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隧道建设（中英文） ›› 2022, Vol. 42 ›› Issue (S1): 85-92.DOI: 10.3973/j.issn.2096-4498.2022.S1.010

• 研究与探索 • 上一篇    下一篇

地面堆载下盾构隧道不同加固方法的加固效果研究

魏纲1, 2， 张书鸣3， 崔允亮1， 丁智1   

  1. (1. 浙大城市学院土木工程系， 浙江 杭州 310015； 2. 浙江省城市盾构隧道安全建造与智能养护重点实验室， 浙江 杭州 310015； 3. 安徽理工大学土木建筑学院， 安徽 淮南 232001)
  • 出版日期:2022-07-22 发布日期:2022-08-22
  • 作者简介:魏纲（1977—），男，浙江杭州人，2006年毕业于浙江大学，岩土工程专业，博士，教授，现从事城市地下隧道与周边环境相互影响及风险控制等方面的研究工作。E-mail： weig@zucc.edu.cn。

Reinforcement Effect of Various Methods for Shield Tunnels under Ground Surcharge

WEI Gang1, 2, ZHANG Shuming3, CUI Yunliang1, DING Zhi1   

  1. (1. Department of Civil Engineering, Zhejiang University City College, Hangzhou 310015, Zhejiang, China; 2. Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, Zhejiang, China; 3. School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui, China)
  • Online:2022-07-22 Published:2022-08-22

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摘要： 为研究地面堆载作用下不同加固措施对盾构隧道管片的加固效果，采用有限元进行模拟，设计一组室内模型试验，将相同工况下试验与有限元得到的隧道沉降与变形结果进行对比，以验证有限元模型的可靠性。使用验证后的有限元模型模拟隧道周边注浆加固、内钢圈加固与UHPC加固，分析在地面堆载工况下隧道的沉降与管片变形情况。有限元结果表明： 1）采用注浆方法对隧道周边土体进行加固，可以使隧道在堆载作用下的竖向变形比未加固时的竖向变形减小很多，且对隧道沉降有一定抑制作用； 2）采用内钢圈与UHPC加固隧道内壁，可以明显降低隧道在堆载作用下的竖向变形，但对隧道沉降影响较小。

关键词: 盾构隧道, 地面堆截, 管片, 加固方法, 注浆加固, 内钢圈加固, UHPC加固

Abstract: Finite element simulation method is adopted to examine the effect of various reinforcement methods on shield tunnel segments under ground surcharge. To validate the reliability of the finite element model, a set of the indoor model tests are designed and conducted. Moreover, the tunnel settlement and deformation obtained by the tests are compared with the simulation results under same working conditions. The validated finite element model is then used to simulate the grouting reinforcement around the tunnel, the inner bondedsteel ring reinforcement, and the ultrahighperformance concrete(UHPC) reinforcement. Additionally, the tunnel settlement and the segments′ deformation under the ground surcharge condition are analyzed. The finite element simulation results show the following: (1) The grouting reinforcement for the surrounding soil of the tunnel can reduce the vertical deformation of the tunnel under ground surcharge much than that without reinforcement, and it also has a certain inhibitory effect on the tunnel settlement. (2) The inner bondedsteel ring and UHPC reinforcement can evidently reduce the vertical deformation of the tunnel under ground surcharge condition while has little influence on the tunnel settlement.

Key words: shield tunnel, ground surcharge, segments; reinforcement method, grouting reinforcement, inner bondedsteel ring reinforcement, ultrahighperformance concrete reinforcement

主办单位：中铁隧道勘察设计研究院有限公司    主管单位：中铁隧道局集团有限公司

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