重载作用下沥青路面结构动力特性分析

Dynamic Response of Asphalt Pavement Under Heavy Load

采用三维有限元法,分析了重载作用下沥青路面结构应力和弯沉变化规律,研究了沥青路面结构的早期破坏机理,得出在重载作用下,路面结构的表面易产生较大的拉应力,超载将使弯沉和应力急剧增大．结果表明,重载和超载是导致路面结构早期破坏的主要原因．

This paper analysed the effect of heavy load on deflection and stress of asphalt pavement with 3-dimension finite elelment method, concluded with the demolishment mechanism under heavy-load and over load. The result indicated that bigger stress appear at the top of pavement, where stress and deflection increase suddenly, Heavy load is one of the cause which lead to inchoate demolishment of asphalt pavement.