Anchor sealing head and bridge prestress tensioning tooth block plugging structure

Abstract

The utility model belongs to the field of building facilities, and particularly relates to an anchor sealing head and a bridge prestress tensioning tooth block plugging structure. The anchor sealing head comprises an anchor sealing head body, a prefabricated anchor sealing head built-in steel bar and a grouting sleeve, wherein the prefabricated anchor sealing head built-in steel bar and the grouting sleeve are arranged in the anchor sealing head body. One end of the grouting sleeve is connected with the prefabricated anchor sealing head built-in steel bar, and the other end of the grouting sleeve is provided with a reserved channel; the built-in grouting sleeve is provided with a grouting opening and a grout outlet. The utility model innovatively prepares the prefabricated anchor sealing head for assembling the bridge prestress tensioning tooth block. After the prestress tension anchor sealing is completed, the anchor sealing head is directly installed, and then follow-up operation is completed; the procedures of formwork erecting, concrete pouring and the like do not need to be carried out, and the end head anchor sealing procedure can be expected to be completed within 3h. And the process time is greatly shortened.

Description

Technical Field

[0001] This utility model belongs to the field of building facilities, specifically relating to a sealing anchor head and a sealing structure for bridge prestressed tensioning tooth blocks. Background Technology

[0002] With the widespread renovation of old urban roads, the upgrading of urban road systems and the construction of elevated expressways are accelerating. Among these advancements, prestressed construction technology is widely used in road and bridge construction, occupying a core position and driving the development of road and bridge engineering.

[0003] In the construction of prestressed bridge engineering, the prestressing tensioning blocks for the top and bottom slabs and webs of the box girder are often located inside the box girder chamber. After the prestressing tensioning is completed and the ends are sealed, secondary reinforcement binding, formwork erection, and concrete pouring are required. Under normal circumstances, the anchor sealing process takes at least 7 days to complete. Moreover, the box girder chamber is a confined space, and prolonged construction inside the box girder chamber undoubtedly increases the construction difficulty and safety risks. The process is prone to confined space work safety accidents and delays in bridge deck paving work, among other issues. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects in the prior art and provide a sealing structure for anchor heads and bridge prestressed tensioning tooth blocks.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] An anchor head includes an anchor head body, a precast anchor head internal steel bar and a grouting sleeve disposed within the anchor head body; one end of the grouting sleeve is connected to the precast anchor head internal steel bar, and the other end is provided with a reserved channel; the internal grouting sleeve is provided with a grouting port and a grout outlet.

[0007] The openings of the grouting port and the grout outlet are located on the outside of the anchor head body; or the anchor head body is connected to the outside of the anchor head body through a reserved through hole.

[0008] The top of the anchor body is equipped with a hook.

[0009] This utility model also includes a bridge prestressed tensioning tooth block sealing structure, comprising a box girder, tooth blocks disposed within the box girder, tooth block pre-reserved steel bars disposed within the tooth blocks, and the sealing anchor head.

[0010] The pre-reserved reinforcing bars of the toothed block pass through the pre-reserved channel and are connected to the grouting sleeve.

[0011] The toothed block contains steel strands.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention innovatively prepares a prefabricated anchor head for assembling prestressed tensioning blocks in bridges. After prestressing and anchor sealing are completed, the anchor head can be directly installed, and subsequent operations can be completed without the need for formwork erection and concrete pouring. The end-sealing process is expected to be completed within 3 hours, significantly shortening the process time. This invention adopts standardized design principles, enabling rapid implementation and significantly improving construction efficiency; furthermore, the centralized supply method reduces energy consumption to some extent. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the sealing anchor head of this utility model;

[0015] Figure 2 This is a schematic diagram of the grouting sleeve of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the box girder of this utility model;

[0017] Figure 4 This is a schematic diagram of the result of the bridge prestressed tensioning tooth block sealing structure of this utility model;

[0018] Figure 5 -6 shows the top view and cross-sectional view after the anchor head is installed. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0020] Figure 1 Figure 6 shows a sealing anchor head, including a sealing anchor head body 1 and a grouting structure 3 disposed within the sealing anchor head body 1; the grouting structure 3 includes a precast sealing anchor head built-in steel bar 3-2 and a grouting sleeve 3-5; one end of the grouting sleeve is connected to the precast sealing anchor head built-in steel bar 3-2, and the other end is provided with a reserved channel 11 for connecting to the tooth block reserved steel bar 3-1 in the tooth block 4; the built-in grouting sleeve is provided with a grouting port 3-3 and a grout outlet 3-4.

