TUNNEL WITH SUB-ZERO AIR TEMPERATURE IN WINTER IN ITS INTERIOR PART Russian patent published in 2019 - IPC E02D29/05 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, namely to the construction of underground structures or tunnel. Tunnel with a negative in winter temperature of air in its inner part contains along its length a central section located at the calculated depth, and two transitional open-top sections connecting the central part with the ground surface, all three sections in cross-section contain a tray with a roadway above it and concrete walls and are made continuous without deformation joints. Tunnel contains a thermo-regulating coating, a drainage layer, drainage pipes, and all the concrete elements of the tray, walls and floors contain organized cracks. Drainage layer is located on the surface of the tray and the walls from the inside of the tunnel. Thermostatic coating is located directly on the drainage layer throughout this layer. Drainage pipes are located in the lower part of the tray and are connected by channels to the drainage layer. Organized cracks are located simultaneously over the entire cross-section of concrete, formed at the sites of targeted weakening of the concrete section at design points and injected with a composition having a strength not less than concrete, the distance along the length of the tunnel between the organized cracks is assigned by calculation.

EFFECT: technical result consists in increasing the durability of the tunnel, providing a significant improvement in operating conditions.

6 cl, 15 dwg