ROAD EMBANKMENT BUILT ON PERMAFROST GROUND Russian patent published in 2005 - IPC

FIELD: building, particularly for constructing road embankments on permafrost ground bases.

SUBSTANCE: road embankment comprises embankment body, ballast section formed on the main embankment area and heat insulation layer. Road embankment has side auxiliary ground bodies having h_b heights and B_b widths located from ballast section sides within the boundaries of the main embankment area on natural ground surface at embankment slope base. Embankment body includes three layers, namely lower layer having h_l height, medium layer having h_m height and upper one having h_u height. Upper layer is made of drainage soil. Heat insulation layer having R_h thermal resistance is located on leveling layer of dry frozen sand immediately under side auxiliary ground body. Heat insulation layer extends from its bottom to medium layer top surface and then over the top surface to vertical plane passing through the edge of main embankment area. Auxiliary ground body h_b height is defined to increase convenience of mechanized embankment forming and is equal to 0.3 - 0.7 m in separate areas thereof. Main embankment dimensions are determined from predetermined conditions.

EFFECT: increased embankment stability and durability.

2 cl, 1 dwg