Reduced load and structure models via inverse formulation for time-history wind response analysis of high-rise buildings

Abstract

A set of reduced models of structures and wind loads is proposed for a high-rise building under time-dependent wind loading. A reduced structural model is constructed first based on an inverse problem formulation in terms of fundamental eigenfrequeney and eigenmode. Then a reduced model of time-dependent wind loads is proposed by requiring the equisalenee of displacements at representative nodes in the frame model and the reduced model without inertial and damping terms. These reduced models are applied to both the bare frame and the frame with high hardness rubber dampers. The validity of the proposed reduced models is insestigated by the comparison with the results by the time-history analysis for an original full model.