Enhancing the Seismic Performance of Adjacent Building Structures Based on TVMD and NSAD

Abstract

Under the action of an earthquake, the adjacent building structure will have a large displacement and even cause damage to the structure. Structure displacement can be suppressed by adding a tuned viscous mass damper (TVMD) and negative stiffness amplifier damper (NSAD) between adjacent structures. This paper deduces the motion equation of adjacent building structures under earthquake action. The transfer function of the vibration control system is obtained using Laplace transform. The parameter optimization analysis of the structural vibration control system is carried out through H2 norm theory. The vibration control performance of the TVMD vibration control system and NSAD vibration control system is studied by taking two adjacent building structures composed of single freedom building structures as an example. The results show that the two vibration damping devices proposed in this paper can play the role of vibration control. The influence of the same parameters on the two structures is not completely consistent. Under seismic excitation, the NSAD control system has better displacement control ability than the TVMD control system.

Parameter optimization of vibration control system for adjacent building structures based on negative stiffness inerter damper

“…Dampers with negative stiffness behavior have been widely investigated for structural vibration control due to their superior performance. Negative stiffness elements can reduce the apparent stiffness of the whole system, thus reducing the base shear and peak acceleration of the structure 54 , 55 . The combination of negative stiffness element and inerter enhances the energy dissipation capacity of the damper effectively, and different combinations of the two elements show different seismic isolation performance 56 , 57 .…”

Formulation of Separation Distance to Mitigate Wind-Induced Pounding of Tall Buildings

“…Due to structural sway in tall buildings, lateral deflection can damage the non-structural elements (i.e., cladding and partition) and main structural components to the extent of damaging possible adjacent structures [34,40,41]. Large levels of deflection in tall structures can be mitigated appropriately through structural design measures or by introducing external deflectionmitigation systems (e.g., dampers) [13,[42][43][44][45].…”