| 桥梁结构颤振稳定的概率性评价 |
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| 引用本文： | 葛耀君,项海帆.桥梁结构颤振稳定的概率性评价[J].同济大学学报(自然科学版),2001,29(1):70-74. |
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| 作者姓名： | 葛耀君 项海帆 |
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| 作者单位： | 同济大学桥梁工程系 |
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| 基金项目： | 国家自然科学基金资助项目(59608006);高等学校博士学科点专项科研基金资助项目(96024713) |
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| 摘 要： | 在对现有桥梁颤振检验方法简要评述的基础上，提出了以我国抗风设计掼为基础的设计风速效应模型、监界风速抗力模型和颤振稳定极限状态，运用一次二阶矩理论的中心点法和验算点法建立了基于实验加理论方法的桥梁颤振稳定的概率性分析方法，并对上海杨浦大桥和江阴长江大桥进行了颤振稳定的概率性评价。
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| 关 键 词： | 桥梁结构 颤振稳定 概率性评价 一次二阶矩 颤振失稳模式 风速效应模型 抗风设计 临界风速抗力模型 |
| 文章编号： | 0253-374(2001)01-0070-05 |
| 修稿时间： | 2000年3月10日 |
Probabilistic Assessment Study of Flutter Instability of Bridge Structures |
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| GE Yao jun,XIANG Hai fan.Probabilistic Assessment Study of Flutter Instability of Bridge Structures[J].Journal of Tongji University(Natural Science),2001,29(1):70-74. |
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| Authors: | GE Yao jun XIANG Hai fan |
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| Abstract: | Based on the knowledge of the Wind Resistant Design Guide Book for Highway Bridges of China,this paper presents a probabilistic assessement method for determining the failure probability due to flutter instability of bridges after reviewing the available technical publications.This method includes the limit state function given by the design wind speed and the critical flutter speed and several approaches based on the first order reliability method.The mean point,the design point and its extended approaches have been used in calculating the failure probability of the Shanghai Yangpu Bridge and the Jianyin Yangtse River Bridge.. |
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| Keywords: | bridges flutter instability probabilistic assessment first order reliability |
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