不同交通等级沥青路面层间结合剪应力分析研究

Research on the course bind shear stress of different traffic levels asphalt pavement

采用B ISAR计算软件对车辆荷载作用下沥青路面结构内剪应力分布规律进行研究,计算时考虑了沥青路面层间结合完全和不完全接触状态,找出计算层间结合剪应力最大值点,在此基础上,对不同交通等级典型沥青路面结构进行层间结合处剪应力计算分析,得出面层与面层、面层与基层层间结合处剪应力值;同时研究了超载对沥青路面层间结合处剪应力影响规律以及坡度对不同交通等级沥青路面结构内最大剪应力的影响规律,研究结果为合理分析沥青路面层间结合不好引起的早期病害提供一定的技术支持。

Through BISAR to study the shear stress distribution of asphalt pavement structure,at the same time takes into account asphalt pavement layer full contact and not full contact condition,find out the shear stress maximum points of course bind.On the basis,analysis the course bind shear stress of the different traffic levels typical asphalt pavement structure,obtain the course bind shear stress values of surface layer and surface layer,surface layer and base layer.At the same time,research the effects of shear stress of overloading to asphalt pavement course bind,and research the effects of gradient to different traffic levels asphalt pavement maximum shear stress.The results provides a certain technical support for asphalt pavement course bind leading to the early disease.