METHOD FOR VEHICLE CONVEYING OVER ICE COVER Russian patent published in 2006 - IPC E01D15/14 

FIELD: movable or portable bridges, floating bridges adapted to convey loads over ice cover.

SUBSTANCE: method to transport vehicle having weight exceeding load-carrying ability of ice cover over ice involves moving vehicle having weight not exceeding load-carrying ability of ice cover at resonance speed; moving vehicle having weight exceeding load-carrying capacity to ice cover line when above vehicle having lesser weight has moved away from ice cover line for distance equal to 2/3 of resonance bending-gravity wave length; initiating above vehicle having larger weight movement with above resonance speed. Resonance bending-gravity wave length is determined from where D is cylindrical stiffness of ice plate, ρ and h - ice density and thickness, g - gravity, H - water body depth.

EFFECT: increased load-bearing capacity of ice cover.

1 dwg