隧道施工数值模拟及衬砌强度安全系数分析

Numerical Simulation on Tunnel Construction and Security Analysis of the Lining Structure Strength

以某隧道为背景 ,采用二维弹塑性有限元分析方法 ,模拟隧道开挖和支护过程 ,计算衬砌和围岩内力及衬砌的强度安全系数 ,研究衬砌厚度变化对其安全系数和结构稳定性的影响 ,探讨最小衬砌安全厚度 。

By using the 2D?FEM of elastic?plasticity,simulation of tunnel excavation is carried out ,and the internal force and safety coefficient of the lining is calculated to inspect structure security.Then the thesis discusses the effect of thickness changing on lining safety coefficient and structure stability,thus offers guidance and reference for the design and construction of similar highway tunnel.