Abstract：A new fabricated semi-rigid beam-to-column connection assembled with precast column and beam by high-strength bolts is proposed, aiming to repair the damage connection by displacing the bolts after earthquake. A full-scale component was fabricated and tested to analyze its loading capacities and energyabsorption performances under low cyclic reversed loading. A numerical model was also established to study the stress distribution and loading capacities in the core zone. By comparing with the experimental results of existing cast-in-site connections and the numerically simulated ones, the text results show that cracks emerge mainly in core zone, damage focuses around the end of T-shaped beam while there are almost no cracks in tail beam zone. The end of precast column and its bracket are intact. The proposed connection meets the strong-column-weak-beam design requirement. Compared with the cast-in-site connection, the proposed connection has higher yield strength and ultimate strength under low cyclic loading and better performances of loading and energy-absorption. The simulation results show that high strength bolts are main bearing member and precast beam and column are secondary bearing members in period of service, which meets the design purpose.
丁克伟 刘建华 马巍 刘运林. 新型装配式半刚性节点抗震性能试验研究[J]. 土木工程学报, 2021, 54(4): 1-7, 56.
Ding Kewei Liu Jianhua Ma wei Liu yunlin. Experimental study on seismic performances of a new #br#
type of fabricated semi-rigid beam-to-column connection. 土木工程学报, 2021, 54(4): 1-7, 56.
