顶管穿越与并行对既有地铁盾构隧道的影响分析
黄建华1袁晓玉2张建昆1
Impact Analysis of Pipe Jacking Crossing and Parallel Construction on Existing Metro Shield Tunnels
HUANG Jianhua1YUAN Xiaoyu2ZHANG Jiankun1
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作者信息:1.福建理工大学土木工程学院，350118，福州
2.安阳学院建筑工程学院，455002，安阳
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Affiliation:1.Department of Civil Engineering, Fujian University of Technology, 350118, Fuzhou, China
2.School of Architectural Engineering, Anyang University, 455002, Anyang, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.03.006
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中图分类号/CLCN:U455.43；U231
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栏目/Col:研究报告
摘要:
［目的］地下暗挖工程中，隧道相互穿越工况越来越多且复杂，因此迫切需要探究其相互作用和影响机制，旨在把隧道变形控制在合理范围内。［方法］结合顶管穿越既有盾构隧道工程实例，模拟分析顶管穿越与并行施工对既有地铁盾构隧道的影响规律并与实测成果验证。［结果及结论］既有隧道变形随着与顶管的距离增大而减小；顶管垂直穿越施工，既有地铁隧道最大变形位于顶管中轴线处；顶管开挖面在距离地铁盾构隧道中轴线12m范围内，地铁盾构隧道变形最大；顶管并行穿越施工的影响区域主要在顶管开挖面前方20m和后方10m范围内。
Abstracts:
［Objective］ In underground excavation projects, the working conditions of tunnels crossing each other are becoming increasingly frequent and complex. It is therefore imperative to investigate their interactions and mutual impact mechanisms to control tunnel deformation within a reasonable range. ［Method］ Based on an engineering case of pipe jacking crossing an existing shield tunnel, a simulation analysis is conducted to study the impact patterns of pipe jacking and parallel construction on the existing metro shield tunnel, and the results are validated against actual measurement data. ［Result & Conclusion］ The deformation of existing tunnel decreases as the distance from the pipe jacking expands. During the pipe jacking vertical crossing, the maximum deformation of the existing metro tunnel occurs at the central axis of the pipe jacking. Within 12 meters of the pipe jacking excavation face from the central axis of the metro shield tunnel, the deformation of the metro shield tunnel reaches its maximum. For pipe jacking parallel crossing construction, the influence zone primarily extends 20 meters ahead of and 10 meters behind the pipe jacking excavation face.
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