| 界限为随机过程的工程结构时变动力可靠度 |
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| 引用本文： | 张俊芝,李桂青.界限为随机过程的工程结构时变动力可靠度[J].工业建筑,2001,31(10):24-27. |
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| 作者姓名： | 张俊芝 李桂青 |
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| 作者单位： | 1. 南昌水利水电高等专科学校建筑工程系
2. 武汉理工大学 |
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| 基金项目： | 水利部水利技术开发基金项目资助 (SJ9710 ) |
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| 摘 要： | 基于结构时变抗力的统计特性 ,提出了考虑时变抗力瞬变衰减的一个随机过程界限 ,并推导了基于这种随机过程界限的时变动力可靠性计算基本公式 ;给出了非平稳过程线性组合的首次超越动力可靠度的一个有效数值计算方法。算例的结果表明 ,考虑时变抗力瞬变衰减时 ,动力可靠性随动荷载的持续时间迅速下降
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| 关 键 词： | 时变可靠度 非平稳过程 随机过程界限 首次超越 |
| 修稿时间： | 2001年5月9日 |
TIME-DEPENDENT DYNAMIC RELIABILITY OF ENGINEERING STRUCTURES BASED ON STOCHASTIC PROCESS BOUNDS |
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| Zhang Junzhi.TIME-DEPENDENT DYNAMIC RELIABILITY OF ENGINEERING STRUCTURES BASED ON STOCHASTIC PROCESS BOUNDS[J].Industrial Construction,2001,31(10):24-27. |
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| Authors: | Zhang Junzhi |
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| Abstract: | In the paper,a stochastic process bound model is propsed for considering the instantaneous deterioration based on statistical characteristics of the structural time|dependent resistance.Then,the basic formulas for time|dependent dynamic reliability of a structure considering the stochastic process bound are proposed.An efficient numerical method is proposed for calculation of the first crossing reliability of non stationary process linear combination.The results of an example showed,considering the instantaneous deterioration of structural resistance,that the reliability is reduced rapidly with the extension of lasting time of dynamic loads. |
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| Keywords: | time|dependent reliability non stationary processes stochastic process bound the first crossing problem |
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