Tunnel expansion bolt joint waterproof structure

Abstract

The utility model discloses a tunnel expansion bolt joint waterproof structure which comprises a rock body, a concrete layer is arranged on the outer side of the rock body, a mounting groove is formed in the outer side of the concrete layer, a bolt hole is formed in the middle of the interior of the mounting groove, and an expansion bolt is arranged in the middle of the interior of the bolt hole. An expansion waterstop ring is arranged between the nut and the gasket, a waterproof layer is sprayed on the outer side of the expansion bolt, non-woven fabric is arranged on the outer side of the concrete layer, sealant is arranged on the outer side of the nut and the outer side of the expansion waterstop ring, and the expansion waterstop ring is usually installed in a gap of a concrete structure and can expand when encountering water. And the sealant is of an arc-shaped structure made of a polyurethane material, has good elasticity and weather resistance, and can effectively prevent water and air from permeating to form an effective waterproof barrier, and due to the design, the working efficiency is improved, and meanwhile, the waterproof performance of the tunnel is also ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tunnel waterproof related technical field, concretely relates to a kind of tunnel expansion bolt node waterproof structure. BACKGROUND

[0002] Tunnel is an important underground engineering building, widely used in traffic, hydraulic, municipal and other fields, it is usually constructed in the hole under the ground by specific method, for realizing various functions, such as railway, highway, pedestrian, water supply, drainage, etc., the structure of tunnel includes main building and accessory equipment two parts, main building is composed of hole body and hole gate, accessory equipment includes car hole, fire-fighting facilities, emergency communication and drainage facilities, etc., tunnel can be classified according to its location, use, length, cross-sectional area and other factors, such as mountain tunnel, underwater tunnel, urban underground tunnel, etc., tunnel is in rock-soil layer, when tunnel passes through or is close to water-bearing stratum, it is always subjected to the penetration of underground water, especially when rainy season comes, tunnel leakage occurs more frequently, drainage plate is one of the widely used waterproof facilities in tunnel drainage.

[0003] But the existing tunnel is fixed by expansion bolt in tunnel body inner wall, but easily overlooked is that the fixed position of expansion bolt is difficult to effectively waterproof, and water seepage easily occurs, thereby affecting the safety and stability of tunnel. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of tunnel expansion bolt node waterproof structure to solve the problem that the existing tunnel is fixed by expansion bolt in tunnel body inner wall in the above background art, but easily overlooked is that the fixed position of expansion bolt is difficult to effectively waterproof, and water seepage easily occurs, thereby affecting the safety and stability of tunnel.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of tunnel expansion bolt node waterproof structure, including rock mass;

[0006] The concrete layer is arranged at the outer side of the rock mass, the mounting groove is arranged at the outer side of the concrete layer, the bolt hole is arranged at the inner middle position of the mounting groove, the expansion bolt is arranged at the inner middle position of the bolt hole, the nut is arranged at the top position of the expansion bolt, and the gasket is arranged at the bottom position of the nut;

[0007] The expansion waterstop ring is arranged at the middle position of the nut and the gasket, the waterproof layer is sprayed on the outer side of the expansion bolt, and the non-woven fabric is arranged at the outer side of the concrete layer.

[0008] Preferably, the non-woven fabric is adhesively connected to the concrete layer, and the sealant is arranged at the outer side of the nut and the expansion waterstop ring.

[0009] Preferably, the sealing glue is wrapped outside the nut and the expansion water stop ring, the sealing glue is sealed with the nut and the expansion bolt, and the sealing glue is embedded in the concrete layer.

[0010] Preferably, the nut is a regular hexagonal structure, the sealing glue is made of polyurethane material, and the sealing glue is made of a circular arc structure.

[0011] Preferably, a second waterproof plate is arranged at the position outside the upper side of the concrete layer, and a first waterproof plate is arranged at the position outside the lower side of the concrete layer.

[0012] Preferably, the first waterproof plate and the second waterproof plate are connected by welding, two welding points are arranged on the first waterproof plate and the second waterproof plate respectively, the second waterproof plate is wrapped outside the first waterproof plate, an air passage is arranged at the middle position of the two welding points, and the connection position of the first waterproof plate and the second waterproof plate is a trapezoidal structure.

