03.31: Influence of design parameters on mechanic behavior of prefabircated self‐centering beam‐column connection with a bolted web friction device

Abstract

ABSTRACTA new prefabricated self‐centering beam‐column connection (hereafter known as PSCC) using the bolted web friction devices has been proposed. The connection can avoid the on‐site aerial tension for high‐rise buildings. Experimental study and the numerical simulation have been carried out to investigate the mechanic performance of PSCC. In this thesis, on the basis of coincidence of experimental results and numerical simulation analysis results, the panel zone strength, the cable forces are selected as parameters to investigate initial stiffness, gap‐opening stiffness, imminent moment of gap‐opening, maximum gap‐opening moment, cable forces of the connection of the new type PSCC under various working conditions through the finite element software ABAQUS. From the FEA results, it can be verified that initial stiffness, gap opening stiffness, critical moment and cable force increases with the development of the panel zone strength, the energy dissipating coefficient not change much. The plasticity in panel zone decreases, but the minimum plastic development in flanges and webs of the short‐beam portions occur in the connection with medium panel zone strength. Additionally, increase of the cable forces are identified to have influence on developing the initial stiffness, gap opening stiffness, critical moment, while it may decrease the dissipating coefficient, and develop the plasticity in main parts of PSCC. The parametric analysis can lay foundation for the further performance based design towards PSCC.