HIGH SPEED MAIN ROAD Russian patent published in 2018 - IPC E01B1/00 E01B2/00 

FIELD: construction.

SUBSTANCE: invention relates to the construction and reconstruction of railways on the bases with insufficient bearing capacity for high-speed rail transport. High-speed main road bed contains the embankment body on which the layer of asphalt concrete is laid. Bored piles are installed at the base of the roadbed. Distance between the piles is 2–3 times the diameter of the pile. Umbankment body contains two protective layers. One protective layer consists of a crushed stone-sand mixture with a deformation module of at least 80 MPa, and the second protective layer consists of a gravel-gravel-sand mixture with a 120 MPa deformation module. Thickness of the first protective layer is 5.25–5.75 times greater than the thickness of the second protective layer.

EFFECT: increase in the reliability and durability of the operation of the ballastless upper track structure on bases with insufficient bearing capacity is achieved.

1 cl, 1 dwg