| 发生风雨激振拉索表面水膜形态数值分析和实测初探 |
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| 引用本文： | 许林汕,赵林,葛耀君.发生风雨激振拉索表面水膜形态数值分析和实测初探[J].空气动力学学报,2011,29(1). |
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| 作者姓名： | 许林汕 赵林 葛耀君 |
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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： | 国家自然科学基金重点项目，科技部国家重点实验室基础研究资助项目 |
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| 摘 要： | 结合Lemaitre斜拉索表面水膜风致形变解析算法,对数学模型中拉索运动方程进行修正,使其能计入拉索风致运动对表面附着水膜形态的影响,通过差分方法对方程进行数值求解,并进行参数分析:研究拉索表面水膜在重力、表面风压、表面摩擦力、表面张力作用下的形态变化,得到拉索发生风雨激振时表面水线的运动规律及形态变化.采用超声波探测仪对拉索表面水膜进行动态测量,实时获得拉索风雨激振形态下表面水膜动态响应数据,通过与水膜运动数值算法结果进行对比一定程度上探讨了圆截面斜拉索风雨振发生机理.
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| 关 键 词： | 斜拉索风雨激振 水膜计算理论 参数分析 水膜形态 水膜动态测量计 |
Numerical analysis and real-time measurement of water-film on rain-wind induced vibration cable |
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| XU Lin-shan,ZHAO Lin,GE Yao-jun.Numerical analysis and real-time measurement of water-film on rain-wind induced vibration cable[J].Acta Aerodynamica Sinica,2011,29(1). |
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| Authors: | XU Lin-shan ZHAO Lin GE Yao-jun |
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| Institution: | XU Lin-shan1,ZHAO Lin1,GE Yao-jun1(1.State Key Laboratory of Disaster Reduction of Civil Engineering,Tongji Univ.,Shanghai 200092,China) |
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| Abstract: | Combined the algorithm of wind-induced deformation of water film on stayed-cable which developed by Lemaitre,equation of motion in the mathematical model was modified,morphologic changing of water film which induced by the motion of cable could be concerned.Through solving the function by difference methods and parametric analysis,the evolution of water film which subject to gravity,wind pressure,friction and surface tension was investigated.We had got the movement and morphologic changing of the water rivu... |
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| Keywords: | rain-wind induced vibration of cable theoretical analysis of water-film parameters analysis shape of water-film real-time measurement of water-film |
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