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在测定半刚性基层沥青路面的路表弯沉时,当测点靠近路面结构边缘,弯沉盆将超出路面实际平面尺寸,弯沉盆和弯沉值的边界效应非常显著,弹性层状体系理论在此情况下具有局限性。文章针对笔者所在地区典型二级公路半刚性基层沥青路面,考虑超载作用,进行了三维有限元分析,讨论了超载作用下路面的压应力分布规律、路表弯沉与轴载的关系、路面极限破坏的条件,对于认识超载情况下半刚性基层沥青路面的路用特性具有一定的意义。
When measuring the deflection of the road surface of semi-rigid asphalt pavement, when the measuring point approaches the edge of the pavement structure, the deflection basin will exceed the actual plane size of the pavement, and the boundary effect between the deflection basin and the deflection value is very significant. The elastic layered system theory There are limitations in this case. In this paper, a three-dimensional finite element analysis of semi-rigid base asphalt pavement of a typical secondary highway in the author’s area is taken into account and the effect of overloading is considered. The distribution of compressive stress of pavement under overload is discussed. The relationship between road surface deflection and axle load, Destructive conditions for the understanding of overload conditions of semi-rigid asphalt pavement road use has a certain significance.