This study aims to analyze the thermal field characteristics in high-altitude permafrost regions to reduced incidence of pavement diseases caused by heat absorption. The heat exchange between asphalt pavement and the environment was simulated using ABAQUS, examining the temperature variation patterns in the pavement at different elevations during the summer on the QTP. The results indicated that the mean residuals between the simulated and measured road surface temperature values were less than 1 °C. Subsequently, the effects of various environmental, structural, and material factors on pavement temperature were examined. Furthermore, key material factors influencing pavement temperature on the QTP were analyzed for sensitivity. The results indicate that although the pavement temperature during summer on the QTP is not high, the diurnal temperature variation is significant. In Ali, the diurnal temperature difference can reach 19.3 °C, and the maximum positive temperature gradient can reach 204.49 °C m-1. Sensitivity analysis shows that the solar radiation absorption coefficient is the key factor controlling the maximum pavement temperature: a 0.1 decrease in absorption reduces the maximum temperature by approximately 2.5 °C. Meanwhile, the surface heat transfer coefficient is the primary factor affecting the maximum temperature gradient: an increase of 1800 <InlineEquation ID="IEq1"> <EquationSource Format="TEX">$\text{W}\,{\text{m}^{-1}}\,^{ \circ } \text{C}^{-1}$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mtext>W</mtext> <mspace width="0.166667em" /> <msup> <mtext>m</mtext> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </msup> <mmultiscripts> <mspace width="0.166667em" /> <mrow /> <mo>∘</mo> </mmultiscripts> <msup> <mtext>C</mtext> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation> in the heat transfer coefficient can reduce the maximum gradient by about 30 °C m-1. Reducing solar absorption and appropriately increasing thermal conductivity can mitigate surface overheating and temperature gradients, whereas specific heat capacity has a negligible effect. These findings provide a theoretical basis for designing cooling pavements in high-altitude regions.

Analysis of temperature field variation characteristics and influencing factors of asphalt pavement under large temperature variation

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发表日期：

2026年5月11日

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Yadong Xie,
Junfei Zheng,
Yingfan Luo,
Guangwei Chen,
Xueyou Li,
Dongya Ren

摘要

This study aims to analyze the thermal field characteristics in high-altitude permafrost regions to reduced incidence of pavement diseases caused by heat absorption. The heat exchange between asphalt pavement and the environment was simulated using ABAQUS, examining the temperature variation patterns in the pavement at different elevations during the summer on the QTP. The results indicated that the mean residuals between the simulated and measured road surface temperature values were less than 1 °C. Subsequently, the effects of various environmental, structural, and material factors on pavement temperature were examined. Furthermore, key material factors influencing pavement temperature on the QTP were analyzed for sensitivity. The results indicate that although the pavement temperature during summer on the QTP is not high, the diurnal temperature variation is significant. In Ali, the diurnal temperature difference can reach 19.3 °C, and the maximum positive temperature gradient can reach 204.49 °C m^-1. Sensitivity analysis shows that the solar radiation absorption coefficient is the key factor controlling the maximum pavement temperature: a 0.1 decrease in absorption reduces the maximum temperature by approximately 2.5 °C. Meanwhile, the surface heat transfer coefficient is the primary factor affecting the maximum temperature gradient: an increase of 1800 $\text{W}\,{\text{m}^{-1}}\,^{ \circ } \text{C}^{-1}$ $W m^{- 1}^{\circ} C^{- 1}$ in the heat transfer coefficient can reduce the maximum gradient by about 30 °C m^-1. Reducing solar absorption and appropriately increasing thermal conductivity can mitigate surface overheating and temperature gradients, whereas specific heat capacity has a negligible effect. These findings provide a theoretical basis for designing cooling pavements in high-altitude regions.