Installation structure of waterproofing membrane for tunnel

Abstract

The utility model relates to a tunnel waterproofing technical field, concretely relates to a kind of installation structure of waterproofing membrane for tunnel.The utility model is provided with several connecting pieces of same material on waterproofing membrane, one end of connecting piece is integrally connected with waterproofing membrane, and the other end is movably arranged relative to waterproofing membrane, so that its movable end is used to install shot pin and gasket, waterproofing base and connecting piece are connected by shot pin and gasket during installation, so as to realize the fixation of waterproofing membrane.In this way, after fixing waterproofing membrane, the fixed and installed shot pin and gasket can be hidden in the back of waterproofing membrane, to avoid the perforation of waterproofing membrane, so as to ensure the integrity and sealing waterproofness of waterproof layer, improve the durability of waterproof layer, and the appearance is beautiful, neat.At this time, the installed gasket can adopt other various specifications, so as to match the shot pin specification and waterproofing membrane thickness, realize firm fixation, and the selection of gasket is more flexible, which is beneficial to avoid the series problems caused by the lack of special gasket.

Description

Technical Field

[0001] This utility model relates to the field of waterproofing technology for tunnel engineering, and in particular to an installation structure for waterproof membrane for tunnels. Background Technology

[0002] With the increasing variety and number of subway tunnels constructed using the cut-and-cover method, the requirements for waterproofing in these tunnels are becoming increasingly stringent. The traditional approach to waterproofing cut-and-cover tunnels involves laying a geotextile buffer layer after the initial support construction, followed by a waterproof layer, and then constructing the secondary lining. In tunnel engineering, PVC waterproof membranes are widely used due to their high mechanical strength, puncture resistance, moderate cost-effectiveness, and suitability for complex structures. Since most PVC waterproof membranes lack self-adhesive properties, their installation typically employs a mechanical fixing method. This involves placing specialized PVC gaskets at the fixing points, anchoring screws through the membrane into the base layer, ensuring the screw heads are tightly fitted to the gaskets, and finally using a welding torch to hot-air weld the gaskets to the PVC waterproof membrane, forming a waterproof closed loop to prevent leaks.

[0003] However, in practical applications, due to the lack of standardization in the specifications and models of PVC gaskets on the market, or the incomplete range of suppliers, it is difficult to find PVC gaskets that perfectly match the screws and membrane during construction. This results in unstable fixing and affects the sealing and durability of the waterproof layer. In the absence of dedicated gaskets, construction workers often use ordinary screws for fixing, causing the screw heads to be exposed on the surface of the membrane. This not only damages the integrity of the waterproof layer but also increases the risk of leakage due to corrosion of exposed metal parts or thermal expansion and contraction causing perforation of the membrane.

[0004] Therefore, there is an urgent need for an installation structure for waterproof membranes used in tunnels to solve problems such as exposed screws, insecure fixing, and poor aesthetics caused by missing gaskets in existing technologies, thereby improving the construction quality and efficiency of PVC waterproof membranes. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology in fixing PVC waterproof membrane, such as exposed screws, insecure fixing, and poor aesthetics due to the lack of special gaskets, and to provide an installation structure for waterproof membrane for tunnels.

[0006] In a first aspect, the present invention provides an installation structure for a waterproof membrane for tunnels, comprising a waterproof membrane, wherein a plurality of connecting pieces are provided on the surface of the waterproof membrane, the connecting pieces being made of the same material as the waterproof membrane, one end of the connecting piece being integrally connected to the waterproof membrane, and the other end of the connecting piece being movably disposed relative to the waterproof membrane, the movable end of the connecting piece being used to install a first nail and a first washer.

[0007] Preferably, the first gasket is a metal or plastic component. The first gasket can be made of the same material as the waterproof membrane, or it can be made of a different material.

[0008] Preferably, the connecting piece is heat-fused to the waterproof membrane. Since the connecting piece and the waterproof membrane are made of the same material, they can be connected by hot air welding during installation, allowing one end of the connecting piece to be integrally connected to the waterproof membrane, making the operation simple and convenient.

[0009] Preferably, the waterproof membrane is made of PVC.

[0010] Preferably, the spacing between the connecting pieces is 40-50cm.

[0011] Preferably, the planar shape of the connecting piece is rectangular.

[0012] Preferably, the connecting pieces are arranged in a staggered, plum blossom pattern.

[0013] Preferably, the present invention further includes geotextile, which is laid on the waterproof base layer, and the connecting piece is fixedly connected to the geotextile and the waterproof base layer by the first nail.

