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为获得汽车荷载作用下斜坡地基上路堤沥青路面的实际动力响应规律,建立了沥青混凝土路面结构对斜坡地基上路堤不均匀沉降力学响应有限元模型,分析了不同行车速度对路基路面动力响应的影响以及斜坡地基沉降规律的研究。结果表明:在汽车荷载作用下,路基应力随着行车速度的增加而增加,并且随着行车速度增大,对路基的破坏就越大。使用了增加基层或面层刚度的方法把路基应力降到一定值。研究结果对改善路面结构的不利状态和优化路面结构设计具有重要指导意义。
In order to obtain the actual dynamic response of embankment asphalt pavement on the slope foundation under the action of automobile load, a finite element model of asphalt pavement structure response to uneven settlement of embankment on slope foundation is set up, and the influence of different driving speed on dynamic response of subgrade and pavement is analyzed As well as the settlement of slope foundation research. The results show that under the action of vehicle load, the subgrade stress increases with the increase of driving speed, and as the driving speed increases, the damage to the subgrade is greater. Using the method of increasing the stiffness of the base or surface layer, the subgrade stress is reduced to a certain value. The research results have important guiding significance for improving the unfavorable condition of pavement structure and optimizing pavement structure design.