Full Text:   <671>

Summary:  <315>

CLC number: TU391

On-line Access: 2017-01-03

Received: 2016-06-30

Revision Accepted: 2016-11-09

Crosschecked: 2016-12-13

Cited: 2

Clicked: 1683

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Zi-qin Jiang

http://orcid.org/0000-0001-9613-3972

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Journal of Zhejiang University SCIENCE A 2017 Vol.18 No.1 P.20-32

http://doi.org/10.1631/jzus.A1600483


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


Author(s):  Zi-qin Jiang, Yan-lin Guo, Ai-lin Zhang, Chao Dou, Cai-xia Zhang

Affiliation(s):  College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China; more

Corresponding email(s):   jzqbj2010@163.com

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


Zi-qin Jiang, Yan-lin Guo, Ai-lin Zhang, Chao Dou, Cai-xia Zhang. Experimental study of the pinned double rectangular tube assembled buckling-restrained brace[J]. Journal of Zhejiang University Science A, 2017, 18(1): 20-32.

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author="Zi-qin Jiang, Yan-lin Guo, Ai-lin Zhang, Chao Dou, Cai-xia Zhang",
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volume="18",
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year="2017",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1600483"
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T1 - Experimental study of the pinned double rectangular tube assembled buckling-restrained brace
A1 - Zi-qin Jiang
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A1 - Cai-xia Zhang
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DOI - 10.1631/jzus.A1600483


Abstract: 
In this study, seven pinned double-rectangular tube assembled buckling-restrained brace (DRT-ABRB) specimens were experimentally characterised 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.

Seven pinned DRT-ABRBs were studied in this paper using axial cycle tests to understand the influence of external cover plate thickness, core wing plate height, external channel flange height and other parameters on the failure mechanism and the energy dissipation performance of the BRBs. The rationality of the end construction details was verified and the DRTABRB energy dissipation performance was determined.

铰接双矩管装配式防屈曲支撑试验研究

目的:通过双矩管装配式防屈曲支撑的滞回试验研究,探讨防屈曲支撑可能存在的破坏模式及各设计参数对支撑耗能性能的影响,验证支撑端部构造细节的合理性,提出支撑设计建议。
创新点:1. 试验研究铰接双矩管装配式防屈曲支撑的滞回性能;2. 获得4种支撑破坏模式。
方法:通过对7根铰接双矩管装配式防屈曲支撑的滞回性能试验,研究支撑外围盖板厚度、内核加强翼板高度和外围槽钢翼缘高度等参数对防屈曲支撑破坏机理及耗能性能的影响。
结论:1. 外围盖板厚度太薄,支撑易发生端部折曲破坏;2. 端部转动受限制的支撑,其滞回性能优于纯铰接防屈曲支撑,但支撑连接节点处的附加弯矩不容忽视;3. 支撑均表现出优良的屈曲耗能性能,验证了试验试件端部构造细节的合理性。

关键词:双矩管装配式防屈曲支撑;端部构造;滞回性能;破坏模式;高强螺栓

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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