带复杂连廊的钢结构分析与设计

Analysis and design of steel structures with complex connection

某项目由平面呈矩形的两栋塔楼和L形连廊组成。两栋塔楼均采用钢框架-支撑结构,L形连廊采用由塔楼和三根斜柱共同支承的多榀跨层桁架结构,形成带复杂连廊的整体结构。根据项目特点,详细介绍了连廊的结构构成,采用抗震性能化设计方法,确定了结构抗震性能目标,进一步完成了结构的小、中、大震分析。考虑到连廊的重要性,对连廊结构补充了竖向极限承载力、楼板舒适度的专项分析。结果表明,本项目结构体系合理,结构具有良好的抗震性能,可实现预定的性能目标。

The project consists of two towers arranged in a rectangular plan and an L-shaped connection.The two towers are both steel frame-support structures,and the L-shaped connection is a multi-storey truss supported by the towers and three inclined columns,which form the structure with complex connection.According to the characteristics of the project,the composition of the connection was introduced in detail,the seismic performance target of the structure was determined by using the seismic performance design method,and the small,medium and large earthquake analysis were further completed.Considering the importance of the connection,the special analysis of vertical ultimate bearing capacity and floor comfort of the structure were added.The results show that the structure system is reasonable,the structure exhibits good seismic performance,the predetermined performance target can be achieved.