动载作用下半刚性路面垂直动力响应三维有限元模拟

Three-dimensional Finite Element Simulated on Vertical Dynamic Responses to Semi Rigid Pavement Under Dynamic Load Effect

针对交通动荷载引起半刚性路面结构的破坏问题,采用正弦波动荷载加载,利用三维有限元数值法对动载作用下路面各结构层垂直动位移和垂直动应力分布规律进行了模拟。分析结果表明,有限元法能够很好地模拟车辆通过时半刚性路面各结构层竖向动位移和动应力分布规律,其结论可以用来指导工程设计。

According to semi rigid pavement structure failure problems which was caused by traffic dynamic load, we used sine-wave load loading, used numerical method of three-dimensional finite element to distribution law did simulation on vertical dynamic displacement and vertical dynamic stress of each structural layer on pavement under dynamic load effect. Analysis Results showed that method of finite element could well simulate distribution law on vertical dynamic displacement and vertical dynamic stress of each semi rigid pavement structural layer when vehicle passed, the conclusion can guide engineering design.