Investigating of the behavior of steel beam connection with reduced wing by drill, to the reinforced concrete column

Document Type : Research Article

Authors

1 Assistant Professor, Department of Civil Engineering, Khomein Branch, Islamic Azad University, Khomein, Iran

2 M.Sc., Department of Civil Engineering, Khomein Branch, Islamic Azad University, Khomein, Iran

Abstract

Special mixed bending frames are a new type of special bending frames that use a combination of concrete columns and steel beams. In this research, the modeling of these frames and also the effect of the connection behavior between the steel beam and the concrete column have been investigated. In addition, because the purpose of the study is more on hinge formation, Attempts have been made to investigate the behavior of this type of connection by drilling holes in the wing beam. Abaqus software has been used for modeling. To connection one, two, three to five rows of holes are considered. Examining the results, it was observed that three rows of holes in the connection of the beam to the column are more suitable than other holes in terms of joint formation, stress distribution and forces. In five rows of holes, plastic strain up to row four is observed and in the fifth hole, plastic strain is not formed, which indicates that the drilling distance has increased and this hole has no effect on more uniform stress distribution. Examining the quantitative and numerical results of the models, it is observed that the range of bending moment changes has been from about 8% to 46%, and in the model with three rows of holes, the least amount has occurred and in the model with one row, the most moments have occurred. Energy absorption has also varied in the range of 4 to 20%

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