沥青路面永久变形特性的数值模拟分析  

Numerical Simulation Analysis of Permanent Deformation Characteristics of Asphalt Pavement

作　　者：施孟成 SHI Mengcheng(China Road&Bridge Corporation,Beijing 100011,China)

机构地区：[1]中国路桥工程有限责任公司,北京100011

出　　处：《黑龙江交通科技》2025年第1期54-57,86,共5页Communications Science and Technology Heilongjiang

摘　　要：为探究长期使用过程中沥青路面变形特性,采用有限元数值模拟软件建立路面结构模型,基于黏弹塑性本构关系对不同工况下路面车辙试验进行模拟,探究了加载时间、加载次数、环境温度、胎压等多方面因素对沥青路面形变的影响。结果表明:(1)循环加载下,沥青路面变形速率随时间增加逐渐加快。(2)不同加载次数下沥青路面沿道路横断面(指垂直车辆行驶方向x轴向)的变形均呈“W”形,且随循环加载次数的增多,路面变形深度也逐渐增大,沿车辆行驶方向(y轴向)的变形主要发生在沥青面层。(3)环境温度及胎压对沥青路面永久变形都具有重要影响,路面变形深度均随温度及胎压的增加而增大。In order to explore the deformation characteristics of asphalt pavement during long-term use,the finite element numerical simulation software was used to establish the pavement structure model.Based on the viscoelastic-plastic constitutive relationship,the pavement rutting test under different working conditions was simulated.The effects of loading time,loading times,ambient temperature,tire pressure and other factors on the deformation of asphalt pavement were explored.The results show that:(1)Under cyclic loading,the deformation rate of asphalt pavement gradually increases with time.(2)The deformation of asphalt pavement along the x-axis under different loading times is W-shaped,and with the increase of cyclic loading times,the deformation depth of pavement gradually increases,and the deformation along the y-axis mainly occurs in the asphalt surface layer.(3)Both ambient temperature and tire pressure have an important influence on the permanent deformation of asphalt pavement.The depth of pavement deformation increases with the increase of temperature and tire pressure.

关 键 词：沥青路面 车辙试验 黏弹塑性本构模型 

分 类 号：U418.68[交通运输工程—道路与铁道工程]