Skochko L. Interaction of multilevel retaining construction with soil mass

The object of the study is multi-level retaining structures used to stabilize landslide areas. The subject of the study is the formation of a stress-strain state in the elements of the system "retaining structures - a soil massif" when the planned-altitude position of the tiers of retaining walls changes. The aim of the work is the development of a methodology for calculating effective designs of multi-level retaining structures interacting with a soil massif on landslide landscapes. Research methods: analytical calculations of retaining walls using various techniques; Numerical modeling of the stress-strain state of the system "restraining structures - a soil massif", full-scale tests of fragments of retaining structures, instrumental observations of deformations of retaining walls. The scientific novelty of the study: for the first time a method has been developed that makes it possible to determine the dangerous zones of the occurrence of maximum forces and displacements in piles of multi-level retaining walls that are caused by relief, hydrogeological conditions, planned altitude of the tiers of retaining walls and corresponding horizontal loads; It was found that the position of the middle level of the containment structures is crucial for the formation of the stress-stain state of the system "containing structures - a soil massif", changing the location of this stage in terms of changing the maximum bending moments in all the retaining walls of the anti-slide system up to 2.5 times, multifactor analysis to determine the effect of placement of tiers of retaining walls on the values ??of deformations and maximum forces in the elements of the retaining structures the model of deformation of the ground environment on the basis of the dilatancy theory has been further developed to solve geotechnical problems in the calculation of multi-level containment structures, which consists in preliminary identification of model parameters based on the results of full-scale tests of fragments of restraining structures. Industry - Construction.