Abstract：A quasi-static loading test on seismic behaviors of the prefabricated beam-to-column high-strength bolted joint with external diaphragms was conducted.The failure mode, hysteretic curve, skeleton curve, ductility, energy dissipation and stiffness degeneration were analyzed.The influences of structural parameters on seismic behavior of joint specimen were also discussed.The story drift and rotational capacity of joint specimen were analyzed.Consequently, a hysteretic model of the joint was proposed.Results indicate that three failure modes may develop in joint specimens, namely shearing failure of connecting bolt between external diaphragm and flange of bolt, tensile failure of flange of beam, and weld failure at connection between the external diaphragms and column.The hysteretic curves of joint specimens appear to be “Z-shape” with great area, implying their strong energy dissipation capacities.The 4 joint specimens suffer from significant stiffness degeneration with gentle descending gradient.The story drifts of 4 joint specimens varies in the range of 0.09～0.12 rad which exceed the requirements in seismic code, reflecting good rotational capability and ductility of the proposed joint.Seismic behaviors of the joint can be influenced to some extent by the thickness and width of external diaphragms.The resilience calculation model of the proposed joint agrees well with test curves of joint specimens.
王修军 王燕 安琦. 装配式梁柱外环板高强螺栓连接节点#br#
抗震性能试验研究[J]. 土木工程学报, 2020, 53(6): 53-63, 78.
Wang Xiujun Wang Yan An Qi. Experimental study on seismic behavior of prefabricated beam-to-column#br#
high-strength bolted joint with external diaphragms. 土木工程学报, 2020, 53(6): 53-63, 78.
