地铁盾构区间机械法联络通道施工全过程正线隧道力学响应分析
杜明芳1赵洁1易领兵2,3张鹏4王宗勇2,3任方毅2朱行通5
Mechanical Response Analysis of Mainline Tunnel Structures in the Full Process of Metro Shield Interval Connecting Passage Mechanical Construction
DU Mingfang1ZHAO Jie1YI Lingbing2,3ZHANG Peng4WANG Zongyong2,3REN Fangyi2ZHU Xingtong5
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作者信息:1.河南工业大学土木工程学院，450001，郑州
2.中国交通建设股份有限公司轨道交通分公司，100088，北京
3.中交铁道设计研究总院有限公司，100088，北京
4.中铁隧道局集团（上海）特种高新技术有限公司，201306，上海
5.长春电子科技学院土木工程学院，130114，长春
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Affiliation:1.College of Civil Engineering, Henan University of Technology, 450001, Zhengzhou, China
2.Rail Transit Branch, China Transportation Construction Co., Ltd., 100088, Beijing, China
3.China Jiaotong Railway Design and Research Institute Co., Ltd., 100088, Beijing, China
4.China Railway Tunnel Group (Shanghai) Special High Tech Co., Ltd., 201306, Shanghai, China
5.College of Civil Engineering, Changchun Institute of Electronic Science and Technology, 130114, Changchun, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.03.002
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中图分类号/CLCN:U455.43；TU431
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栏目/Col:研究报告
摘要:
［目的］机械法联络通道施工对地铁正线隧道管片结构内力的影响较大，需要探明正线隧道结构在施工过程中的受力变化规律、受力薄弱点等情况，以保证正线隧道结构安全。［方法］以郑州某地铁盾构区间联络通道机械法顶管施工工程为背景，采用ABAQUS有限元软件建立了数值计算模型，对联络通道顶管施工全过程进行了仿真分析，研究施工过程中正线隧道结构变形及内力变化规律。通过比较仿真值与实测值的变化趋势及发生位置，验证了该数值模型的可靠性。［结果及结论］实测值与仿真值的变化趋势、发生位置基本一致，有限元模型具有准确性。施工过程中，切削环最大变形值呈逐渐增大趋势，始发端切削环弯矩最大值呈先增加后减小趋势，接收端切削环弯矩最大值呈先缓慢减小后增加趋势，切削环轴力最大值呈缓慢增加趋势。施工完成时的最大变形值和内力值均在设计允许范围内。
Abstracts:
［Objective］ The mechanical method construction of connecting passages significantly impacts the internal forces within the segment structures of metro mainline tunnels. It is essential to understand the force variation patterns and weak points in the tunnel structure during the construction process to ensure its safety. ［Method］ Using the mechanical method pipe jacking construction project of the connecting passage in a Zhengzhou Metro shield interval for case study, a numerical calculation model is established using ABAQUS finite element software. A simulation analysis is conducted on the entire process of connecting passage construction to investigate the deformation of the mainline tunnel structure and the change patterns of internal forces. The reliability of the numerical model is validated by comparing the trends and locations of simulated values with those of the actual measured values. ［Result & Conclusion］ The trends and locations of changes in measured and simulated values are generally consistent, confirming the accuracy of the finite element model. During construction, the maximum deformation of the cutting ring exhibits a gradually increasing trend. The maximum bending moment of the cutting ring at the originating end first increases and then decreases, while the maximum bending moment at the receiving end initially decreases slowly before increasing. The maximum axial force of the cutting ring shows a gradual increasing trend. The maximum deformation and internal force values upon completion of the passage construction are within the allowable design limits.
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