2021 Volume 77 Issue 2 Pages I_77-I_84
When estimating the freezing zone under the paved road using two-dimensional heat transfer analysis, it is extremely rare that the road surface temperature of the paved road required to the analysis is clarified. Therefore, it is desirable to be able to estimate the road surface temperature using the easily available outside air temperature. In this study, We investigated the interrelationship between the 10-year road surface temperature and the outside air temperature measured at 130 road telemeters in Hokkaido. In addition, the interrelational equations between the road surface temperature and the outside air temperature in each area in Hokkaido was derived. As a result, It is confirmed that the frost penetration depth can be estimated accurately by performing a two-dimensional heat transfer analysis using the road surface temperature calculated by substituting the outside air temperature into the optimal interrelationship equation.
