Concrete segment

Abstract

The utility model discloses a concrete duct piece which comprises a duct piece body, auxiliary supporting hole positions are arranged on the two sides of the inner surface of the duct piece body, a lower bearing strip and an upper pressing strip are further arranged on the two sides of the duct piece body respectively, the width of the lower bearing strip is the same as that of the upper pressing strip, the top face of the lower bearing strip is a tooth-shaped top face, and the top face of the upper pressing strip is a tooth-shaped top face. The bottom face of the upper pressing strip is a tooth-shaped bottom face matched with the tooth-shaped top face. The problem that an existing concrete pipe piece is inconvenient to replace after being broken is solved.

Description

Technical Field

[0001] The utility model relates to the field of pipe segment structures, in particular to a concrete pipe segment. Background Art

[0002] Concrete segments are a type of supporting structure used in subway tunnels. They can be used in areas with complex geological conditions and are stable, safe, and economical. Concrete segments are made of high-strength cement and reinforced concrete, and are frost-resistant, corrosion-resistant, and durable. They can maintain good performance for a long time during use.

[0003] When installing concrete segments in subway tunnels, they are used in conjunction with shield machines. Every time a section of the concrete segments is moved forward, a part of the concrete segments is installed for support. The concrete segments are arranged in a ring. The existing concrete segment structure is generally simple, generally a prefabricated segment body, and then holes for clamping and installation are opened on the inner surface of the segment body. For details, please refer to the utility model patent with application number "CN202222331205.0". The existing segment still has certain defects. The main one is that it is easy to crack or partially collapse due to stress problems during use. The general treatment method of the prior art is that if the collapse is small, it will be temporarily ignored. If the collapse is large, it will be repaired with epoxy mortar. However, after the above method is used, there are still some problems. If it is ignored, a large noise will occur when the segment vibrates due to external force. After the repair, it is found that its bearing capacity is generally reduced a lot. Therefore, this problem needs to be solved. Utility Model Content

[0004] The purpose of the utility model is to provide a concrete pipe segment to solve the problem that the existing concrete pipe segment is inconvenient to replace after collapse. In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A concrete pipe segment comprises a pipe segment body, auxiliary support holes are provided on both sides of the inner surface of the pipe segment body, and a lower connecting strip and an upper pressure strip are respectively provided on both sides of the pipe segment body, the lower connecting strip and the upper pressure strip have the same width, the top surface of the lower connecting strip is a serrated top surface, and the bottom surface of the upper pressure strip is a serrated bottom surface adapted to the serrated top surface.

[0006] First of all, there are two problems that hinder the replacement of concrete pipe segments. The first is the stress problem during the replacement process. Because when a broken pipe segment is removed, the pipe segments on both sides will inevitably be squeezed toward the middle, which will affect the overall structure. Then the second problem is that grooves and plug-in plates are usually set between the existing concrete pipe segments. This is for sealing and waterproofing. The grooves and plug-in plates are generally set at the center position on both sides of the concrete pipe segment. This makes it inconvenient to remove the broken concrete pipe segment from between the two concrete pipe segments. Therefore, its two sides have been stuck in the structure of the other two concrete pipe segments. In order to solve the above problems, the present application first sets auxiliary support holes on both sides of the inner surface of the pipe segment body, so that when it is needed When replacing a broken concrete segment, it is only necessary to insert the two ends of the supporting mechanism into the auxiliary supporting holes of the concrete segments on both sides of the broken concrete segment, and then adjust the appropriate supporting force to complete the supporting work. After completing the supporting work, dig the broken concrete segment out from between the two good concrete segments, and then insert the new concrete segment between the two good concrete segments to complete the replacement. In addition, since the sealing structure in this scheme is a lower connecting strip and an upper pressure strip, and the lower connecting strip and the upper pressure strip are in an upper and lower overlapping relationship rather than an inserted and clamped relationship, the broken segment body can be easily removed without being stuck, and the meshing of the toothed top surface and the toothed bottom surface plays a sealing role.

[0007] As a further preferred embodiment of the present invention, grouting holes are evenly distributed on the outer surface of the segment body. Since grouting is required between the segment body and the soil after the segment body is installed, the grouting holes can be better connected to the grouting layer as a whole, and the force is more evenly applied.

[0008] As a further preferred embodiment of the present invention, the grouting hole includes a connecting portion and an anchoring portion which are sequentially arranged from the outside to the inside.

[0009] As a further preferred embodiment of the present invention, the inner surface of the tube segment body is also coated with an anti-condensation nano coating.

[0010] Due to the temperature and air humidity in subway tunnels, water droplets are easily condensed on the surface. Excessive water droplets will condense and drip onto the subway, causing erosion on its surface. In order to prevent this problem, an anti-condensation nano coating is applied.

[0011] As a further preferred embodiment of the present invention, sealing strips are provided at the upper concave portion of the toothed top surface and the lower concave portion of the toothed bottom surface of the tube segment body.

[0012] The sealing effect is better.

