UPPER TRANSVERSE ABUTMENT OF APPROACH TUNNEL TO OPERATING METRO STATION, CONSTRUCTED WITHOUT INTERRUPTION OF OPERATION OF STATION WITH MIDDLE AND SIDE TUNNELS

摘要

FIELD: construction.;SUBSTANCE: invention relates to underground construction and can be used in need of abutting approach tunnel to operating station of underground deep without side platforms. Upper transverse abutment of approach tunnel to existing metro station, constructed without interruption of operation of station with middle and side tunnels, made of prefabricated tubing, and including approach tunnel arranged above side tunnels, and transverse chamber with arch and walls. Adjunction is made within passenger area of existing metro station without side platforms and is equipped with reinforcement elements of station central tunnel, which include rigidly interconnected reinforced concrete foundation plate, monolithic columns and support plate, wherein support plate has hinged resting against walls of prefabricated cast iron elements located between middle and side tunnels, as well as monolithic arches rigidly connected to the support plate and tightly adjacent to the roof of the station central tunnel, providing spatial stiffness of the structure of the tunnel central tunnel and serving to support the arch and walls of the transverse chamber.;EFFECT: technical result consists in improvement of efficiency of construction works and reliability of design of upper transverse contiguity of approach tunnel to existing metro station without side platforms within passenger station zone.;1 cl, 2 dwg