Anchoring part and tunnel waterproof structure
By introducing anchor rods and welded seats into the anchor components, the problem of water leakage caused by steel bars penetrating the waterproof layer in traditional anchor-sprayed lining structures was solved, thus achieving the integrity and waterproofing effect of the tunnel waterproof layer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-10
AI Technical Summary
In traditional anchor-sprayed lining tunnels, the joints where the reinforcing bars penetrate the waterproof layer lack effective waterproofing treatment, resulting in an incomplete waterproof layer, which is prone to water leakage and affects the safety of the tunnel structure.
Anchoring components are used, including anchor rods and welding seats. The anchor rods have a first snap-fit part on the outside and a connecting hole on the inside. The connecting hole wall has a second snap-fit part. The welding seat is welded to the waterproof layer, and the connecting rod is snapped in the connecting hole to ensure the integrity of the waterproof layer.
By designing the anchors, the steel bars are prevented from penetrating the waterproof layer, maintaining the integrity of the waterproof layer, avoiding water leakage, and ensuring the waterproof effect of the tunnel structure.
Smart Images

Figure CN223984482U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tunnel waterproofing technology, and more specifically, relates to an anchor and a tunnel waterproofing structure. Background Technology
[0002] In traditional shotcrete tunnel structures, the waterproofing layer is laid tightly against the surrounding rock surface. The supporting arches or wire mesh, serving as the framework layer, require steel bars inserted into the rock surface for fixation. These bars must penetrate the waterproofing layer to ensure secure anchorage. In traditional methods, the points where the steel bars penetrate the waterproofing layer are often overlooked due to the lack of effective waterproofing solutions. These points are highly susceptible to water leakage later on. Since shotcrete tunnels lack secondary concrete lining, the leaked water quickly forms large areas of dampness or even flows, severely compromising the tunnel's structural safety. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing an anchor and a tunnel waterproofing structure, thereby solving the problem that in existing technologies, the reinforcing steel bars used to fix the skeleton layer in the tunnel pass through the waterproofing layer on the inner wall of the tunnel, resulting in an incomplete waterproofing layer and affecting the waterproofing effect.
[0004] To achieve the above objectives, this utility model provides an anchor, comprising:
[0005] An anchor rod and a welding seat disposed at one end of the anchor rod. The outer side of the anchor rod is provided with a first snap-fit portion, and the inside of the anchor rod is provided with a connecting hole. The connecting hole forms an opening at the end of the anchor rod near the welding seat. The welding seat is used for welding with a waterproof layer. The wall of the connecting hole is provided with a second snap-fit portion, which is used for snapping with a connecting rod inserted into the connecting hole.
[0006] Optionally, the first snap-fit portion and the second snap-fit portion are threaded or barbed structures.
[0007] Optionally, the anchor rod and the welding seat are integrally formed.
[0008] Optionally, the anchor is made of hot-melt plastic.
[0009] Optionally, the anchor is made of high-density polyethylene.
[0010] Optionally, the welding seat includes a welding seat body and a reinforcing seat disposed on the side of the welding seat body near the anchor rod, the reinforcing seat being integrally connected to the anchor rod.
[0011] Optionally, both the welding seat body and the reinforcing seat are disc-shaped, and the diameter of the welding seat body is larger than the diameter of the reinforcing seat.
[0012] This utility model also provides a waterproof tunnel structure, including:
[0013] A waterproof layer and a concrete layer are sequentially installed on the inner wall of the tunnel. A skeleton layer is installed inside the concrete layer, and a connecting rod is connected to the skeleton layer.
[0014] The aforementioned anchor has an anchor rod that penetrates the waterproof layer and is inserted into the inner wall of the tunnel; the welding seat is welded to the side of the waterproof layer near the concrete layer; and the connecting rod is connected in the connecting hole.
[0015] Optionally, the waterproof layer is a polymer waterproof membrane.
[0016] Optionally, the skeleton layer is a flower arch frame structure or a wire mesh structure.
[0017] This utility model provides an anchor and a tunnel waterproof structure, the advantages of which are: the anchor has a welding seat at one end of the anchor rod, and when the anchor rod is inserted into the anchor hole for anchoring, the welding seat can be connected to the waterproof layer through which the anchor rod passes, ensuring the integrity of the waterproof layer. The connecting hole inside the anchor rod can be connected to the connecting rod, so that the connecting rod that needs to be inserted into the anchor hole can be connected inside the anchor rod without damaging the integrity of the waterproof layer, thus ensuring the waterproof effect of the waterproof layer.
