Grouting bag for immersed tube tunnel

Abstract

The utility model relates to the technical field of grouting bags, and discloses a grouting bag for an immersed tube tunnel, which comprises two groups of grouting bag main bodies made of rubber, and a plurality of groups of positioning strips are fixedly connected to the inner walls of the grouting bag main bodies. The grouting bag main body made of rubber can play a role in stretching and extending after grouting, the grouting bag main body can be conveniently attached to the gap of the immersed tunnel, so that the space around the position where the grouting bag main body is located is fully filled, and when the grouting bag main body goes deep into the gap, a plurality of sets of positioning strips made of spandex are arranged in the grouting bag main body, so that the grouting bag main body is more stable in grouting. The positioning strip made of the spandex has a shaping function, the grouting bag body can penetrate into a gap conveniently, the spandex can provide certain stretchability during grouting, then the grouting bag body can be better attached to the gap of the immersed tunnel under the cooperation of the positioning strip made of the spandex, the positioning strip made of the spandex has a certain shaping function after grouting, and the grouting bag body can be better attached to the gap of the immersed tunnel. And the practicability of the grouting bag main body is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting bags, in particular to a grouting bag used for an immersed tube tunnel. Background Art

[0002] In recent years, with the continuous increase of cross-sea tunnel projects, the immersed tube method has been increasingly used to build submarine tunnels. Generally, several factory-prefabricated pipe segments are floated to the sea surface, and the pipe segments are docked on the seabed and sunk in the dredged foundation trench. The adjacent pipe segment joints are sealed with GINA waterstops and OMEGA waterstops. The flexible joints can effectively adapt to the errors caused by the installation of the pipe segments and the uneven settlement after they are sunk in place, ensuring the safety factor and watertightness of the immersed tube tunnel. As the key to the stress of the underwater immersed tube tunnel structure, shear resistance The form of the structure has a huge impact on the entire project. The shear-resistant structure of the pipe joint of the immersed tube tunnel is a steel shear key, which is installed on the inside of the tunnel after the pipe joint is sunk. Since the installation position of the steel shear key is located in the longitudinal section direction of the concrete in the joint cavity of the side wall of the pipe joint, the horizontal distance along the pipe direction is only slightly larger than the steel shear key component itself. The construction space is very narrow, and the steel shear key is close to the OMEGA waterstop on the side wall. In order to protect the waterstop, it is strictly forbidden to use welding or other methods that require fire operations for installation. Therefore, the steel shear key is connected to the embedded parts at the end of the pipe joint by bolts.

[0003] In the authorized patent document with the publication number CN107524166A, a grouting bag and a method of use are disclosed, wherein the grouting bag includes an integrally sealed bag body, the bag body is provided with at least one grouting port, the bag body is made of elastic material, and when a curable slurry is injected into the bag body, the bag body can automatically expand with the entry of the slurry. After grouting, the grouting bag can fully fill the space around its position, and through its own deformation, it can be tightly attached between two steel shear keys. After the slurry solidifies, a shear-resistant structure that relies on the cushion layer to achieve shear force transmission is formed between the two steel shear keys. The grouting bag has good adaptability and strong practicality in the irregular shear support system of the immersed tube tunnel, and can effectively avoid the problem of local stress concentration caused by other connection methods. At the same time, the grouting bag can be used in places with narrow working space, and its convenient construction performance can effectively reduce construction costs.

[0004] The above devices and traditional grouting bags need to be placed in the gap of the immersed tube tunnel when in use. The grouting bag is made of a retractable soft material, so it is more troublesome to place the grouting bag in the gap of the immersed tube tunnel, and the grouting bag needs a certain amount of time to set and dry after grouting. Therefore, a grouting bag that is easy to insert into the gap and has a certain shaping ability is provided. Utility Model Content

[0005] The purpose of the utility model is to provide a grouting bag for an immersed tube tunnel, which solves the problem that the above devices and traditional grouting bags need to be placed in the gap of the immersed tube tunnel when in use, and the grouting bag is made of a retractable soft material, so it is rather troublesome to place the grouting bag in the gap of the immersed tube tunnel, and the grouting bag needs a certain amount of time to be shaped and dried after grouting, thereby providing a grouting bag that is easy to insert into the gap and has a certain shaping ability.

[0006] An embodiment of the present application provides a grouting bag for an immersed tube tunnel, comprising two groups of grouting bag main bodies, the two groups of grouting bag main bodies are made of rubber material, the inner walls of the grouting bag main bodies are fixedly connected with multiple groups of positioning strips, the multiple groups of positioning strips are evenly arranged in a rectangular array, and the material of the positioning strips is spandex material.

