Abstract
A stiffness design method is developed for a shear building with prescribed viscous and/or viscoelastic dampers such that every peak interstory drift would coincide with the specified value. The method consists of the calculation of the peak interstory drift and its sensitivity, and the revalidation of the design variables, respectively based on the Complete Quadratic Combination (CQC) method and the extended Kalman filter theory. Twenty-story shear building models are designed by the developed method on the conditions of different weight and damper distributions. The validity and accuracy of the proposed method are demonstrated by the time-history response analyses on the designed models subjected to a design-spectrum-compatible ground motions. The results indicate that this method is useful in case the damping factor of the structural system is less than 20%.
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