Steel pipe piece waterproof structure

Abstract

The utility model discloses a steel pipe piece waterproof structure, which relates to the technical field of shield segments, and comprises a steel pipe piece main body and two end plates, the upper part of one side of each end plate is connected with a third sealing strip, and one side of each end plate is respectively connected with a first sealing strip and a second sealing strip. Through the arrangement of the first sealing strip, the second sealing strip and the third sealing strip, after the steel pipe piece body is spliced, the first sealing strip and the second sealing strip are meshed to form sealing, a joint between the first sealing strip and the second sealing strip is in a labyrinth shape, and early-stage water seepage is effectively avoided; the first sealing strip and the second sealing strip are sealed through the third sealing strip in the later period, so that the phenomenon of water seepage after the first sealing strip and the second sealing strip are aged and damaged is avoided; and the three sealing rings are alternately used in front and later periods to effectively seal and prevent water seepage.

Description

Technical Field

[0001] The utility model relates to the technical field of shield pipe segments, in particular to a steel pipe segment waterproof structure. Background Art

[0002] Shield segments are the main assembly components of shield construction and the innermost barrier of the tunnel. They are responsible for resisting soil pressure, groundwater pressure and some special loads. Shield segments are the permanent lining structure of shield tunnels. The quality of shield segments is directly related to the overall quality and safety of the tunnel, and affects the waterproof performance and durability of the tunnel. They are mainly made of steel, concrete and other materials. Waterstop strips need to be set during the splicing process of steel segments to prevent water seepage.

[0003] Existing steel pipe segments are usually provided with a groove and glued with a water stop strip, which is used for sealing. The water stop strip can absorb water and expand to increase the sealing performance and service life. However, it takes a certain amount of time for the water stop strip to absorb water and expand, usually two to seven days. As a result, in the early stage of the pipe segment, that is, during the period when the water stop strip has not expanded, the sealing effect is relatively poor after expansion, and there is a possibility of water seepage. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a steel pipe sheet waterproof structure to solve the technical problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a steel pipe segment waterproof structure, comprising a steel pipe segment main body and an end plate, wherein two end plates are provided, a third sealing strip is connected to the upper side of each of the two end plates, and a first sealing strip and a second sealing strip are respectively connected to one side of the two end plates.

[0006] By adopting the above technical solution, after the steel pipe segment body is spliced, the first sealing strip and the second sealing strip bite into each other to form a seal, and the joint between the two forms a maze shape, which effectively avoids water seepage in the early stage. The third sealing strip is located on the outside of the steel pipe segment body, so it will begin to absorb water and expand when it comes into contact with water in the early stage, and its service life is longer. In the later stage, it is sealed by the third sealing strip to avoid water seepage after aging and damage of the first sealing strip and the second sealing strip.

[0007] Furthermore, the first sealing strip is in a concave shape, and the second sealing strip is in a convex shape.

[0008] By adopting the above technical solution, after the steel pipe body is spliced, the first sealing strip and the second sealing strip bite into each other to form a seal, and the joint between the two forms a maze shape, which effectively avoids early water seepage.

[0009] Furthermore, the first sealing strip abuts against the second sealing strip, and both the first sealing strip and the second sealing strip are made of nitrile rubber.

[0010] By adopting the above technical solution, the first sealing strip and the second sealing strip are abutted against each other to form a seal, thereby avoiding early water seepage. The first sealing strip and the second sealing strip are made of nitrile rubber, which has excellent heat resistance, aging resistance, physical and mechanical properties and chemical stability.

[0011] Furthermore, the third sealing strip is a rubber expansion waterstop strip.

[0012] By adopting the above technical solution, the third sealing strip begins to absorb water and swell when in contact with water in the early stage, and its service life is extended. In the later stage, the third sealing strip is used for sealing to avoid water seepage after aging and damage of the first and second sealing strips.

[0013] Furthermore, the two end plates are respectively fixed on both sides of the steel pipe segment body, and a mounting hole is opened on the other side of the end plate, and a rib plate is fixed inside the steel pipe segment body.

[0014] By adopting the above technical solution, multiple steel pipe segment bodies are placed in place during splicing, and then the fastening structure is passed through the installation hole to limit the multiple steel pipe segment bodies, while the structural strength is increased by cooperating with the ribs and end plates.

[0015] Furthermore, a plurality of ribs are provided, and the plurality of ribs are distributed in a fan-shaped array.

[0016] By adopting the above technical solution, the number of ribs is increased to increase the support points of the steel pipe segment body, thereby increasing the support effect, thereby improving the structural strength of the steel pipe segment body and preventing the steel pipe segment body from being flattened.

[0017] Furthermore, one side of each of the two end plates is connected to a pad, and one side of the pad is provided with a mounting hole.

[0018] By adopting the above technical solution, multiple steel pipe segment bodies are placed in place during splicing. At this time, multiple pads abut against each other, and the pads are used to increase the thickness of the end plates to avoid excessive compression and damage to the first sealing strip, the second sealing strip and the third sealing strip. The elasticity of the pads prevents damage to the steel pipe segment bodies due to excessive pressure, and can also provide a sealing effect to further prevent water seepage.

[0019] Furthermore, the pad is a nitrile cork rubber board.

[0020] By adopting the above technical solution, the elasticity of the pad can prevent the steel pipe segment from being damaged due to excessive pressure, and can also provide a sealing effect to further prevent water seepage.

