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CLC number: TV5

On-line Access: 2017-12-05

Received: 2017-07-13

Revision Accepted: 2017-08-13

Crosschecked: 2017-11-17

Cited: 0

Clicked: 2573

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.12 P.927-941

http://doi.org/10.1631/jzus.A1700358


Seismic behaviour of an earthquake-resilient prefabricated beam-column cross joint


Author(s):  Ai-lin Zhang, Ying-xia Wu, Zi-qin Jiang, Xu-qiao Zhang, Chao Dou

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

Corresponding email(s):   jzqbj2010@163.com

Key Words:  Earthquake-resilient, Flange cover plate, Weakening profile, Design theory, Hysteretic behaviour


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Ai-lin Zhang, Ying-xia Wu, Zi-qin Jiang, Xu-qiao Zhang, Chao Dou. Seismic behaviour of an earthquake-resilient prefabricated beam-column cross joint[J]. Journal of Zhejiang University Science A, 2017, 18(12): 927-941.

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author="Ai-lin Zhang, Ying-xia Wu, Zi-qin Jiang, Xu-qiao Zhang, Chao Dou",
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year="2017",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1700358"
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%T Seismic behaviour of an earthquake-resilient prefabricated beam-column cross joint
%A Ai-lin Zhang
%A Ying-xia Wu
%A Zi-qin Jiang
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%A Chao Dou
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%DOI 10.1631/jzus.A1700358

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T1 - Seismic behaviour of an earthquake-resilient prefabricated beam-column cross joint
A1 - Ai-lin Zhang
A1 - Ying-xia Wu
A1 - Zi-qin Jiang
A1 - Xu-qiao Zhang
A1 - Chao Dou
J0 - Journal of Zhejiang University Science A
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1700358


Abstract: 
earthquake-resilient structures have become a hot topic in seismic research. Based on the concept of damage control, this paper presents a new type of earthquake-resilient prefabricated beam-column cross joint (ERPCJ). After a strong earthquake, the function of the joint can be quickly restored because damage is concentrated mainly on replaceable connecting parts. First, the construction and advantages of the ERPCJ are explained, and its seismic design requirements are established. Then, the theory behind the design of the ERPCJ is proposed and verified by numerical simulation using eight ERPCJ models. The hysteretic behaviour of the ERPCJ was investigated using the finite element (FE) method considering the effects of the weakening profile in the flange cover plate, the thickness and strength of the flange cover plate, the distance between the middle bolts, the gap between the beams, and the bolt hole shape. Finally, cyclic loading and repairing tests were conducted on a basic specimen, and the rationality of the design theory was verified. The seismic performance and the post-earthquake resilience performance of the joint were investigated. Numerical analysis and experiments showed that the proposed design theory could accurately predict the yield load of the ERPCJ. A reasonably well-designed ERPCJ should have good bearing capacity, collapse resistance capacity, seismic performance, and post-earthquake resilience performance. The thickness and strength of the flange cover plate, the distance between the middle bolts, and the gap between the beams have a large effect on the seismic behaviour of the joint, and so should be properly designed.

可恢复功能装配式梁柱中柱节点抗震性能研究

目的:提出一种震后功能可快速恢复的装配式中柱节点,并建立其设计理论;考察装配式中柱节点的抗震性能及震后修复性能,并提出设计建议。
创新点:提出一种可快速恢复震后功能的装配式中柱节点;2. 提出装配式中柱节点设计理论,并通过数值手段对其合理性进行校核;3. 试验研究考察基础试件的抗震性能及震后修复性能。
方法:1. 通过理论分析手段建立装配式中柱节点设计理论;2. 利用数值模拟手段通过4组8个算例来验证节点设计理论,并对节点抗震性能进行数值研究;3. 对基础试件进行低周往复荷载试验研究及修复试验研究,进一步验证设计理论的合理性,并考察节点的抗震性能及震后修复性能。
结论:1. 提出的设计理论可准确地预测装配式中柱节点的屈服荷载;2. 设计合理的装配式中柱节点具有良好的承载性能及滞回特性,可满足结构震后功能修复要求;3. 翼缘连接盖板厚度和材性、中间螺栓间距和梁段间隙参数对节点抗震性能影响较大,需合理设置。

关键词:可恢复功能;翼缘盖板连接;狗骨削弱;设计理论;滞回性能

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