一种大跨桥梁涡激振动TMD减振效果评估方法
An evaluation method for TMD mitigation effect on vortex-induced vibrations in long-span bridges
摘要
Abstract
The dynamic interaction between the girder and TMD was considered,and an evaluation method for the TMD mitigation effect on the vortex-induced vibration(VIV)in long-span bridges was proposed.The TMD free vibration test was adopted to excite the girder,and only accelerations of the girder and TMD and the TMD stroke were measured.Firstly,a kinematic Kalman filter(KKF)was utilized to estimate the TMD stroke and velocity.Secondly,an extended Kalman filter(EKF)was utilized to estimate the stiffness and damping of the TMD,and the TMD force acting on the girder.Accordingly,the operational modal analysis became an experimental modal analysis.Finally,the transfer function method was utilized to estimate the modal parameters of the girder.The TMD mitigation effect on the VIV was evaluated by calculating the equivalent damping ratio of the VIV-girder-TMD coupled system.The results show that the proposed method can accurately estimate the TMD force acting on the girder.The estimation relative error of the equivalent damping ratio increases as the damping ratio and the initial displacement of the TMD decrease.The measurement noise increases when the TMD is well tuned,and the maximum relative error is less than 12%.The proposed method not only quantitatively evaluates the TMD mitigation effect on the VIV in long-span bridges,but also provides a theoretical basis for TMD re-tuning in the field.关键词
TMD减振效果评估/卡尔曼滤波/涡激力-桥梁-TMD耦合系统/模态参数估计Key words
TMD mitigation evaluation/Kalman filter/girder-TMD coupled system/modal parameter estimation分类
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盖盼盼,戴军,徐赵东,毕勤胜,姜文安,管庆松..一种大跨桥梁涡激振动TMD减振效果评估方法[J].中南大学学报（自然科学版）,2025,56(5):1923-1932,10.基金项目
国家自然科学基金资助项目(52408536,52108442) （52408536,52108442）
江苏省自然科学基金资助项目(BK20240874) （BK20240874）
中国博士后科学基金资助项目(2023M741442) （2023M741442）
科技部中国-巴基斯坦重大基础设施智慧防灾"一带一路"联合实验室开放课题(2024CPBRJL-01) （2024CPBRJL-01）
江苏省前沿引领技术基础研究重大项目(BK20222006) （BK20222006）
国家重点研发计划项目(2022YFE0210500)(Projects(52408536,52108442)supported by the National Natural Science Foundation of China （2022YFE0210500）
Project(BK20240874)supported by the Natural Science Foundation of Jiangsu Province （BK20240874）
Project(2023M741442)supported by China Postdoctoral Science Foundation （2023M741442）
Project(2024CPBRJL-01)supported by China-Pakistan Belt and Road Joint Laboratory on Smart Disaster Prevention of Major Infrastructures Open Program （2024CPBRJL-01）
Project(BK20222006)supported by Major Program of Fundamental Research on Frontier Leading Technology of Jiangsu Province （BK20222006）
Project(2022YFE0210500)supported by National Program on Key R&D Program) （2022YFE0210500）
