METHOD FOR REINFORCING RAILWAY ROADBED IN THE AREA OF JUNCTION WITH AN ARTIFICIAL STRUCTURE

摘要

FIELD: railroad transportation.;SUBSTANCE: invention relates to reinforcing of railway roadbeds on sections in the area of junction with artificial structures, and can be used on sections of railway lines under construction and in urgent and planned preventive works on operated sections of the road. The method for reinforcing the railway roadbed in the area of junction with an artificial structure includes injecting a hardening solution from both sides of the roadbed at an inclination to a horizontal plane, forming a reinforcing support system, the hardening solution is preliminarily injected by submerging the injectors along the clearance contour of the structure vertically, and the hardening solution is injected at an inclination by the injectors submerged outside of the clearance area of the structure, with gradual processing of the roadbed soils to the depth: h_i = z ∙ (1-l_i/L), wherein: z is the power of the working area of the roadbed; l_i is the distance to the artificial structure; L is the length of the transitional section, and the power of the working area of the roadbed is determined by the formula: , wherein: σ_0-p are the stresses at the main site in the under-rail section at a depth of h₀ from the sole of the sleeper; σ_i-p are the stresses in the roadbed at a depth of h_i from the sole of the sleeper; λ_р is the attenuation coefficient depending on the speed of the rolling stock. The invention is developed in the dependent claim.;EFFECT: increased stability of the roadbed, a possibility of assuming higher loads, reduced residual deformations and performance of work in reinforcing the roadbed without restricting traffic.;2 cl, 3 dwg, 1 ex