STUDY ON THE THICKNESS OF WALL SURFACE OF REINFORCED SOIL WALLS MADE BY CONNECTING GEOCELL AND GEOGRID CORRESPONDING TO FREEZING INDEX

To realize both measures against frost heave and vegetation, a reinforced soil wall which consists of geocell working as a wall surface material and geogrid working as a reinforcing material is developed. It is possible to prevent the maximum freezing depth from reaching the geogrid by changing the number of geocell in order to avoid a local strain on the geogrid when banking material in reinforced soil walls freezes. In this research, we examined the function between the outside air temperature and the surface temperature which is required to estimate the maximum freezing depth in the 2D heat conduction analysis software. Using this, we examined the thickness of wall surface (the number of geocell) that can cover the maximum freezing depth corresponding to the freezing index of constructed region.