Concrete guide table component for empty pushing station crossing and receiving of shield tunneling machine

Abstract

The utility model discloses a concrete guide table component for empty pushing station crossing and receiving of a shield tunneling machine. The structure comprises concrete guide table embedded steel bars, concrete guide table steel bars, concrete guide table straining beam steel bars, embedded steel plates, steel rails, concrete guide table straining beams and concrete guide tables. The concrete guide table component solves the problems that a steel structure support is not high in installation accuracy, not enough in safety and reliability, high in cost and long in construction period. In actual construction, the accuracy of the guide table component can be ensured only by controlling the top elevation, and the guide table component is a concrete component and is anchored with the bottom plate, so that the guide table component has enough safety and reliability, is convenient and rapid to construct and can effectively save the construction period. In addition, the guide table component does not need to be dismantled and can be directly used for bottom plate concrete backfilling, and the construction method is simple, easy to understand and beneficial to site construction.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary components for tunnel boring machines in rail transit construction, and specifically relates to a concrete guide platform component used for tunnel boring machines to push through stations and receive equipment. Background Technology

[0002] In urban rail transit construction, the components supporting the tunnel boring machine (TBM) during its no-load (no-load) passage through stations and during reception are mostly steel structure supports. These supports typically require high installation precision, but their stability and reliability cannot reach 100%. If deviations or insecure installation occur during installation or use, the TBM cannot be successfully received. Furthermore, the installation and dismantling of steel structure supports are complex and costly. Therefore, the accuracy and reliability of the support components are crucial for the successful reception of the TBM. However, currently, there is a lack of convenient, safe, and reliable support components for TBMs during no-load passage through stations and during reception. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a concrete guide platform support component for tunnel boring machines (TBMs) that is easy to construct, safe, reliable, highly accurate, and easy to control, and is suitable for use during tunnel boring machine (TBM) air-pushing and receiving operations.

[0004] To achieve the above objectives, the concrete guide platform component for tunnel boring machine (TBM) passage and reception includes a concrete guide platform tie beam and a concrete guide platform. Two concrete guide platform tie beams are arranged parallel to each other at a transverse interval on a concrete base slab within the tunnel. The beams contain reinforcing bars, main reinforcing bars, stirrups, and are filled with concrete. The lower part of the reinforcing bars is inserted into the concrete base slab. Adjacent reinforcing bars, main reinforcing bars, and stirrups are tied or welded together. The two concrete guide platform tie beams are arranged longitudinally on both sides of the two concrete guide platform tie beams. The side is connected to the two ends of two concrete guide beams at the front and rear ends, and is higher than the concrete guide beams. It contains concrete guide reinforcement, main reinforcement, stirrups, tie bars, and is filled with concrete. The lower part of the concrete guide reinforcement is inserted into the concrete base slab. Adjacent concrete guide reinforcement, main reinforcement, stirrups, and tie bars are tied or welded together. The part of the concrete guide beam near the inner side is an inward and downward inclined surface. Each inclined surface has a pre-embedded steel plate fixed by two anchor bars on both sides. A steel rail is installed on each pre-embedded steel plate.

[0005] The concrete guide platform reinforcement, concrete guide platform tie beam reinforcement, concrete guide platform tie beam main reinforcement and concrete guide platform main reinforcement are all made of Ф16mm steel bars; the concrete guide platform tie beam stirrups, concrete guide platform stirrups and concrete guide platform tie bars are all made of Ф8mm steel bars.

[0006] The embedded steel plate is 20mm thick, and the anchor bar is Ф16mm steel bar.

[0007] The rails used are 22# rails.

[0008] The concrete used is C35 early-strength track-specific concrete.

[0009] The concrete guide platform component provided by this utility model has the following beneficial effects: it solves the problems of low installation accuracy, insufficient safety and reliability, high cost, and long construction period associated with steel structure supports. In actual construction, the accuracy of this guide platform component can be ensured simply by controlling its top elevation. Because it is a concrete component and is anchored to the concrete base slab, it has sufficient safety and reliability. Furthermore, its construction is convenient and quick, effectively saving construction time. In addition, this guide platform component does not need to be dismantled and can be directly used for backfilling the base slab concrete. The construction method is simple and easy to understand, and it is beneficial for on-site construction. Attached Figure Description

[0010] Figure 1 This is a frontal schematic diagram of the concrete guide platform component for tunnel boring machine (TBM) to pass through and receive stations.

[0011] Figure 2 This is a side top view of the concrete guide platform component for tunnel boring machine (TBM) to pass through and receive stations, provided by this utility model.

[0012] Figure 3 This is a schematic diagram illustrating the working process of the concrete guide platform component used for tunnel boring machine (TBM) air-pushing and receiving at the station, as provided by this utility model. Detailed Implementation

[0013] The concrete guide platform component for tunnel boring machine (TBM) air-pushing and receiving stations provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Taking a tunnel boring machine (TBM) section of a city rail transit project as an example: Construction of this section begins at one station, passes through a ventilation shaft, and finally reaches another station for reception. The TBM needs to perform a no-load push through the ventilation shaft, a length of 43.6 meters, and a further 12 meters to reach the receiving station. The accuracy and reliability of the supporting components for the TBM during this no-load push and reception directly affect its success. To ensure smooth no-load push and reception, this project uses the concrete guide platform component provided by this invention for the TBM's no-load push and reception. This guide platform component is easy to manufacture, does not require dismantling, has a simple and easy-to-understand installation method, is suitable for on-site construction, is sturdy, safe, and reliable, and accuracy is controlled only by adjusting the top elevation of the guide platform.

