Abstract <p>Currently, the coupled stochastic excitation action system of engineering vehicle load and gravel pavement does not take into account the influence of dynamic friction effect and fluid nonlocal effect, which cannot truly describe the mechanical behavior of the coupled vibration of engineering vehicle load and gravel pavement. Therefore, the objective of this paper is to propose a novel computational method to evaluate the vibration response problem of engineering vehicle load action on gravel pavement. Firstly, the computational method introduces a new 1/4 engineering vehicle load coupled with gravel road pavement stochastic excitation action system, considers the characteristics of the degree of unevenness of the gravel road pavement, and provides a degradation validation method for the model. Secondly, a 1/4 automobile model-non-local saturated site coupled vibration response model is developed. A coupled automobile-gravel roadway system of action is formed. The influences of inertia effect and nonlocal fluid superposition effect of the soil skeleton of the gravel roadbed were considered. Finally, the coupled car-gravel road vibration response characteristics under the excitation of different speeds of vehicles were analyzed. It is found that: the larger the vehicle speed, the more intense the vibration and the larger the influence range; the more uneven the road surface induces the larger vibration influence; the pore size superposition effect attenuates the amplitude more than the fluid superposition effect. The results not only clarify the attenuation characteristics of the vibration induced by construction vehicles traveling on gravel roads. It is also of great significance for the analysis and evaluation of aircraft landing and takeoff systems at field airports.</p>