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基坑上跨开挖诱发既有盾构隧道隆起变形研究

王理想 梁荣柱 李忠超 康成 肖铭钊 吴文兵 高坤 郭杨

王理想, 梁荣柱, 李忠超, 康成, 肖铭钊, 吴文兵, 高坤, 郭杨. 基坑上跨开挖诱发既有盾构隧道隆起变形研究[J]. 工程力学, 2022, 39(12): 130-140. doi: 10.6052/j.issn.1000-4750.2021.07.0547
引用本文: 王理想, 梁荣柱, 李忠超, 康成, 肖铭钊, 吴文兵, 高坤, 郭杨. 基坑上跨开挖诱发既有盾构隧道隆起变形研究[J]. 工程力学, 2022, 39(12): 130-140. doi: 10.6052/j.issn.1000-4750.2021.07.0547
WANG Li-xiang, LIANG Rong-zhu, LI Zhong-chao, KANG Cheng, XIAO Ming-zhao, WU Wen-bing, GAO Kun, GUO Yang. HEAVE DEFORMATION OF EXISTING SHIELD TUNNEL INDUCED BY OVER-CROSSING EXCAVATION[J]. Engineering Mechanics, 2022, 39(12): 130-140. doi: 10.6052/j.issn.1000-4750.2021.07.0547
Citation: WANG Li-xiang, LIANG Rong-zhu, LI Zhong-chao, KANG Cheng, XIAO Ming-zhao, WU Wen-bing, GAO Kun, GUO Yang. HEAVE DEFORMATION OF EXISTING SHIELD TUNNEL INDUCED BY OVER-CROSSING EXCAVATION[J]. Engineering Mechanics, 2022, 39(12): 130-140. doi: 10.6052/j.issn.1000-4750.2021.07.0547

基坑上跨开挖诱发既有盾构隧道隆起变形研究

doi: 10.6052/j.issn.1000-4750.2021.07.0547
基金项目: 国家自然科学基金项目(41807262);中国博士后基金面上项目(2019M653308);安徽建工集团2021年度科研立项项目(2021-52ZC);武汉市政集团科研项目(wszky202013);安徽省住房城乡建设科技计划项目(2020-YF44)
详细信息
    作者简介:

    王理想(1998−),男,安徽宿州人,硕士生,主要从事盾构隧道施工及保护研究(E-mail: wlx_st@163.com)

    李忠超(1987−),男,湖北荆州人,高工,博士,主要从事盾构隧道工程对周围环境影响的研究(E-mail: 10912014@zju.edu.cn)

    康 成(1994−),男,河北石家庄人,博士生,主要从事盾构隧道施工及保护研究(E-mail: kangcheng@cug.edu.cn)

    肖铭钊(1970−),男,湖北武汉人,教授级高工,学士,主要从事市政与隧道工程方面的研究(E-mail: wss.jz805@163.com)

    吴文兵(1988−),男,江西上饶人,教授,博士,主要从事桩基动力学与桩基沉降计算理论的研究(E-mail: zjuwwb1126@163.com)

    高 坤(1979−),男,安徽宿州人,高工,硕士,主要从事工程检测相关研究(E-mail: 727992377@qq.com)

    郭 杨(1970−),男,安徽合肥人,教授级高工,学士,主要从事地下工程方面的研究(E-mail: ahjkdj@126.com)

    通讯作者:

    梁荣柱(1988−),男,广东阳江人,副研究员,工学博士,从事邻近施工对既有隧道影响分析方面的研究(E-mail: liangcug@163.com)

  • 中图分类号: U231+.3

HEAVE DEFORMATION OF EXISTING SHIELD TUNNEL INDUCED BY OVER-CROSSING EXCAVATION

  • 摘要: 基坑上跨开挖将会引起既有盾构隧道隆起变形,危及既有盾构隧道的服役性能。目前基坑开挖引起的盾构隧道隆起变形的解析方法,通常将盾构隧道简化为埋置于弹性地基上的连续长梁,忽略了环间接头影响。针对前人研究的不足,提出带环间接头的盾构隧道计算模型,通过非线性Pasternak地基模型来考虑地基土变形的非线性特征,通过两阶段分析法,推导得到基坑上跨开挖作用下盾构隧道隆起位移和张开量简化解答。通过MINDLIN解计算基坑开挖引起的作用于盾构隧道上的附加荷载;建立基坑卸载下盾构隧道的隆起变形微分方程。利用有限差分法求解出基坑开挖引起的邻近盾构隧道隆起变形和内力分布。收集了三个工程实测数据,并将所提方法和实测数据、既有理论方法进行对比,验证所提方法的适用性。
  • 图  1  上跨基坑开挖对既有盾构隧道影响示意图

    Figure  1.  Impacts of over-crossing excavation on existing shield tunnel

    图  2  基坑上跨施工下基坑-盾构隧道相互作用计算模型

    Figure  2.  Excavation-shield tunnel interaction calculation model due to over-crossing excavation

    图  3  基坑与既有隧道相对位置平面示意图

    Figure  3.  Plane diagram of relative position between excavation and existing tunnel

    图  4  带环间接头盾构隧道简化示意图

    Figure  4.  Schematic diagram of calculation model of joint discontinuous shield tunnel

    图  5  盾构隧道有限差分离散示意图

    Figure  5.  Discretization of shield tunnel for finite difference

    图  6  隧道环间接头增设虚拟节点示意图

    Figure  6.  Schematic diagram of adding virtual node in tunnel ring joint

    图  7  张开量计算示意图

    Figure  7.  Schematic diagram of opening calculation

    图  8  杭州地铁一号线计算结果与实测数据对比

    Figure  8.  Comparison of calculation results and measured data of Hangzhou Metro Line 1

    图  9  杭州地铁一号线弯矩值

    Figure  9.  Bending moment value of Hangzhou Metro Line 1

    图  10  杭州地铁一号线环间接头张开量计算值

    Figure  10.  Calculation value of joint opening between rings of Hangzhou Metro Line 1

    图  11  上海地铁1号线隆起值计算结果与实测数据对比

    Figure  11.  Comparison between calculated and measured uplift values of Shanghai Metro Line 1

    图  12  上海地铁1号线弯矩值

    Figure  12.  Bending moment value of Shanghai Metro Line 1

    图  13  上海地铁1号线环间接头张开量计算值

    Figure  13.  Calculation value of joint opening between rings of Shanghai Metro Line 1

    图  14  上海地铁2号线计算结果与实测数据对比

    Figure  14.  Comparison of calculation results and measured data of Shanghai Metro Line 2

    图  15  上海地铁2号线环间接头张开量计算值

    Figure  15.  Calculation value of joint opening between rings of Shanghai Metro Line 2

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出版历程
  • 收稿日期:  2021-07-17
  • 录用日期:  2021-11-02
  • 修回日期:  2021-10-20
  • 网络出版日期:  2021-11-02
  • 刊出日期:  2022-12-25

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