厦门海底隧道的流固耦合分析

李廷春; 李术才; 陈卫忠; 邱祥波

厦门海底隧道的流固耦合分析 English Version

中国科学院武汉岩土力学研究所岩土力学重点实验室；中国科学院武汉岩土力学研究所岩土力学重点实验室湖北武汉430071；山东科技大学土木建筑学院；山东泰安271019；湖北武汉430071；

基金项目: 国家自然科学基金资助项目 (50 3790 52 ;50 0 0 4 0 0 7)

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出版历程
- 发布日期: 2004-05-27

Coupled fluid-mechanical analysis of Xiamen subsea tunnel

1.Key Laboratory of Rock and Soil Mechanics Institute of Rock and Soil Mechanics Chinese Academy of Sciences Wuhan 430071 China 2.College of Civil Engineering and Architecture Shandong University of Science and Technology Tai’an 271019 China

摘要

摘要: 为了验证厦门海底隧道最小顶板厚度比设计厚度减小时隧道的稳定性。在厦门海底隧道轴线的地质剖面图上 ,选取了 4个典型剖面 ,根据设计方案 ,将隧道轴线高程比原设计升高 4m ,依据流固耦合理论 ,应用三维快速拉格朗日法进行数值分析。从隧道轴线升高 4m时 ,开挖后的应力分布、洞周位移、塑性区、孔隙水压力分布等结果 ,可以得出将设计方案的轴线位置升高后 ,隧道是稳定的。同时 ,得到一些对后续施工和其他工程有一定的指导意义的有益结论。
- 厦门海底隧道 /
- 流固耦合理论 /
- 快速拉格朗日法 /
- 稳定性
Abstract: In order to verify the stability and rock cover of Xiamen subsea tunnel which is under design now. According to coupled fluid-mechanical theorem, FLAC^3D （Fast Lagrangian Analysis of Continua in 3 Dimensions） numerical analysis for 4 profiles has been done along the longitudinal of the tunnel. Based on original design of the tunnel, rock covers with a decrease of 4 m is considered in the numerical simulations. From the numerical results of stress distribution, displacements,plastic zones of rock mass and pore-pressure distributions after excavation with rock cover decreasing 4 m,it can be concluded that the tunnel is stable even the rock cover of the subsea tunnel decreases 4 m compared to the original design elevation. Some conclusions are obtained which are useful for the future construction and other rock engineering.
- Xiamen subsea tunnel /
- coupled fluid-mechanics theorem /
- FLAC^3D /
- stability