Drainage type back-attached water stop belt and seam waterproof and drainage structure
By designing drainage channels and water-blocking convex ribs on the water stop belt, combining thermoplastic elastomers and geotextiles, the problem of water leakage into construction joints or deformation joints under high water pressure is solved, effectively drainage and waterproofing effects are achieved, and construction complexity and cost are reduced.
Patent Information
- Application Number
- CN202422264708.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-14
AI Technical Summary
When the water pressure of the existing water stop is too high, too much water leakage will flow along the contact surface between the water stop and the concrete, and eventually enter the construction joint or deformation joint, resulting in the inability to fully achieve the water stop effect.
A drainage type back-mounted water stop is designed, with drainage channels and water-blocking convex ribs on the belt-shaped base. The drainage channels are located on the water-forwarding surface and the water-blocking convex ribs are located on the backwater surface. The thermoplastic elastomer material is used to enhance the lateral stiffness of the material to maintain a horizontal state, and combine geotextiles and non-asphalt self-adhesive glue to improve bonding and anti-seepage performance.
On the basis of maintaining the water stop function, the drainage function is added to effectively drain leakage of water, avoid water entering the construction joint or deforming joint, reduce construction processes and costs, and improve waterproof performance.
Smart Images
Figure CN223241449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building auxiliary equipment, in particular to a drainage type back-stick waterstop and a seam anti-drainage structure. Background Art
[0002] In tunnel construction, waterproof panels are often damaged during installation and operation, causing groundwater to enter between the waterproof panels and the secondary lining. Construction joints are formed because concrete is poured in sections, and expansion joints are set to accommodate the different settlements of the structure.
[0003] In order to prevent water seepage in construction joints and expansion joints, waterstops are arranged at concrete joints to prevent water leakage. Waterstops include embedded waterstops, back-attached waterstops, etc. Among them, back-attached waterstops can achieve waterproof function, prevent water from penetrating into other areas through the drainage board, and are conducive to grouting and repairing defects behind the lining, and are widely used.
[0004] However, the current waterstop can only isolate the leakage water in the rock layer to the outside of the construction joints and deformation joints, and only plays a water-stopping role. When the water pressure is too high and the leakage water is too much, the water will flow along the contact surface between the waterstop and the concrete, and eventually enter the construction joints and deformation joints, resulting in the inability to fully achieve the water-stopping effect. Utility Model Content
[0005] In view of this, one of the purposes of the present invention is to provide a drainage type back-stick waterstop to solve the technical problem that the waterstop in the prior art only plays a water-stopping role. When the water pressure is too high, too much water leaks and the water flows along the contact surface between the waterstop and the concrete, and eventually enters the construction joint and deformation joint, resulting in the inability to fully achieve the water-stopping effect.
[0006] The second purpose of the present utility model is to provide a seam drainage structure containing a drainage type back-stick waterstop.
[0007] In order to achieve one of the above-mentioned purposes, the utility model provides a drainage type back-stick waterstop, including a strip-shaped base, on which a drainage channel and a water-blocking rib are provided, and the drainage channel and the water-blocking rib are integrally formed with the strip-shaped base, the drainage channels include several and are located on the water-facing surface of the strip-shaped base, and the water-blocking rib includes at least one and is located on the water-receiving surface of the strip-shaped base.
[0008] Optionally, there are three drainage channels, one of which is located in the middle of the strip-shaped base, and the remaining two drainage channels are arranged near both ends of the strip-shaped base.
[0009] Optionally, the drainage channel has a U-shaped structure and is recessed inward from the water-facing surface of the strip-shaped base.
[0010] Optionally, the water-blocking ribs include four ribs, two of which are located at both ends of the strip-shaped base, and the remaining two water-blocking ribs are located between adjacent drainage channels.
[0011] Optionally, the shape of the water-blocking rib is rectangular and / or trapezoidal.
[0012] Optionally, the strip-shaped base, the drainage channel and the water-blocking ribs are all made of thermoplastic elastomer.
[0013] In order to achieve the second of the above purposes, the utility model provides a seam drainage structure, including any of the above-mentioned drainage-type back-stick waterstops, and also including geotextiles, which are laid on the drainage channel of the back-stick waterstops.
