The exact simulation of atmospheric boundary layer is not only the precondition of the wind tunnel test of the large spanroof structures, but also a difficulty of its.
大气边界层的正确模拟是用风洞试验测量大跨屋面风荷载的前提，也是风洞试验研究的难点。
2
The long spanroof structure of the multipurpose gymnasium consists of steel and timber bow trusses that seemingly float above the clerestory and becomes skyline feature of the project.
运动场的长屋顶结构则由钢与木结构组成，这样的结构看上去像是漂浮在空中，形成该项目的天际线。
3
The mode energy participation factor and the cumulated factor are presented in order to identify the dominant modes of fluctuating wind-induced response for a large-spanroof.