[0007] By adopting the above technical scheme, the grouting bag body made of rubber material can play a role of expansion and contraction after grouting, which makes it convenient for the grouting bag body to fit into the gap of the immersed tube tunnel, thereby fully filling the space around its position. When the grouting bag body goes deep into the gap, a plurality of groups of spandex positioning strips are arranged inside the grouting bag body. The spandex positioning strips have a shaping effect, which makes it convenient for the grouting bag body to go deep into the gap, and spandex can provide a certain stretchability during grouting. Then, with the cooperation of the spandex positioning strips, the grouting bag body can better fit the gap of the immersed tube tunnel, and it has a certain shaping effect after grouting, thereby enhancing the practicality of the grouting bag body.

[0008] Optionally, one side of the two grouting bag bodies that are arranged opposite to each other is respectively abutted against a steel pad.

[0009] By adopting the above technical solution, the steel pad can act as a spacer for the grouting bag body.

[0010] Optionally, a first steel shear key is installed on one side of the two steel pads away from the grouting bag body.

[0011] By adopting the above technical solution, shear force and torque can be transmitted through the first steel shear key. This connection method ensures that the connection between the immersed tubes is tight and reliable, thereby enhancing the overall stiffness and stability of the tunnel structure.

[0012] Optionally, one side of the two grouting bag bodies away from the steel backing plate is respectively abutted against a second steel shear key.

[0013] By adopting the above technical solution, shear force and torque can be further transmitted through the second steel shear key. This connection method ensures that the connection between the immersed tubes is tight and reliable, thereby enhancing the overall stiffness and stability of the tunnel structure.

[0014] Optionally, two ends of the immersed tube are installed on one side of the first steel shear key.

[0015] By adopting the above technical solution, the first steel shear key can be installed through the two ends of the immersed tube.

[0016] Optionally, one end of the same immersed tube is installed on the side of the two second steel shear keys away from the first steel shear keys.

[0017] By adopting the above technical solution, the second steel shear key can be installed through one end of the immersed tube.

[0018] Optionally, an injection pipe is respectively installed on one side of the two grouting bag bodies.

[0019] By adopting the above technical solution, the inside of the grouting bag body can be grouted through the injection pipe.

[0020] Optionally, valve cores are rotatably mounted on the inner walls of the two injection pipes respectively, and a handle is fixedly connected to the rotating shaft of the valve core.

[0021] By adopting the above technical solution, the injection pipe can be closed and opened by rotating the valve core by the handle.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The technical solution of the present application can play the role of expansion and contraction after grouting through the rubber material of the grouting bag main body, so that the grouting bag main body can fit into the gap of the immersed tube tunnel conveniently, thereby fully filling the space around its position. When the grouting bag main body goes deep into the gap, a plurality of groups of spandex positioning strips are arranged inside the grouting bag main body. The spandex positioning strips have a shaping effect, which makes it convenient for the grouting bag main body to go deep into the gap. During grouting, spandex can provide a certain stretchability. Then, with the cooperation of the spandex positioning strips, the grouting bag main body can better fit the gap of the immersed tube tunnel. After grouting, it has a certain shaping effect, thereby enhancing the practicality of the grouting bag main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 It is a front view schematic diagram of a grouting bag for an immersed tube tunnel according to the utility model;

[0026] Figure 2 The utility model is a grouting bag for immersed tube tunnel Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 It is a schematic diagram of a rear view of a grouting bag for an immersed tube tunnel according to the utility model;

[0028] Figure 4 The utility model is a grouting bag for immersed tube tunnel Figure 3 Enlarged view of point B in the middle.

[0029] In the figure: 1. grouting bag body; 2. positioning strip; 3. injection pipe; 4. valve core; 5. handle; 6. steel pad; 7. first steel shear key; 8. second steel shear key; 9. one end of immersed tube; 10. second end of immersed tube. DETAILED DESCRIPTION

[0030] See also Figure 1-4 The utility model provides a technical solution: a grouting bag for an immersed tube tunnel, comprising two groups of grouting bag main bodies 1, the two groups of grouting bag main bodies 1 are made of rubber, the inner walls of the grouting bag main bodies 1 are fixedly connected with multiple groups of positioning strips 2, the multiple groups of positioning strips 2 are evenly arranged in a rectangular array, the positioning strips 2 are made of spandex, one side of the two grouting bag main bodies 1 is respectively installed with an injection pipe 3, the inner walls of the two injection pipes 3 are respectively rotatably installed with a valve core 4, and the rotating shaft of the valve core 4 is fixedly connected with a handle 5.

