土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (1): 26-29.

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内贴钢板治理盾构隧道病害的案例研究

曲荣怀，刘文静，孙 磊   

  1. （中铁第六勘察设计院集团有限公司，天津 300308）
  • 收稿日期:2019-07-19 修回日期:2019-08-15 出版日期:2020-04-20 发布日期:2020-04-20
  • 作者简介:曲荣怀（1984-），工程师，硕士，研究方向为地铁结构设计。

A Case Study on the Mitigating of a Shielded Tunnel Excavation Hazard with Internal Steel Plate

QU Ronghuai, LIU Wenjing, SUN Lei   

  1. (China Railway Liuyuan Group Co. Ltd., Tianjin 300308)
  • Received:2019-07-19 Revised:2019-08-15 Online:2020-04-20 Published:2020-04-20

摘要： 随地铁运营里程及运营时间的不断增加及受周边工程的影响，地铁盾构区间产生各种病害的案例逐渐增多。以某盾构区间病害整治工程为背景，通过数值模拟方法对不同地层中盾构管片在顶部加载、侧向卸载工况下盾构管片的变形进行了分析，并对比了采用内贴钢板加固管片前后的受力及变形情况，将分析结果就管片不同病害提出了针对性的处理措施。工程实践表明，内贴钢板加固盾构管片的效果良好，研究结论可为后续类似工程提供参考意义。

关键词: 地铁, 病害治理, 数值计算, 内贴钢板, 盾构管片

Abstract: With the increase of metro operation mileage and service time as well as the influence of adjacent projects, the number of various hazards in the metro shielded tunneling excavation arealso more frequently encountered. In this paper, the deformation of a shielded tunnel excavation segment in different soil and rock strata under the crest loading and side unloading conditions is analyzed by the numerical simulations. The stress and deformation of shielded segment before and after the reinforcement with the internal steel plate are compared. The correspondent mitigation measures for the various hazards in the shielded segment are proposed. Both the analytical and construction monitoring results indicate that the application of internal steel plate for mitigating the defected shielded tunnel segment is successful.

Key words: Metro Subway, Hazard Mitigation, Numerical Analysis, Inside steel plate, Shield segment

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