Vehicle Dynamic Load Of The Damaging Effects Of Asphalt Pavement

With China's economic development, increasing traffic volume, and continuously improvement of speed, the obvious difference is also growing between the existing design method of static load model and the dynamic load models of the actual vehicle operation process imposed on the road. The dynamics of the ground structure are far from mechanical properties can describe. The roads are often in the absence of performance on the design life of early damage, especially for high-grade roads, which is not considered the important role in vehicle dynamic load.This paper conducts an on-site early damage investigation of Guangzhou Development Zone sections of the road. The paper deeply analyses the damage characteristics of the vehicles dynamic loads to the asphalt pavement, and studies damage of the asphalt pavement destruction under the vehicles loads.This paper in light of the research projects focus on vehicle dynamics and structural dynamics from the process of moving the vehicle structure and properties of asphalt pavement itself. The paper creates the vehicle vibration model, dynamic model and Surface roughness model, and establishes a corresponding vibration models of the vehicle dynamic loads the numerical calculation and analysis.During researching the vehicle dynamic load, the dissertation uses RPC-MTS system to establish interaction test plan of vehicle-ground, and resolve the measure of vehicle dynamic load successfully. It provides a new test method for the field of vehicle-ground research.The paper in the process of research and the analysis, according to investigates and studies the road surface actual characteristic, successfully applies finite element analysis software to the vehicles Dynamic load to the asphalt pavement destructive effect research in, discussed the road surface to move under the Dynamic load function in the vehicles the stress and the strain distribution and the characteristic. The paper has expounded the asphalt pavement under vehicles Dynamic load function weary dehiscence, the material was loose and so on the destruction phenomenon forms the mechanism, and proposed the corresponding preventive measure from the design angle.