Chepurniy D. Pressure of the multilayer backfill on retaining walls with the load on the surface

Subject of inquiry is interaction of retaining walls with multilayer backfill with the local load. Thesis objective is development of methods for determining of active horizontal pressure from a multilayer filling taking into account useful load on the surface. Research methods: experimental method for determining a disadvantageous angles the slip planes and horizontal stresses in a state of limiting equilibrium multilayer backfill; theoretical methods based on the improvement of S. Coulomb theory for multilayer backfill; analytical and numerical methods for determining a disadvantageous soil pressure on retaining walls; analysis and comparison of theoretical and experimental data. Theoretical and practical results is the ability of using the obtained scientific and theoretical results in the determination of pressure the multilayer backfill on retaining walls, especially with a load on the surface. Novelty of the research: fixed the regularity the distribution of slip planes in the multilayer backfill and distribution of horizontal active pressure on depth of retaining walls, particularly with the loads to the surface ;experimentally fixed that at each depth of retaining wall in the limit state of multi-layer backfill form a single -plane collapse (sliding) , was first established theoretically and experimentally validated distribution patterns of passive soil pressure from the combined effect of its weight and local load on the surface ;was further developed numerical method for determination of active horizontal pressure from a multilayer backfill and useful load ;fixed the regularity the influence of multi-layer linear-deformed backfill and external loads on the distribution of the horizontal pressure at rest (operation). Implementation extent: the developed method for determining of horizontal pressure is used into elaboration of technical solutions retaining walls of domestic building on Lenin Avenue 45/1 in Kharkov; the results of work is recommended for of new regulatory documents in the calculation of the retaining walls. Range of application: the construction of new structures; the reconstruction of existing constructions; the development of solutions relatively removal an emergency condition of structures; with the development of regulatory, scientific and technical documentation, instructions and methodical instructions in the construction of retaining walls.