不规则高层结构基于新型电磁惯性质量阻尼器的半主动控制

Semi-active Control of Irregularly Reinforced High-rise Building Structure with Electromagnetic Inertial Mass Dampers

为了研究新型电磁惯性质量阻尼器(Electromagnetic Inertial Mass Damper,EIMD)应用于偏心高层结构振动控制工程的可行性,鉴于半主动控制技术的优点,基于LQR主动控制算法,提出一种可行的EIMD-偏心高层结构半主动控制策略,同时研究EIMD在结构每层中安装位置不同对于控制偏心高层结构扭转反应的影响。以一个实体24层偏心高层结构作为研究对象验证地震作用下所提控制策略的有效性,仿真结果表明:(1)所提半主动控制策略基本能够达到主动控制对于结构振动反应分量的控制效果;(2)当采用半主动控制策略时,调整EIMD的安装位置对于偏心高层结构转角和转角加速度反应有着较好的控制效果。

In this paper,a novel electromagnetic inertial mass damper(EIMD)is applied to realize the practical semi-active control of a real-life eccentrically braced high-rise building structure subjected to outward dynamic loads such as earthquake.Then,we present a feasible semi-active control strategy based on a linear quadratic regulator(LQR)active control algorithm.The coupled torsional responses of the structure with EIMDs are analyzed at different EIIMD installation positions.Finally,the feasibility and effectiveness of the new control strategy is demonstrated by its application to a real-life 24-story irregularly reinforced concrete frame-shear wall structure with EIMDs,for which the El Centro earthquake records are considered.The simulation results show that(1)the proposed semi-active control strategy is effective and feasible compared with the traditional active LQR control method,and(2)the torsional angle and torsional angle acceleration responses of the structure are obviously suppressed by optimizing the installation positions of the EIMDs.