Reinforcing assembly for tunnel

Abstract

The utility model provides a reinforcing component for a tunnel, which comprises a reinforcement cage framework fixed on the inner surface of the tunnel, an accommodating space is arranged between the inner surface of the tunnel and the reinforcement cage framework, and a high polymer layer formed by solidifying high polymer slurry is filled in the accommodating space; the other side of the reinforcement cage framework is further fixedly connected with a concrete canvas layer. The utility model aims to obtain a tunnel reinforcing structure with high cost performance.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel reinforcement, in particular to a reinforcement component for a tunnel. Background Art

[0002] At present, underground pipelines are the lifeline of cities. As the service life increases, various diseases will occur in underground pipelines, which need to be reinforced in time. At present, the reinforcement and repair of pipelines can generally be divided into two categories: excavation repair and trenchless repair. Trenchless repair does not affect ground traffic and can minimize the impact of construction on urban residents. Therefore, trenchless repair technology is favored by the industry. Existing trenchless technologies include spraying cement slurry, spraying polymers, etc. These repair technologies require large-scale machinery and equipment, which are costly and inconvenient to construct.

[0003] The utility model with the existing patent publication number CN214836381U discloses a municipal tunnel reinforcement structure, including a tunnel body and a concrete layer arranged on the inner wall of the tunnel body, the concrete layer is connected with a reinforcement mechanism, the reinforcement mechanism includes an anchor rod, the anchor rod includes a rod body and at least one first anti-slip rod, one end of the rod body is penetrated in the side wall of the tunnel body, the other end of the rod body is penetrated in the concrete layer, the side wall of a section of the rod body in the concrete layer is fixed with the first anti-slip rod, the first anti-slip rod is tilted, and the first anti-slip rod extends away from one end of the rod body toward the side wall of the tunnel body. Although it has the effect of extending the service life of the concrete layer and improving the stability of the tunnel structure. However, the entire reinforcement structure needs to be spaced apart to set a plurality of anchor rods, and the anchor rod spacing is set too far to have no reinforcement effect, and the setting is too close to cause certain loss to the concrete layer of the inner wall of the tunnel body, and then the reinforcement effect of the reinforcement structure needs to be considered. Then it is urgent to provide a reinforcement structure with high cost performance. Utility Model Content

[0004] The main purpose of the utility model is to provide a reinforcement component for a tunnel, aiming to solve the problem that the cost performance ratio of existing tunnel reinforcement is not high.

[0005] To achieve the above object, the utility model provides a reinforcement assembly for a tunnel, the reinforcement assembly comprising a steel cage frame fixed to the inner surface of the tunnel, a receiving space between the inner surface of the tunnel and the steel cage frame, the receiving space being filled with a polymer layer after the polymer slurry is cured;

[0006] A concrete canvas layer is also fixedly connected to the other side of the steel cage framework.

[0007] Optionally, the steel cage skeleton is further provided with grouting holes, and the grouting holes are used to inject polymer slurry into the accommodation space.

[0008] Optionally, the surface of the steel cage skeleton is distributed in a hollow mesh shape.

[0009] Optionally, the concrete canvas layer includes a concrete canvas body and a felt layer located on one side of the concrete canvas body.

[0010] Optionally, the concrete canvas layer is laid integrally on the steel cage skeleton.

[0011] Optionally, the structure of the concrete canvas body includes, from bottom to top, a fiber mesh bottom layer, a three-dimensional mesh structure support skeleton layer, and a fiber mesh top layer;

[0012] Each layer is connected as a whole in a blanket shape, and the three-dimensional space of the three-dimensional mesh structure supporting the skeleton layer is filled with a high-strength mortar layer, and the fiber mesh bottom layer is connected to the felt layer.

[0013] Optionally, the thickness of the felt layer ranges from 2 to 6 mm, and the thickness of the concrete canvas body ranges from 8 to 30 mm.

[0014] Optionally, the thickness of the high-strength mortar layer is 9 to 28 mm.

