Waterproof structure for pipe gallery joint and pipe gallery system

Abstract

The utility model relates to the technical field of sealing waterproof, specifically relates to a waterproof structure and pipe gallery system for pipe gallery joint, and the waterproof structure includes first sealing strip and second sealing strip, and first sealing strip and second sealing strip are filled in the joint between pipe gallery, and first sealing strip and second sealing strip all extend to the other end of joint from the length direction of joint of one end of joint, and the sealing cavity is formed between first sealing strip and second sealing strip, and the grouting pipe is equipped in the sealing cavity, and the cut -out is set up on the grouting pipe. The sealing paste can enter the sealing cavity by the cut -out of grouting pipe and realize sealing, and if the filled solidified sealing serum appears crack or is caused sealing failure by erosion, still can continue to inject new sealing serum for grouting through grouting pipe to carry out grouting, to the repair of sealing structure, and then can promote the service life of sealing structure and long -term maintenance its sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of sealing and waterproofing technology, and in particular to a waterproof structure and pipe gallery system for pipe gallery joints. Background Technology

[0002] In the design of some cross-sea bridges, pedestrian walkways are located on both sides of the roadway, while utility tunnels are erected between the pedestrian walkways and the roadway for laying equipment such as optical fibers and cables. The structure of the utility tunnel is generally similar to a U-shaped trough. After the optical fibers, cables, and other equipment are laid in the trough, the opening is sealed with a cover plate. The direction of the utility tunnel is usually consistent with the length of the bridge. For typical cross-sea bridges, its length typically ranges from several kilometers to tens of kilometers, and the total length of the utility tunnel in the bridge structure is also basically consistent with the bridge length. To achieve a long-distance utility tunnel that matches the bridge length, multiple segments of the utility tunnel structure are connected end-to-end in the design and construction to meet the overall design dimensions of the utility tunnel. However, due to practical factors in some engineering projects, the bottom height of some cross-sea bridges is relatively low, only... In areas where the bridge is several meters to tens of meters above sea level, and where the tidal range is large, the bridge deck may be submerged at high tide. Seawater can also enter the bridge's beam structure and reach the outside of the utility tunnel. To prevent seawater from seeping into the tunnel through the joints between the multiple tunnel sections and damaging electrical components such as optical fibers and cables, the joints between the tunnel sections need to be sealed. Existing sealing structures and methods can meet the sealing requirements in the short term, but for bridges designed for a service life of several decades or even hundreds of years, the existing sealing structures will still fail after long-term use due to seawater erosion and material aging. Therefore, it is urgent to improve and optimize the existing sealing structures to enhance the sealing effect and service life. Utility Model Content

[0003] The purpose of this invention is to overcome the technical problem that the existing sealing structure has a short sealing life and cannot maintain a long-term effective seal for pipe corridors in bridges, and to provide a waterproof structure and pipe corridor system for pipe corridor joints.

[0004] In a first aspect, this utility model provides a waterproof structure for pipe gallery joints, including a first sealing strip and a second sealing strip. The first sealing strip and the second sealing strip are both filled in the joint between two adjacent pipe gallery sections. The first sealing strip and the second sealing strip extend from one end of the joint along the length direction of the joint to the other end of the joint. The first sealing strip and the second sealing strip are spaced apart from each other along the width direction of the joint, and a sealing cavity is formed between the first sealing strip and the second sealing strip. A grouting pipe is provided in the sealing cavity. The grouting pipe passes through the sealing cavity along the length direction of the joint. The grouting pipe is spaced apart from the first sealing strip and / or the second sealing strip. The grouting pipe has several cuts that allow the grouting pipe to communicate with the sealing cavity.

[0005] This invention utilizes two sealing strips (i.e., the first and second sealing strips) and the two pipe gallery body structures to jointly construct a sealed space (i.e., a sealed cavity) in the joint between two pipe gallery sections. A grouting pipe is installed in the sealed cavity, penetrating the entire cavity and protruding at both ends outside the joint. One end of the grouting pipe can be injected into the pipe at a preset pressure. The grout can be a single-component grout such as polyacrylic acid resin, or a dual-component grout such as A and B components of an acrylic grouting material that undergoes a cross-linking reaction and solidifies sequentially. The grouting pipe can be made of elastic materials such as rubber. Sufficient pressure in the grouting pipe is required to grout the pipe. The incision is widened to allow the grout to flow into the sealing cavity, gradually filling it. After a period of time, the grout in the sealing cavity solidifies on its own and provides a sealing effect. After grouting, any grout remaining in the grouting pipe needs to be removed by introducing a medium such as gas or water at a certain pressure before it solidifies. This is to prevent the grout remaining in the grouting pipe from blocking it after solidification. In this way, if the solidified sealing grout subsequently cracks or is corroded, causing the seal to fail, new sealing grout can be injected through the grouting pipe to repair the sealing structure, thereby extending the service life of the sealing structure and maintaining its sealing performance for a long time.

