Based on mechanical behavior of surrounding rock and its failure mechanism, introducing the theory of damage mechanics, this paper establishes a 3D nonlinear elastoplastic damage FEM model under unloading conditions, which is used to study the stability o
Based on mechanical behavior of surrounding rock and its failure mechanism, introducing the theory of damage mechanics, this paper establishes a 3D nonlinear elastoplastic damage FEM model under unloading conditions, which is used to study the stability o
笔者从隧道围岩的力学性能及破坏机理出发，引入损伤力学理论，建立三维非线性脆弹塑性损伤有限元模型，研究在加、卸载条件作用下隧道施工全过程的围岩稳定性，为实际工程提供理论的指导作用。