earticle

영어

Buried water pipe is exposed to excessive ground stress resulting from ground freezing and thawing in low temperature of winter which might lead to the rupture or deformation of water pipe. This paper is intended to identify, through a full scale model test, the ground temperature variation around the buried pipe depending on variation of ambient temperature as well as the displacement of the buried pipe and the stress behavior, and consequently, stress concentration and frost heaving were observed around buried pipe when ground was frozen. And despite of using sandy soil which is considered non-frost susceptible material for the test, frost heaving was occurred depending on water content and drainage condition. Viewing such result, even in case of displacing bedding and backfill material with non-frost heaving material, the countermeasure to protect from frost heaving is necessary depending on surrounding drainage condition, groundwater level and water contents.