目前,当建筑工程的跨度超过20m时,大多采用网架结构,如各类屋架、薄壳、斜拉拱及悬吊结构等,但它们一般需要较大的起拱高度,有的挠度过大,这些常用的结构形式往往很难满足建筑物的使用功能,或者大幅度地增加了造价,使许多优秀的建筑构思难于实现。研制出高度小、造型 At present, when the span of a construction project exceeds 20m, most of the grid structures are used, such as various types of roof trusses, thin shells, diagonal arches, and suspended structures, but they generally require large arching heights, and some are too large. These commonly used structural forms are often difficult to satisfy the function of the building, or have greatly increased the cost, making many excellent architectural ideas difficult to achieve. Developed small height and shape