[0031] In the technical solution of the utility model, the grouting bag main body 1 made of rubber material can play a role of expansion and contraction after grouting, which makes it convenient for the grouting bag main body 1 to fit into the gap of the immersed tube tunnel, thereby fully filling the space around its position. When the grouting bag main body 1 goes deep into the gap, a plurality of groups of positioning strips 2 made of spandex material are arranged inside the grouting bag main body 1. The positioning strips 2 made of spandex material have a shaping effect, which makes it convenient for the grouting bag main body 1 to go deep into the gap, and spandex can provide a certain stretchability during grouting. Then, with the cooperation of the positioning strips 2 made of spandex material, the grouting bag main body 1 can better fit the gap of the immersed tube tunnel, and has a certain shaping effect after grouting, thereby enhancing the practicality of the grouting bag main body 1.

[0032] In addition, the injection tube 3 can be used to inject grout into the grouting bag body 1 , and the injection tube 3 can be closed and opened by rotating the valve core 4 through the handle 5 .

[0033] In the technical solution of the utility model, if Figure 1 and Figure 3As shown, one side of the two grouting bag bodies 1 that are arranged opposite to each other is respectively abutted with a steel pad 6, through which the steel pad 6 can act as a spacer for the grouting bag body 1, and a first steel shear key 7 is installed on the side of the two steel pads 6 away from the grouting bag body 1, through which shear force and torque can be transmitted, this connection method ensures that the connection between the immersed tubes is tight and reliable, thereby enhancing the overall rigidity and stability of the tunnel structure, and one side of the two grouting bag bodies 1 that is away from the steel pad 6 is respectively abutted with a second steel shear key 8, through which shear force and torque can be further transmitted, this connection method ensures that the connection between the immersed tubes is tight and reliable, thereby enhancing the overall rigidity and stability of the tunnel structure;

[0034] One side of the first steel shear key 7 is installed with two ends 10 of the immersed tube, and the first steel shear key 7 can be installed through the two ends 10 of the immersed tube. The two second steel shear keys 8 are installed with the same end 9 of the immersed tube on the side away from the first steel shear key 7, and the second steel shear keys 8 can be installed through the end 9 of the immersed tube.

[0035] When in use, firstly, the first end 9 of the immersed tube and the second end 10 of the immersed tube can be used to install the first steel shear key 7 and the second steel shear key 8, and the steel pad 6 can act as a spacer for the grouting bag body 1 and the first steel shear key 7, and then the grouting bag body 1 made of rubber material can play a role of expansion and contraction after grouting, so that the grouting bag body 1 can fit the gap of the immersed tube tunnel conveniently, so as to fully fill the space around its position, and when the grouting bag body 1 goes deep into the gap, a plurality of groups of positioning strips 2 made of spandex material are arranged inside the grouting bag body 1, and the positioning strips 2 made of spandex material have a shaping effect, so that the grouting bag body 1 can be conveniently inserted into the gap, so that the grouting bag body 1 can be grouted with the cooperation of the injection pipe 3, and the spandex can provide a certain stretchability during grouting, and then the grouting bag body 1 can be better fitted with the gap of the immersed tube tunnel with the cooperation of the positioning strips 2 made of spandex material, and has a certain shaping effect after grouting, thereby enhancing the practicality of the grouting bag body 1.

Claims

1. A grouting bag for an immersed tunnel, characterized in that: The invention comprises two groups of grouting bag main bodies (1), the two groups of grouting bag main bodies (1) are made of rubber material, the inner walls of the grouting bag main bodies (1) are fixedly connected with a plurality of groups of positioning strips (2), the plurality of groups of positioning strips (2) are evenly arranged in a rectangular array, and the material of the positioning strips (2) is spandex material.

2. A grouting bag for an immersed tube tunnel according to claim 1, characterized in that: One side of the two grouting bag bodies (1) arranged opposite to each other is respectively abutted against a steel pad (6).

3. A grouting bag for an immersed tube tunnel according to claim 2, characterized in that: A first steel shear key (7) is installed on one side of the two steel pads (6) away from the grouting bag body (1).

4. A grouting bag for an immersed tube tunnel according to claim 3, characterized in that: The two sides of the grouting bag bodies (1) away from the steel backing plate (6) are respectively abutted against a second steel shear key (8).

5. The grouting bag for immersed tunnel according to claim 3, characterized in that: Two ends (10) of the immersed tube are installed on one side of the first steel shear key (7).

6. A grouting bag for an immersed tube tunnel according to claim 4, characterized in that: The same immersed tube end head (9) is installed on the side of the two second steel shear keys (8) away from the first steel shear key (7).

7. The grouting bag for immersed tunnel according to claim 1, characterized in that: An injection pipe (3) is respectively installed on one side of the two grouting bag bodies (1).

8. A grouting bag for an immersed tube tunnel according to claim 7, characterized in that: The inner walls of the two injection pipes (3) are respectively rotatably mounted with valve cores (4), and the rotating shafts of the valve cores (4) are fixedly connected with handles (5).

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