Effect of Butt Weld Construction on Fracture Properties of High Strength Steel Beam-column Joints(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年04期
- Page:
- 45-53
- Research Field:
- Publishing date:
Info
- Title:
- Effect of Butt Weld Construction on Fracture Properties of High Strength Steel Beam-column Joints
- Author(s):
- WANG Yan; YANG Fan
- School of Civil Engineering, Qingdao University of Technology
- Keywords:
- Q460 high-strength steel; butt weld; beam-column joint; fracture property; experimental research; lining plate
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to study the effect of butt weld construction on the fracture properties of Q460 high-strength steel beam-column joints, 4 different construction forms of butt weld joint specimens were designed for loading test. The bearing capacity, deformation capacity, failure mode and other properties were studied by cyclic loading. The fracture properties of joints with different weld constructions were compared and analyzed. The joint specimens of the lining plate double-side weld construction were deeply studied. The influences of the distance of lining plate double-side welds on the fracture properties of joints were analyzed. The results show that the flange butt weld construction forms have certain influence on the fracture properties of specimens. The lining plate double-side weld construction form can enhance the strength of weld area, and the fracture failure of weld and heat affected zone can be avoided. The fracture area of specimen is moved to the base metal area, and the fracture resistance of specimen is strong. The lining plate with double-side weld construction form has little effect on the bearing capacity of specimen, and has great influence on the deformation ability of specimen. Compared with the lining plate with unilateral weld, the bearing capacity and deformation are increased by 3.3%, 31.9% respectively. Increasing the distance of lining plate double side welds is helpful to strengthen the strength of weld area. It is suggested that under the premise of construction permit, the width of lining plate should be increased appropriately, and the possibility of cracking and failure of welds will be reduced.
Last Update: 2018-07-18