（1 中国地震局工程力学研究所，哈尔滨 150080；2 中国地震局地震工程与工程振动重点实验室，哈尔滨 150080；3 东京工业大学，东京 152-8552；4 大阪工业大学，大阪 535-8585）

［摘要］提出一种新型的连续Z字形布置防屈曲支撑钢筋混凝土框架结构体系，并对该新型结构体系的1/2缩尺的子结构试件进行拟静力试验。每个子结构试件包括由钢筋混凝土梁、柱构成的钢筋混凝土部分和两个防屈曲支撑。试验结果表明，防屈曲支撑连接部位的竖向抗力与水平向抗力是相对独立的，防屈曲支撑在该新型结构体系中工作性能良好。同时通过试验发现，防屈曲支撑节点板相对于钢筋混凝土梁柱节点可能会发生一定的转动，导致为节点板提供水平抗力的预应力螺栓受力不均，还可能使为节点板提供竖向抗力的钢筋混凝土剪力键受到一定的拉力作用。这些不利因素需要在连接部分的设计中予以考虑。

［关键词］防屈曲支撑; 钢筋混凝土框架; 拟静力试验

中图分类号：TU375.4      文献标识码：A      文章编号：1002-848X(2014)18-0079-05

Cyclic loading test of reinforced concrete frame structure with continuously installed buckling restrained braces in zigzag configuration

Qu Zhe1,2, Maida Yusuke3, Kishiki Shoichi4, Sakata Hiroyasu3, Wada Akira3

 (1 Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080,China; 2 Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Harbin 150080, China; 3 Tokyo Institute of Technology, Tokyo 152-8552, Japan; 4 Osaka Institute of Technology, Osaka 535-8585, Japan)

Abstract: A new bracing system with continuously installed buckling restrained braces in zigzag configuration was proposed for reinforced concrete frame structures. Cyclic loading test was carried out on 1/2-scale subassemblies of the proposed structural system. Each of the subassemblies consists of reinforced concrete part of RC beams and columns and two buckling restrained braces. The test results show that the vertical and the horizontal bearing capacity of the connection of the buckling restrained braces are essentially independent of each other, and the buckling restrained braces perform well in the proposed system. However, the probable rotation of the connection gusset plate with respect to the beam-to-column joint may result in uneven force distribution of the prestressed bolts, which provide horizontal resistance for the connection gusset plate. At the same time, such rotation may cause tensile forces in the reinforced concrete shear connectors which provide vertical resistance for the connection gusset plate. All the above unfavorable conditions should be considered in the design of the gusset connection.

Keywords:buckling restrained brace; RC frame; cyclic loading test

*中国地震局工程力学研究所基本科研业务费专项（2013B13），国家自然科学基金青年科学基金项目（51308514）。

作者简介：曲哲，博士，副研究员，Email: quz@iem.ac.cn。

参考文献

［1］久木田真一, 萩野谷学, 宮川和明, ほか. 鋼管ブレースを使用した既存RC造建築物の耐震補強工法に関する実験的研究［C］//日本建築学会大会学術講演梗概集. 2000, C-2: 377-382.

［2］BROWN A P, AIKEN I D, JAFARZADEH F J. Buckling restrained braces provide the key to the seismic retrofit of the Wallace F. Bennett Federal Building ［J］. Modern Steel Construction, 2001(8): 29-37.

［3］顾炉忠, 高向宇, 徐建伟, 等. 防屈曲支撑混凝土框架结构抗震性能试验研究［J］. 建筑结构学报,  2011，32(7): 101-111.

［4］Standard for structural calculation of reinforced concrete structures ［S］. Tokyo：Architectural Institute of Japan, 2010.

［5］QU Z, KISHIKI S, SAKATA H, et al. Subassemblage cyclic loading test of RC frame with buckling restrained braces in zigzag configuration ［J］. Earthquake Engineering and Structural Dynamics, 2013，42(7): 1087-1102.