(华南理工大学建筑设计研究院有限公司, 广州 510641)

［摘要］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。

［关键词］超限高层建筑； 连体钢桁架； 性能化设计

中图分类号：TU352-1文献标识码：A文章编号：1002-848X(2019)20-0046-05

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

Zhou Weixing, Sun Wenbo, Guo Chengzhi

(Architectural Design & Research Institute of SCUT Co., Ltd., Guangzhou 510641, China)

Abstract: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.

Keywords:out-of-code tall building; connected steel truss; performance-based design

作者简介：周伟星，硕士，工程师，Email：625327060@qq.com。