[1] Huang Zhen, Li Zongjing, Ding Ting,. Experimental investigation of BRB with transverse rib restraints [J]. Journal of Southeast University (English Edition), 2013, 29 (1): 62-65. [doi:10.3969/j.issn.1003-7985.2013.01.013]
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Experimental investigation of BRB with transverse rib restraints(
)
横肋约束防屈曲支撑试验研究
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 29
- Issue:
- 2013 1
- Page:
- 62-65
- Research Field:
- Civil Engineering
- Publishing date:
- 2013-03-20
Info
- Title:
- Experimental investigation of BRB with transverse rib restraints
- 横肋约束防屈曲支撑试验研究
- Author(s):
- Huang Zhen1, Li Zongjing1, Ding Ting2
-
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2Jiangsu Posts & Telecommunications Planning and Designing Institute Co. Ltd, Nanjing 210006, China
- PACS:
- TU352.1
- DOI:
- 10.3969/j.issn.1003-7985.2013.01.013
- Abstract:
- To develop a high performance buckling-restrained brace(BRB)with less weight, an innovative type of the BRB with transverse rib restraints is proposed and studied through experiment. Three BRB specimens are cyclically loaded in the investigation. Specimen 1 adopts a Q235 core member and transverse rib restraints. Specimen 2 adopts a LYP160 low yield point steel core member and transverse rib restraints. Specimen 3 adopts a LYP160 low yield point steel core member and mortar restraint. The experimental results indicate that the transverse rib restraining mode can provide sufficient lateral stiffness for the core member and effectively restrain its buckling. The BRB specimens with a LYP160 core member exhibit better hysteretic performance and energy dissipation capacity than the specimens with a Q235 core member.
- 为研发轻质高性能防屈曲支撑(BRB), 提出了一种新型横肋约束防屈曲支撑并对其进行了试验研究.对3组BRB试件进行了低周往复加载试验.试件1采用普通Q235钢核心单元, 并采用横向加劲肋约束;试件2采用LYP160低屈服点钢核心单元, 并采用横向加劲肋约束;试件3采用LYP160低屈服点钢核心单元, 并采用砂浆约束.试验结果表明, 横向加劲肋可以为核心单元提供足够的侧向刚度, 有效抑制核心单元的屈曲.采用LYP160低屈服点钢核心单元的BRB试件比采用普通Q235钢核心单元的BRB试件表现出更好的滞回性能和更强的耗能能力.
References:
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[6] Wen D H, Song F M, Liu Z C, et al. Manufacture and application of low yield point steel used for earthquake resistance [J]. Progress in Steel Building Structures, 2009, 11(5): 16-19.(in Chinese)
[7] Ministry of Housing and Urban-Rural Construction of People’s Republic of China. GB 50011—2010 Code for seismic design of buildings [S]. Beijing: China Architecture & Building Press, 2010.(in Chinese)
[8] Federal Emergency Management Agency. FEMA 450 NEHRP recommended provisions for seismic regulations for new buildings and other structures [S]. Washington DC, USA:Federal Emergency Management Agency, 2004.
[9] AISC/SEAOC. Recommended provisions for buckling-restrained braced frames [S]. AISC/SEAOC, 2001.
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Memo
- Memo:
-
Biography: Huang Zhen(1975—), male, doctor, associate professor, huangzhen@seu.edu.cn.
Foundation items: The National Key Technology R&D Program of China during the 12th Five-Year Plan Period(No.2012BAJ13B01), the Science and Technology Program of the Ministry of Housing and Urban-Rural Development(No.2011-K2-3), the Science and Technology Foundation of Southeast University(No.9205000034), the Priority Academic Program Development of Jiangsu Higher Education Institutions(No.CE01-2-09).
Citation: Huang Zhen, Li Zongjing, Ding Ting. Experimental investigation of BRB with transverse rib restraints[J].Journal of Southeast University(English Edition), 2013, 29(1):62-65.[doi:10.3969/j.issn.1003-7985.2013.01.013]