Water stop and drainage belt suitable for deformation joint of tunnel without internal water pressure

Abstract

The utility model discloses a water-stopping drainage belt suitable for an internal-water-pressure-free tunnel deformation joint, and belongs to the technical field of tunnel water stopping and waterproofing. The water stop drainage belt comprises a groove and wing plates, a soft permeable pipe is arranged in the groove, the wing plates are symmetrically arranged on the two sides of the outer portion of the groove, middle protruding ribs are evenly arranged on the wing plates, end protruding ribs are arranged at the ends of the wing plates, the cross section of each middle protruding rib is in an equilateral triangle shape or a rectangular shape, and the cross section of each end protruding rib is in a right triangle shape or a rectangular shape. And a plurality of water permeable holes are uniformly formed in the part, above the wing plate, of the groove. When leaked water is blocked, the permeable pipe sucks the water into the drainage channel through capillary action, and the permeable pipe has good filterability and can prevent silt impurities from entering the drainage channel and ensure that the drainage channel is not blocked, so that the leaked water is efficiently guided to a tunnel drainage system and discharged, the leaked water is prevented from being accumulated at a waterproof position, and the service life of the tunnel drainage system is prolonged. And the safety of tunnel engineering is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel water-stopping and waterproofing, and in particular relates to a water-stopping and drainage belt suitable for deformation joints of tunnels without internal water pressure. Background Art

[0002] In tunnel construction, water leakage often occurs at expansion joints. Rubber waterstops are the most commonly used waterproofing measure for tunnel expansion joints. They utilize the high elasticity and compression properties of rubber to elastically deform under load, thereby tightening, sealing, and waterproofing the joints.

[0003] At present, most of the waterstops commonly used in tunnel deformation joints only have waterproofing functions but no drainage functions. Most of the waterstops with drainage functions often have drainage grooves blocked by impurities during use, causing leaked water to remain in the waterproof position for a long time, causing erosion to the tunnel structure. In cold weather, the leaked water freezes and produces frost heave force, causing certain damage to the tunnel, thereby reducing the safety of the tunnel project. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that conventional rubber waterstops in tunnel projects without internal water pressure have no drainage or poor drainage, resulting in the inability of leaked water to be discharged from the tunnel. A waterstop and drainage belt is provided that can effectively discharge the leaked water from the tunnel, avoid the accumulation of leaked water in waterproof positions, and improve the safety of tunnel projects.

[0005] A water-stop drainage strip suitable for deformation joints of tunnels without internal water pressure, characterized in that it includes a groove and a wing plate, the central angle of the opening at the top of the groove is 90°, a soft water-permeable pipe is provided in the groove, the diameter of the water-permeable pipe is not greater than the inner diameter of the groove, wing plates are symmetrically arranged on both sides of the outside of the groove, middle ribs are evenly arranged on the wing plates, and end ribs are arranged on the ends of the wing plates, the cross-section of the middle rib is an equilateral triangle or a rectangle, the cross-section of the end rib is a right triangle or a rectangle, the height of the middle rib and the end rib is the same, the width of the middle rib is less than or equal to the width of the end rib, and a number of water-permeable holes are evenly opened in the part of the groove above the wing plate.

[0006] Furthermore, the water-permeable pipe is composed of carbon spring steel wire, filter cloth, etc.

[0007] Furthermore, the cross section of the water-permeable hole is circular, rectangular or triangular.

[0008] The beneficial effect of the present invention is that by arranging a soft permeable pipe within the groove of the waterstop, when the leaking water is blocked, the soft permeable pipe draws the water into the drainage channel formed inside the groove through capillary action. The soft permeable pipe has good filtering properties, which can prevent mud and sand impurities from entering the drainage channel, ensuring that the drainage channel is not blocked, thereby guiding the leaking water to the tunnel drainage system and draining it, preventing the leaking water from accumulating in the waterproof position, and improving the safety of the tunnel project. The permeable holes and groove openings can effectively guide the seepage water from the deformation joint and the two side wing plates to the soft permeable pipe. The groove can protect and limit the soft permeable pipe, preventing the soft permeable pipe from being damaged or offset during concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural diagram of Example 1.

[0010] Figure 2 Schematic diagram of the cross-sectional structure of Example 1.

[0011] Figure 3 This is a schematic diagram of the construction and installation of Example 1.

[0012] Figure 4 This is a schematic diagram of the cross-sectional structure of Example 2.

