公路隧道复合支护非线性有限元分析

Nonlinear Finite Element Analysis of Compound Support of Highway Tunnel

引入损伤因子对岩体弹模进行弱化处理,从能量守恒的角度出发探讨了支护受力状态与支护位移、结构刚度以及岩体性质的关系。在此基础上用数值方法进行了模拟,并验证了模拟结果与监测数据的一致性,表明此方法可以有效地指导工程施工。

This paper introduces the damage factor for weakening processing of the elastic modulus of rock, and the relationship between supporting force, displacement, structural stiffness and the nature of rock mass is disscussed from the energy conservation perspective. Based on this theory, simulation by numerical method is done and the consistency of simulation resuits and monitoring data is verified. The results show that this method can effectively guide the construction.