铁路轻型墩MTMD横向振动控制

Research on Transverse Vibration Control of Railway Light-pier with MTMD

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.