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基于围岩位移控制的超大断面黄土隧道施工方法研究

程选生, 王建华

程选生, 王建华. 基于围岩位移控制的超大断面黄土隧道施工方法研究[J]. 岩土工程学报, 2013, 35(zk1): 82-89.
引用本文: 程选生, 王建华. 基于围岩位移控制的超大断面黄土隧道施工方法研究[J]. 岩土工程学报, 2013, 35(zk1): 82-89.
CHENG Xuan-sheng, WANG Jian-hua. Construction methods for loess tunnels with super-large cross-section based on displacement control of surrounding rock[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 82-89.
Citation: CHENG Xuan-sheng, WANG Jian-hua. Construction methods for loess tunnels with super-large cross-section based on displacement control of surrounding rock[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 82-89.

基于围岩位移控制的超大断面黄土隧道施工方法研究  English Version

详细信息
    作者简介:

    程选生(1972- ),男,甘肃省甘谷县人,博士后,教授,博士生导师,主要从事防灾减灾工程与防护工程方面的教学和科研工作。E-mail: cxs702@126.com。

  • 中图分类号: TD853.34

Construction methods for loess tunnels with super-large cross-section based on displacement control of surrounding rock

  • 摘要: 为了确定超大断面黄土隧道的最优施工方法,考虑隧道衬砌结构和土体的弹塑性本构关系,利用有限元软件——ANSYS,采用6种施工方法(CD法、CRD法、单壁导坑法、双臂导坑法、预挖开挖法和预留开挖法)对超大断面黄土隧道进行了数值仿真。通过对围岩控制点位移的对比分析可知:对于超大断面黄土隧道的施工,CRD法为最优施工方法;施工中加临时支撑时,中部临时支撑对于围岩稳定性具有较大影响,临时支撑拆除前后隧道围岩的塑性等效应变均增加了约20%。
    Abstract: In order to determine the optimal construction method for loess tunnels with super-large cross-section, considering the elastoplastic constitutive relation between tunnel lining and soil and using FEM software ANSYS, a case of loess tunnel with super-large cross-section is calculated by means of six kinds of methods, which are CD method, CRD method, single-wall excavation method, double-wall excavation method, pre-excavation core soil method and pre-retaining core soil method. By comparing the displacement results of control nodes, the results show that, for the loess tunnel with super-large cross-section, the CRD method is the optimal one. When temporary support is added in construction, the central temporary support has great influence on the stability of surrounding rock, and equivalent plastic strain is increased by about 20% before and after demolition of the temporary support.
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出版历程
  • 收稿日期:  2013-03-01
  • 发布日期:  2013-07-18

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    WANG Jian-hua

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