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| 泥水盾构下穿已有隧道施工过程数值模拟研究 | |
| 引用本文： | 宁寅,冯伟,马永其,朱斌.泥水盾构下穿已有隧道施工过程数值模拟研究[J].现代隧道技术,2011,48(5):63-69. |
| 作者姓名： | 宁寅 冯伟 马永其 朱斌 |
| 作者单位： | 1. 上海市应用数学和力学研究所,上海,200072 2. 上海市应用数学和力学研究所,上海200072;上海大学力学系,上海200444 3. 上海隧道工程股份有限公司盾构工程分公司,上海,200023 |
| 摘 要： | 针对2010年上海世博会重大配套工程——打浦路隧道复线工程,进行了数值模拟研究。根据工程实际,土体采用Drucker-Prager弹塑性本构关系,建立了沿弯曲路径下穿几何特性复杂的已有隧道的三维非线性数值模型,通过施加开挖面泥水压力模拟了泥水盾构施工过程,采用Newton-Raphson方法进行非线性求解。比较了轴线地表沉降数值模拟计算结果与工程实测数据,表明模拟模型可靠、可信;分析了泥水盾构施工对周围土体及已有隧道的影响,得到了已有隧道的位移和应力的变化规律,可为实际工程提供参考。 |
| 关 键 词： | 泥水盾构 下穿施工 数值模拟 非线性有限元 |
Numerical Simulation of the Construction Process of a Slurry Balance Shield Traversing Under an Existing Tunnel |
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| Ning Yin,Feng Wei,Ma Yongqi,Zhu Bin.Numerical Simulation of the Construction Process of a Slurry Balance Shield Traversing Under an Existing Tunnel[J].Modern Tunnelling Technology,2011,48(5):63-69. | |
| Authors: | Ning Yin Feng Wei Ma Yongqi Zhu Bin |
| Institution: | Ning Yin1 Feng Wei1 Ma Yongqi1,2 Zhu Bin3(1 Shanghai Institute of Applied Mathematics and Mechanics,Shanghai 200072,2 Department of Mechanics,Shanghai University,Shanghai 200444,3 Shanghai Tunnel Engineering Construction Co.Ltd,Shanghai 200023) |
| Abstract: | The Dapu Road double-track tunnel is an important auxiliary project of the Shanghai Expo 2010;a numerical simulation of this project using a 3D nonlinear finite element method is studied in this paper.The model of a slurry balance shield along a curved path traversing under an existing tunnel with complex geometric features was built and the construction process of a slurry shield was simulated by using Drucker-Prager elastoplastic constitutive and applying a slurry pressure.The model was solved by using th... |
| Keywords: | Slurry balance shield Traversing under existing tunnel Numerical simulation Nonlinear finite element method |
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