武汉天兴洲大桥主梁纵向地震反应的准最优控制  

Suboptimal Control of the Longitudinal Vibration of Main Deck of Tianxingzhou Bridge Under Earthquakes Excited

作　　者：瞿伟廉[1] 李海峰[1] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉430070

出　　处：《武汉理工大学学报》2007年第4期72-74,102,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50520130296)

摘　　要：对天兴洲大桥主梁纵向地震反应进行粘滞阻尼器控制的准最优控制设计方法进行了研究。利用最小范数法和最小误差激励法求得了与主动控制效果尽量等效的粘滞阻尼器准最优参数,并对控制力与主梁纵向位移的权系数进行调节,使粘滞阻尼器产生的控制力和主梁的纵向位移都比较小。The research on the design method of the fluid damper which will be used to control the longitudinal vibration of main deck of the Tianxingzhou Bridge under earthquakes excited by suboptimal control method was proposed, Mininum error excitation method and mininum norm method were used to search the parameter of the fluid damper which is close to the effect obtained with the active control method. Then the coefficient related to the control force and the longitudinal displacement was modulated to make that both the control force and the longitudinal displacement of the main deck were reduced to a reasonable level.

关 键 词：斜拉桥 粘滞阻尼器 参数优化 准最优控制 

分 类 号：TU311[建筑科学—结构工程]