Optimum Installation of Viscous Liquid Dampers in High-Rise Buildings

Abstract eng:
Viscous liquid dampers can be installed in high-rise buildings of high intensive seismic regions to reduce their responses under earthquake. The placements of dampers are limited by some factors, such as architectural space distributions and actual results of energy dissipation. A real high-rise building with strengthened storeys and abrupt changes of vertical stiffness in a high intensive seismic region is brought as an example to discuss the strategy for optimum installation of viscous liquid dampers. Storey displacement angles and bottom shear are set up as optimizing targets and through several cases of different locations and quantities of dampers the optimal strategy of viscous liquid dampers is put forward. The simulation of a finite element model for this actual high-rise building with strengthened storeys draws the conclusion that storey displacement angles and bottom shear of this building with dampers both decline obviously and effects of seismic energy dissipation are nicer. This optimal strategy for dampers is practical.

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