| 既有铁路钢筋混凝土梁桥动态可靠性评估 |
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| 引用本文： | 郑立飞,韩忠磊.既有铁路钢筋混凝土梁桥动态可靠性评估[J].中国市政工程,2011(1):66-67,71. |
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| 作者姓名： | 郑立飞 韩忠磊 |
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| 作者单位： | 大连市市政设计研究院有限责任公司,辽宁,大连,116011 |
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| 摘 要： | 介绍了既有桥梁结构的动态可靠性分析方法,提出了桥梁的恒载概率模型、活载概率模型及抗力概率模型,并对可靠度计算方法中的验算点法进行了介绍。以一座既有铁路钢筋混凝土梁桥为工程背景,计算了该桥的活载效应统计参数、恒载效应统计参数及抗力统计参数等,利用验算点法计算了桥梁结构构件的可靠度指标,又采用PNET方法分析了整个桥梁体系的可靠性,最后给出了桥梁的可靠性评估结果。结果显示动态可靠性评估应用于铁路钢筋混凝土梁桥可以得到较好的评估结果。
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| 关 键 词： | 铁路梁桥 动态可靠性 评估 |
Dynamic Reliability Assessment of Existing Railway Reinforced Concrete Girder Bridges |
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| ZHENG Li-fei,HAN Zhong-lei.Dynamic Reliability Assessment of Existing Railway Reinforced Concrete Girder Bridges[J].China Municipal Engineering,2011(1):66-67,71. |
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| Authors: | ZHENG Li-fei HAN Zhong-lei |
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| Affiliation: | ZHENG Li-fei,HAN Zhong-lei (Dalian Municipal Engineering Design & Research Institute Co.,Ltd.,Dalian 116011,China) |
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| Abstract: | In this paper,dynamic reliability analysis method for existing bridges is introduced,dead load,live load and resistance probability models are put forward,and the design point method for reliability is introduced.Live load statistical parameter,dead load statistical parameter,resistance statistical parameter of an existing railway reinforced concrete girder bridge are calculated,the reliability index of bridge component is calculated by using the design point method,and then bridge system reliability is ana... |
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| Keywords: | railway girder bridges dynamic reliability assessment |
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