Vibration control of high-rise building via feedback simulation based control utilizing the virtual structural model

Abstract

In Japan, large number of technologies have been developed to prevent damages of structures from large earthquakes. However, recently not a few building owners request vibration control of their office buildings not only for large earthquakes but also for relatively small earthquakes in order to keep comforts of the buildings. In this study, a new type of Active Mass Damper (AMD) system is developed, which is specialized for small and medium-sized earthquakes. In this AMD system, a feedforward controller is equipped, which implements feedback control simulation using a numerical model of the building and measured earthquake acceleration of the ground. By using this controller, higher vibration modes can be suppressed without control instability. In this paper, effectiveness of the proposed AMD system is verified through hybrid dynamic testing, then the system is applied to a real building. The results are discussed for these experiments.