| 基于时变可靠度理论的既有桥梁结构动态可靠度指标计算 |
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| 引用本文： | 杜斌,向天宇,赵人达. 基于时变可靠度理论的既有桥梁结构动态可靠度指标计算[J]. 东北林业大学学报, 2009, 37(10) |
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| 作者姓名： | 杜斌 向天宇 赵人达 |
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| 作者单位： | 西南交通大学,成都,610031;西南交通大学,成都,610031;西南交通大学,成都,610031 |
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| 摘 要： | 基于时变可靠度理论,在将车辆荷载效应随机过程模型转换为最大值分布时,将设计基准期更改为评估目标期,同时考虑既有结构抗力衰减导致结构服役期的缩短,提出既有桥梁结构动态可靠度指标的计算方法.
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| 关 键 词： | 评估目标期 抗力衰减 时变可靠度 可靠指标 |
Dynamic Reliability Index Calculation of Existing Highway Bridge Based on Time-dependent Reliability Theory |
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| Du Bin,Xiang Tianyu,Zhao Renda. Dynamic Reliability Index Calculation of Existing Highway Bridge Based on Time-dependent Reliability Theory[J]. Journal of Northeast Forestry University, 2009, 37(10) |
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| Authors: | Du Bin Xiang Tianyu Zhao Renda |
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| Affiliation: | Du Bin,Xiang Tianyu,Zhao Renda(Department of Bridge Engineering,Southwest Jiaotong University,Chengdu 610031,P. R. China) |
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| Abstract: | Effect of bridge service life on bridge reliability was studied in order to effectively evaluate existing bridge reliability. Based on time-dependent reliability theory,a method for calculating the dynamic reliability indexes of existing highway bridges was developed by converting stochastic process model of vehicle load effect into maximum distribution and replacing design reference period by evaluation reference period; meanwhile the resistance degradation of existing structures,which could lead to the re... |
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| Keywords: | Evaluation reference period Resistance degradation Time-dependent reliability Reliability indexes |
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