噪声与振动控制2019，Vol.39Issue(5)：78-83,6.DOI:10.3969/j.issn.1006-1355.2019.05.015
TMD在简支箱梁多阶模态振动控制中的应用
Application of TMD in Multi-order Modal Vibration Control of a Simply Supported Box Girder
摘要
Abstract
The problem of effective control of the multi-order mode vibration response of a simply supported box-girder is studied. Firstly, the controlled mode is determined through modal analysis of the box girder structure. The optimal stiffness, optimal damping and optimal attaching position of the TMDs are obtained based on the TMD fixed-point theory and the identification method of equivalent quality for multi-DOF system. Then, through the harmonic response analysis of the box girder structure, the vibration-absorbing performance of the TMDs under different mass ratios is studied. Finally, based on the vehicle-track-bridge coupling dynamic model, the control effectiveness of the TMDs for the low-frequency vibration of the box girder structure under train-traveling load is discussed. The results show that the TMD can effectively absorb the low-frequency vibration energy near the vertical natural frequency of the box girder;the larger mass ratio of the TMD can lead to better vibration-absorbing performance of the TMD;the reasonable multi-mode modal TMD combination can effectively suppress the low-frequency vibrations of the box-girder under the dynamic load of the train and more effectively reduce the transmission of the bridge spring support forces to the lower pier.关键词
振动与波/振动控制/简支箱梁/TMD/模态分析Key words
vibration and wave/vibration control/simply-supported box-girder/TMD/modal analysis分类
交通工程引用本文复制引用
张新亚,雷晓燕,罗锟..TMD在简支箱梁多阶模态振动控制中的应用[J].噪声与振动控制,2019,39(5):78-83,6.基金项目
国家自然科学基金资助项目(51978264,51868023) （51978264,51868023）
江西省教育厅课题资助项目(GJJ170357) （GJJ170357）
