Experimental study on seismic behavior of extended stiffened end-plate bolted connections using Q690 high strength steel

被引：0
|
作者：
Liang G. [1 ,2 ]
Guo H. [1 ,2 ]
Liu Y. [2 ,3 ]
Yang D. [1 ]
机构：
[1] School of Civil Engineering and Architecture, Xi'an University of Technology, Xi'an
[2] State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an
[3] School of Water Resources and Hydropower, Xi'an University of Technology, Xi'an
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2022年 / 43卷 / 03期
关键词：
Calculation model; Energy dissipation capacity; Extended stiffened end-plate bolted connection; Q690 high strength steel; Quasi-static test; Rotation capacity; Yield mechanism;
D O I：
10.14006/j.jzjgxb.2020.0336
中图分类号：
学科分类号：
摘要：
To study the seismic performance and design method of extended stiffened (ES) end-plate bolted connections using high strength steel (HSS), three Q690 HSS ES end-plate bolted joints with different yield mechanisms were designed based on component method in EC3 code and synchronous plastic design concept. The failure mode, stiffness, bearing capacity, energy dissipation capacity and strain distribution of the joints were studied by low cyclic loading test, and the validity of the capacity design calculation model was further verified. The test results show that the energy dissipation zone of high strength joints is mainly concentrated in the weakened area of the beam flange, while the energy dissipation zone of equal-strength joints is mainly distributed in the end-plate connection and the weakened area of the beam flange, both of which are attributed to the ductile failure mode. The partial-strength joints only rely on the continuous expansion and closure of the weld crack between the end-plate and the beam flange, as well as the limited plastic deformation of the end-plate to dissipate the seismic energy, which is attributed to brittle failure mode. The failure mode, yield mechanism and energy dissipation capacity of the joint are closely related to the capacity design parameters. The capacity design calculation model of the Q690 HSS ES end-plate bolted joint based on the component method in EC3 code could accurately predict the failure mode, but the reasonable parameters need to be further studied. © 2021, Editorial Office of Journal of Building Structures. All right reserved.
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页码：57 / 67
页数：10
相关论文
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