Abstract
The bending tests of the composite beams which includes frozen soil and two steel pipes under increasing and constant loads are performed for safety evaluation of adfreeze along the interface between frozen soil and steel pipes. As a result, it is showed that the influences of temperature, strain rate and grain size on the failure load of adfreeze is small. It is explained that the creep failure of frozen soil does not occur as far as adfreeze is maintained. Additionally, some guidelines to manage pipe roofing for maintaining adfreeze between frozen soil and steel pipes are proposed using the analysis result on site scale model.
