Rapid concrete sealing device for tunnel invert end

Abstract

This utility model discloses a rapid concrete sealing device for the end of a tunnel invert arch, including a plug web plate, which is connected to the invert arch web plate by bolts; an upper plug template and a lower plug template are installed on the inner side of the plug web plate, and the upper plug template and the lower plug template are hinged together; after the lower plug template is flipped downwards, a waterstop installation joint is formed between the upper plug template and the lower plug template for sealing with a waterstop; this utility model is simple to install, and the hinged arrangement of the upper and lower plug templates facilitates the disassembly of the lower plug template, avoiding misalignment during the installation of the waterstop. At the same time, the plug web plate is connected to the upper and lower plug templates by a pin, ensuring that the upper and lower plug templates always correspond, thereby solving quality problems such as uneven circumferential construction joint lines and grout leakage in the tunnel invert arch, honeycomb surface pitting on the concrete, and uneven, off-center, and outwardly exposed length deviations of the waterstop.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, specifically to a rapid concrete sealing device for the end of a tunnel arch. Background Technology

[0002] Currently, tunnel invert construction often uses independent invert molds, separating the invert construction from the filling process. The invert is constructed first, followed by the filling concrete. This method is inconvenient due to the difficulty in installing the invert molds and the long intervals between construction phases, resulting in a prolonged construction period. To expedite the process, some projects involve simultaneous invert and filling construction. However, before concrete filling, the invert ends need to be sealed. Currently, invert end sealing is typically achieved using wooden boards and back ribs for integral fixation. This sealing process is prone to quality problems such as uneven circumferential construction joint lines in the tunnel invert, grout leakage, honeycomb-like pitting on the concrete surface, and uneven, off-center, or excessively long waterstops. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a rapid concrete sealing device for the end of a tunnel invert arch, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0005] A rapid concrete sealing device for the tunnel invert end includes a plug web plate, which is connected to the invert web plate by bolts; an upper plug template and a lower plug template are installed on the inner side of the plug web plate, and the upper plug template and the lower plug template are hinged together; after the lower plug template is flipped downward, a waterstop installation joint is formed between the upper plug template and the lower plug template for installing a waterstop for sealing.

[0006] The aforementioned rapid concrete sealing device for the tunnel invert end has a first hinge part on both sides of the bottom of the upper plug template, and a second hinge part on the top of the lower plug template. The first hinge part and the second hinge part are connected by a hinge shaft.

[0007] The aforementioned rapid concrete sealing device for the tunnel invert end has two symmetrical first connectors on the upper and lower parts of the web of the plug, and second connectors on the middle parts of the upper and lower plug templates. The first and second connectors are respectively provided with pin holes. The upper first connector and the upper plug template are connected by a pin passing through the pin hole, and the lower first connector and the lower plug template are connected by a pin passing through the pin hole.

[0008] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0009] This utility model provides a rapid concrete sealing device for the end of a tunnel invert arch. It is simple to install, with the upper and lower end cap templates hinged together for easy disassembly of the lower end cap template. The cooperation between the upper and lower end cap templates ensures a stable installation joint for the waterstop, preventing misalignment and grout leakage during installation. Simultaneously, pins connect the end cap web to the upper and lower end cap templates, ensuring they always align. This solves quality problems such as uneven circumferential construction joint lines in the tunnel invert arch, grout leakage, honeycomb-like pitting on the concrete surface, and uneven, off-center, and outwardly exposed length deviations in the waterstop. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the specific structure of the present utility model;

[0011] Figure 2 This is an exploded view of the present invention.

[0012] Among them: 1. plug web, 2. upper plug template, 3. lower plug template, 4. waterstop installation seam, 5. first connector, 6. pin, 7. pin hole, 8. second connector, 9. first hinge, 10. second hinge, 11. hinge shaft. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Rapid concrete sealing device for tunnel invert end, such as Figures 1 to 2 As shown, it includes a plug web plate 1, which is connected to the invert arch web plate by bolts. An upper plug template 2 and a lower plug template 3 are installed on the inner side of the plug web plate 1. The upper plug template 2 and the lower plug template 3 are hinged together, and after being flipped, a waterstop installation seam 4 is formed between the upper plug template 2 and the lower plug template 3 for installing a waterstop for sealing.

