耦联结构体系的半主动控制

SEMIACTIVE CONTROL FOR COUPLED BUILDINGS

基于变刚度和变阻尼的原理提出两种用于耦联结构体系的半主动控制装置,在建立这两种半主动控制时耦联结构振动控制体系的运动方程的同时,还提出一种新的广泛适用于一般开关控制型半主动控制系统的控制算法,推导出两种半主动控制的开关控制律,并对结构的动力参数对控制效果的影响规律进行研究。为检验所提出的两种半主动控制装置及新半主动控制算法的有效性,针对不同的算例进行了计算机仿真分析。结果表明,对两相邻结构进行控制是必要的和有效的,所提出的两种半主动控制装置与控制算法是非常有效的,可显著增强耦联结构体系的安全性与舒适性。与变刚度控制相比,变刚度变阻尼控制由于在装置中附加了阻尼,可以取得比变刚度控制更为有效的减震控制效果。

It is introduced 2 new semiactive control devices for coupled buildings, The equations of motion of coupled buildings with the proposed control devices are established herein. Furthermore, a new semiactive control algorithm, which can be used for all switching-type semiactive control systems, is put forward in this paper to derive the control laws of the proposed semiactive control systems. Numerical simulation is carried out to investigate the performance of the proposed control devices and the new semiactive control algorithm, and study the effect of the dynamical parameters of coupled buildings on the control effectiveness. Results show that the newly proposed control devices and algorithm are very effective to increase the safety and living comfort of the coupled buildings subject to earthquakes. The semiactive variable stiffness and damping control device outperforms the semiactive variable stiffness control as the result of the presence of auxiliary damping in this device.