[0014] Optionally, non-asphalt self-adhesive glue is further included, and the non-asphalt self-adhesive glue is arranged on the back-to-water surface of the back-stick waterstop.
[0015] The drainage type back-stick waterstop provided by the utility model has the following technical effects:
[0016] This type of drainage-type back-stick waterstop is mainly composed of a strip-shaped base, on which a drainage channel and water-blocking ribs are provided. The drainage channel and the water-blocking ribs are integrally formed with the strip-shaped base. The drainage channel is located on the water-facing side of the strip-shaped base, and the water-blocking ribs are located on the water-receiving side of the strip-shaped base. The waterstop of this utility model has an added drainage function on the basis of the original water-stopping function, which is used to drain seepage water and avoid excessive leakage of water. Water will flow along the contact surface between the waterstop and concrete, and eventually enter the construction joints and deformation joints, resulting in the defect that the water-stopping effect cannot be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 This is a structural diagram of Example 1 of the drainage-type back-stick waterstop of the utility model;
[0019] Figure 2 Contains Figure 1 A schematic structural diagram of Example 2 of the seam drainage structure of a medium-drainage back-attached waterstop;
[0020] Figure 3It is a structural schematic diagram of Example 3 of the drainage type back-stick waterstop of the present utility model.
[0021] in, Figure 1-Figure 3 :
[0022] 1. Primary support; 2. Waterproof sheet; 3. Strip base; 4. Geotextile; 5. Water-blocking ribs; 6. Drainage channel; 7. Non-asphalt self-adhesive adhesive; 8. Construction joint; 9. Secondary lining concrete. DETAILED DESCRIPTION
[0023] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0024] As described in the background technology, the waterstop in the existing technology can only isolate the leakage water in the rock layer to the outside of the construction joint and deformation joint, and only plays a water-stopping role. When the water pressure is too high and the leakage water is too much, the water will flow along the contact surface between the waterstop and the concrete, and eventually enter the construction joint and deformation joint, resulting in the inability to fully achieve the water-stopping effect.
[0025] Based on this, the utility model provides a drainage type back-stick waterstop. This type of waterstop has an added drainage function on the basis of the original waterstop function, which is used to drain seepage water and avoid excessive leakage of water. Water will flow along the contact surface between the waterstop and the concrete, and eventually enter the construction joints and deformation joints, resulting in the defect of being unable to achieve the waterstop effect.
[0026] The following is combined with specific Figure 1-3 The drainage-type back-stick waterstop and seam drainage structure of the utility model are described in detail with Examples 1-3.
[0027] This embodiment 1:
[0028] The drainage type back-sticking water stop provided in this embodiment is as follows: Figure 1 As shown, it is mainly composed of a strip-shaped base 3, on which there are drainage channels 6 and water-blocking ribs 5. The drainage channels 6 and water-blocking ribs 5 are integrally formed with the strip-shaped base 3. In this embodiment, the strip-shaped base 3, the drainage channels 6 and the water-blocking ribs 5 are all made of thermoplastic elastomer.
[0029] In the prior art, during the installation of waterstops, due to the relatively soft material of rubber waterstops, a mold is required to fix the waterstops before installation to ensure that the waterstops are in a horizontal position. This not only increases the construction process, construction time, and construction costs, but also leads to inaccurate positioning errors. It is also easy for the waterstops to be installed incorrectly, failing to fully achieve their water-stopping function.
[0030] To this end, this embodiment uses thermoplastic elastomer (TPE), a material with a higher hardness than rubber. When the waterstop is placed horizontally, its high lateral stiffness prevents one end from being fixed while the other sags. This eliminates the need for additional molds to secure the waterstop, reduces construction steps and time, reduces costs, and fundamentally eliminates the risk of improper installation.
[0031] TPE is a polymer material that exhibits rubber elasticity at room temperature and can be plasticized and molded at high temperatures. It has the characteristics of high elasticity, high strength, and high resilience of rubber, and has excellent processing performance. It does not require vulcanization, is environmentally friendly and energy-saving, and is non-toxic and safe.
