某大跨度体育馆钢屋盖与幕墙子结构分析研究

Analysis Study of Steel Roof Substructure and Curtain Wall Substructure of a Large-span Gymnasium

对于传统幕墙,一般情况下均为固定在上、下两个楼层之间,以其中一个楼层为重力吊挂点,另一个楼层为侧向荷载支撑点。对于自重较大的幕墙,通常需要上下两部分结构共同提供支承作用,而这种幕墙连接形式下结构的传力路径并不明确。从某实际工程入手,针对这种幕墙连接形式对整体结构进行了拆分,提出了一种子结构分析方法,旨在揭示子结构间的传力路径,得出各子结构的简化模型。考虑到幕墙在承载能力极限状态下的失效情况,以及探究幕墙对屋盖的支承作用对屋盖造成的影响,进行了幕墙连接节点的失效分析,得出幕墙对屋盖支承作用的失效并未对屋盖产生破坏性的影响。

Under normal circumstances,traditional curtain wall is fixed between the upper and lower floors. It is fixed on one of the floors as gravity hanging point,another as lateral supporting point. But for those curtain walls whose self weight is very large,they need to be supported by both upper and lower structures. The lack of this methed is that it ＇s hard to figure out the path of force transfer in the whole structure. Therefore,a substructure analysis method was put forward to reveal the path of force transfer between steel roof substructure and curtain wall substructure. Simplified models of substructures were obtained. Considering that curtain walls were probably out of work under ultimate limit state and the curtain wall supporting may act an important role on the roof structure,failure analysis on connections of the curtain wall was conducted. It is concluded that the failure of the supporting of the curtain wall didn＇t have a devastating impact on the roof structure.