【摘要】 本文采用在结构顶层水平双向设置AMD主动控制装置的方法,对偏心结构在多向地震作用下的振动进行了遗传BP神经网络主动控制研究。首先论述了遗传BP神经网络的基本理论,然后介绍结构-AMD扭转耦联控制系统微分方程及其状态空间求解方法,最后介绍利用遗传BP神经网络对结构反应进行预测及对结构实施主动控制的方法。数值结果表明,利用遗传BP网络进行结构反应预测和控制是可行且有效的,能对结构的平动和扭转反应起到较好的减震效果。更多还原

【Abstract】 In this paper, the control approach to irregular building excited by multidimensional earthquake ground motions is presented by using active massed damper (AMD) with the combined method of the genetic algorithm (GA) back propagation (BP) neural network. The basic theory of GABP neural network is firstly introduced. Then, the mechanical model of a multistorey irregular structureAMD system is established and its equation of motion is given. The method of GABP neural network is used to predict the structural response and reduce the earthqake action with AMD. The numerical examples have shown that it is an effective method presented here to control the translational response and rotational response of irregular buildings.更多还原