3层钢结构非线性地震反应的变增益模糊控制  

GAIN-SCHEDULED FUZZY CONTROL FOR NONLINEAR SEISMIC RESPONSE OF A 3-STORY STEEL STRUCTURE

作　　者：张永兵[1] 秦荣[1] 李双蓓[1] 

机构地区：[1]广西大学土木建筑工程学院,南宁530004

出　　处：《振动与冲击》2008年第10期106-110,120,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金资助;项目批准号:19872020;广西研究生教育创新计划资助;项目批准号:2006105930814D05;2008105930814D003

摘　　要：设计制作了一款新型的压电变摩擦阻尼器,并将其作为控制装置,提出了能有效抑制强烈地震激励下建筑结构非线性反应的变增益模糊控制算法,建立了量化因子、比例因子与结构响应之间的关系。考虑地震加速度的影响,对量化因子进行了在线自调整。对受控的3层钢结构进行了非线性地震反应的数值仿真分析,并与其它的控制策略进行比较。结果表明,对于安装有压电变摩擦阻尼器的结构,采用变增益模糊控制算法,能有效抑制建筑结构的非线性地震反应,减少地震对建筑结构的破坏。A new piezoelectric friction damper is designed and fabricated here.The piezoelectric friction damper is regarded as a control device,a fuzzy control algorithm is proposed for reducing nonlinear seismic response of a 3-story benchmark building.Interactive relationships between structural responses and quantification factors,scaling factor are established,considering the influence of the absolute value of the ground acceleration through the fuzzy controller,the quantification factors are gain-scheduled online.Numerical simulation is carried out for analyzing the nonlinear seismic responses of the controlled 3-story benchmark building.And the simulation results are compared with those form other control strategies.The results show that the fuzzy control can reduce the nonlinear seismic response of the 3-story benchmark building with piezoelectric friction dampers efficiently and minimize the damage in the building structure caused by strong earthquake.

关 键 词：非线性地震反应 变增益模糊控制 压电变摩擦阻尼器 钢结构 振动控制 

分 类 号：P315.966[天文地球—地震学] TU352.11[天文地球—固体地球物理学]