Comparison of modulus equations of frozen soil based on spherical template indenter

摘要

In order to provide reliable modulus estimating equation, based on Spherical template indenter test and linear elastic theory, it obtained two different modulus formulations, called as strict solution and modified solution relatively. Following then, a general equation group was provided to illustrate the reason causing the difference of those two solutions. Using the testing data of frozen samples, the simulation was built to examine those two solutions with result that modified solution was better consistent with simulation and experimental data. Simulation results indicated that the frictionless hypothesis used for analysis was approximately correct within specific contacting area. By comparison with other experiment results, it found that the modified solution gave more safety value while the strict solution overestimated the compression modulus of frozen soil. Therefore, the modified solution is a feasible and reliable function applied for determining compression modulus of frozen soil.