沥青路面路表开裂破坏源探析与影响因素研究  

Research on Damage Source of Cracking on the Surface of Asphalt Pavement and Its Influence Factor

作　　者：罗要飞 赵兴晨[1] 张苛 张争奇 师晓鸽[4] LUO Yao-fei;ZHAO Xing-chen;ZHANG Ke;ZHANG Zheng-qi;SHI Xiao-ge(School of Civil Engineering and Environment,Zhengzhou University of Aeronautics,Zhengzhou 450046,China;Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064,China;College of Information Engineering,Fuyang Normal University,Fuyang 236041,China;Pingdingshan Highway Transportation Institute of Survey and Design,Pingdingshan 467000,China)

机构地区：[1]郑州航空工业管理学院土木与环境学院,郑州市450046 [2]长安大学特殊地区公路工程教育部重点实验室,西安市710064 [3]阜阳师范大学信息工程学院,阜阳市236041 [4]平顶山市公路交通勘察设计院,平顶山市467000

出　　处：《公路》2024年第9期1-8,共8页Highway

基　　金：河南省科技攻关项目,项目编号232102320091、222102320460、232102320052、222102320130;河南省研究生精品教材项目,项目编号YJS2022JC44;安徽高校优秀青年人才支持计划重点项目,项目编号gxyqZD2022101;安徽高校自然科学研究重点项目,项目编号KJ2020A1214;安徽省教育教学研究重点项目,项目编号2021jyxm1116;阜阳师范大学创新团队项目,项目编号CYLTD202211;辽宁省废弃矿区生态修复技术重点实验室开放基金项目,项目编号LNTUCEF-2302;2024年度郑州航空工业管理学院研究生教育创新计划基金项目,项目编号2024CX142。

摘　　要：为阐明沥青路面路表开裂破坏源的位置及影响因素,采用壳牌路面设计软件BISAR3.0,分析半刚性基层和组合式基层沥青路面路表力学响应状况,探讨其破坏源产生位置。并以半刚性基层沥青路面为对象,研究模量类型、水平力、层间接触条件劣化及车辆超载作用对路表受力状态及破坏源的影响。结果表明:路表荷载作用区边缘为沥青路面路表开裂破坏源的产生位置,路表力学响应软件计算结果与理论分析的结论相一致,破坏源处产生的裂缝类型为纵向Top-Down裂缝;在所选因素下半刚性基层沥青路面路表的力学响应状况基本不会发生改变,荷载作用区边缘为路表受力的最不利区域,不仅出现应力、应变指标的最大值,还会产生拉压受力状态的突变。模量类型、水平力作用、超载作用、层间光滑接触对路表荷载作用区边缘处力学响应的影响程度依次降低,除基-面层层间光滑接触条件外,其他影响因素均增大了路表开裂病害发生的概率。研究成果可为沥青路面路表病害发生机理的认识和预防提供参考。To explain the damage source of cracking on the surface of asphalt pavement,the mechanical response of pavement surface of semi-rigid base asphalt pavement and composite base asphalt pavement is discussed by the SHELL pavement design software BISAR 3.0.Meanwhile,the influence of material modulus,horizontal force,interface contact condition and vehicle overload on the mechanical response and damage source of semi-rigid base asphalt pavement surface is analyzed.The results show that the boundary of the loading action area on the asphalt pavement surface is determined as the damage source of cracking,which is in agreement with conclusions from theoretical analysis,and the longitudinal Top-Down cracking occurs on boundary of the loading action area.The mechanical response of semi-rigid base asphalt pavement surface basically does not change under the different factors.The boundary of the loading action area is weak areas of mechanical response on the surface.The maximum tensile stress and maximum tensile strain appear on the boundary of the loading action area,and stress state also sudden changes.The influence of elastic modulus,horizontal force,vehicle overloads and interface contact condition on the mechanical response at boundary of the loading action area decrease successively.Except for the smooth interlayer contact condition between asphalt layer and base layer,the generated probability of surface cracking is increased by the other factors.The research results can provide reference for the understanding and prevention of surface defects of asphalt pavement.

关 键 词：沥青路面 破坏源 路表 疲劳损伤 Top-Down裂缝 

分 类 号：U416.217[交通运输工程—道路与铁道工程]