（1 中国建筑标准设计研究院，北京 100048；2 清华大学土木系，北京 100084）

［摘要］介绍了美国新标准对偏心支撑框架设计的修订，并对我国抗震规范和有关规程对偏心支撑框架的修订作了说明。与过去的规定相比，新规定对构件的内力增大系数有明显降低。说明了降低的原因,并介绍了偏心支撑框架构件和连接设计的有关要求和应考虑的问题，可供设计人员参考。

［关键词］偏心支撑框架；消能梁段；内力增大系数

中图分类号：TU391.5文献标识码：A文章编号：1002-848X(2011)04-0007-04

Advance in eccentrically braced frame design

Cai Yiyan¹, Qian Jiaru², Yu Yinquan¹(1 China Institute of Building Standard Design and Research, Beijing 100048,China；2 Department of Civil Engineering, Tsinghua University,Beijing 100084, China)

Abstract:Renovations of eccentrically braced frame(EBF) design in AISC341-05 were mentioned, and revisions of EBF design in newly published Code for seismic design of buildings were also presented. Compared with former regulations, obvious decrease in enhancement factors of member internal force can be seen. The reasons of decrease were presented. The related design of members and connections design were introduced,which can be reference for engineer.

Keywords:eccentrically braced frame; link; enhancement factors of member internal force

作者简介：蔡益燕，高级工程师，一级注册结构工程师，Email:caiyy518@tom.com。

参考文献

［1］AISC341-97 Seismic provisions for structural steel buildings［S］. 1997.

［2］AISC341-05 Seismic provisions for structural steel buildings［S］. 2005.

［3］GB50011—2010 建筑抗震设计规范［S］.北京：中国建筑工业出版社，2010.

［4］GB50011—2001建筑抗震设计规范［S］.北京：中国建筑工业出版社，2001.

［5］JGJ99—98高层民用建筑钢结构技术规程［S］.北京：中国建筑工业出版社，1998.