ROADBED AND ROADBED FORMING METHOD Russian patent published in 2006 - IPC E01C3/06 

FIELD: road building, particularly methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration.

SUBSTANCE: roadbed arranged on ground comprises base, water drainage channels extending along the base, reinforcing device located on the base and embankment formed over reinforcing device. Reinforcing device comprises drainage cuts and sand-gravel mix located in the cuts. The drainage cuts are formed in ground base and extend across roadbed for depth exceeding base height and reaches filtering ground level. The drainage cuts have width and pitch providing ground consolidation in road building period. Reinforcing layer is arranged over drainage cuts to provide liquid filtering in all directions without reinforcing layer properties change as load applied to roadbed increases. Sand-gravel mix compacted with vibrorollers is also arranged on reinforcing layer. Method involves forming drainage cuts across roadbed, wherein the drainage cuts have width and pitch providing ground consolidation in road building period and depth equal to depth of filtering ground location; filling the cuts with sand-gravel mix; compacting thereof; arranging reinforcing layer over the drainage cuts; pouring sand-gravel mix over the reinforcing layer; compacting sand-gravel mix and forming embankment including several layers. Each embankment layer is compacted with vibrorollers.

EFFECT: increased load-bearing capacity and increased rate of base ground consolidation.

8 cl, 4 dwg