| 环境因素下劣化混凝土桥梁的体系时变失效概率计算 |
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| 引用本文： | 刘扬.环境因素下劣化混凝土桥梁的体系时变失效概率计算[J].长沙理工大学学报(自然科学版),2007,4(2):27-31. |
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| 作者姓名： | 刘扬 |
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| 作者单位： | 长沙理工大学,桥梁与结构工程学院,湖南,长沙,410076;中南大学,土木建筑学院,湖南,长沙,410008 |
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| 基金项目： | 国家自然科学基金
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交通部西部交通建设科技项目 |
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| 摘 要： | 将桥梁视为由各主要构件组成的一个体系,考虑一般大气环境下劣化混凝土桥梁抗力退化性及其荷载的时变性,采用自适应重要抽样法计算劣化桥梁的体系时变失效概率.同时,对变量进行了参数敏感性分析.研究结果对科学、经济地制定桥梁维修计划和方案具有重要意义.
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| 关 键 词： | 劣化桥梁 体系 时变失效概率 参数敏感性 |
| 文章编号： | 1672-9331（2007）02-0027-05 |
| 修稿时间： | 2007-03-08 |
Time-variant system failure probability analysis of environment-degraded concrete bridge |
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| LIU Yang.Time-variant system failure probability analysis of environment-degraded concrete bridge[J].Journal of Changsha University of Science and Technology:Natural Science,2007,4(2):27-31. |
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| Authors: | LIU Yang |
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| Institution: | 1. College of Bridge and Structure Engineering,Changsha University of Science and Technology,Changsha 410076, China ; 2. College of Civil Engineering, Central South University, Changsha 410008, China |
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| Abstract: | A bridge can be treated as a system consisted of several main components. In this paper, the time-variant failure probability of the degraded bridge subjected to time-dependent resistance and load is investigated. The adaptive important sampling method is used to evaluate the system time-variant failure probability. Additionally, the effect of several parameters on the system failure probability is studied. |
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| Keywords: | degraded bridge system time-variant failure probability |
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