Dynamic Analysis of Asphalt Pavement Compaction System Based on Vibration Eexcitation
In order to study the influence of damping and follow-up mass of asphalt pavement on vibration ac-celeration,a two-degree-of-freedom dynamic model was established by analyzing the relationship between vibra-tion excitation equipment and asphalt mixture.Based on this model,the mathematical solution is carried out,and the vibration acceleration response value expression of asphalt mixture pavement under grounding condition is obtained.Simulink is used to simulate two different vibration excitation devices,and the simulation results show that when the steady-state vibration is reached,the waveform of the vibration wheel acceleration changes with time and is a sine wave.The vibration acceleration of the two models is positively correlated with the pave-ment stiffness,and the correlation coefficient is above 0.97.At the same stiffness,the vibration acceleration de-creases with increasing damping and increases with the increase of the following mass.The research results are in line with the actual engineering rules,and lay a foundation for the subsequent research on the continuous detec-tion technology of asphalt pavement compaction.
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