[0006] Preferably, it further includes a sealing grout that fills the sealing cavity between the grouting pipe and the first sealing strip and / or the second sealing strip.

[0007] Preferably, the sealant comprises polyacrylic acid resin.

[0008] Preferably, it further includes a first sealant, which is applied to the other side of the first and second sealing strips opposite to the sealing cavity, and the first sealant is flush with the edge of the joint.

[0009] Preferably, it further includes a second sealant, which seals the openings at both ends of the sealing cavity and the openings at both ends of the grouting pipe.

[0010] Preferably, the plurality of cuts are spaced apart along the length of the grouting pipe, or the plurality of cuts are arranged in a quincunx pattern on the wall of the grouting pipe.

[0011] Preferably, the joint includes a side plate joint and a bottom plate joint, the side plate joint being formed between the side plates of two adjacent pipe rack sections, and the bottom plate joint being formed between the bottom plates of two adjacent pipe rack sections; a plurality of the cuts are made on the grouting pipe located in the bottom plate joint; the openings of the cuts on the grouting pipe in the bottom plate joint face upward.

[0012] Preferably, the first sealing strip in the bottom plate seam is located above the second sealing strip; the distance between the grouting pipe in the bottom plate seam and the first sealing strip in the bottom plate seam is h1, and the distance between the grouting pipe in the bottom plate seam and the second sealing strip in the bottom plate seam is h2, where h1 = h2 × (1 / 4 ~ 1 / 5).

[0013] Preferably, a plurality of brackets are supported below the grouting pipe in the base plate joint, and the brackets are connected between the base plates on both sides.

[0014] In a second aspect, the present invention provides a pipe gallery system, comprising several pipe gallery sections and a waterproof structure for the pipe gallery joints as described above, wherein the waterproof structure seals the joint between any two adjacent pipe gallery sections.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a waterproof structure and pipe gallery system for pipe gallery joints. It constructs a sealed space (i.e., a sealed cavity) between two pipe gallery sections using two sealing strips (a first sealing strip and a second sealing strip) and the two pipe gallery body structures. A grouting pipe is installed within the sealed cavity, penetrating the entire space and protruding at both ends outside the joint. One end of the grouting pipe can be injected with sealing grout at a preset pressure. The sealing grout can be a single-component grout such as polyacrylic acid resin, or a dual-component grout such as A and B components of an acrylic grouting material that undergoes a cross-linking reaction and solidifies sequentially. The grouting pipe can be made of elastic materials such as rubber. Only when the grout in the grouting pipe has sufficient... Sufficient pressure is needed to open the cut on the grouting pipe, allowing the grout to flow into the sealing cavity and gradually fill it. After a period of time, the grout in the sealing cavity will solidify on its own and achieve a sealing effect. After grouting, any grout remaining in the grouting pipe needs to be removed by introducing a medium such as gas or water at a certain pressure before it solidifies. This is to prevent the grout remaining in the grouting pipe from blocking it after solidification. In this way, if the solidified sealing grout cracks or is corroded, causing the seal to fail, new sealing grout can be injected through the grouting pipe to repair the sealing structure, thereby extending the service life of the sealing structure and maintaining its sealing performance for a long time. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the pipe gallery system of this utility model.

[0017] Figure 2 for Figure 1 A top-down view.

[0018] Figure 3 for Figure 1 A schematic diagram of the cross-section at "AA".

[0019] Figure 4 for Figure 3 A magnified view of a portion of point D.

[0020] Figure 5 for Figure 3 A magnified view of a portion of point E in the middle.

[0021] Figure 6 for Figure 5 A cross-sectional diagram at the "BB" mark.

[0022] Figure 7 for Figure 5 A cross-sectional diagram at the "CC" mark.

[0023] Figure 8 This is a schematic diagram of the grouting pipe structure.

