Research purposes:To improve the deformation capacity and construction efficiency of center columns in assembled subway stations,a mortise-and-tenon prefabricated column end connection was proposed.In this paper,ABAQUS finite element software was used to analyze the damage mode,force mechanism and seismic performance of prefabricated column end connections,and to compare the difference in dynamic response between assembled subway stations with mortise-and-tenon prefabricated column end connections and cast-in-place subway stations under seismic action.Research conclusions:(1)The tenon-bolt column end joints have better load carrying capacity,deformation capacity,and energy dissipation capacity,and better seismic performance.(2)Compared with cast-in-place subway stations,the structural interstory displacement angle of the assembled subway station with tenon-bolt column end joints increases slightly,but the tensile damages of the center columns and the connection of the top base plate with the side walls are smaller.(3)The design of tenon-bolt joints effectively enhances the center columns and the connection of top base plate with side walls by releasing some of the column bottom constraints,which effectively improves the safety of the center column and enhances the collapse resistance of the structure.(4)The results of this paper have reference value for the application and promotion of dry prefabricated column end connections in subway stations.
关键词
地铁车站/装配式柱端节点/抗震性能/动力响应/数值模拟
Key words
subway station/prefabricated column end joints/seismic performance/dynamic response/numerical simulation
维普
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