RESEARCH ON EFFECTS OF WELDING SEAMS OF WELD ACCESS HOLE LINERS ON FRACTURE PROPERTIES OF STEEL FRAME BEAM COLUMN JOINTS

WANG Yan; LIU Kuikui; NI Yanshun; MOU Ben

doi:10.13204/j.gyjz202006022

Volume 50 Issue 6

Aug. 2020

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WANG Yan, LIU Kuikui, NI Yanshun, MOU Ben. RESEARCH ON EFFECTS OF WELDING SEAMS OF WELD ACCESS HOLE LINERS ON FRACTURE PROPERTIES OF STEEL FRAME BEAM COLUMN JOINTS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(6): 135-143. doi: 10.13204/j.gyjz202006022

Citation:

WANG Yan, LIU Kuikui, NI Yanshun, MOU Ben. RESEARCH ON EFFECTS OF WELDING SEAMS OF WELD ACCESS HOLE LINERS ON FRACTURE PROPERTIES OF STEEL FRAME BEAM COLUMN JOINTS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(6): 135-143. doi: 10.13204/j.gyjz202006022

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RESEARCH ON EFFECTS OF WELDING SEAMS OF WELD ACCESS HOLE LINERS ON FRACTURE PROPERTIES OF STEEL FRAME BEAM COLUMN JOINTS

doi: 10.13204/j.gyjz202006022

School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China

Received Date: 2019-11-30
Publish Date: 2020-08-20

Abstract

Abstract

Five high-strength steel T-stub connection specimens were designed, and the effect of welding seams of weld access hole liners on the fracture behaviors of beam-column joints was studied by loading and unloading cycle loading tests and finite element numerical analysis. Based on the research on T-stub connections, three specimens of steel frame beam-column joints were designed, and the fracture behaviors of beam-column joints was studied by the quasi-static loading test.The results indicated that welding seams of weld access hole liners of the high-strength steel T-stub connection had a significant effect on the fracture behaviors of the specimens. When weld access hole liners with double-sided weld or four-sided weld were adopted, the peak stresses in the welding seams could be moved to webs under ultimate loads. Compared with the specimens of the weld access hole liner with single-sided welding, the plastic deformation capacity of the specimens was improved significantly. The ductility and ultimate bearing capacity of steel frame beam-column joints were improved by changing the traditional weld of the weld access hole liner to double-sided or four-sided welding. Compared with the specimens of the weld access hole liner with single-sided weld, the ductility coefficients and ultimate bearing capacity of the specimens with double-sided weld increased about 29% and 23%, respectively; the ductility coefficients and ultimate bearing capacity of the specimens with four-sided welding increased about 70% and 33%, respectively.
- weld access hole liner,
- welding seam,
- T-stub connection,
- beam-column joint,
- fracture properties

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