基于COMSOL的沥青混凝土路面车辙预估

Rutting prediction of asphalt concrete pavement based on COMSOL.

模拟了基质沥青路面和高模量沥青路面在高温温度场下的蠕变,借助有限元软件(COMSOL)引入温度场和受温度诱导的蠕变模型,对基质沥青混凝土路面和HMAC(高模量沥青混凝土)路面进行热辐射和固体力学耦合作用,分析对比其在车辆荷载作用下的永久变形,研究外界环境温度、太阳辐射和车轮荷载等因素对路面车辙变形发展的影响,能够对路面车辙深度进行精确地预估,研究分析车辙产生的蠕变变形,针对路面车辙提出合理的防治措施,减小路面永久变形,为路面的材料选择和结构优化提供参考价值,延长沥青路面使用寿命.

This paper simulates the creep of matrix asphalt pavement and high modulus asphalt pavement under high temperature field.With the help of COMSOL software,temperature field and temperature induced creep model are introduced to conduct thermal radiation and solid mechanics coupling effect on matrix asphalt concrete pavement and HMAC pavement.The permanent deformation of matrix asphalt concrete pavement and HMAC pavement is analyzed and compared under vehicle load.The influence of external environment temperature,solar radiation and vehicle load on the development of rutting deformation is studied.It can accurately predict the depth of pavement rutting,study and analyze the creep deformation caused by rutting,put forward reasonable prevention measures for pavement rutting,reduce the permanent deformation of pavement,provide reference value for pavement material selection and structure optimization,and extend the service life of asphalt pavement.