|Table of Contents|

Tensile performance test and failure mode of steel plate-steel bar welded joint(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2025年03期
Page:
1-14
Research Field:
建筑结构
Publishing date:

Info

Title:
Tensile performance test and failure mode of steel plate-steel bar welded joint
Author(s):
ZHU Weiqing;  DOU Tongyu;  SUN Jinghang;  WEI Lixin;  QI Jiaxuan;  YANG Cheng
(School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China)
Keywords:
steel plate-steel bar welding;  welded joint;  tensile property;  failure mode;  ABAQUS;  finite element verification
PACS:
TU398
DOI:
10.19815/j.jace.2024.06088
Abstract:
In order to investigate the tensile performance and failure modes of these joints, 10 sets of steel plate-steel bar welded joint specimens were fabricated and subjected to uniaxial tensile tests. The effects of steel bar diameter, steel plate thickness, steel plate width, and lap length on the bearing capacity and failure modes of the specimens were analyzed. Additionally, the stress distribution along the longitudinal direction of the steel bars and both longitudinal and transverse directions of the steel plates was examined, then the test results were simulated by using ABAQUS software. The results indicate that when the width of the steel plate is 50 mm, the thickness of the steel plate increases from 10 mm to 12 mm, and the failure mode changes from steel plate tearing to steel bar fracture, and the width and thickness of the steel plate have a great influence on the failure mode. When the lap length is less than or equal to 30 mm, the weld will tear with the steel plate. The bearing capacity of the welded joint increases with the increase of the diameter of the steel bar, the thickness of the steel plate, the width of the steel plate and the lap length, and the thickness of the steel plate has the greatest influence on the bearing capacity of the joint. The overall change trend of the strain at the same measuring point of the steel bar gradually decreases with the increase of the diameter of the steel bar, while the other parameters are opposite. The overall change trend of the strain at the same measuring point of the steel plate gradually increases with the increase of the width of the steel plate, while the other parameters are opposite. Along the direction from the test end to the fixed end, the tensile stress on the steel bar and the weld gradually decreases, and the tensile stress on the steel plate gradually increases. Along the transverse direction of the steel plate, the stress on the steel plate gradually decreases from its axis to both sides of the edge. The finite element simulation results are in good agreement with the test failure mode and load displacement curve, and the finite element simulation method is reliable.

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Last Update: 2025-06-01