[0032] The enhanced drainage back-attached waterstop in this embodiment uses a styrene-based TPE, primarily composed of PP (polypropylene polymer) and SEBS. SEBS contains no unsaturated double bonds, resulting in higher strength, better stability, and aging resistance. During construction, especially during concrete pouring and vibration, the TPE-enhanced drainage waterstop maintains a horizontal position without external support, ensuring uncompromised waterproofing.
[0033] Continue to see Figure 1 As shown, the drainage channels 6 of this embodiment include three, all of which are located on the water-facing surface of the strip base 3. The specific drainage channels 6 are U-shaped and are recessed inward from the water-facing surface of the strip base 3. One of the drainage channels 6 is located in the middle of the strip base 3, and the remaining two drainage channels 6 are arranged near the two ends of the strip base 3.
[0034] The three drainage channels 6 of this embodiment are used to drain seepage water.
[0035] Continue to see Figure 1 As shown, the present embodiment includes four water-blocking ribs 5 located on the back water surface of the strip-shaped base 3 , wherein two water-blocking ribs 5 are located at both ends of the strip-shaped base 3 , and the remaining two water-blocking ribs 5 are located between adjacent drainage channels 6 .
[0036] The water-blocking rib 5 of this embodiment is rectangular and has a trapezoidal support end at the end. The water-blocking rib 5 is used to be embedded in the concrete to prevent water from bypassing the deep part of the waterstop. That is, the use of the water-blocking rib 5 can increase the path of water seepage on the waterstop, thereby achieving the purpose of waterproofing.
[0037] Example 2:
[0038] The drainage type back-sticking water stop provided in this embodiment is as follows: Figure 2 As shown, it is mainly composed of a strip-shaped base 3, on which there are drainage channels 6 and water-blocking ribs 5. The drainage channels 6 and water-blocking ribs 5 are integrally formed with the strip-shaped base 3. In this embodiment, the strip-shaped base 3, the drainage channels 6 and the water-blocking ribs 5 are all made of thermoplastic elastomer.
[0039] In the prior art, during the installation of waterstops, due to the relatively soft material of rubber waterstops, a mold is required to fix the waterstops before installation to ensure that the waterstops are in a horizontal position. This not only increases the construction process, construction time, and construction costs, but also leads to inaccurate positioning errors. It is also easy for the waterstops to be installed incorrectly, failing to fully achieve their water-stopping function.
[0040] To this end, this embodiment uses thermoplastic elastomer (TPE), a material with a higher hardness than rubber. When the waterstop is placed horizontally, its high lateral stiffness prevents one end from being fixed while the other sags. This eliminates the need for additional molds to secure the waterstop, reduces construction steps and time, reduces costs, and fundamentally eliminates the risk of improper installation.
[0041] TPE is a polymer material that exhibits rubber elasticity at room temperature and can be plasticized and molded at high temperatures. It has the characteristics of high elasticity, high strength, and high resilience of rubber, and has excellent processing performance. It does not require vulcanization, is environmentally friendly and energy-saving, and is non-toxic and safe.
[0042] The enhanced drainage back-attached waterstop in this embodiment uses a styrene-based TPE, primarily composed of PP (polypropylene polymer) and SEBS. SEBS contains no unsaturated double bonds, resulting in higher strength, better stability, and aging resistance. During construction, especially during concrete pouring and vibration, the TPE-enhanced drainage waterstop maintains a horizontal position without external support, ensuring uncompromised waterproofing.
[0043] Continue to see Figure 2 As shown, the drainage channels 6 of this embodiment include three, all of which are located on the water-facing surface of the strip base 3. The specific drainage channels 6 are U-shaped and are recessed inward from the water-facing surface of the strip base 3. One of the drainage channels 6 is located in the middle of the strip base 3, and the remaining two drainage channels 6 are arranged near the two ends of the strip base 3.
[0044] The three drainage channels 6 of this embodiment are used to drain seepage water.
