|Table of Contents|

Mechanical Performance of Beam-column Connection Joints with X-shaped Inserted Plate in Steel Structure(PDF)

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

Issue:
2022年05期
Page:
150-159
Research Field:
结构工程
Publishing date:

Info

Title:
Mechanical Performance of Beam-column Connection Joints with X-shaped Inserted Plate in Steel Structure
Author(s):
JIN Xing-fu1; 2;  WU Xiao-ming2;  CHEN An-ying1;  YUAN Rui1
(1. School of Civil Engineering, Hefei University of Technology, Hefei 230009, Anhui, China; 2. Economic Technology Research Institute, State Grid Anhui Electric Power Co., Ltd., Hefei 230061, Anhui, China)
Keywords:
beam-column connection joint;  X-shaped inserted plate;  bolted connection;  mechanical performance
PACS:
TU392.1
DOI:
10.19815/j.jace.2022.05027
Abstract:
In order to improve the installation and construction efficiency of the substation with beam-column bolt-welded joints, considering the mechanical performance characteristics of the steel structure of the substation, a new type of beam-column assembled joint with X-shaped inserted plate in steel structure was proposed to weld the steel plate at the column end in the 45 ° direction of the four corners of the square steel tube column, and the steel plate at the beam end was welded at the end of the steel beam, then the steel plate at the beam end and the steel plate at the column end were connected by high-strength bolts. Four joint models with different steel plate thicknesses and bolt diameters were designed and mechanical property tests were carried. The joint model was established by ABAQUS software and the accuracy of the model was verified. Based on the finite element model of the joint, the influence of the thickness of the steel plate at the column end and the number of bolts on the mechanical performance of the joint was analyzed. The results show that the joint failure mainly occurs at the weld joint between the steel beam and the steel plate at the beam end. Increasing the thickness of beam-end steel plate and the diameter of bolt can significantly improve the rotational stiffness and bearing capacity of the joint, and the joint is still semi-rigid joint. Increasing the thickness of the column end steel plate and the number of bolts can reduce the damage of the column end steel plate, but it has little effect on the damage of the beam end steel plate. At the same time, increasing the number of bolts can also improve the bearing capacity of the joint.

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Last Update: 2022-09-30