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工程力学  2015 

降雨冲击力试验研究

DOI: 10.6052/j.issn.1000-4750.2014.05.S055, PP. 11-14

Keywords: 振动分析,模拟降雨,降雨冲击力,试验研究,脉动冲击力

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Abstract:

采用弹性悬挂装置制作了三向风雨天平,并利用其进行了模拟降雨冲击力试验。实测了不同降雨强度、不同雨滴下落高度对结构的冲击力,研究了降雨对结构的平均冲击力和脉动冲击力与雨强、雨滴降落高度的关系。研究表明:降雨对结构产生平均冲击力和脉动冲击力。平均冲击力与雨强成正比,随雨滴降落的高度增加先增大,后减小。在强降雨时,脉动冲击力均方根值与降雨强度成线性关系,其主频率与结构固有频率一致。因此,研究在不同降雨强度下的力学性能具有重要意义。

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