Seismic Performance Analysis of a Connected Twin-Tower Structure Connection Mode

In order to determine the connection scheme of the high-level connection of a connected twin-tower structure, four models of different connection forms are established. Model I is rigidly connected to both ends of the tower. Model II is hinged with tower A and rigidly connected with tower B. Model III is slidingly connected with tower A and rigidly connected with tower B. Model IV is hinged with both ends of the tower. The elastic dynamic time-history analysis of structures of four different connection modes under earthquake action is carried out in ABAQUS. The results show that the connection mode of rigid connection at both ends under earthquake can not only reduce the structural displacement, but also realize the stiffness coordination between towers, and has the smallest the Inter-story Drift Ratio and vertex displacement, and the maximum displacement of key beam-column joints is small, and the damage of each connection mode is similar. Therefore, for the connected twin-tower structure, the rigid connection at both ends of the high-position connection is more favorable to the overall structure.