[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.
[0020] Figure 1 A schematic diagram of the structure of an anchor according to an embodiment of the present invention is shown.
[0021] Figure 2 It shows Figure 1 A schematic diagram of the structure viewed from below.
[0022] Figure 3 A schematic diagram of a tunnel waterproofing structure according to an embodiment of the present invention is shown.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Anchor rod; 2. Connecting hole; 3. Welded seat body; 4. Reinforcing seat; 5. Surrounding rock; 6. Waterproof layer; 7. Concrete layer; 8. Skeleton layer; 9. Threaded steel bar. Detailed Implementation
[0025] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0026] like Figure 1 and Figure 2 As shown, this utility model provides an anchor, comprising:
[0027] An anchor rod 1 and a welding seat set at one end of the anchor rod 1. The outer side of the anchor rod 1 is provided with a first snap-fit part, and the inside of the anchor rod 1 is provided with a connecting hole 2. The connecting hole 2 forms an opening at the end of the anchor rod 1 near the welding seat. The welding seat is used to weld with the waterproof layer 6. The hole wall of the connecting hole 2 is provided with a second snap-fit part, which is used to snap-fit with the connecting rod inserted into the connecting hole 2.
[0028] Specifically, to address the problem in the prior art where the reinforcing steel bars used to fix the skeleton layer 8 in the tunnel pass through the waterproof layer 6 on the inner wall of the tunnel, causing the waterproof layer 6 to be incomplete and affecting the waterproofing effect, the anchor provided by this utility model has a welding seat at one end of the anchor rod 1. When the anchor rod 1 is inserted into the anchor hole for anchoring, the welding seat can connect with the waterproof layer 6 through which the anchor rod 1 passes, ensuring the integrity of the waterproof layer 6. The connecting hole 2 inside the anchor rod 1 can connect with the connecting rod, so that the connecting rod that needs to be inserted into the anchor hole can be connected inside the anchor rod 1 without damaging the integrity of the waterproof layer 6, thus ensuring the waterproofing effect of the waterproof layer 6.
[0029] Optionally, the first and second snap-fit portions are threaded or barbed structures.
[0030] Specifically, the first locking part is used to lock with the inner wall of the anchoring hole when the anchoring rod 1 is inserted into the anchoring hole, thereby improving the ability to prevent the anchoring rod 1 from coming out of the anchoring hole. The second locking part is used to lock with the outer wall of the connecting rod when the connecting rod is inserted into the connecting hole 2, thereby improving the ability to prevent the connecting rod from coming out of the connecting hole 2.
[0031] In this embodiment, for ease of processing, the first snap-fit part can adopt an external thread structure, and the second snap-fit part can adopt an internal thread structure, that is, the anchor rod 1 forms a structure with internal and external double threads.
[0032] In this embodiment, the connecting rod is a threaded steel bar 9, which can be threadedly connected to the connecting hole 2 with an internal thread structure.
[0033] Optionally, the anchor rod 1 and the welding seat are integrally formed.
[0034] Specifically, the anchor rod 1 and the welding seat adopt an integral molding structure, that is, the anchor is an integral structure, which is convenient for processing.
[0035] Optionally, the anchor material is hot-melt plastic.
[0036] Specifically, both the anchor rod 1 and the welding seat of the anchor are made of hot melt plastic. The welding seat can be welded to the waterproof layer 6 by hot melting.
[0037] In this embodiment, the anchor is made of high-density polyethylene.
[0038] Optionally, the welding seat includes a welding seat body 3 and a reinforcing seat 4 disposed on the side of the welding seat body 3 near the anchor rod 1, the reinforcing seat 4 being integrally connected to the anchor rod 1.
[0039] Specifically, the reinforcing seat 4 and the welding seat body 3 are an integral structure and made of the same material. The reinforcing seat 4 can strengthen the connection between the anchor rod 1 and the welding seat. When welding to the waterproof layer 6, both the reinforcing seat 4 and the welding seat body are heat-fused to the waterproof layer 6.
[0040] Optionally, both the welding seat body 3 and the reinforcing seat 4 are disc-shaped, and the diameter of the welding seat body 3 is larger than the diameter of the reinforcing seat 4.
[0041] Specifically, under the action of the hot air welding gun, the reinforcing seat 4 and the welding seat plate are both hot-melted welded to one side of the waterproof layer 6, with the reinforcing seat 4 inside and the welding seat body 3 outside.