[0013] Preferably, a steel mesh is arranged in the concrete layer in an array, and the concrete layer is fixedly connected with the rock mass.

[0014] Compared with the prior art, the tunnel expansion bolt node waterproof structure has the following beneficial effects:

[0015] 1、Through the setting of the expansion waterproof ring, waterproof layer, non-woven fabric and sealant, the expansion waterproof ring and the expansion bolt are used as waterproof and fixing elements in building structures, the expansion waterproof ring is usually installed in the gap of the concrete structure, which can expand when encountering water, thereby tightly pressing the surrounding concrete to achieve the effect of stopping water, the expansion bolt is a fastener that can automatically expand, mainly used for fixing objects to concrete or other hard materials, when the expansion bolt is tightened, its tail will expand tightly to hold the concrete, thereby achieving the purpose of fixation, the sealant is a circular arc structure of polyurethane material, which has good elasticity and weather resistance, can effectively prevent water and air penetration, and protect the tunnel from external environmental erosion, in addition, the sealant also has good adhesion, which can be firmly bonded to the outside of the nut and the expansion waterproof ring, forming an effective waterproof barrier, the connection between the non-woven fabric and the concrete layer is realized by pasting, which is simple and easy to implement, and can ensure that the non-woven fabric is tightly combined with the concrete layer to form a complete waterproof system, the non-woven fabric itself has good air and water permeability, which can effectively prevent water and air penetration, and protect the tunnel from external environmental erosion, the regular hexagonal structure of the nut makes it easier to be tightened by a wrench or screwdriver, improving the work efficiency, and the circular arc structure of the sealant can better adapt to the shape of the nut, ensuring that the sealing effect between them is better, this design not only improves the work efficiency, but also guarantees the waterproof performance of the tunnel.

[0016] 2、Through the setting of the first waterproof plate, the second waterproof plate, the welding point and the air channel, the first waterproof plate and the second waterproof plate can provide double-layer waterproof protection, enhance the waterproof performance of the overall structure, the design of the air channel allows air circulation, which helps to prevent water vapor condensation and mold growth, and keeps the structure inside dry and healthy, the first waterproof plate and the second waterproof plate are connected by welding, which can ensure that they will not loosen or fall off during long-term use, the existence of the two welding points makes the connection between the first waterproof plate and the second waterproof plate more firm, and also facilitates the later inspection and maintenance, the second waterproof plate is wrapped outside the first waterproof plate, which not only enhances the waterproof effect, but also makes the whole structure look more neat and beautiful, the design features and advantages of the first waterproof plate and the second waterproof plate make the waterproof structure more reliable, effectively improve the waterproof performance of the tunnel structure, and ensure the long-term safe operation of the tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model.

[0018] Figure 2 It is a structural schematic view of the waterproof plate in the utility model.

[0019] Figure 3The utility model discloses a waterproof layer's structure schematic view.

[0020] In the drawing: 1, rock mass; 2, concrete layer; 3, gasket; 4, nut; 5, air passage; 6, expansion waterstop ring; 7, sealant; 8, first waterproof board; 9, expansion bolt; 10, welding spot; 11, second waterproof board; 12, bolt hole; 13, waterproof layer; 14, mounting groove; 15, non-woven fabric. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the range of the utility model protection.

[0022] The utility model provides a kind of tunnel expansion bolt node waterproof structure as Figures 1-3 As shown in the drawing, it includes rock mass 1;

[0023] Rock mass 1 outer side position is provided with concrete layer 2, concrete layer 2 outer side position is provided with mounting groove 14, mounting groove 14 inside middle position is provided with bolt hole 12, bolt hole 12 inside middle position is provided with expansion bolt 9, expansion bolt 9 top position is provided with nut 4, nut 4 bottom position is provided with gasket 3;

[0024] Nut 4 and gasket 3 middle position are provided with expansion waterstop ring 6, expansion bolt 9 outer side is sprayed with waterproof layer 13, concrete layer 2 outer side position is provided with non-woven fabric 15.

[0025] Non-woven fabric 15 is pasted with concrete layer 2, nut 4 and expansion waterstop ring 6 outer side position is provided with sealant 7.

