摘要
利用三角级数法模拟轨道的不平顺,采用列车编组和桥梁组合的模型,通过建立车-桥-TMD动力系统振动方程,研究了TMD控制下桥梁的竖向位移响应。通过TMD质量比影响曲线得出了最佳质量比,并将MTMD与STMD进行了对比分析,给出了时程响应曲线,结果表明MTMD对桥梁竖向振动的减振效果更明显,且更适用于工程实践。
Simulating the track irregularities by trigonometric series method, the train-bridge-TMD dynamic vibration equations were established based on the combined modal of train formation and bridge. Then the vertical displacement of the bridge under the control of TMD was studied， The best TMD mass ratio was given by the curve of TMD mass ratio. Also the time-space responds curve was given. In contrast with STMD, the results show that the controlling effect of MTMD to the vertical vibration of bridge is more evident and more practical in engineering project。
出处
《噪声与振动控制》
CSCD
北大核心
2005年第4期14-17,共4页
Noise and Vibration Control
基金
西南交通大学基础科学研究基金(2001B13)
关键词
振动与波
桥梁振动
TMD控制
轨道不平顺
vibration and wave；vibration of bridges
tuned mass damper control
track irregularity
