铝合金空间网格结构研究现状及关键问题

相比于钢结构，铝合金结构由于其自重轻、耐腐蚀和易加工等优点，在结构工程中备受关注，其应用也日益增多。从铝合金作为建筑结构用材与钢材的特性对比出发，列举了国内外大量具有代表性的铝合金空间网格结构，综述了国内外对于铝合金单、双层网壳和网架等铝合金空间网格结构及节点体系的研究现状，并指出目前试验研究、理论研究和设计应用的主要不足之处；通过进一步探讨，提出铝合金空间网格结构的研究与应用中需解决的若干关键技术问题，这些问题集中在节点刚度和杆件初始缺陷对铝合金单层网壳结构整体稳定性的影响、新型节点形式的研究以及铝合金空间网格结构的抗震、抗火性能研究等方面。

Aluminum reticulated spatial structures: state of the art and key issues

Compared with steel structures, aluminum structures have the advantages such as light weight, resistance to corrosion and easy extrusion process, etc. Due to these advantages, more and more attention was attracted and their applications are getting wider in the field of building engineering. The material properties of steel and aluminum were compared as load-bearing structural materials. Then a large number of representative aluminum reticulated spatial structures in China and abroad were bringing together and briefly introduced. A broad state of the art review of aluminum reticulated spatial structures was presented, including aluminum single and double layered reticulated shells and double-layer grids, both domestic and abroad. The major inadequacies were pointed out from the present experimental and theoretical study and structural design status at the same time. Several key issues to be further explored in the research and application of aluminum reticulated spatial structures were identified and discussed: the effect of joint stiffness and member initial imperfections on the overall stability of aluminum single-layer latticed shells; new joint systems; the dynamic response of aluminum reticulated spatial structures when subjected to the earthquake and the structural behavior when exposed to fire conditions.