[0026] Sealant 7 is wrapped in nut 4 and expansion waterstop ring 6 outside, sealant 7 is sealed with nut 4 and expansion bolt 9 connection, sealant 7 is embedded in concrete layer 2.

[0027] Nut 4 is regular hexagon structure, sealant 7 is made of polyurethane material, sealant 7 is made of circular arc structure.

[0028] Concrete layer 2 upper outer side position is provided with second waterproof board 11, concrete layer 2 lower outer side position is provided with first waterproof board 8.

[0029] The first waterproof plate 8 and the second waterproof plate 11 are connected by welding, two welding points 10 are arranged on the first waterproof plate 8 and the second waterproof plate 11 respectively, the second waterproof plate 11 is wrapped outside the first waterproof plate 8, an air passage 5 is arranged at the middle position of the two welding points 10, and the connection position of the first waterproof plate 8 and the second waterproof plate 11 is in a trapezoidal structure.

[0030] The concrete layer 2 is internally arranged with a reinforcing mesh, and is fixedly connected with the rock mass 1.

[0031] In this embodiment, the specific implementation steps of the tunnel expansion bolt node waterproof structure are as follows: checking the construction site, cleaning the sundries and dust around the node, ensuring that the construction area is clean and tidy, selecting expansion bolts 9 of appropriate size and specification according to design requirements, drilling holes at predetermined positions, and the hole diameter and depth should meet the requirements of the expansion bolts 9, spraying a waterproof layer 13 outside the expansion bolts 9, then inserting the expansion bolts 9 into the holes, ensuring firm and vertical installation, sleeving a waterproof sleeve into the hole around the expansion bolts, ensuring that there is enough gap between the sleeve and the hole wall, after completing the installation of the node waterproof structure, testing the waterproof effect, checking the expansion bolt 9 installation quality and sealing effect, and finally checking according to the acceptance standard and design requirements, to ensure that the node waterproof structure meets the engineering standards and safety requirements.

[0032] As shown in Figures 1-3 , the nut 4 and the gasket 3 are provided with an expansion water stop ring 6 at the middle position, the expansion bolt 9 is sprayed with a waterproof layer 13 outside, the concrete layer 2 is provided with a non-woven fabric 15 at the outside position, the non-woven fabric 15 is adhesively connected with the concrete layer 2, the nut 4 and the expansion water stop ring 6 are provided with a sealant 7 at the outside position, the sealant 7 wraps the outside of the nut 4 and the expansion water stop ring 6, the sealant 7 is sealingly connected with the nut 4 and the expansion bolt 9, the sealant 7 is embedded in the concrete layer 2, the nut 4 is in a regular hexagonal structure, the sealant 7 is made of polyurethane material, and the sealant 7 is in a circular arc structure.

[0033] Preferably, the expansion water stop ring 6 and the sprayed waterproof layer 13 are arranged, and the circular arc-shaped sealant 7 made of polyurethane material can effectively improve the waterproof performance, prevent water from penetrating into the concrete layer, and protect the tunnel structure from erosion and damage. The nut 4 adopts a regular hexagonal structure, which makes the connection between the nut and the expansion bolt more firm, helps to enhance the structural stability of the whole node, and reduces the possibility of loosening due to vibration or external force. The sealant 7 is wrapped outside the nut 4 and the expansion water stop ring 6 and is embedded in the concrete layer 2, which makes the installation process more convenient and ensures the effective sealing connection between the sealant 7 and the nut and the expansion bolt 9, reduces the construction difficulty, and uses the corrosion-resistant polyurethane material to make the sealant 7, and the non-woven fabric 15 is arranged to be pasted and connected with the concrete layer 2, which can improve the durability and anti-aging ability of the waterproof structure, prolong its service life, and reduce the maintenance cost.

[0034] As shown in Figure 1 and Figure 2 , the second waterproof plate 11 is arranged at the upper outer side of the concrete layer 2, and the first waterproof plate 8 is arranged at the lower outer side of the concrete layer 2. The first waterproof plate 8 and the second waterproof plate 11 are connected by welding, and two welding points 10 are arranged on the first waterproof plate 8 and the second waterproof plate 11 respectively. The second waterproof plate 11 is wrapped outside the first waterproof plate 8, and an air channel 5 is arranged at the middle position of the two welding points 10. The connection between the first waterproof plate 8 and the second waterproof plate 11 is in a trapezoidal structure.

