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隧道建设(中英文) ›› 2015, Vol. 35 ›› Issue (3): 268-273.DOI: 10.3973/j.issn.1672-741X.2015.03.013

• 施工技术 • 上一篇    下一篇

大跨平顶直墙暗挖通道二次衬砌技术探析

田海波   

  1. (上海市城市建设设计研究总院, 上海 200125)
  • 收稿日期:2014-11-21 修回日期:2015-01-20 出版日期:2015-03-20 发布日期:2015-03-20
  • 作者简介:田海波(1982—),男,湖北襄樊人,2008年毕业于同济大学,道路与铁道专业,硕士,工程师,主要从事隧道及地下工程方面研究工作。

Technology for Secondary Lining of Largespan  Flatroof Straightwall Tunnels

TIAN Haibo   

  1. (Shanghai Urban Construction Design and Research Institute, Shanghai 200125, China)
  • Received:2014-11-21 Revised:2015-01-20 Online:2015-03-20 Published:2015-03-20

摘要:

针对平顶直墙条件下浅埋暗挖通道开挖和二次衬砌施工风险,对平顶直墙结构断面适用条件进行分析。结合国内某城市地铁车站暗挖通道设计实践,综合考虑跨度、开挖方法、风险、工期等因素,对3种不同二次衬砌施工方法进行综合比较,对其优缺点及适用条件进行总结。结合工程实施,提出不拆撑条件下的平顶直墙暗挖结构二次衬砌施工方法和步骤,总结了平顶直墙暗挖设计要点,并提出节点处理原则。

关键词: 地下工程, 浅埋暗挖法, 平顶直墙, 通道, 二次衬砌

Abstract:

The excavation and secondary lining of flatroof straightwall tunnels with shallow overburden have great risks. In the paper, the applicability of the flatroof straightwall tunnels is analyzed. Three methods for the installation of the secondary lining of flatroof straightwall tunnels are compared in terms of span, excavation method, risk and construction period, with a mined flatroof straightwall underpass of a Metro works as an example. The advantages, disadvantages and application conditions of the mentioned three methods are summarized. The installation method and steps for the secondary lining of mined flatroof straightwall structures under the condition that the support is not removed are proposed. The key points of the design of mined flatroof straightwall tunnels are summarized and the principle for the node treatment is proposed.

Key words: underground structure, mining under shallow cover, flat roof, straight wall, secondary lining

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