[0014] Preferably, the connecting piece is placed vertically on the geotextile, and the movable end of the connecting piece is positioned below the fixed end.

[0015] Preferably, the waterproof membrane is provided in several pieces, with adjacent pieces of the waterproof membrane overlapping and fixed by heat fusion.

[0016] Preferably, the overlap width of two adjacent waterproof membrane rolls is at least 15cm.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model provides an installation structure for a waterproof membrane for tunnels. Several connecting pieces of the same material are installed on the waterproof membrane. One end of each connecting piece is integrally connected to the waterproof membrane, while the other end is movably positioned relative to the membrane. This movable end is used to install a first nail and a first washer. During installation, the first nail and the first washer connect the waterproof base layer and the connecting pieces, thereby fixing the waterproof membrane. After fixing the waterproof membrane, the installed first nail and first washer can be hidden behind the membrane, preventing perforation and ensuring the integrity and sealing of the waterproof layer, improving its durability, and resulting in a neat and aesthetically pleasing appearance. The first washer can be of various specifications to match the specifications of the first nail and the thickness of the waterproof membrane, ensuring a secure fixation. It is not limited to using a washer of the same material as the waterproof membrane, allowing for more flexible washer selection and avoiding problems caused by a lack of dedicated washer materials. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the installation structure of a waterproof membrane for tunnels in one embodiment;

[0020] Figure 2 A side view of the installation structure for waterproof membrane used in tunnels;

[0021] Figure 3 This is a schematic diagram of the installation structure for waterproof membrane used in tunnels.

[0022] Figure 4 A schematic diagram illustrating the construction process for installing waterproof membrane.

[0023] The markings in the diagram are: 1-waterproof membrane; 2-connecting piece; 3-geotextile; 4-waterproof base layer; 5-first nail; 6-first washer; 7-second nail; 8-second washer. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0025] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0027] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0028] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0029] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0030] Example

[0031] like Figures 1-3 As shown, an installation structure for a waterproof membrane for tunnels includes a waterproof membrane 1. Several connecting pieces 2 are provided on the surface of the waterproof membrane 1. The connecting pieces 2 are made of the same material as the waterproof membrane 1. One end of the connecting piece 2 is integrally connected to the waterproof membrane 1, and the other end of the connecting piece 2 is movably disposed. The movable end of the connecting piece 2 is used to install a first nail 5 and a first washer 6.

[0032] In this solution, several connecting pieces 2 of the same material are installed on the waterproof membrane 1. One end of the connecting piece 2 is integrally connected to the waterproof membrane 1, while the other end is movably set relative to the waterproof membrane 1. This movable end is used to install the first nail 5 and the first washer 6. During installation, the first nail 5 and the first washer 6 connect the waterproof base layer 4 and the connecting piece 2, thereby fixing the waterproof membrane 1. After fixing the waterproof membrane 1, the fixed first nail 5 and the first washer 6 can be hidden on the back of the waterproof membrane 1, preventing perforation of the waterproof membrane 1, thus ensuring the integrity and sealing of the waterproof layer, improving its durability, and resulting in a beautiful and neat appearance. The first washer 6 can be of various other specifications to match the specifications of the first nail 5 and the thickness of the waterproof membrane 1, ensuring a secure fixation. It is not limited to using a washer of the same material as the waterproof membrane 1, allowing for more flexible washer selection and avoiding a series of problems caused by a lack of dedicated washer materials.

[0033] In an optional embodiment, the connecting piece 2 in the above-mentioned installation structure can be made from waste materials cut from the waterproof membrane 1. One end of the connecting piece 2 is then heat-fused to the waterproof membrane 1 using a welding gun. This method is simple, convenient, and low-cost. Although the structure is simple, it effectively solves the problem of missing or mismatched special gaskets, improving construction efficiency and ensuring construction quality. Preferably, the connecting piece 2 has a rectangular planar shape; several connecting pieces are provided, arranged in rows (or columns), with adjacent rows (or columns) of connecting pieces 2 staggered in a quincunx pattern, with a spacing of 40-50cm.

[0034] In an optional embodiment, the waterproof membrane 1 is made of PVC material.

[0035] In an alternative embodiment, the first gasket 6 may be made of metal or plastic.

[0036] Furthermore, such as Figure 3 , Figure 4 As shown, the above installation structure also includes geotextile 3, which is laid on the waterproof base layer 4. The connecting piece 2 is fixedly connected to the geotextile 3 and the waterproof base layer 4 by the first nail 5. Concrete base layers may have sharp protrusions, cracks, or burrs. Directly laying the waterproof membrane 1 may cause damage to the membrane due to friction or compression. By first laying a layer of geotextile 3 on the waterproof base layer 4 as a flexible buffer layer, uneven areas of the base layer can be isolated, preventing the waterproof layer from being punctured or scratched.

