【摘要】 运用ABAQUS有限元分析软件建立穿越活动断裂带隧道模型,根据具体隧道相关地质资料,分析断层不同错动位移对隧道结构受力影响,围岩对隧道压力分布情况以及隧道塑性应变发展规律。以期对公路隧道设计施工提供参考。结果表明:隧道受力变形较大区域主要在断层带及附近的隧道节段内,隧道拱腰和拱脚处受围岩压力影响显著,活动断层错动对于隧道上盘节段的影响远远大于下盘、二衬应力集中出现在拱脚处,塑性应变在拱腰处达到最大。更多还原

【Abstract】 Using finite element analysis software ABAQUS,we establish a model of cross-fault tunnel based on a certain tunnel case to analyze the changes of internal forces and the development of plastic strain of the tunnel under different displacement of the fault. We hope that this article can provide reference for highway tunnel design and construction. The results show that the largest deformation area of the tunnel remains in the fault zone and the tunnel section nearby. Rock pressure has a significant effect on the waist and foot arches of the tunnel. Fault movement affects hanging wall more severely than on foot wall. The plastic strain reaches the maximum at the waist arch of the tunnel.更多还原