| 结构地震可靠度的数值-模拟方法 |
| |
| 引用本文： | 严再春,何军.结构地震可靠度的数值-模拟方法[J].河北工程大学学报,2008,25(4):25-28. |
| |
| 作者姓名： | 严再春 何军 |
| |
| 作者单位： | 上海交通大学,船舶海洋与建筑工程学院,土木工程系,上海,200240;上海交通大学,船舶海洋与建筑工程学院,土木工程系,上海,200240 |
| |
| 摘 要： | 本文发展了一种数值-模拟方法,计算谱密度不确定非平稳地震荷载下的结构地震可靠度。在该方法中,首先由高斯积分给出了无条件结构地震可靠度的加权和计算公式,然后利用Monte Carlo模拟方法计算高斯点处的条件结构地震可靠度,最后得到无条件结构地震可靠度。文中计算了一个单自由度结构的地震可靠度,并与直接模拟结果进行了对比分析,分析表明,数值-模拟方法具有良好的精度和效率。
|
| 关 键 词： | 地震可靠度 非平稳地震荷载 首次穿越概率 数值积分 Monte Carlo模拟 |
| 收稿时间： | 9/2/2008 12:00:00 AM |
Numerical-simulation method for structural seismic reliability |
| |
| Authors: | YAN Zai-chun and HE Jun |
| |
| Affiliation: | Department of Civil Engineering,School of Naval Architecture,Ocean and CivilEngineering,Shanghai Jiao Tong University,Shanghai,200240,China;Department of Civil Engineering,School of Naval Architecture,Ocean and CivilEngineering,Shanghai Jiao Tong University,Shanghai,200240,China |
| |
| Abstract: | A numerical-simulation method is developed to calculate seismic reliabilities of structures subjected to non-stationary earthquake load with uncertain spectral density in this paper.First,the numerical solutions of the structural unconditional seismic reliability are given from Gauss's integration.Secondly,conditional seismic reliabilities in the numerical solutions at Gauss points are estimated by Monte Carlo simulations.Finally,the unconditional structural seismic reliabilities are calculated by combining the numerical solution and the obtained conditional reliabilities.Numerical results of a single-degree-of-freedom(SDOF) system are compared with that from the plain Monte Carlo simulation, which demonstrates the accuracy and efficiency of the numerical-simulation method. |
| |
| Keywords: | seismic reliability non-stationary earthquake load first-passage probability numerical integration monte carlo simulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《河北工程大学学报》浏览原始摘要信息 |
|
点击此处可从《河北工程大学学报》下载全文 |
|
