Comparative analysis of experimental and calculated data on the stress-strain state of the test pit
Abstract
Comparative analysis of experimental and calculated data on the stress-strain state of the test pit
Incoming article date: 21.05.2021he article provides a comparative analysis of the experimental data obtained as a result of field tests (excavation), with the data of numerical calculations. Mathematical modeling of the experiment was carried out using the Plaxis software package, according to the model of plastically hardening soil. The main task was to compare the obtained data on the decompaction of the soils of the foundation pit with the calculated deformations and analyze the results. The problem was solved in accordance with the experimental data in two settings: in the first case, the variant with inclined slopes of the pit sides was considered; in the second, the problem with vertical slopes was solved. As a result of the calculation, data on the deformations of the soil massif were obtained and analyzed according to the two selected schemes. The best possible convergence of the calculation results with the experimental data was obtained for a pit with inclined slopes, which corresponded to the experimental formulation of the problem. For the case with vertical slopes, the results of deformations of the decompaction of the bottom of the pit turned out to be two times less, which corresponds to the conclusion that the quantitative results of deformation of both the foundation of the pit and its upper side part directly depend on the angle of the slope.
Keywords: experimental pit, experimental data, numerical calculation, deformations of decompression, pit slopes, calculation results