| 盾构隧道推进对邻近地下管线影响的物理模型试验研究 |
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| 引用本文： | 朱叶艇,张 桓,张子新,黄 昕,刘 宽.盾构隧道推进对邻近地下管线影响的物理模型试验研究[J].岩土力学,2016,37(Z2):151-160. |
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| 作者姓名： | 朱叶艇 张 桓 张子新 黄 昕 刘 宽 |
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| 作者单位： | 1. 同济大学 岩土及地下工程教育部重点实验室，上海 200092；2. 同济大学 地下建筑与工程系，上海 200092；
3. 上海隧道工程有限公司，上海 200032 |
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| 基金项目： | 国家自然科学基金（No.41372276）；同济大学青年优秀人才培养行动计划项目（No.2015KJ008）；珠海大横琴股份有限公司资助项目（No.2015-sk-4）。 |
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| 摘 要： | 以上海地铁11号线某区间盾构工程为背景，采用相似物理模型试验研究盾构隧道开挖对上方垂直于隧道轴线的地下管线的影响，并将试验结果与数值解对比。采用量纲分析法推导出文中模型试验的相似准则，并基于该相似准则设计出盾构机和隧道模型，分别通过管线刚度试验和模糊数学综合评判方法选定模型管线和配制相似土材料。研究结果表明，自主开发的半自动盾构掘进装置能较好地模拟盾构的开挖过程，较人工开挖扰动更小；下方盾构隧道开挖使管线产生的竖向变形关于隧道轴线呈对称分布，其形态符合高斯曲线的特征，最大竖向变形位于隧道轴线正上方处，竖向变形反弯点出现在与隧道轴线水平距离约一倍隧道直径的位置处；隧道开挖对管线的影响范围随管隧间距的增加而减小，管线竖向变形曲线的反弯点位置随管隧垂直间距的增大而有所内移；管线刚度对管线竖向变形的影响相对较小。
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| 关 键 词： | 盾构隧道 地下管线 模型试验 |
| 收稿时间： | 2016-04-22 |
Physical model test study of influence of advance of shield tunnel on adjacent underground pipelines |
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| ZHU Ye-ting,ZHANG Huan,ZHANG Zi-xin,HUANG Xin,LIU Kuan.Physical model test study of influence of advance of shield tunnel on adjacent underground pipelines[J].Rock and Soil Mechanics,2016,37(Z2):151-160. |
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| Authors: | ZHU Ye-ting ZHANG Huan ZHANG Zi-xin HUANG Xin LIU Kuan |
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| Institution: | 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;
2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;
3. Shanghai Tunnel Engineering Co., Ltd., Shanghai 200032, China |
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| Abstract: | A series of physical model tests is performed to investigate the influence of shield tunneling on adjacent underground pipelines based on a particular section of Shanghai Metro Line 11. The scaling law of the model tests is firstly derived using the dimensional analysis method; based on which the shield machine and the tunnel models are designed. Then stiffness tests are carried out to determine the model pipelines that meet the scaling criterion. The fuzzy judgment approach is used to determine the ingredient of model material. The testing results are then compared with some theoretical solutions. It is shown that the self-developed shield tunneling apparatus can effectively simulate the excavation process with a smaller disturbance to the ground in comparison to manual excavation. The vertical deformation of pipelines caused by shield tunneling presents a symmetrical distribution about the tunnel axis which can be approximated by Gaussian curves. The maximum pipeline deformation is located directly above the tunnel axis, and the inflection point is located about twice the tunnel diameter horizontally away from the tunnel axis. The influence of tunneling process on pipelines decreases and the inflection point moves inwards with the increasing distance between the tunnels and pipelines. It is also shown that the effect of the pipeline stiffness on vertical deformation is relatively small. |
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| Keywords: | shield tunnel underground pipelines model test |
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