Analysis of factors on asphalt pavement rut development based on measured load and temperature gradient

作者：Gu Xing Yu^*; Yuan Qing Quan; Ni Fu Jian

来源：China Journal of Highway and Transport, 2012, 25(6): 30-36.

• 3-D finite element method
• 3D finite-element simulation
• Actual temperature
• Contact pressures
• Development rate
• Dynamic load simulation
• External factors
• Material compositions
• Overpressure
• Pavement material
• Pavement structures
• Permanent deformations
• Road engineering
• Rut
• Rut depth
• Temperature field analysis
• Tire pavement

In order to provide reference for research on asphalt pavement rut, aimed at external factors (temperature and load) on rut, and based on the measured tire-pavement contact pressure, a dynamic load simulation model was proposed, and combined with the temperature field analysis and pavement material test result, a reasonable 3D finite element simulation model considering dynamic load and temperature gradient was developed to investigate the law of rut depth on Jinghu Expressway under the actual temperature and different loads. The results show that the average temperature and pavement rut reach the maximum at 16:00. Both overload and overpressure have significant effect on the rut, which will speed up the rut development. The permanent deformation of the middle and top layers reaches 88% which are the main parts of rut development. When the temperature exceeds 23°C, the rut development increases fast, and when the temperature is higher than 28°C, the development rate of rut increases significantly. In order to avoid rutting, pavement structure combination type and material composition should be considered comprehensively, and overload must be prohibited.

• 出版日期2012
• 单位东南大学