三峡大坝升船机地震鞭梢效应的智能控制

为了抑制三峡大坝升船机顶部厂房的地震鞭梢效应,提出了用顶部厂房屋盖MR智能隔震层来减小升船机地震鞭梢效应的方法.在建立了设置屋盖智能隔震层的三峡升船机计算力学模型的基础上,文中推导了屋盖MR智能隔震层-升船结构系统地震反应半主动控制的基本方程,建立了屋盖MR智能隔震系统对三峡升船机顶部厂房地震反应控制的设计计算方法,设计了智能控制系统,并对智能隔震系统进行了参数分析.仿真计算结果表明,安装合适的屋盖MR智能隔震系统和采用合适的控制策略能有效地抑制三峡升船机顶部厂房地震鞭梢效应,减小顶部厂房结构的层间侧移和厂房柱底的地震弯矩反应.

Intelligent Control for Seismic Whipping Effect of Three-gorges Lift-ship Structure

Based on the purpose of suppressing the whipping effect of top machinery building of three gorges lift ship structure, roof MR intelligent isolation system is presented. After establishing the mechanical modal of intelligent isolation structure system, a group of equations for semi active seismic control of intelligent isolation structure system are set up, and the control design methods of seismic response for top machinery building of lift ship structure are developed. Simulation analysis and studies of parameters demonstrate that the installation of appropriate roof MR intelligent isolation system and proper control strategy are capable of suppressing effectively the seismic whipping effect of top machinery building, and reducing effectively the interstory drift of top machinery building and seismic bend moment response of columns of top machinery building.