A prefabricated track plate with adjustable track surface elevation and direction

Abstract

The utility model relates to prefabricated track slab technical field, concretely relates to a prefabricated track slab with adjustable track surface elevation and direction, the prefabricated track slab body is provided with reserved sleeper installation foundation pit, the prefabricated track slab body is provided with reserved vertical reinforcement, the upper end of reserved vertical reinforcement is inserted in the reserved sleeper installation foundation pit, and the lower end is projected on the bottom surface of the prefabricated track slab body, and the reserved vertical reinforcement is used for connecting with the sleeper truss reinforcement of prefabricated short sleeper. The utility model has the advantages of realizing track surface elevation and direction adjustment, improving the connecting performance between prefabricated track slab and prefabricated short sleeper, improving the connection between prefabricated track slab and lower concrete bed, simple and reasonable structure, high prefabricated degree, convenient construction and suitability for promotion.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated track slab technology, specifically to a prefabricated track slab with adjustable track surface elevation and direction. Background Technology

[0002] Currently, with the rapid development of prefabrication technology, prefabricated track slabs and prefabricated sleepers are commonly used in rail transit construction. Both can be prefabricated in factories and transported to the site for installation, offering advantages such as high component quality and fast construction. However, during construction, because the surface height of prefabricated track slabs is uniform, sleepers designed to be installed on them lack adjustment capabilities, making it impossible to adjust their installation height. This results in the rail surface elevation and orientation being unable to be adjusted. Even if adjustments are made by adding pads under the sleepers, it increases construction difficulty, raises project costs, and cannot guarantee the connection performance between the sleepers and the prefabricated track slabs. Summary of the Invention

[0003] The purpose of this utility model is to address the shortcomings of the prior art by providing a prefabricated track slab with adjustable rail surface elevation and orientation. By setting a reserved sleeper installation pit on the prefabricated track slab, the prefabricated short sleepers have the ability to be adjusted within the space provided by the reserved sleeper installation pit, thereby realizing the adjustment of rail surface elevation and orientation.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A prefabricated track slab with adjustable track surface elevation and direction includes a prefabricated track slab body, characterized in that: the prefabricated track slab body is provided with a reserved sleeper installation pit, the prefabricated track slab body is provided with reserved vertical reinforcing bars, the upper end of the reserved vertical reinforcing bars extends into the reserved sleeper installation pit, and the lower end extends out of the bottom surface of the prefabricated track slab body, the reserved vertical reinforcing bars are used to connect with the sleeper truss reinforcing bars of the prefabricated short sleepers.

[0006] Along the track direction, the precast track slab body is provided with several reserved sleeper installation pits arranged at intervals, and each reserved sleeper installation pit is independently provided with the reserved vertical steel bars.

[0007] The reserved vertical steel bars are connected to each other by reserved longitudinal steel bars to form a whole.

[0008] The precast track slab body has through injection holes and vent holes.

[0009] An injection hole is provided in the middle of the precast track slab body; an exhaust hole is provided on both sides of the injection hole along the track direction.

[0010] When the prefabricated short sleeper is installed into the reserved sleeper installation pit, the reserved sleeper installation pit is filled with fast-hardening cement-based grout.

[0011] The advantages of this utility model are: it can realize the adjustment of rail surface elevation and direction; it not only improves the connection performance between the precast track slab and the precast short sleeper, but also improves the connection between the precast track slab and the concrete track bed below; the structure is simple and reasonable, the degree of prefabrication is high, the construction is convenient, and it is suitable for promotion. Attached Figure Description

[0012] Figure 1 This is a front view of the present invention;

[0013] Figure 2 This is a top view of the present invention;

[0014] Figure 3 This is a side view of the present invention;

[0015] Figure 4 This is a front view of the present invention after the prefabricated short sleepers have been installed;

[0016] Figure 5 A top view of this utility model after the prefabricated short sleepers have been installed;

[0017] Figure 6 This is a side view of the present invention after the prefabricated short sleepers have been installed. Detailed Implementation

[0018] The features of this utility model and other related features will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0019] like Figure 1-6 As shown in the figure, numbers 1-9 represent: 1. Precast track slab, 2. Reserved sleeper installation pit, 3. Grouting hole, 4. Reserved vertical reinforcement, 5. Reserved longitudinal reinforcement, 6. Rapid-hardening cement-based grouting material, 7. Precast short sleeper, 8. Sleeper truss reinforcement, and 9.

[0020] Example: Figures 1 to 6 As shown, the prefabricated track slab with adjustable track elevation and direction in this embodiment includes a prefabricated track slab 1, the length and width of which are manufactured according to the track design requirements.

[0021] Combination Figures 1 to 3 As shown, several reserved sleeper installation pits 2 are provided on the precast track slab 1. Two rows of reserved sleeper installation pits 2 are arranged at intervals along the vertical direction of the track, and each row includes several reserved sleeper installation pits 2 arranged at equal intervals along the track direction. If each reserved sleeper installation pit 2 is used independently for installing precast short sleepers 8.

[0022] Combination Figure 4 and Figure 5 As shown, each reserved sleeper installation pit 2 on the precast track slab 1 is equipped with a reserved vertical steel bar 5. The upper end of each reserved vertical steel bar 5 extends into the reserved sleeper installation pit 2, and the lower end extends out of the bottom surface of the precast track slab 1. Figure 6 As shown, during use, the reserved vertical steel bar 5 is located inside the reserved sleeper installation pit 2 to connect with the sleeper truss steel bar 9 of the prefabricated short sleeper 8, thereby strengthening the connection performance between the prefabricated short sleeper 8 and the prefabricated track slab 1.

