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论文类型： 会议论文

发表时间： 2016-01-01

收录刊物： CPCI-S

卷号： 99

页面范围： 205-210

关键字： Tunnel; Reliability analysis; Response surface method; Sensitivity

摘要： The variation of rock mass mechanical parameters has a significant impact on the dynamic response of tunnel lining. Regarding the deformation modulus, Poisson's ratio, cohesion and frictional angle of rock mass as basic random variables, the effect of these parameters on the reliability index of tunnel ling was researched using finite element method. Response Surface Methodology was utilized to estimate the functional relationship between the load effects on tunnel lining and mechanical parameters based on numerical results. The results show that the reliability indices decrease with the means and variation coefficient of basic random variables increasing, and the mechanical parameters of rock mass have different sensitivities on the reliability index of tunnel lining in different situations.