Simulation Study On Frost Heave Resistance Characteristics Of transmission Line Tower Foundation In Peat Season Permafrost Region

Abstract

This paper mainly studies the bearing performance of the cone-column foundation and the optimal inclination angle of anti-frost heave in the peat seasonal frozen soil area of the Zoige Plateau,combining numerical simulation, laboratory tests and theoretical calculations. The conclusions are as follows: (1)The isotherm level at the same depth.the isotherm value increases with the increase of depth.and finally tends to be stable.and the base temperature of the same soil depth is higher than the surrounding soil temperature. (2)At different foundation inclinations of $8^{\circ}, 9^{\circ},10^{\circ},11^{\circ}$ and $12{}^{\circ}$, the frost heaving resistance of the cone column foundation increases with the increase of the angle of the foundation inclined plane, and it is proposed that the optimal angle of the cone column foundation frost heaving resistance is $10^{\circ}$ under this geological condition.