基于TMD的多跨折形人行吊桥的振动控制研究  

Research on vibration control of multi-span zigzag-shaped pedestrian suspension bridge based on TMD

作　　者：刘礼昕 盛宏玉[1] 

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2015年第12期1674-1677,1719,共5页Journal of Hefei University of Technology：Natural Science

基　　金：合肥工业大学产学研校企合作资助项目(13-279)

摘　　要：文章建立了多跨折形钢结构人行吊桥模型,通过有限元软件ANSYS进行模态分析和人行荷载作用下的动力时程分析。结果表明,该桥在人行荷载作用下振动响应过大,影响结构的正常使用。在吊桥的跨中位置安装调频质量阻尼器(tuned mass damper,TMD)进行减振控制,通过计算选取最优的TMD参数。对比相同人行荷载作用下安装TMD装置和未安装TMD装置桥梁的动力响应,结果表明TMD能有效减轻吊桥的振动响应。In this paper, a model of multi-span zigzag-shaped pedestrian suspension bridge made of steel material is set up. The modal analysis and dynamic time-history analysis under the pedestrian loads are presented by using the finite element software ANSYS. The results show that the vibration response of the bridge under the pedestrian loads is too big and will influence the functions of the structure. To control the vibration level, the tuned mass dampers（TMD） are installed on mid-span of the suspension bridge by selecting optimal TMD parameters based on calculation. The vibration responses of the bridge with and without TMD device under the same pedestrian loads are calculated and compared. The results show that TMD can reduce the vibration response of the suspension bridge effectively.

关 键 词：人行吊桥 人行荷载 时程分析 减振控制 调频质量阻尼器 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]