Prefabricated overlapped wet connection rail top air duct structure

Abstract

The utility model relates to the technical field of rail traffic, in particular to a prefabricated overlapped wet connection rail top air duct structure which comprises a top plate, two side plates and a bottom plate of a prefabricated rail top air duct formed by concrete pouring, connecting steel bars are embedded in the top faces of the side plates, one end of each side plate is provided with an outwards-protruding inserting opening, and the other end of each side plate is provided with an inwards-contracting inserting opening. The thickness of the top plate is half of the thickness of the main body structure middle plate, and horse stool ribs are embedded in the upper surface of the top plate. The prefabricated rail top air duct structure can be connected with a middle plate of a main body structure through a wet connection method in the later period, unsafe factors caused when the prefabricated rail top air duct is connected with the middle plate through a connecting piece are eliminated, firmness is high, meanwhile, the construction period is shortened, and the construction progress is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a prefabricated superimposed wet-jointed rail top air duct structure. Background Art

[0002] There are two conventional methods for track-top air ducts. One is to plant reinforcement in the middle plate after the construction of the main structure is completed, reinstall the formwork and support system, and reserve a concrete pouring port in the middle plate to complete the pouring of the track-top air duct; the other is to first complete the pouring of the track-top air duct, and then use the bottom plate of the track-top air duct to support the frame to the middle plate after the concrete structure of the track-top air duct reaches the design strength, and then pour the middle plate uniformly. Both of these conventional processes have the problems of long on-site construction period and high difficulty, which affects the overall construction progress and increases the construction cost.

[0003] In order to quickly construct secondary structures, many prefabricated track-top air duct structures have appeared. However, most of the current prefabricated track-top air ducts are completely prefabricated in factories, and then the prefabricated track-top air ducts are fixedly connected to the middle plate of the main structure on site through bolts and other connectors. Although the track-top air ducts constructed in this way shorten the construction period and speed up the construction progress, the prefabricated track-top air ducts are concrete structures with heavy weight. If they are connected to the middle plate by bolts and other connectors, the firmness is far from reaching the connection force formed by concrete pouring, which poses a safety hazard in the later stage. Summary of the invention

[0004] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide a prefabricated composite wet-jointed rail top air duct structure.

[0005] The present invention is achieved through the following technical solutions:

[0006] A prefabricated composite wet-jointed rail top air duct structure, comprising a top plate, two side plates and a bottom plate of a prefabricated rail top air duct formed by pouring concrete, a plurality of outwardly bent connecting steel bars are evenly pre-embedded on the top surface of the side plates along the length direction of the side plates, one end of the side plates is provided with an outward convex socket, and the other end is provided with an inward retracted socket, and adjacent side plates are butt-jointed together via the outward convex socket and the inward retracted socket; the thickness of the top plate is half of the thickness of the plate in the main structure, and horse stool bars are pre-embedded on the upper surface of the top plate.

[0007] Preferably, the top plate is 20 cm thick.

[0008] Preferably, the horse stool reinforcements are arranged in a plum blossom pattern on the upper surface of the top plate.

[0009] Preferably, the prefabricated rail top air duct is 1 m long.

[0010] The prefabricated overlapping wet-jointed rail top air duct structure of the present invention can be connected to the middle plate of the main structure by the wet-joining method in the later stage, eliminating the unsafe factor of connecting the prefabricated rail top air duct with the middle plate through connecting parts, and has high firmness, while shortening the construction period and accelerating the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0012] Figure 2 This is a schematic diagram of the structure after the side panels and bottom panels of the prefabricated rail top air duct in this embodiment are manufactured;

[0013] Figure 3 This is a schematic diagram of the support structure of the top plate template of the prefabricated rail top air duct in this embodiment;

[0014] Figure 4 This is a schematic diagram of the reinforcement binding structure of the top plate of the prefabricated rail top air duct in this embodiment;

[0015] Figure 5 This is a schematic diagram of the connection structure between the prefabricated rail top air duct and the middle plate steel bars in this embodiment.

[0016] In the figure, 1 is the top plate, 2 is the side plate, 3 is the bottom plate, 4 is the connecting steel bars, 5 is the outward protruding sockets, 6 is the inward retracted sockets, and 7 is the horse stool bars. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0018] The present embodiment includes a top plate 1, two side plates 2 and a bottom plate 3 of a prefabricated rail top air duct formed by concrete pouring. The prefabricated rail top air duct is formed by pouring concrete in advance in a factory. Preferably, the length of each prefabricated rail top air duct is 1m. The prefabricated rail top air duct of the present invention is different from the existing prefabricated rail top air duct in the following aspects:

[0019] The thickness of the top plate 1 of the present invention is half of the thickness of the plate in the main structure. Generally, the thickness of the plate in the main structure is 40 cm. Therefore, in this embodiment, the thickness of the top plate 1 is preferably 20 cm, that is, during prefabrication, the concrete of the top plate 1 is only poured to half of the thickness, and the entire top plate 1 is not completely prefabricated. Horse stool reinforcement 7 is embedded in the upper surface of the top plate 1, and the horse stool reinforcement 7 exposed on the upper surface of the top plate 1 is an inverted U-shape. The horse stool reinforcement 7 is fixed together with the steel bars in the top plate 1, and the horse stool reinforcement 7 is preferably arranged in a plum blossom shape on the upper surface of the top plate 1.