[0037] In an optional embodiment, the geotextile 3 can be fixed to the waterproof base layer 4 using a second pad 8 and a second nail 7, or by using cement nails. The second nail 7 or cement nails are fixed in a staggered pattern at intervals of about 1-2m to prevent the geotextile 3 from shifting. The nail heads must be lower than the surface of the waterproof base layer 4 to prevent puncturing the subsequent waterproof layer. The second pad 8 can be made of the same material as the PVC waterproof membrane 1 or a different material. The second pad 8 and the first pad 6 are preferably made of the same material for ease of use and storage.

[0038] As another possible implementation method, an adhesive (such as water-based asphalt adhesive) can be sprayed onto the flat base layer to adhere and compact the geotextile 3; or it can be pre-fixed with hot melt pads first, and then reinforced as a whole after the waterproof membrane 1 is laid.

[0039] In an optional implementation, during installation, it is preferable to place the connecting piece 2 vertically on the geotextile 3, with the movable end of the connecting piece 2 positioned below the fixed end. This facilitates the installation of the waterproof membrane 1 from top to bottom, making the installation convenient.

[0040] like Figure 3 , Figure 4 As shown, during installation, the geotextile 3 is first laid on the waterproof base layer 4 using the second nail 7 and the second washer 8, and then the waterproof membrane 1 is laid on the geotextile 3. When laying the waterproof membrane 1, the waterproof membrane 1 of the current segment is temporarily fixed at the top, and then slowly unfolded from top to bottom. At this time, the connecting piece 2 is between the waterproof membrane 1 and the geotextile 3. The connecting piece 2 is placed vertically on the geotextile 3 and hangs naturally. As the waterproof membrane 1 unfolds downward, the first washer 6 is placed at the lower end of each row of connecting pieces 2 that can be opened, and the first nail 5 is driven in through the first washer 6, so that the first nail 5 passes through the connecting piece 2 and the geotextile 3 in sequence and is anchored into the waterproof base layer 4 until the laying and fixing of the waterproof membrane 1 of the current segment is completed. Then, proceed from bottom to top to complete the laying of the next section of waterproof membrane 1, and lay it horizontally in sequence; two adjacent pieces of waterproof membrane 1 are overlapped and fixed by heat fusion, and the overlap area of ​​two adjacent pieces of waterproof membrane 1 is reserved at least 15cm.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An installation structure for a waterproof membrane for tunnels, characterized in that, The waterproof membrane (1) includes a number of connecting pieces (2) on its surface. The connecting pieces (2) are made of the same material as the waterproof membrane (1). One end of the connecting piece (2) is integrally connected to the waterproof membrane (1), and the other end of the connecting piece (2) is movably disposed relative to the waterproof membrane (1). The movable end of the connecting piece (2) is used to install the first nail (5) and the first washer (6).

2. A waterproofing membrane installation structure for a tunnel according to claim 1, characterized by The first gasket (6) is a metal or plastic component.

3. The waterproofing membrane installation structure for a tunnel according to claim 1, wherein The connecting piece (2) is heat-fused to the waterproof membrane (1).

4. The waterproofing membrane installation structure for a tunnel according to claim 1, wherein The waterproof membrane (1) is made of PVC.

5. The waterproofing membrane installation structure for a tunnel according to claim 1, wherein The spacing between the connecting pieces (2) is 40-50cm.

6. The waterproofing membrane installation structure for a tunnel according to claim 1, wherein The planar shape of the connecting piece (2) is rectangular.

7. The waterproofing membrane installation structure for a tunnel according to claim 1, wherein The connecting pieces (2) are arranged in a staggered, plum blossom pattern.

8. The installation structure of a waterproof membrane for tunnels according to any one of claims 1-7, characterized in that, It also includes geotextile (3), which is laid on the waterproof base layer (4), and the connecting piece (2) is fixedly connected to the geotextile (3) and the waterproof base layer (4) through the first nail (5).

9. The waterproofing membrane installation structure for a tunnel according to claim 8, wherein The connecting piece (2) is placed vertically on the geotextile (3), and the movable end of the connecting piece (2) is located below the fixed end.

10. A waterproofing membrane installation structure for a tunnel according to any one of claims 1 to 7, characterized in that, The number of waterproof membrane (1) is set to several pieces, and two adjacent pieces of waterproof membrane (1) are overlapped and fixed by heat fusion.

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