| 斜拉索风雨振动分析及机理初探 |
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| 引用本文： | 何向东,廖海黎.斜拉索风雨振动分析及机理初探[J].空气动力学学报,2005,23(4):480-483,495. |
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| 作者姓名： | 何向东 廖海黎 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 摘 要： | 将上水路对斜拉索竖向振动的影响简化为拟定常气动力随其运动状态的变化,建立了斜拉索风雨振动单自由度分析模型;同时考虑上水路运动的耦合作用后,即发展成为二自由度分析模型.采用 Runge-Kutta法分别求解两组非线性微分方程组,得出斜拉索竖向振动的振幅、外力功率的仿真时程,并据此阐述了斜拉索风雨振动发生时系统的能量变化过程.
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| 关 键 词： | 斜拉索 风雨振动 拟定常气动力 Runge-Kutta法 功与能量 |
| 文章编号： | 0258-1825（2005）04-0480-04 |
| 收稿时间： | 2004-04-29 |
| 修稿时间： | 2004-04-292004-08-18 |
Analysis and initial mechanism research of rain-wind-induced vibration of stay-cable |
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| HE Xiang-dong,LIAO Hai-li.Analysis and initial mechanism research of rain-wind-induced vibration of stay-cable[J].Acta Aerodynamica Sinica,2005,23(4):480-483,495. |
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| Authors: | HE Xiang-dong LIAO Hai-li |
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| Institution: | School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China |
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| Abstract: | A single degree of freedom wind-rain-induced vibration analytical model of a piece of cable is formed based on simplifying the influence of upper rivulet on model vertical movement to the variety of quasi steady air force with the change of system state, another two degree of freedom analytical mode is acquired after introducing the coupled effect of upper rivulet. Using Runge-Kutta method, the time history of model amplitude, the power of exciting force and damping force are simulated by solving the ordinary differential equation respectively, and the changing of system energy during vibration is expatiated. |
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| Keywords: | cable wind-rain-induced vibration quasi steady air force Runge-Kutta method work and energy |
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