极端低温对道路沥青路面的影响研究  

Study on the Influence of Extreme Temperature on Asphalt Pavement

作　　者：田博文 郑传峰[1] 单超 徐俊鹏 TIAN Bowen;ZHENG Chuanfeng;SHAN Chao;XU Junpeng(College of Construction Engineering,Jilin University,Changchun 130026,China)

机构地区：[1]吉林大学建设工程学院,长春130026

出　　处：《路基工程》2021年第5期51-55,共5页Subgrade Engineering

基　　金：国家自然科学基金项目(51508223);吉林省自然科学基金项目(20160101267JC)

摘　　要：运用ANSYS有限元软件,模拟研究极端低温和标准轴载作用对长春Ⅰ型和Ⅱ型两种常见路面结构的影响,分析路面各层结构的位移w和应力σ等力学特性变化及不同极端低温温度下路表应变变化。结果表明:同等状况下Ⅱ型路面结构抵抗变形的能力更强,各应力大小基本相同;得出极端温度下路面低温开裂的位置,可为充分理解路面结构特性并进一步进行道路的设计提供一定的参考和依据。The ANSYS finite element software was used to simulate the effects of extreme low temperature and standard axle load on Ⅰ-type和 Ⅱ-type common pavement structures in Changchun.The mechanical properties of each layer of pavement structure,such as displacement w and stressσ,and the strain changes of pavement surface under different extreme low temperature were analyzed.The results show that the Ⅱ-type pavement structure of surface course Ⅱ under the same condition has a stronger ability to resist deformation,the stress sizes are basically the same and the location of low temperature cracking of the pavement under extreme temperature can be obtained,which can provide certain reference and basis for fully understanding the pavement structure characteristics and further road design.

关 键 词：沥青路面 极端低温温度场 标准轴载 数值模拟 应力 路表应变 

分 类 号：U416.1[交通运输工程—道路与铁道工程]