[0024] Figure 9 This is a schematic diagram showing the layout of the cuts after the grouting pipe wall is unfolded into a plane.

[0025] Marked in the image: 1. Pipe gallery; 11. Side plate; 12. Bottom plate; 13. Side plate seam; 14. Bottom plate seam; 2. Waterproof structure; 3. First sealing strip; 4. Second sealing strip; 5. Sealing cavity; 6. Grouting pipe; 61. Cut; 7. First sealant; 8. Second sealant; 9. Bracket. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Example 1 This embodiment provides a waterproof structure for pipe gallery joints.

[0033] like Figures 1 to 9 As shown, the waterproof structure for pipe gallery joints in this embodiment includes a first sealing strip 3 and a second sealing strip 4. Both the first sealing strip 3 and the second sealing strip 4 fill the joint between two adjacent pipe gallery sections 1. Both the first sealing strip 3 and the second sealing strip 4 extend from one end of the joint along the length of the joint to the other end of the joint. The first sealing strip 3 and the second sealing strip 4 are spaced apart from each other along the width of the joint, and a sealing cavity 5 is formed between the first sealing strip 3 and the second sealing strip 4. A grouting pipe 6 is provided in the sealing cavity 5. The grouting pipe 6 penetrates the sealing cavity 5 along the length of the joint. The grouting pipe 6 is spaced apart from the first sealing strip 3 and / or the second sealing strip 4. That is, the grouting pipe 6 can be attached to one of the first sealing strip 3 and the second sealing strip 4 and spaced apart from the other of the first sealing strip 3 and the second sealing strip 4, or it can be spaced apart from both the first sealing strip 3 and the second sealing strip 4 at the same time. That is, the grouting pipe 6 shown in the figure is located in the middle of the sealing cavity 5. Multiple cuts 61 are opened on the grouting pipe 6, and the cuts 61 can make the grouting pipe 6 communicate with the sealing cavity 5. Specifically, the extension direction of the first sealing strip 3 and the second sealing strip 4 can be as shown in the figure, that is, extending from top to bottom along the side plate seam 13 on one side of the pipe gallery 1, then extending horizontally through the bottom plate seam 14, and then extending from bottom to top through the side plate seam 13 on the other side of the pipe gallery 1.

[0034] This invention utilizes two sealing strips (i.e., the first sealing strip 3 and the second sealing strip 4) and the main structure of the two pipe racks 1 to jointly construct a sealed space (i.e., a sealed cavity 5) in the joint between the two pipe rack sections 1. A grouting pipe 6 is installed in the sealed cavity 5, penetrating the entire sealed cavity 5 with both ends exposed outside the joint. Sealing grout can be injected into the grouting pipe 6 at a preset pressure from one end. The sealing grout can be a single grout such as polyacrylic acid resin, or a dual grout material such as A and B liquids of an acrylic grouting material that can undergo cross-linking and solidification. The grouting pipe 6 can be made of elastic materials such as rubber. Sufficient pressure in the grouting pipe 6 is required to propel the grouting pipe. The cut 61 on the grout pipe 6 is opened to allow the grout to flow into the sealing cavity 5, gradually filling the sealing cavity 5. After a period of time, the grout in the sealing cavity 5 can solidify on its own and achieve a sealing effect. After the grouting is completed, the grout remaining in the grouting pipe 6 needs to be removed by introducing a medium such as gas or water at a certain pressure into the grouting pipe 6 before solidification, so as to avoid the grout remaining in the grouting pipe 6 from blocking the grouting pipe 6 after solidification. In this way, if the solidified sealing grout is cracked or corroded and causes the seal to fail, new sealing grout can be injected through the grouting pipe 6 to repair the sealing structure, thereby improving the service life of the sealing structure and maintaining its sealing performance for a long time.

[0035] The first sealing strip 3 and the second sealing strip 4 can be made of the same material, such as sealing rubber, foamed plastic material, etc. Of course, the first sealing strip 3 and the second sealing strip 4 can also be made of different materials. This utility model does not specifically limit the materials of the first sealing strip 3 and the second sealing strip 4.

[0036] In this embodiment, the waterproof structure 2 also includes a sealing grout, which fills the sealing cavity 5 between the grouting pipe 6 and the first sealing strip 3 and / or the second sealing strip 4. The attached figure shows the sealing cavity 5 without sealing grout. In the actual completed waterproof structure 2, the sealing cavity 5 should be filled with sealing grout, and the sealing grout in the grouting pipe 6 should be removed, that is, the grouting pipe 6 should remain hollow.

