RU219380U1 - Inter-track reinforced concrete slab - Google Patents

Abstract

The utility model "Inter-track reinforced concrete slab" (hereinafter referred to as the "Slab") is used in the field of road construction in terms of arranging pavement elements at intersections at the same level of roads with a rail track (tram or railway) or arranging a roadbed, combined at the same level with a rail track. The proposed design of the slab with structural elements for redistributing the load (the weight of the slab and vehicles) on the top and bottom of the “rail neck” (upper curved bearing surface), on the sleepers of the rail grid (lower distributed bearing surface), elements for ensuring the safety of the rail fastening with the sleeper, elements for organizing the creation of an end lock in mating slabs, elements for reinforcing the slab in the diagonal plane solves the problem of creating roadway elements for alignment on at the same level of road and rail transport and meeting the requirements of standards for the construction, operation of rail tracks, rail transport, the manufacturability of the production of plates, improving the operational characteristics of plates, expanding the existing arsenal of technical means for the purpose in question. 6 ill.

Description

Field of technology to which the utility model belongs

An inter-track reinforced concrete slab (hereinafter - MTP or Slab) is used in the field of road construction in terms of arranging pavement elements at intersections at the same level of roads with a rail track (tram, as well as a railway) or arranging a roadbed, combined at the same level with a rail track.

State of the art

The prior art in the area under consideration (arrangement of road and rail transport roads crossing at the same level or roadway, combined at the same level with the rail track) is disclosed in standards, monographs, descriptions for patents. The analogues of the means known to the applicant that have a purpose coinciding with the purpose of the claimed utility model include the following:

- GOST 19231.0-83, "Reinforced concrete slabs for covering tram tracks" (Approved and put into effect by the Decree of the USSR State Committee for Construction of January 26, 1983 No. 18), according to which the slabs have a reinforced frame, the shape of the slab is rectangular with surfaces - top, bottom, side and end faces. The slabs are laid on a compacted sand or gravel base of the ballast layer of the track, in the absence of fastening of the slabs along the roadway, which does not provide the required uniformity of laying the slabs along the rail track.

- Monograph: Timofeev A.A. "Prefabricated concrete and reinforced concrete pavements of urban roads and sidewalks" - M .: Stroyizdat, 1986, p. 88, 89, 256-258, fig. 88, 286-293, which describes various types of reinforced concrete pavements for tram tracks not only in the Russian Federation, but also abroad. Reinforced concrete slabs for double-track rail track are subdivided into inter-rail, inter-track and curb slabs. The slabs are laid on a compacted sand or gravel base of the ballast layer of the track, exceeding the level of the surface of the sleepers by 2-3 cm, butt-joined at the ends with joint sealing with cement mortar or bituminous mastic, have on the side surfaces mated in the rails, free space for the fastening elements of the rails to the rail and sleeper grid, the space between the side surface of the curb slab and the road surface is filled with some kind of sealing agent, for example, lean concrete ohm, crushed stone, asphalt concrete or bituminous mastic, and the space between the rails and the side faces of the slabs is filled with lean concrete, crushed stone, asphalt concrete or bituminous mastic with the planned system for collecting and removing atmospheric precipitation. The considered type of slabs does not provide a uniform tight support of the slabs on the underlying layer and a tight one-level fit of the ends of the slabs, which affects the operational reliability and service life of the coating.

- Reinforced concrete slab for covering tram tracks according to the technical solution for utility model RU 157554 U1 (dated April 30, 2014) is used in the manufacture of elements of transport tracks, in particular rail tram tracks. The slab includes a spatial reinforced frame, the upper and lower surfaces, the side edges are trapezoidal, the lateral edges of the slab are symmetrical and converge to the bottom part of the slab with uneven bevels, the end edges of the slab have a radial protrusion along the axis of the ends on one side, and a radial trough on the other side and, when adjacent plates are connected, their lock connection is formed. The slab is laid on the rail-and-sleeper grid through rubber profiles, which abut against the neck of the rail and against the foot of the rail.

