李国强¹，孙飞飞¹，官  海²，胡大柱¹
(1同济大学，上海200092; 2上海蓝科钢结构技术开发有限责任公司，上海200092)

[摘要] 屈曲约束支撑是一种高效的抗侧力构件，本文介绍屈曲约束支撑基本原理、屈曲约束支撑框架的特点以及国产TJ型屈曲约束支撑的工程应用。工程应用结果表明，TJ型屈曲约束支撑在降低结构地震作用、降低用钢量以及总造价、改善结构薄弱层性能、增大结构抗扭刚度、增大结构耗能能力、框架结构加固等方面具有较好的应用价值。且当轴心受力的钢构件长细比较大时候，采用屈曲约束支撑具有构件造价的优势。
[关键词] 屈曲约束支撑；抗震性能；加固

Engineering Application of TJ-type Buckling Restrained Brace
Li Guoqiangl, Sun Feifeil, Gong Haj2, Hu Dazhul
(1 Tongji University, Shanghai 200092, China; 2 Shanghai Lanke Steel Structure Co. Ltd., Shanghai 200092, China)

Abstract: Buckling restrained brace( BRB) is a high efficiency lateral force-resisting member. The basic principle of the BRB, the characteristic of the frame with BRB is presented. The engineering applications of TJ-type BRB are introduced. The TJ-type BRB can be used in decreasing the earthquake actions, saving the steel consumptions, improving the behaviors of the weak story, increasing the torsional stiffness, increasing energy dissipation. And when the slenderness ratio of brace is big, the BRB is more economic.
Keywords: buckling restrained brace; seismic behavior; structural strengthening