渭南鸿基大厦钢结构悬挑屋盖设计

Research on the Cantilevered Steel Structure Roof of Hongji Building in Weinan

陕西渭南鸿基大厦下部结构为框架-剪力墙结构,支承上部"官帽"为钢结构悬挑屋盖。两个设计方案分别为管桁架结构和钢框架结构,中间大跨度部分采用了空间桁架体系,考虑了51种荷载组合,应用空间整体模型的分析方法,采用Midas gen软件对结构的周期、振型、强度、刚度等性能进行了计算分析,结果表明,管桁架结构能够满足规范设计要求。

The substructure of Hongji Building in Weinan of Shanxi is frame shear wall structure, supporting a cantilevered steel structure in the shape of an ＂official hat＂. Two different design proposals were compared between pipe truss structure and steel frame structure. Space truss system was adopted in the middle large span part. Spatial analysis of the overall model was carried out using Midas gen software and 51 types of load combinations were considered. The period, mode, strength and stiffness were compared and the results showed that the pipe truss structure was conformed to the specifications and design requirements.