Comparative Analysis of Theoretical and Experimental Research into the Method of Foundation Base Compaction Using Internal Pressures
The purpose of the work is to compare the results of experimental and theoretical research into the method of compaction of the foundation bases using internal pressure. The objective was to do experimental and numerical research into the dependence of broadening parameters and the compacting zone around it on the level of compaction pressure. The hypothesis of the research: in development of existing methods for the deep compaction of the bases foundation, the authors proposed a method compaction of the bases foundation using internal pressure, the essence of which is that internal pressure is created at required depth with a calculated intensity required to form a broadening with the required parameters. The solve for this problem, we used experimental methods for estimating the stress-strain state of soil mass, numerical methods for solving a mixed elastoplastic task of FEM in a physically and geometrically nonlinear formulation to determine the stress-strain state of a soil mass. The results of comparing numerical research with the experimental data showed that the maximum difference of values was 30-33 % when Hardening Soil Model was used and deviation of 1.5-2.5 times was achieved when using the Mohr-Coulomb model.