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在不同的工况下,应用ABAQUS有限元软件对长大上坡沥青路面内部应力进行了分析,得出各状态下的最大应力及其变化的规律,同时分析了长大上坡的坡度、坡长与车辆速度之间的关系及作用于路面上的力学行为,构建了车辙的变形和应力及其作用时间的关系模型。研究结果表明:在重载、超载条件下,各项应力值都呈明显加大的趋势;在长大上坡上加速行驶时,各项应力中最显著加大的是剪应力;长大上坡的沥青路面在车辆加速和减速、重载慢速行驶和超载的情况下容易受到破坏。
Under different working conditions, the internal stress of ascending asphalt pavement was analyzed by ABAQUS finite element software. The maximum stress and its variation under various conditions were obtained. The slope of the ascending slope was also analyzed Long and the relationship between the speed of the vehicle and the mechanical behavior acting on the road surface, the relationship between the deformation and the stress of rutting and the time of its action is established. The results show that under the conditions of heavy load and overloading, the stress values all tend to increase obviously. When accelerating on the uphill, the most significant stress is the shear stress. When growing up Pitch asphalt pavement in the acceleration and deceleration of vehicles, heavy slow driving and overload conditions vulnerable to damage.