SINGLE-VAULTED SUBWAY STATION ARRANGED IN DOUBLE-TRACK MAIN LINE TUNNEL

摘要

FIELD: construction.;SUBSTANCE: invention relates to construction, namely, to underground structures of metro stations. Single-vane multilevel station of deep underground station, having building system of stop point of underground transport with overall dimensions, formed by maximum length of rolling stock, height of cars H, width of cars (base) B_c, with protective devices of civil defense includes structures, technical devices and facilities for servicing and ensuring safety of passengers and operational personnel of the station, which is arranged in a double-track main line tunnel. Metro station is made in single compact underground building complex from construction system of stop point with protective devices of civil defense and additional system of structures arranged in vertical soil working above stopping point, building complex with structures of external load-bearing walls forms central distribution hall, including stairs for lowering on landing platforms to movable composition, ventilation chambers, service rooms, water-drain plant. Underground building complex can be connected to the ground vestibule by means of an escalator tunnel. Each landing platform is located between cars of rolling stock and has maximum possible width and useful area in plan, depending on overall dimensions of rolling stock and inner diameter of the haulage tunnel. Landing platforms of different directions are spaced along the length of the haulage tunnel relative to the central distribution hall and are separated from each other and the rail track is not directed by the strong sound-absorbing wall, platforms of different directions are separated from rail track of their direction by strong automatically retracting safety barriers or turnstiles installed opposite corresponding doors of cars, platforms of different directions are structurally connected to each other by stairs. Landing platforms are equipped with upper unified bearing elements made in the form of profiled hingeless arches-overlaps above the platform and paths, and lower unified bearing elements, made in the form of profiled hingeless foundation plates for rail tracks and, in fact, landing platform, unified bearing elements are hingedly resting on inner walls of the haulage tunnel and are equipped with thrust pads along contact lines. Bearing pads close to protective devices of civil defense can be equipped with plate-like elastoplastic springs made on the basis of thermoelastic damping titanium-nickel alloy with shape memory effect. For passengers upsetting-landing the whole width B_p is used landing platform evaluated by the following relationship: B_p=a((D²-H²)^0.5-2B_a), where a – empirical correcting coefficient, D – inner diameter of the main line tunnel.;EFFECT: technical result consists in provision of structural simplification of metro station, reduction of construction and operational costs, reduction of negative effect of station construction by underground method on earth surface and surrounding buildings, provision of improved convenience and sufficient safety of passengers, due to optimal arrangement of transitions, platform, use of turnstiles during normal operation of underground.;1 cl, 5 dwg