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山东大学学报 (工学版) ›› 2021, Vol. 51 ›› Issue (1): 46-52.doi: 10.6040/j.issn.1672-3961.0.2020.340

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基坑开挖邻近隧道水平形变位移规律

李连祥1,2,张强1,2,石锦江3,刘嘉典1,2,侯颖雪1,2   

  1. 1. 山东大学基坑与深基础工程技术研究中心, 山东 济南 250061;2. 山东大学土建与水利学院, 山东 济南 250061;3. 济南轨道交通集团有限公司, 山东 济南 250014
  • 出版日期:2021-02-20 发布日期:2021-03-01
  • 作者简介:李连祥(1966— ),男,河北唐山人,教授,博士,主要研究方向为深基坑工程理论与技术. E-mail:jk_doctor@163.com
  • 基金资助:
    国家自然科学基金资助项目(51508310);山东省自然科学基金计划资助项目(ZR2018QEE008);济南市科技计划资助项目(201201145)

Law of horizontal deformation displacement of tunnels due to adjacent excavation

LI Lianxiang1,2, ZHANG Qiang1,2, SHI Jinjiang3, LIU Jiadian1,2, HOU Yingxue1,2   

  1. 1. Foundation Pit and Deep Foundation Engineering Research Center, Shandong University, Jinan 250061, Shandong, China;
    2. School of Civil Engineering, Shandong University, Jinan 250061, Shandong, China;
    3. Jinan Rail Transit Group Co., Ltd., Jinan 250014, Shandong, China
  • Online:2021-02-20 Published:2021-03-01

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摘要： 基于水平基床系数的变化提出“水平形变位移”这一概念,将隧道拱腰水平位移可分为三部分,利用PLAXIS 3D有限元软件进行分析,并拟合得到最大水平形变位移与基坑宽度、水平距离的关系公式。研究结果表明,水平形变位移随隧道与基坑水平距离的增加呈指数关系降低;当水平距离大于一倍基坑深度时不考虑基坑宽度的影响。本研究所推导的水平形变位移计算公式可用于计算临近基坑开挖的隧道水平收敛值、隧道拱腰的水平位移、隧道附近的水平基床系数。

关键词: 基坑, 隧道, 形变位移, 基床系数, 拱腰, 收敛

Abstract: The horizontal displacement of the tunnel hance was divided into three parts. Based on the change of horizontal coefficients of subgrade reaction, the paper proposed the concept of “horizontal deformation displacement”, which was analyzed by the PLAXIS 3D. And the correlation formula between the maximum horizontal deformation displacement and the foundation pit width and the horizontal distance was obtained by fitting. The results showed that the horizontal deformation displacement decreased exponentially with the increase of the horizontal distance between the tunnel and the foundation pit, and the influence of the foundation pit width was ignored when the value of the horizontal distance was greater than the depth of the foundation pit. The formula derived in this paper could be used to calculate the horizontal convergence value of the tunnel adjacent to the excavation, the horizontal displacement of the tunnel hance, and the horizontal coefficients of subgrade reaction near the tunnel.

Key words: foundation pit, tunnel, deformation displacement, coefficients of subgrade reaction, hance, convergence

中图分类号: 

  • U45
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