摘要
基于均匀设计法,考虑围岩和衬砌的不确定性,提出了一种高效计算山岭隧道地震易损性的模型。基于该模型,得到了计算岩石山岭隧道结构的易损性计算曲线。根据计算结果得出:(1)均匀设计法能够考虑多种不确定性并为计算生成好的样本参数;(2)根据计算所得的地震结构易损性曲线与经验易损性曲线相对比,得出所提出的计算模型有较好的适用性。当交通隧道穿越地震带时,所提出的地震易损性曲线分析可为隧道线路规划以及设计参考。
By using uniform design method, experiment samples were generated considering rock mass and lining thickness uncertainties for numerical simulations, then seismic vulnerability curves for rock mountain tunnels were developed. After that, verified dynamical finite element analysis was carried out to develop probabilistic seismic de- mand models （PSDMs）. With the help of PSDMs, fragility curves could be established. It is concluded that （1） UDM could generate good samples considering different sources of uncertainties ; （2） Comparison between the pro- posed fragility curves and the empirical curves highlights that the proposed fragility curves is made for specific tunnel in certain conditions, both rock mass and depth wises. The proposed fragility curves could be a reference for tunnel route planning and designing when the tunnel passes through earthquake zone.
作者
刘立荣
王海彦
黄黆
LIU Lirong1, WANG Haiyan1,2, HUANG Guang2(1. Shijiazhuang Institute of Railway Technology, Shijiazhuang 050041, China; 2. Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, Chin)
出处
《世界地震工程》
CSCD
北大核心
2018年第1期173-178,共6页
World Earthquake Engineering
基金
河北省"三三三人才工程"培养经费资助专题(A2017002037)
关键词
易损性分析
岩山隧道
地震需求
均匀设计方法
损伤可能性
fragility analysis
rock mountain tunnel
seismic demand
uniform design method
damage possibility