[0042] like Figure 3 As shown, this utility model also provides a tunnel waterproof structure, including:
[0043] A waterproof layer 6 and a concrete layer 7 are sequentially installed on the inner wall of the tunnel. A skeleton layer 8 is installed inside the concrete layer 7, and a connecting rod is connected to the skeleton layer 8.
[0044] The anchor rod 1 of the aforementioned anchor rod penetrates the waterproof layer 6 and is inserted into the inner wall of the tunnel. The welding seat is welded to the side of the waterproof layer 6 near the concrete layer 7. The connecting rod is connected in the connecting hole 2.
[0045] Specifically, the inner wall of the tunnel is formed by the surrounding rock 5 around the tunnel. The waterproof layer 6 is set tightly against the surrounding rock 5. In order to fix the skeleton layer 8, the connecting rod connected to the skeleton layer 8 needs to pass through the waterproof layer 6 and be inserted into the anchoring hole in the surrounding rock 5. The anchoring rod 1 of the above-mentioned anchor passes through the waterproof layer 6 and is inserted into the anchoring hole to achieve anchoring connection with the surrounding rock 5. The welding seat of the anchor is attached to the side of the waterproof layer 6 away from the surrounding rock 5 and welded to the waterproof layer 6 to ensure the integrity of the waterproof layer 6 and its waterproof effect. At the same time, the connecting rod connecting the skeleton layer 8 is connected in the anchoring rod 1, which can also achieve the fixation of the skeleton layer 8.
[0046] In this embodiment, concrete layer 7 is a shotcrete structure.
[0047] In this embodiment, the waterproof layer 6 is a polymer waterproof membrane.
[0048] In this embodiment, the skeleton layer 8 is a flower arch frame structure or a wire mesh structure.
[0049] In this embodiment, the welding seat of the aforementioned anchor is welded to the waterproof membrane with holes in the tunnel, with a welding width of ≥10cm, thereby achieving the sealing effect of the waterproof system in the tunnel. This avoids the tunnel leakage caused by the threaded steel bars 9 of the tunnel skeleton layer 8 penetrating the waterproof layer 6, and solves the stubborn problem of water leakage at the root of the threaded steel bars 9 of the traditional anchor spray tunnel arch frame / wire mesh.
[0050] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. An anchor, characterized in that, The anchor rod is provided with a first clamping part on the outer side, and a connecting hole is arranged in the interior of the anchor rod, the connecting hole is open at the end of the anchor rod close to the welding seat, the welding seat is used for welding with a waterproof layer, and the hole wall of the connecting hole is provided with a second clamping part used for clamping with a connecting rod inserted into the connecting hole. The first clamping part and the second clamping part are screw thread structures or barb structures.
2. The anchor of claim 1, wherein The anchor rod and the welding seat are integrally formed.
3. The anchor of claim 1, wherein, The material of the anchor is hot melt plastic.
4. The anchor of claim 1, wherein, The material of the anchor is high-density polyethylene.
5. The anchor of claim 4, wherein, The welding seat comprises a welding seat body and a reinforcing seat arranged on the side of the welding seat body close to the anchor rod, and the reinforcing seat is integrally connected with the anchor rod.
6. The anchor of claim 1, wherein, The welding seat body and the reinforcing seat are both disc-shaped, and the diameter of the welding seat body is larger than that of the reinforcing seat.
7. The anchor of claim 6, wherein, The anchor rod is provided with a first clamping part on the outer side, and a connecting hole is arranged in the interior of the anchor rod, the connecting hole is open at the end of the anchor rod close to the welding seat, the welding seat is used for welding with a waterproof layer, and the hole wall of the connecting hole is provided with a second clamping part used for clamping with a connecting rod inserted into the connecting hole.
8. A tunnel waterproofing structure, characterized by, The waterproof layer is a high polymer waterproof board. The framework layer is a flower arch structure or a steel wire mesh structure. The anchor rod is provided with a first clamping part on the outer side, and a connecting hole is arranged in the interior of the anchor rod, the connecting hole is open at the end of the anchor rod close to the welding seat, the welding seat is used for welding with a waterproof layer, and the hole wall of the connecting hole is provided with a second clamping part used for clamping with a connecting rod inserted into the connecting hole.
9. The tunnel waterproofing structure according to claim 8, wherein 10. The tunnel waterproofing structure according to claim 8, wherein