| 地下结构抗震动力可靠度分析 |
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| 引用本文： | 严松宏,高峰,高波. 地下结构抗震动力可靠度分析[J]. 铁道学报, 2004, 26(5): 96-100 |
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| 作者姓名： | 严松宏 高峰 高波 |
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| 作者单位： | 1. 兰州交通大学,土木工程学院,甘肃,兰州,730070
2. 西南交通大学,土木工程学院,四川,成都,610031 |
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| 基金项目： | 甘肃省自然科学基金项目(ZS021-A25-020-G);兰州交通大学"青蓝"人才工程基金资助计划资助 |
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| 摘 要： | 由于地震的随机性,开展地下结构随机地震响应及其抗震可靠度分析具有重要的实际意义。本文从有限元动力分析的基本原理出发,利用脉冲响应函数和傅立叶变换原理,研究了将地震荷载作为平稳随机过程时地下结构随机地震响应分析方法,导出了平稳随机地震作用下地下结构动力响应的数字特征计算表达式。分析了地下结构在某烈度地震作用下和设计基准期内的抗震可靠度。
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| 关 键 词： | 地下结构 随机地震响应 脉冲函数 傅立叶变换 抗震可靠度 |
| 文章编号： | 1001-8360(2004)05-0096-05 |
Analysis of Dynamic Aseismic Reliability of Underground Structures |
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| YAN Song-hong,GAO Feng,GAO Bo. Analysis of Dynamic Aseismic Reliability of Underground Structures[J]. Journal of the China railway Society, 2004, 26(5): 96-100 |
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| Authors: | YAN Song-hong GAO Feng GAO Bo |
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| Affiliation: | YAN Song-hong~1,GAO Feng~1,GAO Bo~2 |
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| Abstract: | Because of the randomization of earthquake motion, the analysis of the stochastic seismic responses and aseismic reliabilities of the underground structures should be of practical significance. Based on the basic principles of dynamic analysis by using the finite element method, an analysis method of the stochastic seismic responses of the underground structures is studied and the formulas for evaluating the statistical characteristics of the stochastic earthquake responses of the underground structures are derived by using the impulse-response function and the principles of Fourier Transform. As an example, the aseismic reliabilities of an underground structure are analyzed. The earthquake loads are taken into account as in a stationary random process. |
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| Keywords: | underground structures stochastic seismic responses impulse function fourier transform earthquake resistance reliability |
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