连续配筋混凝土复合式沥青路面层间接触对其力学响应影响研究  

Research on the Influence of Interlayer Contact on Mechanical Response of Continuous Reinforced Concrete and Asphalt Concrete Composite Pavement

作　　者：邓凤祥 秦苗 李盛[2] 梁晓东 DENG Fengxiang;QIN Miao;LI Sheng;LIANG Xiaodong(Hunan Communications Research Institute Co.Ltd.,Changsha 410015,China;School of Traffic&Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Hunan Lianzhi Technology Co.Ltd.,Changsha 410019,China)

机构地区：[1]湖南省交通科学研究院有限公司,长沙410015 [2]长沙理工大学交通运输工程学院,长沙410114 [3]湖南联智科技股份有限公司,长沙410019

出　　处：《武汉理工大学学报（交通科学与工程版）》2022年第4期718-723,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金(51878076);湖南省自然科学基金(2022JJ30598)。

摘　　要：为探明连续配筋混凝土复合式沥青路面(CRC+AC复合式路面)层间接触对其力学响应的影响,利用ABAQUS建立CRC+AC复合式路面力学模型,分析夏季高温季节连续变温条件下在不同层间接触状态及轴重对CRC+AC复合式路面车辙变形的影响,以及不同层间接触状态对沥青面层力学响应的影响规律.结果表明:随着轴载作用次数不断增加,车辙变形逐渐增大,且增量逐渐减少最后趋于稳定,层间接触差则车辙变形更大;沥青面层压应力随层间摩擦系数的增大而减小,且沥青面层与CRC板的层间接触状态对靠近CRC板的沥青层压应力影响更大;无论是完全连续还是摩擦接触,纵向拉应力、横向拉应力沿深度的变化规律大致相同;不同接触状态下,对于纵向拉应力分布影响较大,对于横向拉应力的影响主要集中靠近表面层;当接触系数f为0.1时,界面层最大剪应力τ_(yz max)是完全接触时的25%,当接触系数f为0.7时,界面层τ_(yz max)是完全接触时的98%,良好的层间接触可以更好地传递车辆荷载的水平作用力.In order to find out the influence of interlayer contact of continuously reinforced concrete composite asphalt pavement(CRC+AC composite pavement)on its mechanical response,the mechanical model of CRC+AC composite pavement was established by ABAQUS,and the influence of different interlayer contact states and axle loads on rutting deformation of CRC+AC composite pavement and the influence law of different interlayer contact states on the mechanical response of asphalt pavement were analyzed under the condition of continuous temperature change in summer high temperature season.The results show that the rutting deformation gradually increases with the increasing number of axle loads.And the increment gradually decreases and finally tends to be stable,and the rutting deformation is greater when the contact difference between layers is poor.The compressive stress of asphalt pavement decreases with the increase of interlayer friction coefficient,and the interlayer contact state between asphalt pavement and CRC plate has greater influence on the asphalt lamination stress near CRC plate.Whether it is completely continuous or frictional contact,the variation law of longitudinal tensile stress and transverse tensile stress along the depth is roughly the same.Under different contact conditions,the longitudinal tensile stress distribution is greatly affected,and the transverse tensile stress is mainly concentrated near the surface layer.When the contact coefficient f is 0.1,the maximum interlayer shear stress τ_(yz max) is 25% when it is in full contact.When the contact coefficient f is 0.7,the τ_(yz max) is 98% when it is in full contact.Good interlayer contact can better transmit the horizontal force of the vehicle load.

关 键 词：复合式路面 有限元 车辙 层间接触 力学响应 

分 类 号：U416.224[交通运输工程—道路与铁道工程]