Abstract：Low-frequency cyclic loading and monotonous loading tests were conducted on specimens of prefabricated outer sleeve-overhang plate joints were applied by. The mechanical properties, failure modes, bearing capacity, energy dissipation capacity, ductility and stiffness degradation of the joints were analyzed. The research results show that the initial rotational stiffness of joints increases with the thickness of the outer sleeve. When the wall thickness increases from 12mm to 14mm, the initial rotational stiffness is increases by about 17%. Increasing thickness of the outer sleeve delays the stiffness degradation of the joint. Prefabricated outer sleeve-overhang plate joints can increase energy dissipation and deformation. Mutual pull bolt connecting the beam and the column can induce “mutual pull effect”, making nodes rotate easily. Each specimen angle is more than 0.035rad, which can satisfy the strong joint and rotation capacity in case of strong earthquake. But too significant “mutual pull effect” can make nodes slide so that hysteretic loop changes from “bow” shape to “anti S” shape, decreasing the node energy dissipation. The stiffness and energy dissipation of joints can be increased by choosing right diameter of the bolt and thickness of the outer sleeve, controlling the extension of mutual pull bolt and reducing the processing gap between outer sleeve and column in design.
杨松森 王燕 马强强. 装配式外套筒-加强式外伸端板组件梁柱连接节点抗震性能试验研究[J]. 土木工程学报, 2017, 50(11): 76-86.
Yang Songsen Wang Yan Ma Qiangqiang. Experimental study on seismic behavior of prefabricated outer sleeve-overhang plate joint between column and beam. 土木工程学报, 2017, 50(11): 76-86.
