Experimental study on seismic performance of prefabricated buckling-restrained braces with end ductile casting connectors

被引：0
|
作者：
Yin Z. [1 ,2 ]
Xu D. [1 ]
Yang B. [1 ]
机构：
[1] School of Civil Engineering, Lanzhou University of Technology, Lanzhou
[2] Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2022年 / 43卷 / 01期
关键词：
Ductile casting connector; Low cyclic reversed loading test; Prefabricated buckling-restrained brace; Seismic performance;
D O I：
10.14006/j.jzjgxb.2020.0261
中图分类号：
学科分类号：
摘要：
The traditional welding connections between the brace and the frame in a concentrically braced frame (CBF) are easy to be damaged by brittle failure at the beam-column region, which makes the brace lose its energy-dissipation capacity. To solve the above problem, six sets of prefabricated buckling-restrained braces with end ductile casting connectors which can be connected with the frame using bolts were designed and tested under low cyclic reversed loading. The failure mode, stress distribution and hysteretic performance of the specimens were studied. The results show that the specimens have great bearing capacity and energy dissipation performance. It can achieve the 'two-stage' energy dissipation characteristic by locating inelastic deformation in the ductile casting connectors before the story drift ratio reaches 1/100 and then relying on BRB for energy dissipation, and the maximum story drift ratio of the frame can reach 1/39. The buckling-restrained brace with end ductile casting connectors connected with frame by bolts can relieve the stress distribution in the beam-column region. Furthermore, the ductile casting connectors and the BRB can be assembled and replaced after an earthquake. © 2022, Editorial Office of Journal of Building Structures. All right reserved.
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页码：77 / 85
页数：8
相关论文
共 18 条
  • [1] DONG Zhiqian, LI Gang, LI Hongnan, A simplified method for seismic performance evaluation of MDOF steel concentrically braced frames, Journal of Building Structures, 39, 5, pp. 1-9, (2018)
  • [2] REDWOOD R G, CHANNAGIRI V S., Earthquake resistant design of concentrically braced steel frames, Canadian Journal of Civil Engineering, 18, 5, pp. 839-850, (1991)
  • [3] CHENG Guangyu, YE Lieping, XU Xiuzhen, Et al., Experimental research on bucking-restrained brace, Journal of Building Structures, 29, 1, pp. 31-39, (2008)
  • [4] GATES W E, MORDEN M., Professional structural engineering experience related to welded steel moment frames following the northridge earthquake, The Structural Design of Tall Buildings, 5, 1, pp. 29-44, (1996)
  • [5] ENGELHARDT M D, SABOL T A., Seismic-resistant steel moment connections: developments since the 1994 Northridge earthquake, Progress in Structural Engineering and Materials, 1, 1, pp. 68-77, (1997)
  • [6] CLARK P, AIKEN I, KASAI K, Et al., Design procedures for buildings incorporating hysteretic damping devices, Proceedings of the 68th Annual Convention, pp. 355-371, (1999)
  • [7] YIN Zhanzhong, WANG Xiuli, Analysis of force restoring characteristics of buckling restraining braces formed with double-tube with contact ring, Journal of Lanzhou University of Technology, 36, 2, pp. 93-97, (2010)
  • [8] YIN Zhanzhong, CHEN Wei, CHEN Shenglin, Et al., Experimental study of improved double-tube buckling restrained braces, Journal of Building Structures, 35, 9, pp. 90-97, (2014)
  • [9] YIN Zhanzhong, ZHANG Sufeng, SUN Yuan, Et al., Experimental study of improved double-tube buckling restrained braces, Science Technology and Engineering, 16, 9, pp. 231-235, (2016)
  • [10] ZHANG Chenhui, DENG Changgeng, YING Wudang, Typical failure mode and ultimate bearing capacity of sleeved compression member under axial compression, Journal of Southeast University (Natural Science Edition), 49, 2, pp. 311-320, (2019)
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