[0013] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0014] 1. It is convenient to replace the damaged segment body.

[0015] 2. Because grouting is required between the segment body and the soil after the segment body is installed, grouting holes are set to better connect with the grouting layer as a whole and to provide more uniform force.

[0016] 3. Due to the temperature and air humidity in the subway tunnel, water droplets are easily condensed on the surface. After the excessive water droplets condense, they will drip onto the subway and cause erosion on its surface. In order to prevent this problem, an anti-condensation nano coating is applied.

[0017] 4. The sealing effect between the segments is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the meshing structure between the toothed top surface and the toothed bottom surface. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0023] 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, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which 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 element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiment 1:

[0027] Figure 1 , Figure 2 A concrete pipe segment is shown, including a pipe segment body, auxiliary support holes 2 are provided on both sides of the inner surface of the pipe segment body 1, and lower connecting strips 3 and upper pressure strips 4 are respectively provided on both sides of the pipe segment body 1. The lower connecting strips 3 and upper pressure strips 4 have the same width, the top surface of the lower connecting strip 3 is a serrated top surface, and the bottom surface of the upper pressure strip 4 is a serrated bottom surface adapted to the serrated top surface.

[0028] First of all, there are two problems that hinder the replacement of concrete pipe segments. The first is the stress problem during the replacement process. Because when a broken pipe segment is removed, the pipe segments on both sides will inevitably be squeezed toward the middle, which will affect the overall structure. Then the second problem is that grooves and plug-in plates are usually set between the existing concrete pipe segments. This is for sealing and waterproofing. The grooves and plug-in plates are generally set at the center position on both sides of the concrete pipe segment. This makes it inconvenient to remove the broken concrete pipe segment from between the two concrete pipe segments. Therefore, its two sides have been stuck in the structure of the other two concrete pipe segments. In order to solve the above problems, the present application first sets auxiliary support holes on both sides of the inner surface of the pipe segment body, so that when it is needed When replacing a broken concrete segment, it is only necessary to insert the two ends of the supporting mechanism into the auxiliary supporting holes of the concrete segments on both sides of the broken concrete segment, and then adjust the appropriate supporting force to complete the supporting work. After completing the supporting work, dig the broken concrete segment out from between the two good concrete segments, and then insert the new concrete segment between the two good concrete segments to complete the replacement. In addition, since the sealing structure in this scheme is a lower connecting strip and an upper pressure strip, and the lower connecting strip and the upper pressure strip are in an upper and lower overlapping relationship rather than an inserted and clamped relationship, the broken segment body can be easily removed without being stuck, and the meshing of the toothed top surface and the toothed bottom surface plays a sealing role. Specific embodiment 2:

[0030] This embodiment further illustrates the segment body 1 on the basis of the specific embodiment 1, and grouting holes are evenly distributed on the outer surface of the segment body 1.

[0031] Because grouting is required between the segment body and the soil after the segment body is installed, the grouting holes are set up to better connect with the grouting layer as a whole and to provide more uniform force. Specific embodiment 3:

[0033] This embodiment further illustrates the grouting hole on the basis of the specific embodiment 2, and the grouting hole includes a connecting portion and an anchoring portion which are sequentially arranged from the outside to the inside. Specific embodiment 4:

[0035] This embodiment further illustrates the tube segment body 1 on the basis of the specific embodiment 1, and the inner surface of the tube segment body 1 is also coated with an anti-condensation nano coating.

[0036] Due to the temperature and air humidity in subway tunnels, water droplets are easily condensed on the surface. Excessive water droplets will condense and drip onto the subway, causing erosion on its surface. In order to prevent this problem, an anti-condensation nano coating is applied. Specific embodiment 5:

[0038] This embodiment further illustrates the tube segment body 1 on the basis of the specific embodiment 1. The upper concave part of the toothed top surface and the lower concave part of the toothed bottom surface of the tube segment body 1 are both provided with sealing strips 5.

[0039] The sealing effect is better.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete segment, comprising a segment body, characterized in that: Auxiliary support holes (2) are provided on both sides of the inner surface of the segment body (1), and a lower support strip (3) and an upper pressure strip (4) are also provided on both sides of the segment body (1), respectively. The lower support strip (3) and the upper pressure strip (4) have the same width, the top surface of the lower support strip (3) is a toothed top surface, and the bottom surface of the upper pressure strip (4) is a toothed bottom surface adapted to the toothed top surface.

2. The concrete segment according to claim 1, characterized in that: Grouting holes are evenly distributed on the outer surface of the segment body (1).

3. The concrete segment according to claim 2, characterized in that: The grouting hole comprises a connecting portion and an anchoring portion which are sequentially arranged from the outside to the inside.

4. The concrete segment according to claim 1, characterized in that: The inner surface of the tube segment body (1) is also coated with an anti-condensation nano coating.

5. The concrete segment according to claim 1, characterized in that: The upper concave portion of the toothed top surface and the lower concave portion of the toothed bottom surface of the tube segment body (1) are both provided with sealing strips (5).

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