- Inter-rail, inter-track and rounded reinforced concrete slabs according to the technical solution according to RU 2155838 (dated May 26, 1999) rest with their lower surfaces through rubber pads on the sleepers of the rail-sleeper grid, which ensures the evenness of the surfaces of the mating slabs, guaranteed by the flatness of the rail-sleeper grid. The ends of adjacent plates have protrusions in the form of a longitudinal ridge on one side, and a cavity in the mating plate, while the ridge and cavity have the shape of an isosceles triangle, which ensures locking connection of the ends of adjacent plates through a rubber gasket. The space between the edge of the rail and the side edges of the plates is sealed with rubber bars, the surface of their interface with the rail repeats the configuration of the “rail neck”, the surface of the interface between the bar and the side edge of the plate repeats the configuration of the side edge of the plate, and in the lower parts of the rubber bars there are cutouts for fastening elements of the rail with the sleeper. The thickness of the intertrack slab provides, after laying the slab on the rail and sleeper grid, the air gap between the surface of the ballast layer between the tracks and the bottom of the slab.

- Group of technical solutions RU 43884 (Е01С 9/06, 10.02.2005), RU 2382135 (Е01С 9/06, 20.02.2010), RU 98757 (Е01С 9/06, 10.27.2010), RU 137556 (Е01С 9/06, 20 .02.2014), RU 152864 (Е01С 9/04, 06/20/2015), with a similar design of the side faces of the plates with their support on the elements of the rail and sleeper grid through rubber bars, develops, among other things, options for the "lock" connection of the end faces of the plates in terms of the configuration of protrusions and depressions - a trapezoidal shape or a radius shape, which ensures improved manufacturability of the assembly of the road roadbed and its maintainability while maintaining the possibility of slight bending during the industrial operation of the crossing and / or roadbed.

As the closest analogue, which has a set of features closest to the set of essential features of the claimed utility model, the invention according to RU 2155838 (E01C 9/06 10.09.2000) "Prefabricated reinforced concrete pavement of tram tracks and method of its assembly" was chosen. Technical problem

When using the claimed utility model when arranging the crossing of motor vehicles and the rail track or arranging the roadway combined at the same level with the rail track, the following technical problems are solved:

- creation of an object, the parameters of which meet the requirements of standards for the construction of rail (tram or railway) tracks, the requirements of services operating rail tracks and rail transport;

- expansion of the arsenal of technical means for the arrangement of rail transport crossings or roadbeds combined with rail transport.

The solution to the technical problem of expanding the arsenal of technical means for arranging railway crossings or a roadway combined with a rail track is proposed through the practical implementation of the proposed technical solution, which is an alternative to the well-known solutions consumer characteristics - manufacturability of the slab life cycle (manufacturing, transportation, laying, maintainability of the roadway slabs), providing a gap between the bottom of the slabs and the ballast layer of the track, providing space for the safety of the rail fastening with the sleeper, wear resistance and preventing the destruction of the slab from the passage of heavy vehicles.

Disclosure of the essence of the utility model

The essence of the claimed utility model as a technical solution related to the device is characterized by the presence of a product (Slab) of several parts - a spatial diagonally reinforced three-dimensional frame of a certain shape, made of a certain material and a concrete mixture with certain characteristics, interconnected by assembly operations (pouring, compacting, etc., according to the specifications developed by the applicant), which ensures the constructive unity of the utility model.