[0023] When the prefabricated short sleeper 8 is installed in the reserved sleeper installation pit 2, since the reserved sleeper installation pit 2 is recessed into the prefabricated track slab 1 and the size of the pit is larger than the outer contour size of the prefabricated short sleeper 8, the reserved sleeper installation pit 2 provides adjustment space for the prefabricated short sleeper 8, so that the position and elevation of the prefabricated short sleeper 8 can be adjusted as needed during installation, thereby realizing the adjustment of the rail surface elevation and direction of the rail installed on the prefabricated short sleeper 8.

[0024] like Figure 1 or Figure 5 As shown, a grouting hole 3 and two venting holes 4 are provided in the middle of the precast track slab 1. The grouting hole 3 is used to pour self-compacting concrete or other grouting materials into the bottom of the precast track slab 1, while the venting holes 4 are used to expel air during grouting to ensure the compactness of the grouting. After the precast track slab 1 is hoisted and positioned, a foundation is formed below the precast track slab 1 through the grouting hole 3. During this process, each reserved vertical steel bar 5 is poured into the grouting material. After the grouting material solidifies, the reserved vertical steel bars 5 can significantly improve the connection performance between the precast track slab 1 and the grouting material.

[0025] In this embodiment, as Figure 1 or Figure 4 As shown, the portions of each reserved vertical reinforcing bar 5 extending beyond the bottom surface of the precast track slab 1 are further connected by reserved longitudinal reinforcing bars 6 to form an integral structure, thereby enabling the precast track slab 1 to fully cooperate with the foundation below in bearing the load. Furthermore, since the portions of the reserved vertical reinforcing bars 5 located within the reserved sleeper installation pit 2 ensure a stable connection between the reserved short sleeper 8 and the precast track slab 1, the reserved short sleeper 8, the precast track slab 1, and the foundation below in this embodiment can form a stable overall structure, ensuring structural and operational performance during use.

[0026] Combination Figure 1 and Figure 4As shown, after the prefabricated short sleeper 8 is hoisted into the reserved sleeper installation pit 2 and its position and elevation are fully adjusted, the reserved sleeper installation pit 2 is filled with quick-setting cement-based grouting material 7, so that the prefabricated short sleeper 8 is fixed in the prefabricated sleeper installation pit 2.

[0027] When this embodiment is implemented, it includes the following steps:

[0028] 1) Prefabrication of precast track slab 1 and precast short sleepers 8. During the prefabrication of track slab 1, the reserved vertical reinforcing bars 5 and reserved longitudinal reinforcing bars 6 are simultaneously fabricated, ensuring that the reserved vertical reinforcing bars 5 have portions located within the reserved sleeper installation pit 2 and portions extending beyond the bottom surface of the precast track slab 1. The reserved longitudinal reinforcing bars 6 are welded to the portions of each reserved vertical reinforcing bar 5 extending beyond the bottom surface of the precast track slab 1. During the prefabrication of the precast short sleepers 8, the sleeper truss reinforcing bars 9 are simultaneously fabricated.

[0029] 2) Transport the precast track slab 1 and precast short sleepers 8 to the site. During transportation, care should be taken to avoid damage to the steel bars extending from the precast track slab 1 or the precast short sleepers 8.

[0030] 3) Hoist the precast track slab 1 to the designed position to complete its installation.

[0031] 4) Hoist the precast short sleepers 8 into the precast sleeper installation pits 2 reserved on the precast track slab 1, and adjust the position and elevation of the precast short sleepers 8 according to the design requirements. After completion, weld the precast short sleepers 8 to the reserved truss steel bars 9 and the reserved vertical steel bars 5 in the precast sleeper installation pits 2, and then fill the precast sleeper installation pits 2 with quick-setting cement-based grouting material 7 to complete the construction.

[0032] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A prefabricated track slab with adjustable track surface elevation and orientation, comprising a prefabricated track slab body, characterized in that: The precast track slab body is provided with a reserved sleeper installation pit, and the precast track slab body is provided with reserved vertical steel bars. The upper end of the reserved vertical steel bars extends into the reserved sleeper installation pit, and the lower end extends out of the bottom surface of the precast track slab body. The reserved vertical steel bars are used to connect with the sleeper truss steel bars of the precast short sleepers.

2. The prefabricated track slab with adjustable track surface elevation and direction according to claim 1, characterized in that: Along the track direction, the precast track slab body is provided with several reserved sleeper installation pits arranged at intervals, and each reserved sleeper installation pit is independently provided with the reserved vertical steel bars.

3. A prefabricated track slab with adjustable track surface elevation and direction according to claim 2, characterized in that: The reserved vertical steel bars are connected to each other by reserved longitudinal steel bars to form a whole.

4. A prefabricated track slab with adjustable track surface elevation and direction according to claim 1, characterized in that: The precast track slab body has through injection holes and vent holes.

5. A prefabricated track slab with adjustable track surface elevation and direction according to claim 4, characterized in that: An injection hole is provided in the middle of the precast track slab body; an exhaust hole is provided on both sides of the injection hole along the track direction.

6. A prefabricated track slab with adjustable track surface elevation and direction according to claim 1, characterized in that: When the prefabricated short sleeper is installed into the reserved sleeper installation pit, the reserved sleeper installation pit is filled with fast-hardening cement-based grout.

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