[0015] like Figure 1 , Figure 2 As shown, the concrete guide platform component for shield tunneling machine's empty-push passage and receiving includes a concrete guide platform tie beam 10 and a concrete guide platform 11. Two concrete guide platform tie beams 10 are arranged parallel to each other at a transverse interval on the concrete floor slab inside the tunnel. The interior of each beam contains concrete guide platform tie beam reinforcement 2, main reinforcement 3, stirrups 4, and is filled with concrete. The lower part of the concrete guide platform tie beam reinforcement 2 is inserted into the concrete floor slab. Adjacent concrete guide platform tie beam reinforcement 2, main reinforcement 3, and stirrups 4 are tied or welded together. The two concrete guide platform tie beams 10 are arranged longitudinally on both sides of the two concrete guide platform tie beams 10. The rear end is connected to both ends of two concrete guide beams 10 and is higher than the concrete guide beams 10. It contains concrete guide reinforcement 1, concrete guide main reinforcement 5, concrete guide stirrups 6, concrete guide tie bars 7 and is filled with concrete. The lower part of the concrete guide reinforcement 1 is inserted into the concrete base plate. Adjacent concrete guide reinforcement 1, concrete guide main reinforcement 5, concrete guide stirrups 6 and concrete guide tie bars 7 are tied or welded together. The part of the concrete guide beam 10 near the inner side is an inclined surface that slopes inward and downward. Each inclined surface is provided with a pre-embedded steel plate 8 fixed by two anchor bars located on both sides. A steel rail 9 is installed on each pre-embedded steel plate 8.

[0016] The concrete guide beam reinforcement 1, concrete guide beam tie beam reinforcement 2, concrete guide beam tie beam main reinforcement 3, and concrete guide beam main reinforcement 5 all use Ф16mm steel bars; the concrete guide beam tie beam stirrups 4, concrete guide beam stirrups 6, and concrete guide beam tie bars 7 all use Ф8mm steel bars.

[0017] The embedded steel plate 8 is made of 20mm thick steel plate, and the anchor bar is made of Ф16mm steel bar.

[0018] The steel rail 9 is a 22# steel rail.

[0019] The concrete used is C35 early-strength track-specific concrete.

[0020] like Figure 3 As shown, when using the concrete guide platform component provided by this utility model for the empty-push and receiving of the tunnel boring machine 12, at least one month before the tunnel boring machine 12 exits the tunnel, surveyors shall first lay out the concrete guide platform 11 and the concrete guide platform tie beam 10 on the concrete base plate. Then, workers shall tie or weld the reinforcing bars and install the embedded parts. After the installation of the reinforcing bars and embedded parts is completed and accepted, the formwork shall be closed and the concrete shall be poured. During pouring, the concrete shall be poured in layers and vibrated to ensure the compactness of the concrete. After the concrete is poured, it shall be watered and cured. The formwork can be removed only when the strength reaches 75%. After curing for 28 days, test blocks cured under the same conditions shall be sent for testing. When the strength reaches 100%, the tunnel boring machine 12 can be placed on the two steel rails 9, and then the empty-push and receiving process can be carried out.

Claims

1. A concrete guide platform component for use in the empty-push and receiving of a tunnel boring machine, characterized in that: The concrete guide platform components used for shield machine air-pushing and receiving include concrete guide platform tie beams (10) and concrete guide platforms (11); two concrete guide platform tie beams (10) are set parallel to each other at a transverse interval on the concrete base plate inside the tunnel, and are provided with concrete guide platform tie beam reinforcement (2), concrete guide platform tie beam main reinforcement (3), concrete guide platform tie beam stirrups (4) and poured concrete inside, and the lower part of the concrete guide platform tie beam reinforcement (2) is inserted into the concrete base plate, and adjacent concrete guide platform tie beam reinforcement (2), concrete guide platform tie beam main reinforcement (3) and concrete guide platform tie beam stirrups (4) are tied or welded together; two concrete guide platform tie beams (10) are set longitudinally on both sides of the two concrete guide platform tie beams (10), and the front and rear ends are connected to the two concrete guide platform tie beams (11). The two ends of the guide beam (10) are connected together and the height is higher than that of the concrete guide beam (10). The interior is provided with concrete guide reinforcement (1), concrete guide main reinforcement (5), concrete guide stirrup (6), concrete guide tie reinforcement (7) and concrete is poured. The lower part of the concrete guide reinforcement (1) is inserted into the concrete base plate. Adjacent concrete guide reinforcement (1), concrete guide main reinforcement (5), concrete guide stirrup (6) and concrete guide tie reinforcement (7) are tied or welded together. The part of the concrete guide beam (10) near the inner side is an inclined surface that slopes inward and downward. Each inclined surface is provided with a pre-embedded steel plate (8) fixed by two anchor bars located on both sides. A steel rail (9) is installed on each pre-embedded steel plate (8).

2. The concrete guide platform component for tunnel boring machine (TBM) empty-push passage and receiving as described in claim 1, characterized in that: The concrete guide beam reinforcement (1), concrete guide beam tie beam reinforcement (2), concrete guide beam tie beam main reinforcement (3) and concrete guide beam main reinforcement (5) are all made of Ф16mm steel bars; the concrete guide beam tie beam stirrups (4), concrete guide beam stirrups (6) and concrete guide beam tie bars (7) are all made of Ф8mm steel bars.

3. The concrete guide platform component for tunnel boring machine (TBM) empty-push passage and receiving as described in claim 1, characterized in that: The embedded steel plate (8) is made of 20mm thick steel plate, and the anchor bar is made of Ф16mm steel bar.

4. The concrete guide platform component for tunnel boring machine (TBM) empty-push passage and receiving as described in claim 1, characterized in that: The rail (9) is a 22# rail.

5. The concrete guide platform component for shield machine air-pushing and receiving as described in claim 1, characterized in that: The concrete used is C35 early-strength track-specific concrete.

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