The functional unity of the utility model, i.e. implementation of a general-purpose stove is provided by:

- certain characteristics of the applied concrete mix;

- the shape and design of the spatial volumetric frame, the material from which the spatial volumetric frame is made;

- the presence in the plane of the upper and lower grids of a spatial volumetric frame of V-shaped diagonal elements reinforcing the frame in order to strengthen the Slab under diagonal loads from passing vehicles when using the Slab for its intended purpose as an element of the crossing and / or arrangement of the roadway combined at the same level with the rail track;

- constructive implementation (formation based on the results of pouring the frame with a concrete mix) of the dimensions of the Slab with different thicknesses of individual parts of the slab and their relationship with the standardized dimensions of the rails used in the territory of the Russian Federation in the upper structure of the track (GOST R 51685-201 rail, RT62 rail GOST R55941-2014 or TU 14-2R-320-96, TU 5864-002 sleeper -09874445-2014);

- constructive execution (formation based on the results of pouring the frame with a concrete mix) of the Slab surfaces - the upper surface, bottom part, side and end faces of the Slab (as a whole and their parts), which have an independent functional purpose when using the Slab for its intended purpose as an element of the crossing and / or arrangement of the roadway combined at the same level with the rail track, in particular:

- side surfaces of the MTP Plate are mirror-symmetrical;

- structural elements of each of the side faces of the slab from the top surface of the slab to the bottom part have 5 angular bevels and one horizontal section, which form broken bearing surfaces to transfer the load (the weight of the slab and vehicles) to the top and bottom of the “rail neck” (upper curved bearing surface), to transfer the load to the sleepers of the rail grid (lower distributed bearing surface) and a broken surface to create volumetric space for the rail fastening elements with a sleeper;

- Structural elements of the end of the Slab in the form of protrusions and depressions with a radius surface for "cohesion" of adjacent slabs as part of the formed roadway;

- Structural elements of the Plate in the form of two through holes along the axis of the Plate to ensure the strapping of the Plate without its displacement along the axis of the strapping.

Disclosure of characteristics of features

Spatial reinforced frame of an intertrack tram slab (MTP) for R65 and T62 rails is a rectangle in longitudinal section (Fig. 1), an equal-arm trapezoid in cross section (Fig. 2), a rectangle in lateral section (Fig. 3), has an upper and lower mesh (reinforcement with a diameter of 8 and 10 mm, class A 500 s), reinforcement of the sides of the three-dimensional frame of a trapezoid shape, frame length 2970 ± 2 mm, frame width along the upper mesh 1650 ± 2 mm, reinforcement elements in the form of a twisted spring with a diameter of 150 ± 5 mm in increments of 40 ± 2 mm are installed along the frame axis at a distance of 450 mm from each edge, the reinforced frame is reinforced with diagonal V-shaped stiffeners in the horizontal plane of the upper and lower reinforcement meshes, the longitudinal sides of the frame are beveled. Concrete for pouring a three-dimensional frame has a flexural tensile strength class of Bbtb 3.6 and a compressive strength class of B40, provided that the actual compressive strength of the concrete should not be lower than 40 MPa. External dimensions of the MTP Plate (Fig. 4): length 3000 ± 2 mm, width along the upper surface of the Plate 1706 ± 2 mm, thickness to the bottom 170 ± 2 mm, weight 2040 ± 5 kg. The side faces of the Plate are mirror symmetrical and have 5 angular bevels and one horizontal section from the upper surface of the Plate to the bottom (Fig. 5). The end surface of the plates along the axis of the end on one side of the Plate has a radius protrusion R=29±2 mm, on the other side of the Plate a radius cavity R=31±2 mm (Fig. 6). The upper curvilinear supporting surface of the Plate, which performs the function of transferring during the industrial operation of the Plate, part of the load (the weight of the plate and passing vehicles) through the latch to the top and bottom of the "rail neck" is formed by bevel 1 and bevel 2 (Fig. 5). Bevel 1 63×3000±2 mm in size is formed at an angle of 85°±2° to the horizontal of the upper surface of the plate. Bevel 2 with a size of 84×3000±2 mm is formed at an angle of 140°±2° to bevel 1. The curved surface formed by bevels 3, 4 is formed to create a "volumetric space" during the installation of the Plate under the elements of rail fastening to the sleepers. Bevel 3 sized 74×3000±2 mm is formed at an angle of 135°±2° to the plane of bevel 2, bevel 4 sized 34×3000±2 mm is formed at an angle of 130±2° to the horizontal part of the Plate. The lower distributed support surface of the Slab, which performs the function of transferring part of the load (the weight of the slab and passing vehicles) during the industrial operation of the Slab through the spacers to the sleepers of the rail-sleeper grid, is formed by the surfaces of the horizontal section associated with the sleepers of the rail-sleeper grid. Horizontal section 195×3000±2 mm in size is located between bevels 4 and 5, bevel 5 25×3000±2 mm in size is formed at an angle of 143°±2° to the horizontal section. The bottom part of the MTP Plate measuring 930 × 3000 ± 2 mm is 170 ± 2 mm below the plane of the top of the plate and, when the top of the Plate is installed at the level of the rail head, rises above the ballast layer of the track by a value of 30 to 50 mm forming an air gap.

