Quick end sealing structure for segmental assembled box girder

Abstract

The utility model discloses a quick end sealing structure for a segmental assembled box girder. The quick end sealing structure comprises a plurality of reinforcing meshes, a plurality of templates and template shores, a plurality of anchorage device mounting cavities are formed in the end of the segmental assembled box girder, the reinforcing meshes are vertically mounted in the anchorage device mounting cavities respectively, and pouring holes are formed in the upper ends of the anchorage device mounting cavities; the multiple formworks are attached to the outer sides of the multiple anchorage device installation cavities respectively, the anchorage device installation cavities are closed from the side faces, the two segmental assembly box girders are placed on the same pier column, and the outer walls of the two formworks, corresponding to the height positions, on the two segmental assembly box girders are supported through the formwork back shore. According to the construction method, beam falling operation can be carried out in a matched mode, then pouring of the end sealing concrete is carried out, the construction time is remarkably shortened through the improvement, the construction efficiency is improved, and the overall construction cost is reduced. Meanwhile, due to the fact that the construction process is optimized, the construction quality can be better guaranteed through the method, and the safety and reliability of engineering are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of segment assembled box girders, in particular to a quick end-sealing structure for segment assembled box girders. Background Art

[0002] The traditional method of capping the ends of segmental box girders involves capping the ends first and then dropping the beams. This approach has significant drawbacks. It requires waiting for the concrete to fully set and reach the design strength before the beams can be dropped. This not only prolongs the construction period but also increases safety risks and construction costs. More importantly, this method makes it difficult to ensure the stability and reliability of construction quality.

[0003] Therefore, it is necessary to develop a segmental assembled box girder rapid end sealing structure to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to design a segment assembled box girder rapid end sealing structure in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A segmental assembled box girder rapid end-sealing structure comprising:

[0007] Multiple steel meshes; multiple anchor installation cavities are provided at the ends of the segmental assembled box beam, multiple steel meshes are vertically installed in the multiple anchor installation cavities, and pouring holes are opened at the upper ends of the anchor installation cavities, and concrete is poured into the anchor installation cavities from the pouring holes;

[0008] Multiple templates; multiple templates are respectively attached to the outside of multiple anchor installation cavities, and the anchor installation cavities are closed from the sides,

[0009] Formwork top support: two segmental assembled box girders are placed on the same pier, and the two outer walls of the formwork at corresponding height positions on the two segmental assembled box girders are supported by formwork top support.

[0010] The beneficial effects of the present invention are:

[0011] The present invention allows for the beam drop operation to be performed first, followed by the pouring of the end-capping concrete. This improvement not only significantly shortens construction time and improves construction efficiency, but also reduces overall construction costs. Furthermore, by optimizing the construction process, this method can better ensure construction quality and enhance the safety and reliability of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the end structure of the box girder in the utility model;

[0013] Figure 2 It is a structural diagram of the utility model;

[0014] Figure 3 yes Figure 2 The middle part is an enlarged structural diagram.

[0015] In the figure, 1-anchor installation cavity, 2-anchor, 3-steel mesh, 4-formwork, 5-formwork top support, 6-pier column, 7-hopper. DETAILED DESCRIPTION

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0018] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0019] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0020] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0021] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0022] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-3 As shown, a segmental assembled box girder rapid end-sealing structure comprises:

[0024] A plurality of steel meshes 3; a plurality of anchor installation cavities 1 are provided at the ends of the segmental assembled box beam, a plurality of steel meshes 3 are vertically installed in the plurality of anchor installation cavities 1, and a pouring hole is opened at the upper end of the anchor installation cavity 1, and concrete is poured from the pouring hole into the anchor installation cavity 1;

[0025] Multiple templates 4; multiple templates 4 are respectively attached to the outside of the multiple anchor installation cavities 1, and the anchor installation cavity 1 is closed from the side,

[0026] Formwork top support 5; two segmental assembled box beams are placed on the same pier 6, and the two segmental assembled box beams are supported between the outer walls of the two formworks 4 at corresponding height positions by the formwork top support 5.

[0027] In some embodiments, at least one side of the steel mesh 3 is anchored to the side wall of the anchor installation cavity 1 .

[0028] In some embodiments, the segment assembled box girder rapid end sealing structure also includes multiple connecting bars, the first ends of the multiple connecting bars are anchored to a side wall of the anchor installation cavity 1 where the anchor 2 is installed, and the second ends of the multiple connecting bars are welded to the steel mesh 3.

[0029] In some embodiments, the segmental box girder rapid end-capping structure further includes a hopper 7, the bottom of which is connected to a pouring hole on the anchor installation cavity 1 above the segmental box girder. During pouring, concrete flows directly into the anchor installation cavity 1 above the segmental box girder through the hopper 7 and the pouring hole.

[0030] In some embodiments, the segmental box girder rapid end-capping structure further includes a connecting pipe, through which the bottom of the hopper 7 is connected to a pouring hole in the anchor installation cavity 1 below the segmental box girder. During pouring, concrete flows directly into the anchor installation cavity 1 below the segmental box girder through the hopper 7, the connecting pipe, and the pouring hole.

[0031] After the segmented box girder is tensioned and the duct grouting is completed (the segmented box girder is constructed using the short-line method, with assembly, tensioning, and grouting on the bridge deck), the end-capping steel mesh 3 should be installed before the beam is lowered. The steel mesh 3 uses φ10 steel bars with dimensions of 150mm*150mm. The beam can only be lowered after the steel bars are installed. Once the beam is smoothly placed on the pier supports, the formwork 4 is installed. Workers install and reinforce the box. The end-capping formwork 4 of the front and rear spans is tightened against each other using formwork supports 5 to ensure the stability of the structure. After reinforcement is completed, concrete is poured from the top using a hopper 7. After the concrete reaches the design demolding strength, the end-capping formwork 4 is removed, and finally, a polyurethane waterproof coating is applied to enhance the waterproof performance.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A segmental assembled box girder rapid end-sealing structure, characterized in that: include: Multiple steel meshes; The ends of the segmental assembled box beam are provided with a plurality of anchor installation cavities, and a plurality of steel meshes are vertically installed in the plurality of anchor installation cavities. A pouring hole is opened at the upper end of the anchor installation cavity, and concrete is poured into the anchor installation cavity from the pouring hole. Multiple templates; multiple templates are respectively attached to the outside of multiple anchor installation cavities, and the anchor installation cavities are closed from the sides, Formwork top support: two segmental assembled box girders are placed on the same pier, and the two outer walls of the formwork at corresponding height positions on the two segmental assembled box girders are supported by formwork top support.

2. The rapid end-sealing structure for segmental assembled box beams according to claim 1, characterized in that: At least one side of the steel mesh is anchored to the side wall of the anchor installation cavity.

3. The rapid end-sealing structure for segmented box beams according to claim 2, characterized in that: The segment assembled box girder quick end sealing structure also includes a plurality of connecting bars, the first ends of the plurality of connecting bars are anchored to a side wall of the anchor installation cavity, and the second ends of the plurality of connecting bars are welded to the steel mesh.

4. The rapid end-sealing structure for segmental assembled box beams according to claim 1, characterized in that: The segmental assembled box girder rapid end sealing structure also includes a hopper, the bottom of which is connected to a casting hole on the anchor installation cavity located above the segmental assembled box girder.

5. The rapid end-sealing structure for segmental assembled box beams according to claim 4, characterized in that: The segmental assembled box girder quick end sealing structure also includes a connecting pipe, through which the bottom of the hopper is connected to a casting hole on the anchor installation cavity located below the segmental assembled box girder.

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