[0035] Preferably, the first waterproof plate 8 is located below the outer side of the concrete layer 2, and the second waterproof plate 11 is located above the outer side of the concrete layer 2. They are connected together by welding to form a double waterproof protective layer. Such design can effectively prevent water from penetrating into the concrete layer 2 from two directions, improve the waterproof effect, and the first waterproof plate 8 and the second waterproof plate 11 are connected by welding, and two welding points 10 are arranged above and below. This connection mode can ensure that the combination between the two waterproof plates is firm and not easy to loosen or crack, and enhances the stability and reliability of the overall waterproof structure. The air channel 5 is arranged between the two welding points 10, which is helpful to exclude the air or water vapor that may be left in the welding process, avoid the formation of air bag or water vapor accumulation in the waterproof plate, and keep the waterproof layer dry and stable.

[0036] As shown in Figure 1 , the steel bar net is arranged in the concrete layer 2, and the concrete layer 2 is fixedly connected with the rock mass 1.

[0037] Optionally, the reinforcing mesh can effectively enhance the tensile strength and carrying capacity of the concrete, so that the overall structure is more solid and stable. In tunnel engineering, this design can improve the compressive performance of the concrete layer, increase its carrying capacity, thereby enhancing the overall structural strength of the tunnel, and the fixed connection of the reinforcing mesh can enhance the bonding force between the concrete layer and the rock mass, reduce the structural damage caused by water seepage, corrosion and other factors, prolong the service life of the tunnel and reduce the maintenance cost.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A tunnel expansion bolt node waterproof structure, comprising a rock mass (1); A concrete layer (2) is arranged at the outer side of the rock mass (1), an installation groove (14) is arranged at the outer side of the concrete layer (2), a bolt hole (12) is arranged at the inner middle position of the installation groove (14), an expansion bolt (9) is arranged at the inner middle position of the bolt hole (12), a nut (4) is arranged at the top position of the expansion bolt (9), and a gasket (3) is arranged at the bottom position of the nut (4); characterized in that An expansion water stop ring (6) is arranged at the middle position of the nut (4) and the gasket (3), the expansion bolt (9) is sprayed with a waterproof layer (13) on the outer side, and a non-woven fabric (15) is arranged at the outer side of the concrete layer (2).

2. The waterproof structure of a tunnel expansion bolt node according to claim 1, characterized in that: The non-woven fabric (15) is adhesively connected with the concrete layer (2), and a sealant (7) is arranged at the outer side of the nut (4) and the expansion water stop ring (6).

3. A tunneling bolt node waterproof structure according to claim 2, characterized in that: The sealant (7) is wrapped outside the nut (4) and the expansion water stop ring (6), the sealant (7) is sealingly connected with the nut (4) and the expansion bolt (9), and the sealant (7) is embedded in the concrete layer (2).

4. The waterproof structure of a tunnel expansion bolt node according to claim 3, characterized in that: The nut (4) is a regular hexagonal structure, the sealant (7) is made of polyurethane material, and the sealant (7) is made of a circular arc structure.

5. The waterproof structure of a tunnel expansion bolt node according to claim 1, characterized in that: A second waterproof plate (11) is arranged at the outer side above the concrete layer (2), and a first waterproof plate (8) is arranged at the outer side below the concrete layer (2).

6. A tunneling bolt node waterproof structure according to claim 5, characterized in that: The first waterproof plate (8) and the second waterproof plate (11) are connected by welding, two welding points (10) are respectively arranged on the first waterproof plate (8) and the second waterproof plate (11), and the second waterproof plate (11) is wrapped outside the first waterproof plate (8).

7. The waterproof structure of a tunnel expansion bolt node according to claim 1, characterized in that: A steel mesh is arranged in the concrete layer (2) in an array, and the concrete layer (2) is fixedly connected with the rock mass (1).

8. The waterproof structure of a tunnel expansion bolt node according to claim 6, characterized in that: An air channel (5) is arranged at the middle position of the two welding points (10), and the connection between the first waterproof plate (8) and the second waterproof plate (11) is in a trapezoidal structure.

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