| 多分量多点平稳随机地震响应的快速算法 |
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| 引用本文： | 赵灿晖,周志祥.多分量多点平稳随机地震响应的快速算法[J].西南交通大学学报,2007,42(1):55-60. |
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| 作者姓名： | 赵灿晖 周志祥 |
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| 作者单位： | 1. 西南交通大学土木工程学院,四川,成都,610031;重庆交通学院土建学院,重庆,400074
2. 重庆交通学院土建学院,重庆,400074 |
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| 基金项目： | 国家自然科学基金资助项目（50578168） |
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| 摘 要： | 为了解决多分量多点激励作用下大跨度桥梁平稳随机响应的计算问题,在单分量虚拟激励法的基础上,提出了多分量多点地震激励下计算大跨度桥梁平稳随机响应的虚拟激励法.理论证明,该法具有与经典随机振动理论精确解相同的精度,而计算速度比经典随机振动理论快10倍,且可方便地计入行波效应或部分相干效应.
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| 关 键 词： | 地震响应 随机振动 多分量激励 多点激励 |
| 文章编号： | 0258-2724（2007）01-0055-06 |
| 修稿时间： | 2006-02-27 |
Fast Algorithm for Stationary Stochastic Response Subjected to Multi-component Multi-support Seismic Excitation |
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| ZHAO Canhui,ZHOU Zhixiang.Fast Algorithm for Stationary Stochastic Response Subjected to Multi-component Multi-support Seismic Excitation[J].Journal of Southwest Jiaotong University,2007,42(1):55-60. |
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| Authors: | ZHAO Canhui ZHOU Zhixiang |
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| Institution: | 1. School of Civil Eng. , Southwest Jiaotong University, Chengdu 610031, China; 2. School of Civil Eng. , Chongqing Institute of Communication, Chongqing 400074, China |
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| Abstract: | To calculate the stationary stochastic response of a long-span bridge subjected to multicomponent and multi-support seismic excitation, a pseudo-excitation method was proposed based on the single-component pseudo-excitation method. Theoretic analyses show that this pseudo-excitation method has the same accuracy as the classic stochastic vibration method, but calculation rate of the former is 10 times faster than that of the latter, and the traveling wave effect and partial correlation effect can be included easily. |
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| Keywords: | seismic response stochastic vibration multi-component excitation multi-support excitation |
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