REGULARITIES OF THE LINING STRESS-STRAIN STATE DURING OF THE PYLON METRO STATION CONSTRUCTION

Purpose. Perform numerical analysis of the station structure. Take into account in process mathematical modeling construction tunnels a three-vaulted station. Obtain regularities stress-strain state linings, which is influenced by processes soil excavation and lining construction. Methodology. To achieve this goal, series calculations models deep contour interval metro pylon was performed. Three finite-element have been developed, reflect stages Numerical performed on basis finite element method, implemented calculation complex Lira for Windows. Modeling tunnel linings massif using rectangular, universal quadrangular triangular elements, take special properties massif. Station are modeled means rod elements. Findings. Isofields reflecting obtained. The vertical displacements horizontal stresses that characteristic analyzed. proved at stage opening middle scheme operation rather disadvantageous. bending moments normal forces also carried out asymmetry their distribution noted. Originality. Based obtained patterns force factors, it structure during necessary to measures prevent or reduce deformation frames unfavorable conditions. Practical value. In course research, changes stresses, displacements, station, sequence its construction, were