隧道开挖对层状地基中邻近管道影响的 DCBEM-FEM 耦合方法

张治国; 黄茂松; 王卫东

隧道开挖对层状地基中邻近管道影响的 DCBEM-FEM 耦合方法 English Version

张治国^1,2,3,
黄茂松^1,3,
王卫东⁴

1. 同济大学地下建筑与工程系，上海 200092 ； 2. 上海大学土木工程系，上海 200072 ； 3. 同济大学岩土及地下工程教育部重点实验室，上海 20009 2 ； 4. 华东建筑设计研究院有限公司，上海 200002

基金项目: 国家杰出青年科学基金项目(50825803)；国家自然科学基金项目(51008188)；教育部高等学校博士点基金项目(20070247066)；中国博士后科研基金项目 (20100470677)

详细信息

作者简介:
张治国 (1978 – ) ，男，河北秦皇岛人，博士后，博士，主要从事城市地下工程施工对周围环境影响评估方面的研究。

中图分类号: TU433
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出版历程
- 发布日期: 2011-10-14

DCBEM-FEM coupling method for response analysis of adjacent pipelines due to tunneling

1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Department of Civil Engineering, Shanghai University, Shanghai 200072, China; 3. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China ; 4. East China Architecture Design Institute, Shanghai 200002, China

摘要

摘要: 目前，在城市地铁隧道施工中常常遇到邻近市政管线的影响。而较多的研究集中在隧道施工引起的周围地层变形上，考虑邻近管线作用的隧道开挖理论分析方法并不多见。为此，针对隧道洞周引入椭圆化非等量径向土体位移控制模式，将邻近管线视为 Euler-Bernoulli 梁，同时将层状地基土体视为弹性层状地基模型，提出了层状地基中隧道开挖引起邻近管道纵向变形的 DCBEM-FEM （位移控制边界元与有限元）耦合分析方法。最后结合现场实测数据和位移控制有限元数值模拟进行分析，验证了本文方法的有效性。研究表明： DCBEM-FEM 耦合方法可以较好的体现隧道开挖所引起的地层损失问题，同时本文方法在考虑邻近管线作用时具有较好的计算精度。研究成果可为合理制定城市地铁隧道施工对邻近管线的保护措施提供一定的理论依据。
- 层状地基 /
- 地铁隧道 /
- 邻近管线 /
- 位移控制方法 /
- DCBEM-FEM 耦合方法
Abstract: The response analysis of subway tunneling on adjacent municipal pipelines is an important problem that geotechnical engineers may need to face when designing new tunnels. However, previous researches usually focus on the ground movements induced by tunneling. Few investigations into the problem of tunneling in layered soils are available considering the effects of adjacent pipelines. The oval-shaped non-uniform convergence deformation controlled model is imposed to the tunnel opening boundary. The adjacent pipelines are regarded as the Euler-Bernoulli beams. The surrounding soils are regarded as the elastic layered soil model. The DCBEM-FEM (Displacement controlled boundary element method -finite element method) coupling method is presented for response analysis of tunneling on adjacent pipelines in layered soils . Finally the accuracy of the proposed method is demonstrated by means of the observed data and the displacement controlled finite element numerical method. The results indicate that the ground loss due to tunneling can be reflected in the DCBEM-FEM coupling method. T he computed accuracy of the proposed method is better compared with other data . It may provide a certain basis to draw up correctly protective measurements for adjacent pipelines influenced by adjacent tunneling.
- layered soils /
- subway tunneling /
- adjacent pipeline /
- displacement controlled method /
- DCBEM-FEM coupling method

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参考文献(16)

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