磁流变阻尼器在洪山大桥拉索减振中的应用  

The Application of MR Damper in Cable Vibration Mitigation on Hongshan Bridge

作　　者：陈政清[1] 曹宏[1] 禹见达[1] 王修勇[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《中南公路工程》2005年第4期27-30,103,共5页Central South Highway Engineering

基　　金：国家自然科学基金资助项目(50178013)

摘　　要：介绍了一种新型磁流变(MR)阻尼器———永磁调节装配式磁流变阻尼器在长沙洪山大桥拉索减振的应用及试验研究情况,得到了安装阻尼器前后拉索的动力特性,结果表明这种新型磁流变阻尼器能有效地提高拉索的模态阻尼比,抑制拉索的大幅振动。由于该阻尼器无需供电,装配简单,维修方便,与其他的磁流变阻尼器相比,具有较高的推广应用价值。The application and experiment research of a new type of Magneto-Rheological（MR） damperpermanent magnetism adjustable assemblage MR damper in mitigating cable vibration on Changsha Hongshan Bridge is introduced in this paper, the dynamic property of cable before and after installation of dampers is summarized, the results demonstrate this new type of MR damper can effectively improve the modal damping ratio, suppress the violent vibration. Comparing with other MR damper, this damper is no need to supply power, easily assembled, convenient for repair, having a high value of application and popularization.

关 键 词：磁流变阻尼器 斜拉索 拉索减振 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]