Wind Resistant Analysis And Static Equivalent Wind Load Of Base-Isolated Structures

Base-isolation is an effective seismic passive control technology. With the economic development, base-isolated technology has been widely used in middle and even high-rise buildings. Theoretical and experimential researches about the seismic control effectiveness about the base-isolated structures have been done, but there is rare research about the dynamic response of base-isolated structures under the wind loads and equivalent static wind load of this type of structures. This paper is to analyze the dynamic response of isolated and non-isolated structures under wind loads and compute the equivalent static wind loads of the isolated structures with different methods.In this paper, the seismic reponse of a 12 storey building is computed using Ansys for the finite element models of base-isolated and non-isolated structures, and their responses are compared under eight-degree of earthquake intensity.To investigate the wind induced response of seismic base-isolated structures, the fluctuating wind speeds are simulated with Auto Regressive method, The responses of the base-isolated and non-isolated structures under the fluctuating wind loads was analyzed and compared.The static equivalent wind load methods are reviewed. The equivalent wind loads for base-isolated structures are calculated and compared with different methods.