某超限结构及连体钢桁架性能化设计

Performance-based seismic design of an out-of-code building and connected steel truss

某科研大楼为超限高层建筑,建筑结构平面呈U字形,顶部两层通过跨度约30m的钢桁架结构连接成封闭的口字形,为局部连体结构。介绍了该结构整体的抗震设计性能化分析历程,重点阐述了连体钢桁架的结构性能化分析要点和方法,从力学基本概念和工程应用实践出发,提出了将连体钢桁架视为一个整体构件进行性能化设计的方法,取得了良好的效果。

A scientific research building is an out-of-code tall building.The plane of the structure is U-shaped.The top two floors are connected into a closed square shape through a steel truss corridor spanning about 30m.The building is a locally connected structure.The process of performance-based seismic analysis of the whole structure was introduced.The main points and methods of performance-based seismic analysis for the structure of the connected steel truss were expounded.Based on the basic mechanical concept and engineering application practice,the method of performance-based seismic design of the connected steel truss as an integral component was put forward and good results were obtained.