地铁隧道变形控制门架式保护方案研究
彭琦
Research on Door Frame Protection Scheme for Metro Tunnel Deformation Control
PENG Qi
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作者信息:深圳市市政设计研究院有限公司，518029，深圳
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Affiliation:Shenzhen Municipal Design and Research Institute Co., Ltd., 518029, Shenzhen, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.06.051
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中图分类号/CLCN:U456.3+3
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栏目/Col:应用技术
摘要:
临近地铁沿线的工程施工，尤其是地铁隧道上部土体的开挖卸荷作用，会对下方的隧道结构产生较大影响。以深圳市前海市政工程双界河水廊道工程为例，运用数值模拟方法，对比分析了门架式保护方案、注浆加固方案和未加固方案下地铁隧道的变形，发现门架式保护方案对地铁隧道的隆起变形可以减少37%。经与现场监测数据对比，地铁隧道现场监测结果与数值模拟结果较吻合,门架式保护方案能够有效减小隧道隆起变形。
Abstracts:
The construction project close to metro line, especially the metro tunnel upper soil excavation unloading effect, will have a greater impact on the tunnel structure below. Taking the project of Shenzhen Qianhai municipal engineering Shuangjie River corridor project as example, using numerical analysis method, metro tunnel deformation conditions in door frame protection scheme, grouting reinforcement scheme and unenforced scheme are comparatively analyzed. The results show that the lifting deformation can be reduced by 37% in door frame protection scheme. After comparing to field monitored data, it is discovered that the actual metro tunnel defor-mation result is consistent with the results of numerical simulation results, and the door frame protection scheme can effectively reduce the tunnel lifting deformation.
引文 / Ref:
彭琦. 地铁隧道变形控制门架式保护方案研究. 城市轨道交通研究, 2022, 25(6): 252.
PENG Qi. Research on door frame protection scheme for metro tunnel deformation control. Urban Mass Transit, 2022,25(6): 252.
PENG Qi. Research on door frame protection scheme for metro tunnel deformation control. Urban Mass Transit, 2022,25(6): 252.
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