摘要
针对铁路提速后大部分轻型墩桥梁横向车桥耦合振动幅值超限问题,提出采用MT-MD对其进行控制。本文首先将被控结构作为多自由度体系,建立了结构—MTMD系统力学模型和运动微分方程,进而以一轻型墩特大桥为例设计MTMD,并对采用MTMD控制铁路轻型墩横向车桥耦合振动的效果进行了分析。
With the speed-up of railway trains, the transverse vibration amplitude of a majority of light pier bridges exceeds the allowance value. For this problem, this paper proposes to control the transverse vibration of light pier bridges with MTMD. Taking the structure as a multiple- degree of freedom structural system, the calculating model of structure-MTMD system is built and the motion differential equation is derived. Then, MTMD for a light pier bridge is designed and the control effect of transverse vehicle-bridge coupled vibration is analyzed.
出处
《石家庄铁道学院学报》
2005年第2期15-17,共3页
Journal of Shijiazhuang Railway Institute
基金
铁道部科技研究开发计划项目(2000G014-B)
关键词
轻型桥墩
振动控制
MTMD
频带宽度
中心频率比
light pier
vibration control
multiple tuned mass damper
frequency wide
center frequency ratio