椭圆形平面的双曲抛物面屋顶风洞试验

对于屋顶为双曲抛物面的建筑,主要国际标准中没有计算其风荷载的参数数据。然而,这种类型的屋顶比传统结构更有优势,且特别适用于中等跨度和大跨度结构中。研究旨在参数化4种不同形状(分别为正方形、长方形、圆形和椭圆形)双曲抛物面屋顶的风压系数。特别针对椭圆形屋顶进行了研究。为计算压力系数,对不同形状的屋顶进行了空气动力学风洞试验,并将椭圆形与圆形屋顶进行了对比,证实了椭圆形屋顶的高效性。

Wind Tunnel Tests on Hyperbolic Paraboloid Roofs with Elliptical Plane Shapes

No parametric data exists in the main international standards to calculate wind action on buildings with hyperbolic paraboloid roofs. This type of roof, however, is particularly efficient in covering medium to large spans and is highly competitive compared to traditional structures. Our research aims at parameterization of pressure coefficients on roofs with hyperbolic paraboloid shapes with four different footprints, respectively, square, rectangular, circular and elliptical. This paper studies the elliptical shape in particular. Aerodynamic wind tunnel tests have been performed on these shapes with the object of calculating pressure coefficients. A comparison is also made between elliptical and circular shapes in order to demonstrate the high efficiency of the elliptical shape.