遗传BP神经网络主动AMD对偏心结构的减震控制  

AMD active control for irregular buildings using GA-BP neural network

作　　者：李宏男[1] 金峤[1] 

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024

出　　处：《地震工程与工程振动》2003年第2期134-142,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家杰出青年科学基金(50025823);辽宁省教育厅科研项目(A类20201056);辽宁省自然科学基金重大项目(2001101006)

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。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.

关 键 词：遗传BP神经网络 偏心结构 地震作用 减震效果 主动质量阻尼器 

分 类 号：TU352.11[建筑科学—结构工程]