摘要
风荷载是低层轻型房屋的围护面板最主要的可变荷载,GB 50009—2012《建筑结构荷载规范》和GB51022—2015《门式刚架轻型房屋钢结构技术规范》对围护结构设计中风荷载计算规定不同,为此分析比较了两本规范中围护结构风荷载的计算方法及结果。以YX35-125-750屋面板型为例,分析了风荷载取值对设计板厚度的影响,并提出对低层轻型房屋外墙及处于D类地面粗糙度的低层轻型房屋屋面风荷载宜按照GB 50009—2012进行计算,对处于B类地面粗糙度的低层轻型房屋屋面风荷载宜按GB 51022—2015进行计算。
Wind load is the main live load on cladding of low-rise light-weight buildings.There are different provisions for calculating the wind load of the envelope structures according to Load Code for the Design of Building Structures( GB50009—2012) and Technical Code for Steel Structure of Light-Weight Building with Gabled Frames( GB 51022—2015).The calculation methods and results for wind loads on envelope structures were analyzed and compared. The YX35-125-750 roof sheeting was taken as an example to analyze its influence. The wind load calculation for the low-rise light-weight buildings' exterior wall and the low-rise light-weight buildings' roof in class D terrain roughness should be carried out according to GB 50009—2012. The wind load calculation for the low-rise light-weight buildings' roof in class B terrain roughness should be carried out according to GB 51022—2015.
引文
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