[0037] Alternatively, the sealing grout can include a single-component grout such as polyacrylic acid resin, or a two-component grout such as A and B components of an acrylic grouting material that can undergo cross-linking and solidification can be injected sequentially. If a single-component grout such as polyacrylic acid resin is chosen, a cleaning medium such as gas, water, or organic solvent (such as thinner) at a certain pressure needs to be introduced into the grouting pipe 6 after grouting to remove any remaining grout. Specifically, a pressure pump or similar device can be connected to one end of the grouting pipe 6, and air or water can be introduced to discharge any remaining grout from the other end of the grouting pipe 6. When it is observed that all the grout discharged from the other end of the grouting pipe 6 is cleaning medium with no residual sealing grout, it indicates that the grouting pipe 6 is clean. It should be noted that the pressure of the air or water introduced into the grouting pipe 6 during the cleaning process needs to be... The pressure should be less than just enough to open the cut 61 on the grouting pipe 6, so as to avoid the cut 61 being opened and to prevent air or water from entering the sealing cavity 5 and mixing with the sealing grout, thereby affecting the sealing effect of the sealing grout. If the sealing grout is selected as a dual-liquid material such as liquid A and liquid B of the acrylic grouting material, one of the liquids, such as liquid A, can be injected into the grouting pipe 6 first, so that liquid A enters the sealing cavity 5. After injecting liquid A, air needs to be introduced into the grouting pipe 6 to remove the liquid A remaining in the grouting pipe 6. After removing the liquid A in the grouting pipe 6, liquid B is injected into the grouting pipe 6. After liquid B enters the sealing cavity 5 through the cut 61, it can mix with the previously injected liquid A. After the two liquids mix, a cross-linking reaction can occur and solidify, which can seal the sealing cavity 5. After the liquid B is injected, air also needs to be introduced into the grouting pipe 6 to remove the liquid B remaining in the grouting pipe 6.

[0038] It should be noted that when injecting two grouts, both grouts should not be injected into the grouting pipe 6 at the same time. Also, one grout should not be injected if there are still residues of one grout in the grouting pipe 6 that have not been removed. Otherwise, the two grouts will react in the grouting pipe 6 and solidify in the pipe, making them difficult to remove.

[0039] When using dual-solution materials such as liquids A and B for grouting, in order to maximize the mixing uniformity of the two liquids in the sealing cavity 5, improve the cross-linking reaction effect, and thus ensure the sealing effect of the solidified material generated after the reaction, the principle of "small amount, multiple cycles" can be adopted for grouting. Specifically, a small amount of liquid A can be injected into the sealing cavity 5 first, followed by a small amount of liquid B. After waiting for sufficient time for the two to react fully, a small amount of liquid A and a small amount of liquid B can be injected in sequence until the solidified material generated by the final reaction completely fills the sealing cavity 5 (i.e., after observing the sealing material emerging from the opening of the sealing cavity). It should be noted that after each grouting, the cleaning step of the grouting pipe 6 needs to be repeated to avoid the two liquids mixing and reacting in the grouting pipe 6.

[0040] In this embodiment, the waterproof structure 2 also includes a first sealant 7, which is applied to the other side of the first sealing strip 3 and the second sealing strip 4 relative to the sealing cavity 5. The first sealant 7 is flush with the edge of the joint. Here, the first sealing strip 3 and the second sealing strip 4 are placed in the joint and are a certain distance away from the edge of the joint. Therefore, a space can be formed on the outside of the first sealing strip 3 and the second sealing strip 4. In order to further enhance the sealing performance, the first sealant 7 can be used to fill the space on the outside of the first sealing strip 3 and the second sealing strip 4 for sealing. The first sealant 7 can be selected from waterproof coatings or cement-based materials commonly used in the engineering field, which are paste-like and have a certain viscosity before solidification, so as to facilitate application during construction and solidify in time to form an effective seal.

