Research on the Damage of Heavy Vehicles to the Pavement

Abstract

The dynamic load of heavy vehicles accelerates the destruction of the pavement tremendously. Most of the current designs of the pavement structure consider the mechanical behavior in the static load effect of the vehicle as the research object, which is basically suitable in the case of low load and low speed. With the improvement of vehicle load and running speed, the difference between static load model and the actual impact on the ground in the process of vehicle driving grows bigger and dynamic characteristics of the ground structure is far from what the static characteristics can describe. Researches on the mechanical behavior of the interaction of vehicle-pavement coupling system have attracted people's attention in recent years. This paper presents a systematic research on the effect between vehicle and pavement under the heavy vehicle dynamic loads, which focuses on driving structure parameters, driving speed's dynamic load on the pavement and the mechanical behavior resulting in the pavement stress and strain response and also on the optimization of structural parameters of vehicle without reducing the dynamic load on the ground but not declining the ride comfort, aiming at revealing the internal relations and rules between the pavement and the vehicle, which is of certain significance in guiding the design of pavement structure and heavy vehicle and has certain practical significance to prolong the service life of the pavement.