光盘形结构风荷载的风洞实验研究

应用风洞模拟实验研究了光盘形状结构的风荷载特性.风洞实验结果表明,在没有周围建筑物影响时,由于光盘形结构的截面具有对称翼型,上、下表面受到风荷载基本上都是负压分布,叠加后作用在光盘结构上的总体风荷载很小.周围建筑的存在对光盘形的风荷载影响很大,有周围建筑时光盘形结构所受的升力要比没有周围建筑时的值大1～3倍以上.特别有趣的是单独光盘形结构的整体风荷载除了受到一个升力的作用外,还受到了一个迎风低头的翻转力矩,为类似结构的风荷载设计提供了有益的启示.

Wind tunnel research on wind loading on a CD-disk shape structure

By means of wind tunnel simulation wind loading on a CD-disk shape structure was studied.The results show that because of the symmetric aerofoil section shape of the single CD-disk shape structure,the wind pressure distributions on both surfaces of the structure are mostly negative.There is great effect on the wind loading on the structure due to the surrounding buildings.The lift force on the structure with surrounding buildings is 1-3 times greater than that of the single case.It is interested that not only the lift force,the single CD-disk shape structure also suffers a pitch moment toward to the wind.