斜拉索磁流变智能减振控制系统的分析与设计.pdf

第八届全国振动理论及应用学术会议论文集，上海，2003年11月 斜拉索磁流变智能减振控制系统的分析与设计 李 惠， 刘 敏， 欧进萍， 关新春 （哈尔滨工业大学土木工程学院，哈尔滨 150090） 摘 要：本文在欧进萍（2003 ）以及欧进萍和李惠（2003 ）建立的结构主动、半主动和智能控制系统优化设 计方法的基础上，研究了斜拉索磁流变智能阻尼减振系统的设计方法，并采用所建立的设计方法完成了山 东滨州黄河公路大桥斜拉索磁流变智能阻尼减振系统的优化设计，进一步分析比较了半主动控制、被动 Passive-on和被动Passive-off控制策略下的磁流变阻尼器控制斜拉索风致振动的控制效果，验证了磁流变阻 尼器优化设计方法的正确性和有效性。 关键词：智能控制；磁流变液阻尼器；斜拉桥；斜拉索 Analyse and Design of Magnetorheological Dampers for Stayed Cables LI Hui LIU Min OU Jin-ping GUAN Xin-chun ( School of Civil Engineering, Harbin Institute of Technology, Harbin, 150090) Abstract: The design method of MR dampers for suppression of cable vibration is proposed based on the design approaches of structural active control, semi-active control and intelligent control systems suggested by Ou (2003), and Ou and Li (2003). The MR dampers for stay cables of Shandong Binzhou Yellow River Bridge are designed by utilizing the proposed design method, and the analysis of the cables incorporated with the designed MR dampers are carried out. The control effectiveness of the designed MR dampers to reduce the prototype cable wind-induced vibration using semi-active control strategy, Passive-on control strategy and Passive-off strategy, is verified numerically and compared with each other strategy, the analysis results show that the designed MR dampers can effectively reduce the cable vibration induced by wind. The availability and validity of the design method of MR dampers for cables are also simultaneously demonstrated though the numerical study on the prototype cables transversely connected with MR dampers near the lower anchorage. key words: Intelligent control; Magnetorheological dampers; Cable-stayed bridges; Stayed cables 基金资助：国家自然科学基金（编号）