Experimental study on cyclic tensile performance of tube column and H beam welded joint using Q460 high strength steel

被引：0
作者：
Liang G. [1 ,2 ]
Lu Z. [1 ]
Liu Y. [1 ,2 ]
Guo H. [1 ,2 ]
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
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 04期
关键词：
cyclic tensile test; energy-dissipating capacity; failure mode; high strength steel; welded joint;
D O I：
10.13465/j.cnki.jvs.2024.04.035
中图分类号：
学科分类号：
摘要：
To study the mechanical behavior of tube column and H beam welded joint with Q460 high strength steel (HSS) under earthquake, 11 specimens consisting of a flange plate of H-shaped beams that were welded to rectangular columns were tested under a cyclic tensile condition. The effects of the width ratio of the beam flange plate to the tube column, thickness ratio of the tube column on the failure mode, bearing capacity, ductility and energy dissipation capacity of the joint were studied. Results show that the failure modes of the tube column and H beam welded joint using Q460 HSS were mainly divided into three types after the cyclic tensile test: weld fracture at the connection, fracture failure of the tube column panel at the connection or tensile fracture of the beam flange. The width ratio a and the width thickness ratio A have a greater impact on the mechanical behavior of welded joints with HSS, when a decreases from 25. 0 to 18.75, the strain energy of the joint decreases by 134%. In addition, when a joint was damaged, the ultimate displacement of a welded joint with a new type of welded access hole construction is nearly two times greater than that of a traditional construction joint, and the former has better ductility. The results can provide a basis for seismic design and further theoretical research of tube column and H beam welded joint with HSS. © 2024 Chinese Vibration Engineering Society. All rights reserved.
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页码：303 / 313
页数：10
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