[0041] In this embodiment, the waterproof structure 2 also includes a second sealant 8, which seals the openings at both ends of the sealing cavity 5 and the openings at both ends of the grouting pipe 6. The second sealant 8 can be applied to the upper edge of the side plate 11 of the pipe gallery 1 in the figure. The second sealant 8 can be the same material as the first sealant 7, or other suitable materials can be selected. The second sealant 8 needs to be applied after the sealing grout is injected and the grouting pipe 6 is cleaned. The second sealant 8 can seal the openings at both ends of the sealing cavity 5, i.e., the grouting pipe 6, and can be used as the final finishing treatment in the construction of the waterproof structure 2. The application of the second sealant 8 can be the last step in forming a fully enclosed structure for the waterproof structure 2. Before secondary grouting, the second sealant can be removed by grinding or cutting to expose the openings at both ends of the sealing cavity and the grouting pipe, and then secondary grouting can be performed. After secondary grouting, the second sealant can be reapplied for sealing.

[0042] Optionally, multiple cuts 61 are spaced apart along the length of the grouting pipe 6, or multiple cuts 61 are arranged in a quincunx pattern on the wall of the grouting pipe 6; the arrangement of the cuts 61 on the wall of the grouting pipe 6 can be a straight, spaced arrangement, or... Figure 9 The plum blossom-shaped arrangement shown can be used to reserve outlets for the sealing grout at multiple locations along the length of the pipe wall in a straight-line interval arrangement, while the plum blossom-shaped arrangement can form multiple injection directions for the sealing grout along the length and circumference of the grouting pipe 6. However, regardless of the arrangement method, the sealing grout can be injected into the sealing cavity 5 relatively evenly, and reserving multiple cuts 61 can also improve the grouting efficiency.

[0043] In this embodiment, the joint includes a side plate joint 13 and a bottom plate joint 14. The side plate joint 13 is formed between the side plates 11 of two adjacent pipe rack sections 1, and the bottom plate joint 14 is formed between the bottom plates 12 of two adjacent pipe rack sections 1. Multiple cuts 61 are made on the grouting pipes 6 located in the bottom plate joint 14. The openings of the cuts 61 on the grouting pipes 6 in the bottom plate joint 14 face upwards. Here, cuts 61 can be made on the grouting pipes 6 in both the bottom plate joint 14 and the side plate joint 13, or only on the grouting pipes 6 in the bottom plate joint 14. Since the sealing grout tends to deposit downwards in the sealing cavity 5... This makes the lower sealing grout denser. In other words, the sealing grout below the grouting pipe 6 in the base plate joint 14 is denser than the sealing grout above the grouting pipe 6. Therefore, the sealing grout below the grouting pipe 6 is more likely to solidify the outer wall of the grouting pipe 6 after solidification. If the cut 61 is opened at the lower part of the grouting pipe 6, it will be difficult to open the cut 61 during secondary grouting, resulting in an unsatisfactory grouting effect. Therefore, opening the cut 61 on the grouting pipe 6 in the base plate joint 14 at the upper part of the grouting pipe 6 is more conducive to opening the cut 61 during secondary grouting to achieve grouting. However, no matter where the cut 61 is opened on the grouting pipe 6, the grouting pressure required for subsequent secondary grouting or even multiple grouting (i.e., the pressure required to open the cut 61) will always be higher than the initial grouting pressure.

[0044] In this embodiment, the first sealing strip 3 in the bottom plate seam 14 is located above the second sealing strip 4; the distance between the grouting pipe 6 in the bottom plate seam 14 and the first sealing strip 3 in the bottom plate seam 14 is h1, and the distance between the grouting pipe 6 in the bottom plate seam 14 and the second sealing strip 4 in the bottom plate seam 14 is h2, h1=h2×(1 / 4~1 / 5); here, h1 can be selected as 1 / 4~1 / 5 of h2, that is, when installing the grouting pipe 6, the grouting pipe 6 in the bottom plate seam 14 can be as close as possible to the first sealing strip 3 above the sealing cavity 5 of the bottom plate seam 14. When the sealing cavity 5 of the bottom plate seam 14 is filled with sealing grout, the thickness of the sealing grout above the grouting pipe 6 can be reduced as much as possible, that is, the thickness of the sealing grout covering the cut 61 above the grouting pipe 6 can be reduced as much as possible. This can reduce the degree of consolidation of the pipe wall at the cut 61 after the sealing grout solidifies, thereby reducing the pressure required to open the cut 61 during secondary grouting, making secondary grouting easier to achieve.

