沥青路面结构在不同层间接触状况下的抗车辙性能分析

Analysis on Anti-Rutting Performance of Asphalt Pavement Structures in Different Layer Contact Condition

文中通过建立二维有限元模型,分析了不同层间接触状态下柔性基层和半刚性基层沥青路面的车辙变形情况和力学响应。结果表明:结构层之间的紧密接触能提高路面结构的抗车辙能力;相同工况下,半刚性基层沥青路面抗车辙能力优于柔性基层路面;同时沥青面层和基层间的接触状态影响大于沥青面层之间接触状态;同时在超载的情况下,如要控制车辙变形,层间接触是否紧密就显得尤为重要。

Through building2D finite element model,the rut deformation and mechanical response of flexible base and semi-rigid base asphalt pavement under different contact conditions are analyzed.The results show that the close contact between the structural layers can improve the rutting resistance of the pavement structure;Under the same conditions,semi-rigid basement asphalt pavement has better resistance to rutting than flexible base pavement;At the sametime,the contact state between the asphalt layer and the base layer is greater than that of the asphalt surface;In the case of overload,in order to control the rut deformation,the contact condition between the layers is particularly important.