PROPER PLACEMENT OF ENERGY ABSORBING DEVICES FOR REDUCTION OF WIND-INDUCED VIBRATION CAUSED IN HIGHRISE BUILDINGS

The passive energy absorbing device such as a storey-installation type damper will be the most ideal device in the case of reducing the stru ctural responses of high-rise or slender buildings against the various levels of inputs from traffic induced vibration to destructive vibrat ion. However, the optimal placement methods for distributing these typ es of dampers to each storey have not yet been established. This study applies a genetic algorithm to obtain a proper placement of the dampe rs in each storey of the building. In this paper, the proper placement in a 40-storey building model in which the strong wind is induced to the building is investigated. The proper placement in this study will satisfy the evaluation condition such as a vibration control effect, a n economical effect and a damper performance for arranging the damper in each storey. (C) 1998 Elsevier Science Ltd. All rights reserved.