| 钢框架基于复模态随机反应分析的抗震可靠度研究 |
| |
| 引用本文： | 杨伟军,张振浩,禹慧.钢框架基于复模态随机反应分析的抗震可靠度研究[J].世界地震工程,2011,27(1). |
| |
| 作者姓名： | 杨伟军 张振浩 禹慧 |
| |
| 作者单位： | 1. 长沙理工大学,土木与建筑学院,湖南,长沙,410076
2. 同济大学,土木工程学院,上海,200092 |
| |
| 基金项目： | 湖南省高校科技创新平台开放基金项目(09K068); 长沙理工大学桥梁工程重点实验室开放基金项目(09KA02) |
| |
| 摘 要： | 首次将复模态法应用于钢框架结构的随机地震反应分析中,通过算例对钢框架结构在平稳地震激励下的抗震可靠度进行了计算分析。同时,提出了钢框架在非平稳地震激励下的反应统计量的求解方法。研究表明,钢框架结构在非平稳地震激励下的随机反应分析,可以利用扩阶的方法来进行,将求解结构非平稳随机响应转化为求解扩阶系统在均匀调制白噪声激励下的响应。采用复模态分析法可较方便地求解出结构在非平稳地震激励下弹性随机反应的协方差函数及均方差的解析表达式。
|
| 关 键 词： | 钢框架 复模态 随机反应 平稳激励 非平稳激励 抗震可靠度 |
The research of seismic reliability of a steel frame based on complex modal method for analysis of random response |
| |
| YANG Weijun,ZHANG Zhenhao,YU Hui.The research of seismic reliability of a steel frame based on complex modal method for analysis of random response[J].World Information On Earthquake Engineering,2011,27(1). |
| |
| Authors: | YANG Weijun ZHANG Zhenhao YU Hui |
| |
| Institution: | YANG Weijun1,ZHANG Zhenhao1,YU Hui2 (1.School of Givi Engineering and Architecture,Changsha University of Science and Technology,Changsha 410076,China,2.School of Civil Engineering,Tongji University,Shanghai 200092,China) |
| |
| Abstract: | Complex modal method is introduced into analysis of stochastic seismic response of a steel frame for the first time.Through a calculating example,the seismic reliability of a steel frame structure under stationary seismic excitation is analysed.At the same time,the solution method which can obtain response statistics of the steel frame under non-stationary seismic excitation is proposed.It is shown that the stochastic response analysis of structures under non-stationary seismic excitation can be done by the... |
| |
| Keywords: | steel frame complex modal stochastic response stationary excitation non-stationary seismic excitation seismic reliability |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
