Discussion on the parameters matching of a buckling restrained brace in structural design

PDF(2019 KB)

Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (14) : 117-124.

WU Kechuan1，TAO Zhong2，YU Wenzheng1，LAN Xiang1，ZHANG Longfei1

Author information +

History +

Abstract

The issue of parameters matching of a buckling restrained brace(BRB) in structural design was studied.The relationship between BRB equivalent parameters and actual parameters was established by introducing a coefficient Qm.The reasonable matching relationship between the yield capacity and the equivalent rigidity of BRB, as well as the matching relationship between the yield deformation and the length of BRB were analyzed.Based on the analysis results, the reasonable value ranges of parameters were proposed to derive the relationship between the BRB and the main frame, and the conditions for BRB to yield preceding the main frame were presented.In addition, the BRB’s yield energy consumption under specific earthquake level and the deformation control under rare earthquake were discussed.Then the guarantee conditions for the energy consumption and the safety of BRB in different structural systems were provided.The design process of BRB products was established and the validity of the proposed parameter control was verified through examples analysis.The analysis results show that the BRB designed according to the proposed design process can achieve successfully all the performance objectives.The results provide a theoretical reference for the rational control of BRB product parameters and the application of BRB to structures in practical engineering.:

Key words

buckling restrained brace(BRB) / energy dissipation / equivalent parameter / yield displacement

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

WU Kechuan，TAO Zhong，YU Wenzheng，LAN Xiang，ZHANG Longfei. Discussion on the parameters matching of a buckling restrained brace in structural design[J]. Journal of Vibration and Shock, 2021, 40(14): 117-124

References

［1］郭彦林, 童精中, 周鹏.防屈曲支撑的型式、设计理论与应用研究进展［J］.工程力学, 2016,33(9): 1-14.
GUO Yanlin, TONG Jingzhong, ZHOU Peng.Research progress of buckling restrained braces: types, design methods and applications［J］.Engineering Mechanics, 2016,33(9): 1-14.

［2］孙治国, 华承俊, 石岩, 等.利用BRB实现桥梁排架基于保险丝理念的抗震设计［J］.振动与冲击, 2015,34(22): 199-205.
SUN Zhiguo, HUA Chengjun, SHI Yan, et al.Seismic design of bridge bents with BRB as a structural fuse［J］.Journal of Vibration and Shock, 2015,34(22): 199-205.

［3］WATANABE A, HITOMI Y, YAEKI E, et al.Properties of brace encased in buckling-restraining concrete and steel tube［C］//Proceedings of the 9th World Conference on Earthquake Engineering.Tokyo-Kyoto: WCEE, 1988.

［4］李国强, 孙飞飞, 张杨.屈曲约束支撑的应用分类标准与性能标准［J］.土木建筑与环境工程, 2010,33(增刊2): 391-396.
LI Guoqiang, SUN Feifei, ZHANG Yang.Application classification standard and performance standard of buckling restrained brace［J］.Journal of Civil,Architectural and Environmental Engineering, 2010,33(Sup 2): 391-396.

［5］高承勇, 安东亚.耗能型屈曲约束支撑在结构设计中的合理应用与参数控制［J］.建筑结构学报, 2016,37(6): 69-77.
GAO Chengyong, AN Dongya.Application and parameter controlling for dissipative BRB in structural design［J］.Journal of Building Structure, 2016,37(6): 69-77.

［6］TSAI K C, WU A C, WEI C Y, et al.Welded end-slot connection and debonding layers for buckling restrained braces［J］.Earthquake Engineering & Structural Dynamics, 2014,43(12): 1785-1807.

［7］CHUANG M C, TSAI K C, LIN P C, et al.Critical limit states in seismic buckling-restrained brace and connection designs［J］.Earthquake Engineering & Structural Dynamics, 2015,44(10): 1559-1579.

［8］建筑消能减震技术规程: JGJ 297—2013［S］.北京: 中国建筑工业出版社, 2013.

［9］上海蓝科建筑减震科技股份有限公司.金属减震设计手册:第6版［M］.上海:上海蓝科建筑减震科技股份有限公司, 2014.

［10］程光煜, 叶列平, 崔鸿超.防屈曲耗能钢支撑设计方法的研究［J］.建筑结构学报, 2008,29(1): 40-48.
CHENG Guangyu, YE Lieping, CUI Hongchao.Study on the design method of buckling-restrained brace［J］.Journal of Building Structure, 2008,29(1): 40-48.

［11］蔡克铨, 黄彦智, 翁崇兴.双管式挫屈束制(屈曲约束)支撑之耐震行为与应用［J］.建筑钢结构进展, 2005,7(3): 1-8.
CAI Kequan, HUANG Yanzhi, WONG Chongxing.Seismic performance and applications of double-tube buckling-restrained braces［J］.Progress in Steel Building Structures, 2005,7(3): 1-8.

［12］FAHNESTOCK L A, SAUSE R, RICLES J M, et al.Ductility demands on buckling-restrained braced frames under earthquake loading［J］.Earthquake Engineering and Engineering Vibration, 2003,2(2): 255-268.

［13］FEMA.Prestandard and commmentary for the seismic rehabilitation of buildings: FEMA450［R］.Washington, D.C.: Federal Emergency Management Agency, 2000.