Seismic Performance Improvement of Adjacent Tall Buildings by Using Composite Tuned Mass-Damper-Inerter

This paper investigates the building vibration control problems for controlling seismic response of adjacent tall buildings based on the inerter, where the Composite Tuned Mass-Damper-Inerter passive control device is used. The force between the adjacent tall buildings is proportional to the acceleration of the device within CTMDI. It can considerably improve the stability of the adjacent tall buildings. The controller is a mechanical network based on the inerter that is created using both the network synthesis method and the fixed-structure method. First, the CTMDI is installed in the adjacent tall buildings, which are connected by the overbridge supported by rollers. Subsequently, the differential equations of vibration of the CTMDI-linked adjacent tall buildings are established. After analysing the differential equation of vibration, the state-space equation of adjacent tall buildings is obtained with the mode decomposition method. A global optimization method can be used to formulate and solve an optimization problem utilizing the given performance objective functions to determine the optimal parameters. After analysing the effectiveness of different passive mechanical networks of the fixed structure method, it is found that one mechanical network can better reduce the adjacent tall buildings’ top floor displacement. Finally, the better passive controllers are designed by applying the method of network synthesis.