A simplified prediction method of the wind-induced response for a high-rise isolated building with steel dampers by using “Recommendations for Loads on Buildings”

Abstract

In recent years, seismic isolation structures have been adopted for high-rise buildings. In accordance with its highness, the wind load becomes larger than seismic load relatively. So, wind force increases the amount of isolation-layer deformation. Therefore, there is concern that the response of isolation-layer may extend to the plastic range. However, the current wind load design in Japan is based on only elastic response of structure. In addition, it is difficult and impractical to estimate the response by time history response analysis for elastic-plastic response. That’s why it is necessary to develop a stochastic method to predict elastic-plastic wind induced response. This paper proposes a simplified prediction method of the elastic-plastic wind-induced response for a high-rise isolated building with steel dampers by using ““Recommendations for Loads on Buildings””, and its accuracy is verified by comparison with results of time history response analysis.