[0015] Optionally, the thickness of the three-dimensional mesh structure supporting skeleton layer ranges from 9 to 28 mm, and the mesh aperture ranges from 3 to 8 mm.

[0016] Beneficial effects:

[0017] (1) The concrete canvas in the reinforcement assembly for the tunnel of the utility model solidifies when it comes into contact with water, and can cooperate with the steel bars to bear force and enhance the strength of the tunnel. In addition, the concrete canvas can provide a membrane shell for the solidification of the polymer slurry and does not need to be removed, which is green and environmentally friendly.

[0018] (2) The polymer material is composed of two components, A and B. When the two components are mixed, a curing reaction begins to occur, and the polymer can play an anti-seepage and heat-insulating role, thereby solving the problem of tunnel leakage and preventing freeze-thaw damage to the inner wall of the tunnel.

[0019] (3) The setting of the entire reinforcement assembly can effectively enhance the reinforcement effect of the tunnel, does not require the use of large-scale mechanical equipment and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a structural schematic diagram of an embodiment of a reinforcement assembly for a tunnel according to the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure before polymer injection.

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0024] Description of Figure Numbers:

[0025] Label name Label name 1 tunnel 2 Steel cage skeleton 3 Concrete canvas layer 4 Accommodation space 5 Grouting holes 6 Polymer layer DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] The utility model provides a reinforcement component for a tunnel. Figure 1-2As shown, the reinforcement assembly includes a steel cage frame 2 fixed on the inner surface of the tunnel 1, and there is a receiving space 4 between the inner surface of the tunnel 1 and the steel cage frame 2, and the receiving space 4 is filled with a polymer layer 6 after the polymer slurry is solidified; the other side of the steel cage frame 2 is also fixedly connected to a concrete canvas layer 3, wherein the concrete canvas layer 3 can be solidified and formed after being sprinkled with water and soaked, and is tightly connected to the connected steel cage frame 2, thereby achieving coordinated force with the steel bars and enhancing the strength of the tunnel; at the same time, the concrete canvas layer 3 close to the side of the steel cage frame 2 can also provide a membrane shell for the solidification of the polymer slurry, which is convenient for the solidification and forming of the polymer slurry. The setting of the entire reinforcement assembly can effectively enhance the reinforcement effect of the tunnel, does not require the use of large-scale mechanical equipment and is low in cost.

[0031] Furthermore, if Figure 2 As shown, the steel cage skeleton 2 is also provided with a grouting hole 5, which is used to inject polymer slurry into the accommodation space 4. When the polymer slurry needs to be injected, the grouting hole 5 is connected to the external polymer loading equipment, and the connection will be disconnected after the grouting is completed. The polymer material is composed of two components, A and B. When the two components are mixed, a curing reaction begins to occur. Based on the polymer, it can play an anti-seepage and heat-insulating role, thereby solving the problem of tunnel leakage and preventing freeze-thaw damage to the inner wall of the tunnel.

[0032] Furthermore, the surface of the steel cage skeleton 2 is distributed in a hollow mesh shape. This arrangement can make the connection between the steel cage skeleton 2, the polymer layer 6 and the concrete canvas layer 3 more stable, and can also strengthen the synergistic effect between the steel cage skeleton 2, the polymer layer 6 and the concrete canvas layer 3, ultimately achieving the reinforcement performance of the tunnel.

[0033] Furthermore, the concrete canvas layer 3 is laid integrally on the steel cage skeleton 2, thereby strengthening the overall integrity and firmness of the cured concrete canvas layer 3, thereby enhancing the strength of the tunnel.

[0034] Furthermore, the concrete canvas layer 3 includes a concrete canvas body and a felt layer located on one side of the concrete canvas body. Specifically, the structure of the concrete canvas body includes, from bottom to top, a fiber mesh bottom layer, a three-dimensional mesh structure support skeleton layer, and a fiber mesh top layer; each layer is sewn into an integral blanket shape by needle punching technology, that is, each layer is connected as a blanket, and the three-dimensional space of the three-dimensional mesh structure support skeleton layer is filled with a high-strength mortar layer, and the fiber mesh bottom layer is connected to the felt layer.

