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试述风对屋面积雪的漂移作用及其对屋面雪荷载取值的影响?
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试述风对屋面积雪的漂移作用及其对屋面雪荷载取值的影响?
时间:2021-07-23 17:39
关键词:
荷载及设计要求
土木建筑工程
大学试题
工学
答案解析
<p> 风对雪的漂积作用是指下雪过程中,风会把部分将要飘落或者已经漂积在屋面上的雪吹移到附近地面或邻近较低的屋面上,对于平屋面和小坡度屋面,风对雪的漂移作用会使屋面上的雪压一般比邻近地面上的雪压要小;对于双坡屋面、高低跨屋面,迎风面吹来的雪往往在背风一侧屋面上漂积,引起屋面不平衡雪荷载。风对积雪的漂移影响可通过屋面积雪分布系数加以考虑。</p>
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试述风对屋面积雪的漂移作用及其对屋面雪荷载取值的影响?
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