Abstract: A dynamic model of pavement vibratory compaction system was established based on the relationship between the vertical acceleration of vibratory roller and pavement compactness. The results of simulation by Simulink show that if the vibratory roller is in reasonable conditions within the scope of work and on the basis of the constant exciting force and vibrating frequency, the accelerating speed of roller wheel increases with increased stiffness coefficient of pavement material and decreases with the increased damping coefficient. The three-dimensional vibratory-pavement simulating model was established with finite element analysis software ABAQUS to simulate the pavement vibratory compaction system. Analysis results show that if pavement materials permit, use of strong vibration and first gear speed generates optimum compaction result. With the increased rounds of compaction, the pavement material density is improved. During re-compacting and final compacting the higher speed of vibratory roller should be applied and second gear of driving speed can be applied in compacting to improve production efficiency and reduce works cost. 

Key words: highway engineering, pavement compaction, vibration wheel acceleration, dynamic model, simulation

摘要： 从振动压路机垂直加速度和路面压实度的动力学关系出发，建立了路面振动压实系统模型。基于Simulink的仿真结果表明：在振动压路机合理工况范围内，激振力和振动频率保持不变，振动轮加速度随着路面材料的刚度系数的增大而增大，随着阻尼系数的减小而增大。利用有限元分析软件ABAQUS，建立振动轮-路面三维有限元模型。结果表明：在路面材料允许情况下，采用强振和一挡行驶速度压实的效果最好，随着碾压遍数的增加，密实度提高；在进行复压和终压时，振动压路机的碾压速度应适当提高，可以选择二挡行驶速度进行压实，有利于提高生产效率，降低施工成本。

关键词: 道路工程, 路面压实度, 振动轮加速度, 动力学模型, 仿真模拟