随机结构地震激励下的可靠度Gausslegendre积分法
![zoޛ)j馕ZfrGj, Wzwkxf^ݭj, Wzwkxf^ݭ57]Sv]4vm5M]ti 5^ry](http://img.qikan.com.cn/qkimages/zdgc/zdgc201502/zdgc20150206-5-l.jpg)
m4idhۖ筄C{^ئj~鮆n)b)Ǟv)ಇZ*'jP iצʇr'q5{]7]^?w3m4i.)ɉZZ菱띡\֭zhvjwhXbsz(zz6N?xE$+sDY^^-biܮrwݢihi q
+kn5==?yF nzDO
))zb^)鮆n)b'$
i'1azfƥ2^X_|םiצ"http://www.jnbd5.com/k/fanwen/" target="_blank" class="keylink">范文亮，李正良，王承启.多变量函数统计矩点估计法的性能比较[J].工程力学，2012，29（11）：1—11.
Fan Wenliang， Li Zhengliang，Wang Chengqi. Comparison of point estimate methods for probability moments of multivariate fuction[J]. Engineering Mechanics， 2012，29（11）：1—11.
[17]Christian J T， Baecher G B. Pointestimate method as numerical quadrature[J]. Journal of Geotechnical and Geoenvironmental Engineering， 1999，125（9）：779—786.
[18]Tsai C W， Franceschini S. Evaluation of probabilistic point estimate methods in uncertainty analysis for environmental engineering applications[J]. Journal of Environmental Engineering， 2005，131（3）：387—395.
[19]张治勇，孙柏涛，宋天舒.新抗震规范地震动功率谱模型参数的研究[J].世界地震工程，2000，16（3）：33—38.
Abstract： In this paper， Gausslegendre integral formulation and Gausslegendre integral points estimation method are proposed to solve the reliability of stochastic structure under seismic excitation， based on the firstpassage method modified by Vanmarcke. Numerical simulation shows that Gausslegendre integral method is only suitable for system whose dimension is less than 4， offering great precision and higher computational efficiency. By contrast， Gausslegendre integral points estimate method possesses excellent precision and much higher computational efficiency. Both the mean and variation coefficient of structural reliability solved by those two methods are converged with increase in variability coefficient of structure parameters.
Key words： stochastic structure； seismic excitation； firstpassage failure； Gausslegendre integral； reliability
上一篇：浅析高中物理平衡状态
下一篇：用力学,更要用心“玩”设计