TRANSPORT JUNCTION AND METHOD FOR CONSTRUCTION THEREOF Russian patent published in 2016 - IPC E02D29/09 

FIELD: construction.

SUBSTANCE: invention relates to underwater structures and can be used in construction of automobile and railway tunnels under reservoirs. Transport passage contains an underwater tunnel placed in water under the navigable channel of a water reservoir or strait made of interconnected reinforced concrete monolith sections positioned relative to the surface of the reservoir or strait bottom and provided with transport infrastructure, consisting of two transport purpose trackways with a rail track between, while the latter is separated by arch colonnades from auto transport carriageways; adjoining the opposite banks of a water reservoir or strait spanned bridges of reinforced concrete structures to ensure water exchange directly along the shores made with transport infrastructure, consisting of two auto transport carriageways with a rail track between, and inclined access ways connecting the underwater tunnel with the spanned bridges having transport infrastructure, consisting of two auto transport with a rail track between. Reinforced-concrete monolith sections of the underwater tunnel, having a two-layer covering, are laid on a base in the form of a reinforced concrete plate, serving as a balance weight for implementation of the injection strengthening of soil under the tunnel base and enlargement of the area of the tunnel supporting on the reservoir or strait bottom with a specific pressure of not more than the pressure of from soil retracted during preparation of a pit for accommodating of the two-layer base. Throughout the whole length of the tunnel along its whole perimeter and between the layers of the bottom and the base there is stretched an anti-filtration coating of geo-membrane, protected by backfilling of the tunnel side walls supported by inclined outer faces of the tunnel walls from heavy loam. Inclined accesses connecting the underwater tunnel with spanned bridges, at least on a part of their length, are made in the embankment with arrangement of the remaining part of length in the groove, relative to the bottom of a water reservoir or strait, separated from its water area on both sides by earth dams and supporting walls and by strengthened on the external slopes rock mass. Above the reinforced concrete monolith sections of the underwater tunnel in the navigable channel there is a protective reinforced concrete plate resting on backfills of side walls of the tunnel and being a bottom of the navigable channel going from which are vertically oriented conjugated abutments, which are the walls of the navigable channel.

EFFECT: higher operational reliability and longer service life of the structure, simplification of construction technology and structure design.

7 cl, 4 dwg