为满足日益发展的生产建筑、商业、展览事业以及城市建设与改造、节省征用土地的需要,多层大跨建筑,近年来在国内外都有所采用和发展。自1983年以来中国建筑科学研究院等单位对多层大跨建筑组合网架结构进行了理论分析、试验研究和工程实践工作,并首次在新乡百货大楼采用了多层 In order to meet the growing needs of building construction, commerce, exhibitions, and urban construction and renovation, and to save the need for land acquisition, multi-story large-span buildings have been adopted and developed at home and abroad in recent years. Since 1983, the Chinese Academy of Building Research and other organizations have conducted theoretical analysis, experimental research and engineering practice on multi-story large-span architectural composite grid structures, and for the first time adopted a multi-layered structure in Xinxiang Department Store.