双轴车辆与桥梁的耦合振动与控制  

Coupling vibration and its control of duplex-bearing car and bridge

作　　者：李征[1] 黎明安[1] 李芳[1] 冉宝春[1] 

机构地区：[1]西安理工大学自动化学院,西安710048

出　　处：《应用力学学报》2018年第5期976-982,共7页Chinese Journal of Applied Mechanics

摘　　要：当运动的车辆通过跨度较大的桥梁时,车辆会引起桥梁的振动,而桥梁的振动又会使车辆发生振动,这就是车辆和桥梁之间的耦合振动。研究这种耦合振动,可以揭示这种耦合振动的发生原因,以便找到抑制对策。本文建立了比较结合实际车辆的双轴车辆模型,以一定速度通过简支桥梁模型的耦合振动方程;并以桥梁为被控对象,在已有研究的基础上建立了最优控制模型,构建了Simulink仿真模型,分析了不同速度下的控制效果。结果表明,引入主动控制,相对于无控制模型,其控制效果高达77.5%,提高了桥梁的安全性。When a moving car passes through a bridge with relatively large span, the car will lead to the vibration of bridge and the vibration of bridge will lead to the vibration of the car at the same time. This is a coupling vibration between a car and a bridge. By studying this coupling vibration, the causes leading to it will be revealed in order to find strategies to control it. A coupling vibration model of a duplex-bearing car model passing through a simply supported bridge model at a uniform velocity is set up, then using the bridge as controlled objects, an optimal control model is built and a Simulink simulation model on the basis of existing research is constructed. The control effectiveness under different velocities(up to 77.5%) is analyzed in order to prove the validity of this method.

关 键 词：双轴车辆模型 耦合振动 最优控制 仿真模型 

分 类 号：O326[理学—一般力学与力学基础] O232[理学—力学]