浅析汽车试验场SMA沥青路面在重型车辆路试下的抗剪性能  

Analysis of the Shear Resistance Performance of SMA Asphalt Pavement under Heavy Vehicles in the Automotive Testing Ground

作　　者：舒俊 史志华 张弦 SHU Jun;SHI Zhi-hua;ZHANG Xian(National Automobile Quality Inspection and Test Center(Xiangyang),Xiangyang 441004,China;Wuhan Dongyan Intelligent Design Institute Co.,LTD,Wuhan 441004,China)

机构地区：[1]国家汽车质量检验检测中心(襄阳),襄阳441004 [2]武汉东研智慧设计研究院有限公司,武汉430056

出　　处：《汽车科技》2023年第4期58-63,共6页Auto Sci-Tech

摘　　要：SMA沥青混合料因具备良好路用性,近年来被广泛运用到汽车试验场试验道路路面中。本文围绕SMA沥青路面表层抗剪性能展开分析,采用制动平行试验、原地打方向平行试验,记录了在不同车速下重载车辆制动、不同轴荷下原地打方向对汽车试验场试验路面的表层破坏。结果表明:重载车辆制动对沥青路面损伤可忽略不计,但原地打方向对沥青面层的破坏影响较大,主要体现在表层沥青混合料的剥落,长期会造成沥青路面凹槽,影响路面不平度,进而影响汽车相关道路试验的开展。In recent years,SMA asphalt mixture with excellent road performance has been widely used in experimental road surfaces at automotive testing grounds.The analysis on the shear resistance performance of the surface layer of SMA asphalt pavement is focused.Using parallel braking tests and in-situ driving direction parallel tests,the surface damage of the test road surface on the automotive testing ground is recorded under different speeds of heavy-duty vehicle braking and different axle loads in situ driving direction.The results indicate that the braking of heavy-duty vehicles causes negligible damage to the asphalt pavement.However,the direction of driving in place has a significant impact on the damage of the asphalt surface layer.It is mainly reflected in the peeling of the surface asphalt mixture,which can cause grooves on the asphalt pavement in the long term.And then,the unevenness of the pavement is affected.And the development of road tests related to automobiles is affected in final.

关 键 词：汽车试验 SMA 路用性能 抗剪性能 

分 类 号：U41[交通运输工程—道路与铁道工程]