加封层的水泥路面在动载作用下的受力分析

车辆在通过有裂缝、坑槽等不平顺的路面时会发生跳动,产生对路面具有瞬态冲击效应的动荷载。考虑在普通水泥路面上增加一层乳化沥青封层,采用ANSYS计算分析沥青封层对受动荷载作用的水泥路面动力性能的影响。计算结果表明:在动载作用下,增加沥青封层的水泥路面,动荷载作用效应在路表的影响范围要比没有沥青封层的小;沥青封层对面层底部的变形影响不大,但可降低面层底部的应力值。

Force Analysis of Cement Pavement Added with Seal Coat Under Dynamic load

When the vehicle is traveling on the road with surface irregularities such as crack, pit and groove, the vehicle will happen to jump and produce transient shock effect with the dynamic load on the pavement. By considering increasing an emulsion asphalt seal coat on the cement road surface, it uses ANSYS to calculate and analyze the influence of the asphalt seal coat on the dynamic performance of cement road surface under dynamic load. The calculation results show that to add an emulsion asphalt seal coat on the cement road surface may decrease the influencing range of the dynamic load effect on the road surface; the asphalt emulsion seal may have little eft＇cots on the deformation of the surface bottom, but can reduce stress value of the bottom surface.