城市轨道交通盾构隧道变形超限的壁后注浆加固治理技术
顾志敏吴哲
Research on Wall Grouting Reinforcement Measures for Urban Rail Transit Shield Tunnel Deformation Exceeding Limit
GU ZhiminWU Zhe
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作者信息:苏州市轨道交通集团有限公司运营一分公司，215101，苏州
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Affiliation:Suzhou Rail Transit Group Co., Ltd., 215101, Suzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.05.014
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中图分类号/CLCN:U457+.3
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栏目/Col:研究报告
摘要:
城市轨道交通盾构隧道结构超限变形极有可能引发隧道结构失稳甚至破坏，使其丧失使用功能。因此需要采取必要加固或纠偏措施治理盾构隧道结构超限变形。以苏州轨道交通实际运营线路盾构隧道例，介绍了盾构隧道管片壁后注浆横向纠偏技术，结合三维激光扫描监测数据分析了盾构隧道管片壁后注浆加固效果。由分析可知，管片壁后注浆可有效提升盾构隧道结构的强度，能够纠正盾构隧道结构超限收敛变形，纠偏范围可控制在0～20 mm内。同时需通过轨道精调等处理道床存在的问题，这可有效控制盾构隧道变形超限带来的结构问题。
Abstracts:
AbstractUrban rail transit shield tunnel structure deformation exceeding limit can possibly cause tunnel structure instability and even destruction, loss of functionality. Therefore necessary reinforcement or correction measures for treating shield tunnel structure deformation exceeding limit should be adopted. Taking shield tunnel of Suzhou rail transit operating lines as an example, the lateral rectification technology of shield tunnel grouting behind segment wall is introduced. With the 3D laser scanning monitoring data, the reinforcement effect of shield tunnel grouting behind segment wall is analyzed. Analysis shows that grouting behind segment wall can effectively improve shield tunnel structure strength, the shield tunnel structure convergence deformation exceeding limit can be rectified, and the range can be controlled within 0-20 mm. At the same time, existing problems of track bed can be treated through track fine adjustment, and structure problem caused by shield tunnel deformation exceeding limit can be effectively controlled.
引文 / Ref:
顾志敏, 吴哲. 城市轨道交通盾构隧道变形超限的壁后注浆加固治理技术. 城市轨道交通研究, 2022, 25(5): 61.
GU Zhimin, WU Zhe. Research on wall grouting reinforcement measures for urban rail transit shield tunnel deformation exceeding limit. Urban Mass Transit, 2022, 25(5): 61.
GU Zhimin, WU Zhe. Research on wall grouting reinforcement measures for urban rail transit shield tunnel deformation exceeding limit. Urban Mass Transit, 2022, 25(5): 61.
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