隧道二次衬砌可靠性的仿真模拟分析

Simulation and Analysis on Reliability of Tunnel Double-lining

由于隧道的开挖施工,使得围岩受到扰动。为了确保隧道结构体的安全性,因此需要施工衬砌,亦即衬砌,亦即一定厚度的混凝土。然而衬砌的参数往往都是通过工程类比法来确定的,很难根据具体的工程条件得出相应的合理衬砌参数,这就使得衬砌的可靠性缺乏理论依据。借助弹塑性理论,将衬砌简化成厚壁圆筒,进行可靠性试算分析;同时结合数值方法对衬砌进行仿真模拟分析,最终确定合理的衬砌参数。

As the tunnel excavation,making rock disturbed,in order to ensure the safety of the tunnel structure,so the lining is required,that a certain thickness of concrete,but the parameters of the lining are often determined through the engineering analogy,and it is difficult to obtain appropriate and reasonable lining parameters on the basis of the specific conditions of engineering project,which makes the reliability of the lining lack of theoretical basis. With the help of elastic plastic theory,liner is simplified thick-walled cylinder for spreadsheet analysis of the reliability,and combining with numerical methods for simulation of lining,and the final reasonable lining parameters are determined.