[0045] In this embodiment, multiple brackets 9 support the grouting pipe 6 in the base plate joint 14. The brackets 9 are connected between the base plates 12 on both sides. The brackets 9 can be pre-embedded between the base plates 12 on both sides before the grouting pipe 6 is installed. The inner diameter of the arc-shaped section of the bracket 9 matches the outer diameter of the grouting pipe 6. Connecting wing plates are integrally formed on both sides of the arc-shaped section of the bracket 9. The connecting wing plates can be fixedly connected to the base plates 12 on both sides by adhesive or screw connection. The height of the bracket 9 in the base plate joint 14 determines the height of the grouting pipe 6 in the base plate joint 14. Therefore, the installation height of the grouting pipe 6 in the base plate joint 14 needs to be determined before construction. When installing the brackets 9, they can be installed according to the design height of the grouting pipe 6. The brackets 9 can keep the grouting pipe 6 in the base plate joint 14 basically horizontal, avoiding the grouting pipe 6 in the base plate joint 14 from presenting a concave posture due to gravity before grouting.

[0046] It should be noted that, Figure 7 It can also be understood as Figure 5 The top-down perspective view hides the first sealing strip 3 and the first sealing material 7 above the grouting pipe 6.

[0047] In this embodiment, when cracks or gaps appear at the joints of pipe gallery 1, secondary grouting or re-grouting is required. The method is as follows: Remove the second sealant 8, specifically by grinding or cutting, to expose the openings at both ends of the sealing cavity 5 and the grouting pipe 6. That is, open the two ends of the grouting pipe 6 to form openings. Repeat the same method as the first grouting to perform secondary grouting or re-grouting. After completing the secondary grouting or re-grouting, use the second sealant 8 to seal the openings at both ends of the grouting pipe 6.

[0048] After the tide recedes, maintenance personnel can enter the pipe gallery 1 to check for leaks. If leaks are found, it indicates that defects such as cracks or gaps in the sealing structure have caused the seal to fail. Further, maintenance personnel can use non-destructive testing equipment to locate the gaps and holes in the sealing structure, thus determining the location of the pipe gallery where the sealing structure that needs repair is located. Next, secondary grouting is performed using the hollow grouting pipe 6. The method for secondary grouting is basically the same as the initial grouting, starting by opening one end of the grouting pipe 6 to a depth lower than the expansion cut 61. The sealing grout is injected under pressure. When grout emerges from the opening at the other end of the grouting pipe 6, the opening at the other end of the grouting pipe 6 is temporarily sealed. Then, the grouting pressure is increased to expand the cut 61, allowing the grout to flow into the cracks and gaps in the sealing cavity 5. The pressure is maintained for a period of time to ensure that the cracks and gaps in the sealing cavity 5 are fully filled. Then, the pressure is released and a cleaning medium is introduced into the grouting pipe 6 at a pressure lower than that required to expand the cut 61 to clean the grouting pipe 6. However, it is necessary to control the pressure holding time to not exceed the solidification time of the sealing grout, that is, the grouting pipe 6 needs to be cleaned before the sealing grout solidifies.

[0049] For secondary or re-grouting, the grouting material used in the initial grouting, namely polyacrylic acid resin, can be selected. This can be used as a repair grouting material, possessing the functions of sealing leaks and filling dense micro-cracks (regardless of whether the initial grouting uses the same polyacrylic acid resin as the secondary grouting, the polyacrylic acid resin can fill and seal defects in the original material during secondary grouting), and can be used to restore the overall waterproof integrity of the joint. However, the use of a dual-grouting material scheme (A and B liquids) is generally not recommended for secondary or re-grouting because it is difficult to control the mixing degree of the two liquids in micro-cracks or pores during secondary grouting to ensure repair quality.

[0050] Example 2 This embodiment provides a pipe gallery 1 system.

[0051] The pipe gallery 1 system in this embodiment includes multiple pipe gallery sections 1 and a waterproof structure for pipe gallery joints as in Embodiment 1. The waterproof structure 2 seals the joint between any two adjacent pipe gallery sections 1.

