Open AccessStudy on Mechanical Properties of Weakened Steel Frame Joints at Beam Ends
Author(s) -
Jing Ji,
Runbao Zhang,
Zhihui Li,
Mi Xu,
Liangqin Jiang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/546/4/042066
Subject(s) - structural engineering , joint (building) , finite element method , frame (networking) , beam (structure) , displacement (psychology) , stress (linguistics) , foundation (evidence) , materials science , engineering , mechanical engineering , psychology , linguistics , philosophy , archaeology , psychotherapist , history
In order to study the hysteretic properties of steel frame T-shaped weakened joints, 12 groups of steel frame weakened joints and 1 group of common joints are designed with the weakened form, the weakened diameter and the distance from the weakened center to the column end as the parameters. Based on simplified mechanical model and material constitutive relationship, the finite element model is established by ABAQUS software to analyze the hysteretic properties of the joint specimen. By comparing with the existing test results of the weakened joint, both have a good agreement, and the rationality of the finite element model is verified. The simulation analysis of the weakened joints of the beam webs is carried out in the further and the load-displacement hysteretic curves are extracted as well as skeleton curves and stress cloud diagram of the joints. The influence rules of the weakened form, weakened diameter and weakened distance from the center to the column end on the seismic performance of the joints are obtained, and the design suggestions for the weakened joints are put forward. These can lay a foundation for time-history analysis of the frame structure with this kind of joints.