斜拉索风雨激振试验新装置的设计与应用

发布时间：2018-06-23 19:25

本文选题：斜拉索 + 风雨激振　；参考：《振动与冲击》2017年15期

【摘要】：针对石家庄铁道大学回直流可变大气边界层风洞,设计了一种用于斜拉索风雨激振试验的新装置,介绍了该装置的各组成部分及工作原理。应用该装置开展了一系列的风雨激振风洞试验,研究了斜拉索的倾角、降雨强度、来流风偏角和来流风速等参数对斜拉索风雨激振的影响。试验结果表明,该装置不仅可以比较方便地调节斜拉索的倾角和斜拉索与来流风之间的偏角,而且可以实现自然雨滴特性的模拟和雨量的控制;针对选定的直径为155 mm的斜拉索,在倾角为25°、风偏角为35°、降雨强度为10 mm/h、风速为13 m/s左右的条件下,斜拉索风雨激振的幅度最大。
[Abstract]:In view of the wind tunnel with variable atmospheric boundary layer in Shijiazhuang Railway University, a new device for wind and rain induced vibration test is designed, and its components and working principles are introduced. A series of wind tunnel tests for wind and rain induced vibration are carried out, and the inclination, rainfall intensity and wind deflection angle of the cable are studied. The experimental results show that this device can not only easily adjust the angle between the inclined cable and the cable and the wind, but also realize the simulation of the natural raindrop characteristics and the control of the rainfall. For the selected cable-stayed cable with a diameter of 155 mm, the dip angle is 25 degrees. The wind deflection angle is 35 degrees, the rainfall intensity is 10 mm/h, and the wind speed is about 13 m/s.
【作者单位】：石家庄铁道大学大型结构健康诊断与控制研究所;河北省大型结构健康诊断与控制重点实验室;石家庄铁道大学土木工程学院;
【基金】：国家自然科学基金(51308359;51378323) 河北省自然科学基金(E2014210138) 河北省高等学校科学技术研究基金(QN2015213)
【分类号】：U446.1

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