The technical result of the claimed utility model as a technical solution related to the device is manifested in the technical effects of using the utility model when arranging pavement elements at intersections at the same level of roads with a rail track (tram or railway), or arranging a roadbed combined at the same level with a rail track, in particular, in pairing the parameters and characteristics of the Plate with the requirements of standards for the construction, operation of rail tracks, rail transport, as well as in the practical implementation of the arrangement of railroad crossings or roadbed, combined with the rail track, the proposed technical solution as one of the objects from the existing arsenal of technical means for the purpose in question.

Brief description of drawings and other drawings

The essence of the claimed utility model is illustrated by drawings, on which:

in fig. 1 shows a top view of the spatial reinforcing cage of the MTP slab (upper and lower reinforcing meshes are not shown);

in fig. 2 shows a cross section of the reinforcing cage of the MTP slab (the upper and lower reinforcing meshes are not shown);

in fig. 3 shows a longitudinal section of the reinforcing cage of the MTP slab (the upper and lower reinforcing meshes are not shown);

in fig. 4 shows the MTP plate, top view;

in fig. 5 shows a cross section of the MTP slab;

in fig. 6 shows a longitudinal section of the MTP plate.

The three-dimensional model of the utility model is presented in electronic form.

Implementation of the utility model.

Pilot implementation of the MTP Plate began in 2013, with subsequent industrial application in Moscow, St. Petersburg, Taganrog. During the specified period of time, road slabs with a total area of 456,000 square meters were produced and put into operation.

Claims (1)

An intermediate reinforced concrete slab for arranging pavement elements at intersections at the same level of roads with a rail track (tram, as well as a railway) or arranging a roadbed aligned at the same level with a rail track, including a spatial reinforced frame, while the side edges are trapezoidal, the top surface of the slab, the bottom of the slab, the side and end edges of the slab, while the side edges of the slab are symmetrical and unequal dimensional bevels converge to the bottom of the slab, the end edges of the slab have a radial protrusion along the axis of the ends on one side, and a radial cavity on the other side, the upper curvilinear supporting surface of the slab, the lower distributive supporting surface of the slab, characterized in that two through holes are formed on the surface of the slab along its axis, the frame is reinforced in the plane of the upper and lower reinforced meshes with V-shaped diagonal reinforcing elements, the side edges of the reinforced concrete slab are made in the form five stepped bevels and a horizontal section converging to the bottom of the slab, while the bevels (1) and (2) of the side edges of the slab form the upper curved supporting surface of the slab with the possibility of resting on the rail, the horizontal part of the lateral edge of the slab forms the lower distributive supporting surface of the slab with the possibility of resting on the sleepers of the rail-sleeper grid, the bevels (3) and (4) of the side edges of the slab form a curved surface between the upper and lower supports with the possibility of creating a "volumetric space" for the elements of rail fastening to the sleepers, when laying the upper surface of the slab at the level of the rail head, the thickness of the slab of 170 mm is made with the possibility of forming a "volumetric space" under the bottom part of the slab.

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