结果及实测内容得出：在地表沉降、拱顶沉降及塑性区分布等方面，双侧壁导坑法较好，CRD法次之，CD法最差。综合考虑安全、经济等因素，确定CRD法为大断面地铁区间隧道的合理施工方法。
Abstracts:
In order to determine the reasonable excavation method of subway tunnel with large section of loess, an interval project on Xi′an metro Line 5 is taken as the background, FLAC3D software is used to simulate and calculate the metro tunnel construction process under different excavation methods, including the center diaphragm (CD) method, cross diaphragm(CRD) method and double wall pilot tunnel method. According to the numerical simulation results and the measured data, the performance of double wall pilot tunnel method in surface subsidence control, arch settlement control and plastic zone distribution is the best, the CRD method is better and the CD method is the worst. Considering the factors such as safety and economy, the CRD method is regarded as a reasonable one in the construction of large section subway tunnel.
引文 / Ref:
任建喜，陈旭，曹西太郎.大断面黄土地铁隧道不同浅埋暗挖施工方法比较分析[J].城市轨道交通研究，2020，23（1）：120.
REN Jianx，CHEN Xu，CAO Xitailang.Comparative Analysis of Different Shallow Buried Excavation Methods for Large Section Loess Subway Tunnel[J].Urban mass transit，2020，23（1）：120.
REN Jianx，CHEN Xu，CAO Xitailang.Comparative Analysis of Different Shallow Buried Excavation Methods for Large Section Loess Subway Tunnel[J].Urban mass transit，2020，23（1）：120.
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