1211 MRダンパを用いた4棟連結高層ビルのセミアクティブ制御(建築・都市のモニタリングとリスク制御(1))

Abstract

This paper presents a vibration control method for multiple high-rise buildings against large earthquake motion. In recent years, the connected control method (CCM) has attracted attention as a new control method for vibration of high-rise buildings. This method utilized the interaction forces among buildings as control forces. Larger control force compared with TMD is available in this method. However, CCM requires huge control force to suppress large earthquake excitations. Therefore, semi-active control is more preferable for practical CCM systems. MR dampers are used as actuators of semi-active control. By introducing semi-active control, it is able to control vibrations of super tall buildings against the strong wind and large earthquake. The effectiveness of CCM in one-dimensional vibration has already been established using two building structures arranged in parallel. To confirm the effectiveness of CCM in two-dimensional vibration, we introduced four building structures arranged in square as a control object so that two-dimensional (x-y) vibration control experiment can be performed. In this paper, LQ control theory is used to design control system. Based on the LQ controller, semi-active controller is obtained by applying so-called "clipping" . Using this method it is confirmed that the semi-active control has a vibration control performance as well as active control.