[0045] Continue to see Figure 2As shown, the present embodiment includes four water-blocking ribs 5 located on the back water surface of the strip-shaped base 3 , wherein two water-blocking ribs 5 are located at both ends of the strip-shaped base 3 , and the remaining two water-blocking ribs 5 are located between adjacent drainage channels 6 .
[0046] The water-blocking ribs 5 of this embodiment are trapezoidal and are used to be embedded in concrete to prevent water seepage from bypassing the deep part of the waterstop. That is, the use of the water-blocking ribs 5 can increase the path of water seepage on the waterstop, thereby achieving the purpose of waterproofing.
[0047] Example 3:
[0048] This embodiment provides a seam anti-drainage structure, which includes the drainage type back-sticking waterstop of embodiment 1 or embodiment 2.
[0049] like Figure 3 The figure shows a schematic structural diagram of a seam drainage structure containing a drainage-type back-sticking waterstop of Example 1.
[0050] The seam drainage structure of this embodiment includes the drainage-type back-stick waterstop of Example 1, and also includes geotextile 4 and non-asphalt self-adhesive glue 7. A layer of geotextile 4 is laid on each of the three drainage channels 6 to prevent mud and cement slurry from entering the drainage channels 6. Non-asphalt self-adhesive glue 7 is added to the back surface of the waterstop to enhance the bonding performance between the waterstop and concrete and increase the anti-seepage performance of the waterstop.
[0051] Continue to see Figure 3 As shown, it is a diagram of the usage status of the seam drainage structure. There is a construction joint 8 between the secondary lining concrete 9, and a drainage type back-stick waterstop is placed on the construction joint 8. One of the drainage channels 6 is installed in the construction joint 8. A waterproof board 2 is installed on the water-facing surface of the drainage type back-stick waterstop, and an initial support 1 is placed on the waterproof board 2.
[0052] This embodiment sets three drainage channels 6 in the middle and at both ends of the water-facing surface of the waterstop, and lays a layer of geotextile 4 on the three drainage channels 6. Water that passes through the waterproof board 2 will flow into the drainage channel 6 along the direction of the geotextile 4, and when the amount of water in the drainage channel 6 is too much, the water pressure will make the waterstop and the concrete fit more tightly, and the remaining water that has not entered the drainage channel 6 cannot pass through the waterstop and flow into the construction joint 8. The end of the drainage channel 6 is connected to the drainage system of the tunnel arch foot, so that the water in the waterstop drainage channel 6 can be discharged into the drain pipe in time.
[0053] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely for the convenience of describing the present invention and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0054] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.
[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.
Claims
1. A drainage type back-stick waterstop, characterized in that: The strip-shaped base comprises a strip-shaped base, on which a drainage channel and a water-blocking rib are provided. The drainage channel and the water-blocking rib are integrally formed with the strip-shaped base. The drainage channels include a plurality of channels and are located on the water-facing surface of the strip-shaped base. The water-blocking rib includes at least one channel and is located on the water-receiving surface of the strip-shaped base. The strip-shaped base, the drainage channel and the water-blocking ribs are all made of thermoplastic elastomer.
2. The drainage type back-stick waterstop according to claim 1, characterized in that: There are three drainage channels, one of which is located in the middle of the strip-shaped base, and the remaining two drainage channels are arranged near both ends of the strip-shaped base.
3. The drainage type back-stick waterstop according to claim 2, characterized in that: The drainage channel is in a U-shaped structure and is recessed inward from the water-facing surface of the strip-shaped base.
4. The drainage type back-stick waterstop according to claim 2, characterized in that: The water-blocking ribs include four ribs, two of which are located at both ends of the strip-shaped base, and the remaining two ribs are located between adjacent drainage channels.
5. The drainage type back-stick waterstop according to claim 4, characterized in that: The shape of the water-blocking ribs is rectangular and / or trapezoidal.
6. A seam drainage structure, characterized in that: It comprises the drainage type back-attached waterstop as described in any one of claims 1-5, and also comprises a geotextile, and the geotextile is laid on the drainage channel of the back-attached waterstop.
7. The seam drainage structure according to claim 6, characterized in that: It also includes non-asphalt self-adhesive glue, which is arranged on the back-to-water surface of the back-stick waterstop.