[0021] The openings of the grouting port 3-3 and the grout outlet 3-3 are located on the outside of the sealing anchor head body, or the sealing anchor head body is connected to the outside of the sealing anchor head body through a reserved through hole, so as to facilitate grouting of the grouting sleeve and connect the precast sealing anchor head built-in steel bar 3-2 and the tooth block reserved steel bar 3-1 in the tooth block 4.

[0022] The top of the anchor body is equipped with a hook 2 for on-site hoisting of the component.

[0023] This utility model also includes a bridge prestressed tensioning tooth block sealing structure, including a box girder 6, a tooth block 4 disposed in the box girder, a tooth block reserved steel bar 3-1 disposed in the tooth block, and the sealing anchor head.

[0024] The toothed block has a pre-reserved reinforcing bar 3-1 that passes through the pre-reserved channel 11 and connects to the grouting sleeve 3-5. A steel strand 5 is installed inside the toothed block 4.

[0025] The anchor body 1 is provided with protrusions that match the deep-buried anchor sealing end concrete 7 of the deep-buried anchor structure 8.

[0026] The implementation principle of this utility model is as follows: Before the prestressing tensioning of the box girder begins, the detailed work on the prefabricated tensioning teeth can begin; this is done in advance. The prefabricated anchor heads of this utility model are fabricated in the prefabrication plant according to the detailed drawings, and components such as grouting sleeves and hooks are fabricated according to the drawings. After the prestressing tensioning and sealing are completed on site, the anchor heads are hoisted to the designated working surface and installed with the pre-reserved reinforcing bars 3-1 on the teeth. The pre-reserved grouting sleeves are then grouted and compacted, and the prefabricated anchor heads and teeth are effectively combined into a whole using high-strength grout. The hooks are removed as needed on site, the manholes are sealed, and the box girder bridge deck work is carried out.

[0027] In summary, this invention innovatively prepares a prefabricated anchor head for assembling prestressed tensioning blocks in bridges. After prestressing and anchor sealing are completed, the anchor head can be directly installed to complete subsequent operations; no further formwork erection or concrete pouring is required, and the end-sealing process is expected to be completed within 3 hours. This significantly shortens the process time. This invention adopts standardized design principles, enabling rapid implementation and significantly improving construction efficiency; furthermore, the centralized supply method reduces energy consumption to some extent.

[0028] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A seal for an anchor head, characterized in that, The utility model provides a sealing anchor head body and the prefabricated sealing anchor head built-in steel bar and grouting sleeve set in the sealing anchor head body, one end of the grouting sleeve is connected with the prefabricated sealing anchor head built-in steel bar, and the other end is provided with a reserved channel, a grouting port and a slurry outlet are arranged on the grouting sleeve.

2. The anchoring head according to claim 1, characterized in that, The opening of the grouting port and the slurry outlet is arranged on the outside of the sealing anchor head body, or the sealing anchor head body is communicated with the outside of the sealing anchor head body through a reserved through hole.

3. The anchor head of claim 1, wherein, A lifting hook is arranged on the top of the sealing anchor head body.

4. A bridge prestress tensioning tooth block plugging structure, characterized in that, The utility model provides a sealing anchor head body and the prefabricated sealing anchor head built-in steel bar and grouting sleeve set in the sealing anchor head body, one end of the grouting sleeve is connected with the prefabricated sealing anchor head built-in steel bar, and the other end is provided with a reserved channel, a grouting port and a slurry outlet are arranged on the grouting sleeve.

5. The bridge prestress tensioning tooth block plugging structure according to claim 4, characterized in that, The opening of the grouting port and the slurry outlet is arranged on the outside of the sealing anchor head body, or the sealing anchor head body is communicated with the outside of the sealing anchor head body through a reserved through hole.

6. The bridge prestress tensioning tooth block plugging structure according to claim 4, characterized in that, A lifting hook is arranged on the top of the sealing anchor head body. The utility model provides a sealing anchor head body and the prefabricated sealing anchor head built-in steel bar and grouting sleeve set in the sealing anchor head body, one end of the grouting sleeve is connected with the prefabricated sealing anchor head built-in steel bar, and the other end is provided with a reserved channel, a grouting port and a slurry outlet are arranged on the grouting sleeve. The opening of the grouting port and the slurry outlet is arranged on the outside of the sealing anchor head body, or the sealing anchor head body is communicated with the outside of the sealing anchor head body through a reserved through hole. A lifting hook is arranged on the top of the sealing anchor head body. The utility model provides a sealing anchor head body and the prefabricated sealing anchor head built-in steel bar and grouting sleeve set in the sealing anchor head body, one end of the grouting sleeve is connected with the prefabricated sealing anchor head built-in steel bar, and the other end is provided with a reserved channel, a grouting port and a slurry outlet are arranged on the grouting sleeve. The opening of the grouting port and the slurry outlet is arranged on the outside of the sealing anchor head body,

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