| 大跨度桥梁地震响应分析中的非一致地震激励模型 |
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| 引用本文： | 赵灿晖.大跨度桥梁地震响应分析中的非一致地震激励模型[J].西南交通大学学报,2002,37(3):236-240. |
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| 作者姓名： | 赵灿晖 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 摘 要： | 基于二维相干函数建立了考虑二维相关影响的非一致激励功率谱模型，在此基础上采用随机过程理论推导了幅值、相位角与功率谱的关系，建立了非一致激励时程样本的数值模拟方法，由该法可生成地震响应时程分析所需的加速度时程样本。
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| 关 键 词： | 大跨度桥梁 地震响应分析 非一致地震激励模型 功率谱模型 相干函数模型 时程样本 幅值 相位角 |
| 文章编号： | 0258-2724(2002)03-0236-05 |
The Asynchronous Excitation Model for the Seismic Response Analysis of Long-Span Bridges |
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| ZHAO Can,hui.The Asynchronous Excitation Model for the Seismic Response Analysis of Long-Span Bridges[J].Journal of Southwest Jiaotong University,2002,37(3):236-240. |
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| Authors: | ZHAO Can hui |
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| Abstract: | Based on the two dimensional coherency function, a asynchronous excitation power spectral density (PSD) model is established, in which the effect of two dimensional coherency is considered. The relationship between amplitude, phase angels and PSD is obtained using stochastic process. The numerical simulation method for the history of ground motions is proposed. With the proposed method, an acceleration history sample can be generated and used in the seismic response analysis of long span bridges. |
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| Keywords: | bridges seismic response analysis asynchronous excitation model |
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