ROAD STRUCTURE Russian patent published in 2009 - IPC E01C3/06 

FIELD: construction.

SUBSTANCE: road structure including coat, foundation, draining layer, earth bed, lean-to cross catching drain arranged in top of concave vertical curve installed on project line of earth bed, comprising perforated drain pipe with extensions to slopes of earth bed and filtering coarse-grained material installed within the limits of draining layer and below by foundation width. Draining layer used in drying section is material with filtration coefficient that exceeds value of material filtration coefficient at approaches to this section, preferably at least 10 m/day, and distance from top of curve to borders of efficient drying sections is determined by product of curve radiuses by border slopes.

EFFECT: efficient drying of draining layer in road carpet in period of structure thawing in concave sections of longitudinal profile with zero inclination in top of curve on project line of earth bed and limited by opposite slopes of at least two ppm, and also higher efficiency of drying and prevention against deformations and damages of earth bed and road carpet.

3 dwg