利用MTMD控制桥梁竖向振动的初步研究

英文篇名：Initial Study of Vertical Vibration of Bridge under the Controlling of MTMD
中文刊名：噪声与振动控制
英文刊名：Noise and Vibration Control
作者：肖艳平 ; 沈火明
英文作者：XIAO Yan-ping ; SHEN Huo-ming (Dept. of Appl. Mechanics and Eng. ; Southwest Jiaotong University ; Chengdu 610031 ; China)
中文关键词：振动与波 ; 桥梁振动 ; TMD控制 ; 轨道不平顺
英文关键词：vibration and wave ; vibration of bridges ; tuned mass damper control ; track irregularity
出版日期：2005-08-18
机构：西南交通大学应用力学与工程系,西南交通大学应用力学与工程系成都610031 ,成都610031
年：2005
期：04
出版单位：噪声与振动控制

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.

引文

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