Open AccessExperimental Research on Mechanical Performance of New Modular Steel Frame Joint
Author(s) -
Peng Lin,
Cong Jun,
Lei Zhang,
Wenqiang Chen
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/820/1/012007
Subject(s) - stiffness , structural engineering , node (physics) , joint (building) , connection (principal bundle) , bearing capacity , displacement (psychology) , frame (networking) , materials science , rotation (mathematics) , modular design , engineering , computer science , mechanical engineering , artificial intelligence , psychotherapist , operating system , psychology
Aiming at the problems of large interlayer displacement angle and low rotational stiffness of modular steel frame connection nodes, a new type of grouted interlayer joint was proposed, and the experimental study was carried out to observe the failure form and mechanical performance of the node. In order to study the stiffness and bearing capacity characteristics of the new grouting interlayer connection, 4 different joint specimens were tested and studied. The influence of the bolt connection at the node on the bearing capacity, rotation stiffness and ultimate rotation capacity of the grouting node is analyzed. The test results show that the bolt connection can ensure the integrity of the node and improve the stiffness of the node; Whether the column is filled with concrete has little effect on the mechanical properties of bolted joints, but has a more obvious effect on boltless joints, and the initial stiffness is increased by 20%.