广西钦州市体育场钢结构抗风设计

广西钦州体育场造型新颖,酷似海边飘带,包含东、西两看台,看台下部为钢筋混凝土框架结构,上部采用大跨度悬挑钢结构。体育场西看台屋盖南北长近300m,最宽处39m,屋盖钢结构支承在高差悬殊的混凝土结构上。本文结合风洞试验结果对体育场钢结构的风荷载和风振响应进行了分析,给出了考虑各个风向角下结构响应及风振系数的等效静风荷载,并在此基础上对结构进行了整体计算分析。结果表明,本结构属于风敏感结构,西看台钢结构悬挑部分在风荷载工况下位移比较大,因此需在前支座处构造设置设抗风拉杆。

Wind Resistance Design of Steel Structural for Guangxi Qinzhou Stadium

Guangxi Qinzhou stadium with novel style,looks like steamer,contains two stands.The bottom of the stand is reinforced concrete frame structure,the main structure is big span cantilever steel structure.The west stand is about 300m long from north to south,and its widest point is 39m.The roof steel structure is supported by the concrete structure.The model test of the stadium was carrried on the wind tunnel testing lab.For analysis of the wind pressure and wind induced vibration of the steel structure,which the the equivalent static wind loads is given.under the consideration of the wind-induced response and the gust response factor in all direction.Through the whole calculation,it is found that the steel structure is belong to wind sensitive structure,large displacement exits in the cantilever part of the west stand under the wind load of the testing,so the tie rods should be designed in the front support.