[0052] In summary, this utility model provides a waterproof structure and pipe gallery system for pipe gallery joints. It constructs a sealed space (i.e., a sealed cavity) between two pipe gallery sections using two sealing strips (i.e., a first sealing strip and a second sealing strip) and the two pipe gallery body structures. A grouting pipe is installed within the sealed cavity, penetrating the entire space and protruding at both ends outside the joint. One end of the grouting pipe can be injected with a pre-set pressure to form a sealing grout. The sealing grout can be a single-component grout such as polyacrylic acid resin, or a dual-component grout such as A and B components of an acrylic grouting material that undergoes a cross-linking reaction and solidifies sequentially. The grouting pipe can be made of elastic materials such as rubber. Only the grout in the grouting pipe contains a single-component grout with a cross-linking reaction and solidification. Sufficient pressure is needed to open the cut in the grouting pipe, allowing the grout to flow into the sealing cavity and gradually fill it. After a period of time, the grout in the sealing cavity will solidify on its own and achieve a sealing effect. After grouting, any grout remaining in the grouting pipe needs to be removed by introducing a medium such as gas or water at a certain pressure before it solidifies. This is to prevent the grout remaining in the grouting pipe from blocking it after solidification. In this way, if the solidified sealing grout cracks or is corroded, causing the seal to fail, new sealing grout can be injected through the grouting pipe to repair the sealing structure, thereby extending the service life of the sealing structure and maintaining its sealing performance for a long time.

[0053] 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. A waterproof structure for pipe gallery joints, characterized in that, The system includes a first sealing strip (3) and a second sealing strip (4). The first sealing strip (3) and the second sealing strip (4) are both filled in the joint between two adjacent pipe racks (1). The first sealing strip (3) and the second sealing strip (4) extend from one end of the joint along the length of the joint to the other end of the joint. The first sealing strip (3) and the second sealing strip (4) are spaced apart from each other along the width of the joint, and a sealing cavity (5) is formed between the first sealing strip (3) and the second sealing strip (4). A grouting pipe (6) is provided in the sealing cavity (5). The grouting pipe (6) passes through the sealing cavity (5) along the length of the joint. The grouting pipe (6) is spaced apart from the first sealing strip (3) and / or the second sealing strip (4). Several cuts (61) are provided on the grouting pipe (6). The cuts (61) enable the grouting pipe (6) to communicate with the sealing cavity (5).

2. The waterproof structure for pipe gallery joints according to claim 1, characterized in that, It also includes a sealing grout that fills the sealing cavity (5) between the grouting pipe (6) and the first sealing strip (3) and / or the second sealing strip (4).

3. The waterproof structure for pipe gallery joints according to claim 2, characterized in that, The sealant comprises polyacrylic acid resin.

4. The waterproof structure for pipe gallery joints according to claim 1, characterized in that, It also includes a first sealant (7), which is applied on the other side of the first sealing strip (3) and the second sealing strip (4) relative to the sealing cavity (5), and the first sealant (7) is flush with the edge of the joint.

5. The waterproof structure for pipe gallery joints according to claim 1, characterized in that, It also includes a second sealant (8), which seals the openings at both ends of the sealing cavity (5) and the openings at both ends of the grouting pipe (6).

6. The waterproof structure for pipe gallery joints according to claim 1, characterized in that, A number of the cuts (61) are spaced apart along the length of the grouting pipe (6), or a number of the cuts (61) are arranged in a quincunx pattern on the wall of the grouting pipe (6).

7. The waterproof structure for pipe gallery joints according to claim 6, characterized in that, The joint includes a side plate joint (13) and a bottom plate joint (14). The side plate joint (13) is formed between the side plates (11) of two adjacent pipe rack sections (1), and the bottom plate joint (14) is formed between the bottom plates (12) of two adjacent pipe rack sections (1). A plurality of the cuts (61) are opened on the grouting pipe (6) located in the bottom plate joint (14). The openings of the cuts (61) on the grouting pipe (6) in the bottom plate joint (14) face upward.

8. The waterproof structure for pipe gallery joints according to claim 7, characterized in that, The first sealing strip (3) in the bottom plate seam (14) is located above the second sealing strip (4); the distance between the grouting pipe (6) in the bottom plate seam (14) and the first sealing strip (3) in the bottom plate seam (14) is h1, and the distance between the grouting pipe (6) in the bottom plate seam (14) and the second sealing strip (4) in the bottom plate seam (14) is h2, h1=h2×(1 / 4~1 / 5).

9. The waterproof structure for pipe gallery joints according to claim 7 or 8, characterized in that, Several brackets (9) are supported below the grouting pipe (6) in the bottom plate seam (14), and the brackets (9) are connected between the bottom plates (12) on both sides.

10. A utility tunnel system, characterized in that, It includes several sections of pipe gallery (1) and a waterproof structure for pipe gallery joints as described in any one of claims 1 to 9, wherein the waterproof structure (2) seals the joint between any two adjacent sections of the pipe gallery (1).

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