基于剪应力等效的城市道路轴载换算方法研究  

Research on Axle Load Conversion Metliod of Urban Road Based on Shear Stress Equivalence

作　　者：常艳婷 Chang Yanting(Xi'an Railway Vocational and Technical Institute,Xi'an,Shaanxi 710660,China)

机构地区：[1]西安铁路职业技术学院土木工程学院铁道工程教研室,陕西西安710600

出　　处：《西安轨道交通职业教育研究》2022年第1期27-32,40,共7页Xi'an Rail Transit Vocational Education Research

摘　　要：为了完善现有轴载换算方法,减少城市道路沥青路面剪切病害的发生,分别采用单轴贯入试验和单轴贯入重复剪切试验对沥青混合料的抗剪性能和剪切疲劳性能进行了研究,建立了疲劳预估方程,确定了材料疲劳性能系数c,采用有限元方法研究沥青路面剪应力分布规律,然后遵循轴载换算基本原则,确定了层间剪应力比系数b,最终建立了以剪应力为指标的城市道路轴载等效换算公式。In order to improve the existing axle load conversion method and reduce the occurrence of shear diseases of urban road asphalt pavement,the shear resistance and shear fatigue properties of asphalt mixture are studied by uniaxial penetration test and uniaxial penetration repeated shear test respectively,the fatigue prediction equation is established,and the material fatigue performance coefficient C is determined,The distribution law^of shear stress of asphalt pavement is studied by finite element method,and then the interlayer shear stress ratio coefficient B is determined according to the basic principle of axle load conversion.Finally,the equivalent conversion formula of axle load of urban road based on shear stress is established.

关 键 词：沥青路面 城市道路 抗剪性能 单轴贯入重复剪切试验 轴载换算 

分 类 号：U414[交通运输工程—道路与铁道工程]