[0020] The top surfaces of the side panels 2 on both sides of the present invention are uniformly pre-embedded with a plurality of outwardly bent connecting steel bars 4 along the length direction of the side panels 2. The connecting steel bars 4 are used to be tied together with the steel bars of the middle panel later. An outward convex socket 5 is provided at one end of the side panel 2, and an inward retracted socket 6 is provided at the other end. Adjacent side panels 2 are butt-jointed together through the outward convex socket 5 and the inward retracted socket 6.

[0021] The manufacturing process of the prefabricated rail top air duct of the present invention is as follows:

[0022] First, tie the bottom plate 3 and the side plate 2 steel bars, reserve the connecting steel bars 4 bent outward at the top of the side plate 2, support the side plate formwork and the bottom plate formwork, set the side plate formwork with the protruding socket 5 and the inward socket 6, and then pour the concrete for the first time to form the bottom plate 3 and the two side plates 2 prefabricated on the top of the rail duct, as shown in the attached figure. Figure 2 As shown, the connecting steel bar 4 is exposed from the top surface of the side plate 2, becoming the pre-buried connecting steel bar 4; then the top plate formwork is supported above the side plate 2, as shown in the attached Figure 3 As shown, the top plate reinforcement is tied, the top plate reinforcement is tied together with the pre-buried connecting reinforcement 4 of the side plate 2, and a horse stool reinforcement 7 is reserved in the top plate 1, and the horse stool reinforcement 7 is tied and fixed together with the top plate reinforcement, as shown in the attached Figure 4 As shown, concrete is poured again to form a top plate 1 with a thickness of 20 cm, and the horse stool reinforcement 7 is exposed on the upper surface of the top plate 1. At this point, the prefabricated track top air duct is completed, as shown in the attached Figure 1 As shown, the prefabricated rail top air duct can be put into use after 28 days of curing.

[0023] Because the thickness of the top plate 1 of the prefabricated track top air duct of the present invention is only half of the thickness of the middle plate of the main structure, it can also be said that the thickness of the top plate 1 is only half of the thickness of the top plate of the normal track top air duct, and the connecting steel bars 4 are reserved on the side plates 2, and the horse stool bars 7 are reserved on the top plate 1, the prefabricated track top air duct of the present invention can be poured together with the middle plate concrete of the main structure in the later stage, and connected with the middle plate of the main structure by wet connection method, instead of the traditional connection through connecting parts, which greatly enhances the firmness. The following briefly introduces the steps of the construction of the connection between the prefabricated track top air duct of the present invention and the middle plate of the main structure in the later stage:

[0024] Add support under the prefabricated rail top air duct to push its top to a height that can be connected with the middle plate. The adjacent prefabricated rail top air ducts are butt-connected through the protruding socket 5 and the retracted socket 6. Figure 5 As shown, the middle plate reinforcement is tied, the main reinforcement of the middle plate is passed through the horse stool reinforcement 7, the connecting reinforcement 4 is tied together with the lower layer of the middle plate force reinforcement, and then the concrete is poured into the middle plate of the main structure, and the middle plate and the prefabricated track top air duct top plate 1 are poured together, so that the other half of the top plate 1 is wet-connected with the middle plate.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prefabricated composite wet-jointed rail top air duct structure, comprising a top plate (1), two side plates (2) and a bottom plate (3) of a prefabricated rail top air duct formed by pouring concrete, characterized in that: The top surface of the side panel (2) is pre-embedded with a plurality of outwardly bent connecting steel bars (4) uniformly along the length direction of the side panel (2); one end of the side panel (2) is provided with an outwardly protruding socket (5) and the other end is provided with an inwardly retracted socket (6); adjacent side panels (2) are butt-jointed together via the outwardly protruding socket (5) and the inwardly retracted socket (6); the thickness of the top panel (1) is half the thickness of the middle panel of the main structure, and a saddle bar (7) is pre-embedded on the upper surface of the top panel (1).

2. The prefabricated composite wet-jointed rail top air duct structure according to claim 1 is characterized in that: The top plate (1) has a thickness of 20 cm.

3. The prefabricated composite wet-jointed rail top air duct structure according to claim 1 is characterized in that: The length of the prefabricated rail top air duct is 1m.

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