[0021] In summary, the present invention has the following beneficial effects:

[0022] The utility model arranges the first sealing strip, the second sealing strip and the third sealing strip. After the steel pipe segment body is spliced, the first sealing strip and the second sealing strip bite into each other to form a seal, and the joint between the two forms a maze shape, which effectively avoids water seepage in the early stage. The third sealing strip is located on the outside of the steel pipe segment body, so it will start to absorb water and swell when it comes into contact with water in the early stage, and its service life is longer. In the later stage, the third sealing strip is used to seal, which avoids water seepage after the first and second sealing strips are aged and damaged. The three sealing rings are used alternately in the front and rear stages to effectively seal and prevent water seepage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the first sealing strip structure of the utility model;

[0026] Figure 4 It is a schematic diagram of the explosion structure of the utility model.

[0027] In the figure: 1. Steel pipe segment body; 2. Rib plate; 3. End plate; 4. Pad; 5. Mounting hole; 6. First sealing strip; 7. Second sealing strip; 8. Third sealing strip. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] The following describes an embodiment of the present invention based on its overall structure.

[0030] Example 1:

[0031] Steel pipe sheet waterproof structure, such as Figures 1-4As shown, it includes a steel pipe segment body 1 and an end plate 3. Two end plates 3 are provided. A third sealing strip 8 is connected to the upper side of each end plate 3. The third sealing strip 8 is a rubber expansion water stop strip. In the later stage, the third sealing strip 8 is used for sealing to avoid water seepage after the first sealing strip 6 and the second sealing strip 7 are aged and damaged; one side of the two end plates 3 is respectively connected to a first sealing strip 6 and a second sealing strip 7. The first sealing strip 6 is in a "concave" shape, and the second sealing strip 7 is in a "convex" shape. The first sealing strip 6 is in contact with the second sealing strip 7. The first sealing strip 6 and the second sealing strip 7 are both made of nitrile rubber. The first sealing strip 6 and the second sealing strip 7 are engaged with each other to form a seal, and the joint between the two forms a maze, which effectively avoids water seepage in the early stage.

[0032] See Figure 1 、 Figure 2 and Figure 4 In the above embodiment, two end plates 3 are respectively fixed on both sides of the steel pipe segment body 1, and a mounting hole 5 is opened on the other side of the end plate 3. When splicing, multiple steel pipe segment bodies 1 are placed in place, and then the fastening structure is passed through the mounting hole 5 to limit the multiple steel pipe segment bodies 1; ribs 2 are fixed inside the steel pipe segment body 1, and multiple ribs 2 are provided. The multiple ribs 2 are distributed in a fan-shaped array, and the structural strength is increased by the cooperation of the ribs 2 and the end plates 3.

[0033] Example 2:

[0034] On the basis of the above-mentioned embodiment 1, in order to avoid damage to the structure due to excessive contact pressure when tightening the structure, the following settings are now adopted.

[0035] See Figure 1 、 Figure 2 and Figure 4 In the above embodiment, one side of each of the two end plates 3 is connected to a pad 4, and a mounting hole 5 is opened on one side of the pad 4. The pad 4 is a nitrile cork rubber plate. The elasticity of the pad 4 prevents damage to the steel pipe segment body 1 due to excessive pressure, and can also play a sealing role to further prevent water seepage.

[0036] The implementation principle of the present invention is as follows: first, multiple steel pipe segments 1 are placed in place when splicing, and multiple backing plates 4 are abutted against each other. Then, the fastening structure is passed through the mounting hole 5 to limit the multiple steel pipe segments 1. The elasticity of the backing plates 4 prevents the steel pipe segments 1 from being damaged due to excessive pressure, and can also play a sealing role to further prevent water seepage. At the same time, the ribs 2 and end plates 3 cooperate to increase the structural strength.

[0037] After the steel pipe segment main body 1 is spliced, the first sealing strip 6 and the second sealing strip 7 bite into each other to form a seal, and the joint between the two forms a maze shape, which effectively avoids water seepage in the early stage. The third sealing strip 8 is located on the outside of the steel pipe segment main body 1, so it will begin to absorb water and expand when it comes into contact with water in the early stage, and its service life is longer. In the later stage, it is sealed by the third sealing strip 8 to avoid water seepage after the first sealing strip 6 and the second sealing strip 7 are aged and damaged.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A steel pipe segment waterproof structure, comprising a steel pipe segment body (1) and an end plate (3), characterized in that: Two end plates (3) are provided, and a third sealing strip (8) is connected to the upper side of each of the two end plates (3), and a first sealing strip (6) and a second sealing strip (7) are respectively connected to one side of the two end plates (3).

2. The steel pipe sheet waterproof structure according to claim 1, characterized in that: The first sealing strip (6) is in a concave shape, and the second sealing strip (7) is in a convex shape.

3. The steel pipe sheet waterproof structure according to claim 2, characterized in that: The first sealing strip (6) and the second sealing strip (7) are in contact with each other, and both the first sealing strip (6) and the second sealing strip (7) are made of nitrile rubber.

4. The steel pipe sheet waterproof structure according to claim 1, characterized in that: The third sealing strip (8) is a rubber expansion water stop strip.

5. The steel pipe sheet waterproof structure according to claim 1, characterized in that: The two end plates (3) are respectively fixed on both sides of the steel pipe segment body (1), and a mounting hole (5) is opened on the other side of the end plate (3). A rib plate (2) is fixed inside the steel pipe segment body (1).

6. The steel pipe segment waterproof structure according to claim 5, characterized in that: A plurality of ribs (2) are provided, and the plurality of ribs (2) are distributed in a fan-shaped array.

7. The steel pipe segment waterproof structure according to claim 5, characterized in that: One side of each of the two end plates (3) is connected to a backing plate (4), and one side of the backing plate (4) is provided with a mounting hole (5).

8. The steel pipe segment waterproof structure according to claim 7, characterized in that: The backing plate (4) is a nitrile cork rubber plate.

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