有限元在水下隧道最小安全顶板厚度中的应用  

Application of FEM to Comparison of Least Security Coping Thickness for Underwater Tunnel

作　　者：张小玉[1] 李术才[2] 邱祥波[2] 

机构地区：[1]武汉理工大学理学院,武汉430070 [2]中国科学院武汉岩土力学研究所,武汉430071

出　　处：《武汉理工大学学报》2004年第10期24-27,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金 (5 0 0 0 4 0 0 7);国家自然科学基金 (5 9939190)

摘　　要：地下工程围岩稳定分析计算中断层材料参数与岩体材料参数相比 ,差异很大从而导致计算不容易收敛等特点提出了相应的非线性有限元方程组的求解策略。模拟了某拟建中水下公路隧道 ,在不同隧道顶板厚度时的围岩应力、位移、塑性区的分布及大小。通过比较得出最合理的最小安全顶板厚度 。The material parameters of fault are very different with the rocks, which lead to the difficulty in calculation convergence. Aimed at the characteristic of wall rock stability analysis of underground project, some solutions to the nonlinear FEM equations are put forward. Dispersion ranges of stress, displacement and plastic region of different coping thickness of wall rock of an underwater highway tunnel are simulated. Through the comparisons, the reasonable least security coping thickness is obtained. This study is very important for similar engineering.

关 键 词：最小安全顶板厚度 围岩稳定 有限元 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]