[0035] Preferably, the thickness of the felt layer is in the range of 2-6 mm, and the thickness of the concrete canvas body is in the range of 8-30 mm. The specific dimensions can be adjusted accordingly according to actual needs.

[0036] Furthermore, the thickness of the high-strength mortar layer is 9 to 28 mm. The high-strength mortar layer can be solidified and formed after contacting water. The specific size can be adjusted accordingly according to actual needs.

[0037] Furthermore, the thickness of the three-dimensional mesh structure support skeleton layer ranges from 9 to 28 mm, and the mesh aperture ranges from 3 to 8 mm. The setting of the mesh can facilitate external water to penetrate into the three-dimensional mesh structure support skeleton layer, and the specific size can be adjusted accordingly according to actual needs.

[0038] Further, in order to better illustrate the structure of the utility model, the following is a specific description through a specific operation process:

[0039] (1) A steel cage frame 2 is tied to the inner surface of the tunnel 1, and a certain gap is left between the steel cage frame 2 and the tunnel 1;

[0040] (2) Tie the concrete canvas to the steel cage frame 2, sprinkle water on the concrete canvas to make it harden, and there is no need to remove it after the construction is completed;

[0041] (3) Inject the polymer two-component grout into the cavity between the steel cage frame 2 and the tunnel 1 through the reserved grouting holes. The polymer material consists of two components, A and B, and a curing reaction begins to occur when the two components are mixed.

[0042] In the above embodiments, those skilled in the art may adopt the existing technology for software control, and the present invention only protects the structure of the reinforcement components used for the tunnel and the mutual connection relationship.

[0043] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or system including the element. The serial numbers of the above-mentioned embodiments of the utility model are for description only and do not represent the advantages and disadvantages of the embodiments.

[0044] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A reinforcement assembly for a tunnel, characterized in that: The reinforcement assembly comprises a steel cage frame (2) fixed to the inner surface of the tunnel (1), a receiving space (4) is provided between the inner surface of the tunnel (1) and the steel cage frame (2), and the receiving space (4) is filled with a polymer layer (6) formed by solidifying a polymer slurry; A concrete canvas layer (3) is also fixedly connected to the other side of the steel cage framework (2).

2. The reinforcement assembly for a tunnel according to claim 1, characterized in that: The steel cage framework (2) is also provided with grouting holes (5), and the grouting holes (5) are used to inject polymer slurry into the accommodation space (4).

3. The reinforcement assembly for a tunnel according to claim 1, characterized in that: The surface of the steel cage framework (2) is distributed in a hollow mesh shape.

4. The reinforcement assembly for a tunnel according to any one of claims 1 to 3, characterized in that: The concrete canvas layer (3) comprises a concrete canvas body and a felt layer located on one side of the concrete canvas body.

5. The reinforcement assembly for a tunnel according to claim 4, characterized in that: The concrete canvas layer (3) is laid integrally on the steel cage frame (2).

6. The reinforcement assembly for a tunnel according to claim 4, characterized in that: The structure of the concrete canvas body includes, from bottom to top, a fiber mesh bottom layer, a three-dimensional mesh structure support skeleton layer and a fiber mesh top layer; Each layer is connected as a whole in a blanket shape, and the three-dimensional space of the three-dimensional mesh structure supporting the skeleton layer is filled with a high-strength mortar layer, and the fiber mesh bottom layer is connected to the felt layer.

7. The reinforcement assembly for a tunnel according to claim 4, characterized in that: The thickness of the felt layer ranges from 2-6mm, and the thickness of the concrete canvas body ranges from 8-30mm.

8. The reinforcement assembly for a tunnel according to claim 6, characterized in that: The thickness of the high-strength mortar layer is 9 to 28 mm.

9. The reinforcement assembly for a tunnel according to claim 6, characterized in that: The thickness of the three-dimensional mesh structure supporting skeleton layer ranges from 9 to 28 mm, and the mesh aperture ranges from 3 to 8 mm.

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