基于TMD的大跨度斜拉桥风致随机振动控制研究  

Research on Wind-induced Random Vibration Control of Long-span Cable-stayed Bridges Using TMD

作　　者：肖祥[1] 薛宗颜 XIAO Xiang;XUE Zongyan(School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第4期732-736,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：本文开展基于TMD的大跨度桥梁风致随机振动控制研究.建立了随机风荷载作用下桥梁—TMD系统随机振动响应分析的虚拟激励分析程序.提出了随机振动响应控制的TMD参数优化方法.以西固黄河大桥为背景,开展了实际桥梁的风致振动控制分析.结果表明:基于本文方法TMD参数优化后振动控制效率可提高近9倍,横向随机位移响应的控制效率可达到28.83%,横向随机加速度响应的控制效率可达到28.8%.Research on wind-induced random vibration control of long-span bridges based on TMD was carried out.A virtual excitation analysis program for random vibration response analysis of bridge-TMD system under random wind load was established and a TMD parameter optimization method for random vibration response control was proposed.Taking Xigu Yellow River Bridge as the background,the wind-induced vibration control analysis of the actual bridge was carried out.The results show that the vibration control efficiency can be improved by nearly 9 times after TMD parameter optimization based on this method.The control efficiency of lateral random displacement response can reach 28.83%,and the control efficiency of lateral random acceleration response can reach 28.8%.

关 键 词：简谐质量阻尼器 虚拟激励法 响应功率谱 风致桥梁振动响应 随机振动 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]