| 军山斜拉桥非线性时域抖振分析 |
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| 引用本文： | 罗雄,陈文化.军山斜拉桥非线性时域抖振分析[J].地震工程与工程振动,2002,22(3):71-76. |
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| 作者姓名： | 罗雄 陈文化 |
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| 作者单位： | 1. 西南交通大学土木工程学院,四川,成都,610031
2. 北方交通大学土木建筑学院,北京,100044 |
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| 摘 要： | 武汉军山大桥是跨越长江的中跨跨径很大的斜拉桥，在脉动风作用下，其线性抖振响应较大，动力放大系数基本上大于2。为了比较该桥非线性抖振响应与线性抖振响应的差别，本文根据某地短期的实际风速时程记录资料，在一定的概率下，对该地区100年一遇的极值风速时程进行抖振分析比较。计算结果表明，对于该桥说来非线性影响不是很明显。
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| 关 键 词： | 非线性 斜拉桥 时域抖振分析 脉动风 风速 |
| 文章编号： | 1000-1301(2002)03-0071-06 |
Nonlinear buffeting analysis in time domain for Junshan cable-stayed bridge |
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| LUO Xiong ,CHEN Wen hua.Nonlinear buffeting analysis in time domain for Junshan cable-stayed bridge[J].Earthquake Engineering and Engineering Vibration,2002,22(3):71-76. |
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| Authors: | LUO Xiong CHEN Wen hua |
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| Institution: | LUO Xiong 1,CHEN Wen hua 2 |
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| Abstract: | Junshan bridge in Wuhan is a cable stayed bridge across Changjiang river. Its linear response of buffeting to pulsatile wind is large. The dynamic amplifying coefficient is more than 2 . Timetable of extreme wind velocity is simulated to make a comparison between linear and nonlinear buffeting responses, for finding discriminations of them under certain probability on the basis of real wind velocity records. The results show that nonlinear influence is not obvious. |
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| Keywords: | nonlinear cable stayed bridge buffeting analysis time domain |
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