Abstract
The authors performed laboratory tests for bending characteristics of frozen soil column with rectangular section whose tension side is reinforced by steel pipe. The tests showed an increasing tendency of the bending strength when reinforced. An analytical procedure is developed for the steel pipe reinforced frozen soil column as a composite material. The computed results show rather good comparisons with the relation of load vs. deflection as well bending stress at failure obtained by laboratory test if the frozen bond between the steel pipe and the soil does not break. The computed stress at the breakage of the bond under bending test is also coincident with the adhesive strength obtained by laboratory test. The authors applied the analysis to estimate a site scale condition and estimated how much soil volume to be frozen can be reduced if the steel pipe reinforced frozen column is used.
