| 既有铁路钢桥构件剩余疲劳寿命及其可靠度分析 |
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| 引用本文： | 王爱和,陈梦成,蔡小萍.既有铁路钢桥构件剩余疲劳寿命及其可靠度分析[J].桥梁建设,2008(1):30-32,36. |
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| 作者姓名： | 王爱和 陈梦成 蔡小萍 |
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| 作者单位： | 华东交通大学土木建筑学院,江西,南昌,330013 |
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| 摘 要： | 基于概率断裂力学理论、Matlab统计和优化工具箱,采用Monte-Carlo模拟方法和可靠度最优化方法,对赣江大桥一钢构件的剩余疲劳寿命及其可靠度进行分析.利用Matlab的数值计算功能解决了用Monte-Carlo法直接抽样的困难;同时Matlab的优化功能简化了计算过程,提高了计算效率.
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| 关 键 词： | 钢结构 概率断裂力学 疲劳剩余寿命 可靠度 |
| 文章编号： | 1003-4722（2008）01-0030-03 |
| 收稿时间： | 2007-10-15 |
| 修稿时间： | 2007年10月15 |
Analysis of Remaining Fatigue Life and Its Reliability of Members of an Existing Railway Steel Bridge |
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| WANG Ai-he,CHEN Meng-cheng,CAI Xiao-ping.Analysis of Remaining Fatigue Life and Its Reliability of Members of an Existing Railway Steel Bridge[J].Bridge Construction,2008(1):30-32,36. |
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| Authors: | WANG Ai-he CHEN Meng-cheng CAI Xiao-ping |
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| Abstract: | Based on the probabilistic fracture mechanics theory, the Matlab statistics and optimization tool box, the Monte-Carlo simulation method and reliability optimization method are used to analyze the remaining fatigue life and its reliability of the steel members of Ganjiang River Bridge. The utilization of the numerical calculation function of the Matlab successfully tackles the difficulty of direct sampling by the Monte-Carlo simulation method. At the same time, the powerful optimization function of the Matlab also simplifies the calculation process and improves the calculation efficiency. |
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| Keywords: | steel structure probabilistic fracture mechanics remaining fatigue life reliability |
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