Calculation of the slope of the filling reinforced geosynthetic structure on frozen soils

Abstract

The article studies the problem of assessing the possible causes of deformations of the retaining gabion wall, performing calculations of the stability of the retaining wall for the period of restoration work, as well as developing a project to stabilize the deformed section. The aim of the work is to assess the possible causes of deformations of the retaining gabion wall for a certain period of time, to perform calculations of the stability of the retaining wall for the period of restoration work, as well as to develop a project to restore the deformed section. At the first stage of the work, the stability and reliability of the measures for temporary embankment protection were checked for the period of dismantling the gabion retaining wall and building a new retaining structure. At the second stage of work, a design of a retaining structure was developed at the site of the dismantling carried out. As an alternative design of the gabion retaining wall, an armored structure made of geogrid was considered. The analysis of possible causes of deformations is carried out. The calculation of the stability of the retaining wall before/after the measures to strengthen the slope was performed. Calculations of an armored soil wall from a geogrid were carried out in the Midas GTS NX software package, which allows you to perform stability calculations, determine the stress-strain state of the base and structure, determine deformations, forces, etc. The solution to the problem of determining the stability of the structure was made by the method of strength reduction. The search for a solution is carried out on the basis of a sequential decrease (increase) in the shear characteristics of the soil (specific adhesion and the angle of internal friction). The calculation of stability and determination of the stress-strain state are performed. The results of the conducted studies have shown the effectiveness of using geogrids with soil wrapping as an measure to strengthen the slope. The condition for ensuring the stability of the retaining wall is provided if the recommendations for the construction of the retaining structure are followed.