3D reliability evaluation of tunnels under strong-motion earthquakes considering spatial randomness
3D reliability evaluation of tunnels under strong-motion earthquakes considering spatial randomness
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考虑空间随机性的强震隧道三维可靠性评估
DOI：
10.1080/15732479.2016.1213753
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发表时间：
2017-07
影响因子：
3.7
通讯作者：
Ang Alfred H S
中科院分区：
文献类型：
--
作者：
Yue Qingxia;Ang Alfred H S
摘要本文通过将隧道周围土体的弹性模量和屈服应力模拟为随机场，研究了隧道系统的随机响应和可靠度。建立了三维隧道-土体有限元模型，采用谱表示法模拟了相应的随机场。选择汶川地震作为垂直于纵轴方向的底部输入。结果表明，土的弹性模量和屈服应力均为随机场时（情况II），隧道各截面内力峰值分布不均匀，环向力和弯矩均大于仅考虑土的弹性模量为随机场时（情况I）。采用概率密度演化法（PDEM）对隧道的随机响应进行了分析，结果表明，隧道响应的概率密度函数为双峰或双峰以上的复杂函数。本文对方案Ⅰ和方案Ⅱ的设计极限和极限状态分别进行了可靠度评定，结果表明方案Ⅱ的可靠度低于方案Ⅰ。
Abstract This paper studied the stochastic response and reliability of the tunnel system through modelling the elastic modulus and yield stress of the surrounding soil as a random field. A 3D tunnel-soil finite element model was established and the corresponding random field was simulated by the spectral representation method. The Wenchuan earthquake was chosen as input from the bottom in the perpendicular direction to the longitudinal axis. Results show that the peak values of the internal forces of the cross sections of the tunnel are not uniformly distributed and the hoop forces and bending moments are higher under the condition that the elastic modulus and yield stress of soil are both random fields (Case II) than only the elastic modulus of the soil is considered as random field (Case I). Using PDEM (probability density evolution method), the stochastic response of the tunnel indicates that the probability density function of the response is complex with two or more peaks. The design limit and ultimate limit states of Cases I and II are evaluated in this paper in terms of the respective reliabilities, which indicated that the reliability under Case II is lower than that of Case I.
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影响因子：
14.3
作者：
M. Shinozuka;G. Deodatis
通讯作者：
M. Shinozuka;G. Deodatis
DOI：
10.1061/(asce)1090-0241(2004)130:5(507
发表时间：
2004-05-01
影响因子：
3.9
作者：
Griffiths, DV;Fenton, GA
通讯作者：
Fenton, GA
汶川地震后山岭隧道及岩土损坏调查与评估
DOI：
10.1007/s11431-009-0054-z
发表时间：
2009-02-01
期刊：
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES
影响因子：
--
作者：
Wang ZhengZheng;Gao Bo;Yuan Song
通讯作者：
Yuan Song
影响因子：
6.9
作者：
Wang, WL;Wang, TT;Huang, TH
通讯作者：
Huang, TH
DOI：
--
发表时间：
2004
期刊：
Chinese Quarterly of Mechanics
影响因子：
--
作者：
Li Jie
通讯作者：
Li Jie