[0015] The upper end cap template 2 has a first hinge part 9 on both sides of its bottom, and the lower end cap template 3 has a second hinge part 10 on its top. The first hinge part 9 and the second hinge part 10 are connected by a hinge shaft 11.

[0016] The upper end plate 2 and the lower end plate 3 are hinged together, allowing the lower end plate 3 to be rotated at a certain angle, which facilitates demolding.

[0017] The upper and lower parts of the plug web plate 1 are respectively provided with two symmetrical first connecting parts 5, and the middle parts of the upper plug template 2 and the lower plug template 3 are respectively provided with second connecting parts 8. The first connecting parts 5 and the second connecting parts 8 are respectively provided with pin holes 7. The upper first connecting part 5 and the upper plug template 2 are connected by a pin 6 passing through the pin hole 7, and the lower first connecting part 5 and the lower plug template 3 are connected by a pin 6 passing through the pin hole 7.

[0018] In use, first install the plug web plate on the invert arch web plate with bolts, then connect the upper plug template 2 to the plug web plate with pins, and then rotate the lower plug template 3 downward so that the top surface of the lower plug template 3 corresponds to the bottom surface of the upper plug template 2. At the same time, there is a certain gap between the upper plug template 2 and the lower plug template 3 after being flipped, which is used to install the waterstop.

[0019] Next, the lower plug template 3 is connected to the plug web plate via the pin 6 to limit the lower plug template and prevent it from shifting and affecting the installation of the waterstop.

[0020] After fixing the lower end cap template, install the waterstop inside the waterstop installation joint 4, and then start pouring concrete.

[0021] After the concrete has solidified, first remove the web plate of the end cap, then flip the lower end cap template outward to separate the lower end cap web plate from the concrete angle surface, and then remove the upper end cap template.

[0022] This utility model provides a rapid concrete sealing device for the end of a tunnel invert arch. It is simple to install, with the upper and lower end cap templates hinged together for easy disassembly of the lower end cap template. The cooperation between the upper and lower end cap templates ensures a stable installation joint for the waterstop, preventing misalignment and grout leakage during installation. Simultaneously, pins connect the end cap web to the upper and lower end cap templates, ensuring they always align. This solves quality problems such as uneven circumferential construction joint lines in the tunnel invert arch, grout leakage, honeycomb-like pitting on the concrete surface, and uneven, off-center, and outwardly exposed length deviations in the waterstop.

Claims

1. A device for rapid sealing of concrete at the end of a tunnel invert, characterized in that: It includes a plug web plate (1), which is connected to the invert arch web plate by bolts; an upper plug template (2) and a lower plug template (3) are installed on the inner side of the plug web plate (1), and the upper plug template (2) and the lower plug template (3) are hinged together; after the lower plug template (3) is flipped down, a waterstop installation seam (4) is formed between the upper plug template (2) and the lower plug template (3) for installing a waterstop for sealing.

2. The rapid concrete sealing device for the tunnel invert end as described in claim 1, characterized in that: The upper plug template (2) has a first hinge part (9) on both sides of its bottom, and the lower plug template (3) has a second hinge part (10) on its top. The first hinge part (9) and the second hinge part (10) are connected by a hinge shaft (11).

3. The device for rapid sealing of the tunnel invert end head concrete according to claim 1, characterized in that: The upper and lower parts of the plug web (1) are respectively provided with two symmetrical first connectors (5), and the middle parts of the upper plug template (2) and the lower plug template (3) are respectively provided with second connectors (8). The first connectors (5) and the second connectors (8) are respectively provided with pin holes (7). The upper first connector (5) and the upper plug template (2) are connected by a pin (6) passing through the pin hole (7), and the lower first connector (5) and the lower plug template (3) are connected by a pin (6) passing through the pin hole (7).

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