Experimental study of the pinned double rectangular tube assembled buckling-restrained brace

作     者：Zi-qin JIANG Yan-lin GUO Ai-lin ZHANG Chao DOU Cai-xia ZHANG 

作者机构：College of Architecture and Civil Engineering Beijing University of Technology Beijing 100124 China Department of Civil Engineering Tsinghua University Beijing 100084 China Beijing Engineering Research Center of High-rise and Large-span Prestressed Steel Structure Beijing University of Technology Beijing 100124 China School of Civil Engineering Beijing Jiaotong University Beijing 100044 China Beijing Key Laboratory of Advanced Manufacturing Technology Beijing University of Technology Beijing 100124 China 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2017年第18卷第1期

页      面：20-32页

核心收录：

学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：Project supported by the National Natural Science Foundation of China (Nos. 51178243 and 51608014)  the China Postdoctoral Science Foundation (No. 2015M580030)  and the Natural Science Foundation of Beijing  China (No. 8131002) 

主　　题：Double-rectangular tube assembled buckling-restrained brace (DRT-ABRB) Construction detail Hysteretic behaviour Failure mode High strength bolt 

摘      要：In this study, seven pinned double-rectangular tube assembled buckling-restrained brace （DRT-ABRB） specimens were experimentally charaeterised by means of an axial cyclic test. The core member of the specimens was a single flat-plate. Two rectangular tubes were assembled using high strength bolts to form an external restraining member. Each rectangular tube was composed of an external steel channel and a cover plate. A gap or thin rubber filler was set between the core and the external restraining member to form an unbonded layer. The influence of several design parameters on the failure mode and energy dissipation capacity of the ABRB was investigated, including the height of the core wing plate, thickness of the external cover plate, and height of the external channel flange. This experimental study demonstrated that a local pressure-bearing failure at the end of the external member arises when the external cover plate is too thin or if the end construction detail is unreasonable. When the end rotations of the DRT-ABRB were restricted, the hysteretic performance was shown to be superior to that of a pure pinned DRT-ABRB. Finally, all the tested DRT-ABRBs exhibited excellent energy dissipation performance which amply satisfied existing regulation requirements.