Influence of Wind Speed and Wind Direction Change on Residual Deformation of Isolation Layer

Abstract

In recent years, the base-isolated system has been applied to more and more tall buildings. However, as the building gets taller, wind force may increase, which may lead to the residual deformation occurred in the isolation layer because of the plasticized steel dampers. When evaluating the residual deformation of the isolation layer, it is not enough to use the 10-minute wind force with no change in wind speed and wind direction as introduced in the existing wind-resistant design. In the case of a typhoon considering wind speed and wind direction change, because of the wind force against the isolation layer deformation, overestimation on the residual deformation may occur if the 10-minute wind force is used. Therefore, by numerical studies on a MODF model, this paper focuses on the residual deformation of the isolation layer in typhoon simulation to provide useful information for practical design.