| 高排架渡槽风振的计算方法 |
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| 引用本文： | 李遇春,楼梦麟.高排架渡槽风振的计算方法[J].同济大学学报(自然科学版),2002,30(2):139-145. |
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| 作者姓名： | 李遇春 楼梦麟 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目 ( 5 98790 15 ) |
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| 摘 要： | 考虑渡槽的流－固耦合效应,导出了结构风振方程,导得了流－固耦合系统的传递函数矩阵的模态展开式,给出了结构风振响应的时域（时程分析）和频域（随机振动）计算公式。通过时程分析与随机风振的数值算例表明,结构风振响应分析一般应同时考虑结构振荡模态与流体振荡模态的贡献,提出的计算方法是可行的,可用于工程设计参考。
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| 关 键 词： | 高排架渡槽 流－固耦合效应 结构风振 响应计算 时程分析 随机振动 抗风设计 |
| 文章编号： | 0253-374X(2002)02-0139-07 |
| 修稿时间： | 2000年12月27 |
Computing Method of Wind- induced Vibration for Tall - bent Aqueduct |
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| LI Yu-chun,LOU Meng-lin.Computing Method of Wind- induced Vibration for Tall - bent Aqueduct[J].Journal of Tongji University(Natural Science),2002,30(2):139-145. |
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| Authors: | LI Yu-chun LOU Meng-lin |
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| Abstract: | In this paper the wind-induced vibration equations of aqueduct-bridge structure,with fluid-structure interaction,were given.The transfer function matrix of the system was derived in the modal expansion.The general response formulas in time and frequency domain were presented for the structure subjected to dynamic wind load.Several numerical examples(time-history and random-vibration analyses) were conducted.The results suggest that both "structure-oscillation-mode" and "fluid-oscillation-mode" should be considered in the structural response analysis.The analytical method of this paper is valid and can be used in engineering designs. |
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| Keywords: | aqueduct bridge fluid-structure interaction wind-induced vibration response computation |
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