[0013] Among them: 1-wing plate, 2-groove, 3-permeable pipe, 4-drainage channel, 5-permeable hole, 6-middle rib, 7-end rib, 8-deformation joint, 9-first batch of concrete, 10-later batch of concrete. DETAILED DESCRIPTION

[0014] Example 1: A water-stopping drainage strip suitable for use in deformation joints of tunnels without internal water pressure comprises a groove 2 and a wing plate 1. The opening at the top of the groove 2 has a central angle of 90°. A flexible water-permeable pipe 5 is positioned within the groove 2, its diameter matching the inner diameter of the groove 2. The water-permeable pipe 3 is composed of carbon spring steel wire and filter cloth. The carbon spring steel wire supports the pipe, while the filter cloth absorbs, permeates, and filters water. A drainage channel 4 is formed in the center of the groove 2. Wing plates 1 are symmetrically positioned on either side of the groove 2. Intermediate ribs 6 are evenly distributed on the wing plates 1, and end ribs 7 are positioned at the ends of the wing plates 1. The intermediate ribs 6 have an equilateral triangle cross-section, while the end ribs 7 have a right-angled triangle cross-section. The intermediate ribs 6 and end ribs 7 have the same height and are narrower than the end ribs 7. The provision of intermediate ribs 6 and end ribs 7 effectively extends the seepage path, improves the waterproofing effect, and strengthens the anchoring effect. The portion of the groove 2 above the wing plate 1 is evenly provided with a number of water holes 5 , the cross section of the water holes 5 being circular. By providing the water holes 5 , the leaked water on the wing plates 1 on both sides can be better directed to the water pipes 3 .

[0015] The opening of groove 2 directs water leaking from the expansion joint and wing plate 1 through the opening to the flexible permeable pipe. It also protects and limits permeable pipe 3, preventing damage or displacement during concrete pouring. Once the leaking water is blocked by wing plate 1 and groove 2, permeable pipe 3 draws it into drainage channel 4 through capillary action. Through drainage channel 4, the leaked water is discharged to the tunnel drainage system. Furthermore, permeable pipe 3 has excellent filtering properties, preventing sediment and impurities from entering the drainage channel, ensuring it remains unobstructed and improving drainage efficiency.

[0016] According to the tunnel construction drawings, the opening direction of the groove 2 is the outside of the tunnel. The water-stop drainage strip is installed at the corresponding position of the deformation joint 8. If necessary, steel bars and bolts are used to fix the position to ensure that the installation error meets the relevant requirements. After installation and fixation, the first batch of concrete 9 is poured. After the first batch of concrete 9 meets the relevant requirements, the subsequent batch of concrete 10 is poured. In this embodiment, the inner diameter of the groove 2 is 52mm, the central angle of the opening of the groove 2 is 90°, the outer diameter of the water-permeable pipe 3 is 50mm, the height of the middle rib 6 and the end rib 7 are both 6mm, the width of the middle rib 6 is 6mm, and the width of the end rib 7 is 30mm.

[0017] Example 2: A water-stopping drainage strip suitable for use in deformation joints of tunnels without internal water pressure comprises a groove 2 and a wing plate 1. The opening at the top of the groove 2 has a central angle of 90°. A flexible permeable pipe 5 is disposed within the groove 2, the diameter of which matches the inner diameter of the groove 2. The permeable pipe 3 is composed of carbon spring steel wire and filter cloth. The carbon spring steel wire supports the pipe body, while the filter cloth absorbs, permeates, and filters water. A drainage channel 4 is formed in the center of the groove 2. Wing plates 1 are symmetrically disposed on either side of the groove 2. Intermediate ribs 6 are evenly distributed on the wing plates 1, and end ribs 7 are disposed at the ends of the wing plates 1. The cross-sections of the intermediate ribs 6 and the end ribs 7 are both rectangular, and the intermediate ribs 6 and the end ribs 7 have the same height and width. The provision of the intermediate ribs 6 and the end ribs 7 effectively extends the seepage path, improves the waterproofing effect, and strengthens the anchoring effect. The portion of the groove 2 above the wing plate 1 is evenly provided with a number of water holes 5 , the cross section of the water holes 5 being rectangular. By providing the water holes 5 , the leaked water on the wing plates 1 on both sides can be better directed to the water pipes 3 .

[0018] The opening of groove 2 directs water leaking from the expansion joint and wing plate 1 through the opening to the flexible permeable pipe. It also protects and limits permeable pipe 3, preventing damage or displacement during concrete pouring. Once the leaking water is blocked by wing plate 1 and groove 2, permeable pipe 3 draws it into drainage channel 4 through capillary action. Through drainage channel 4, the leaked water is discharged to the tunnel drainage system. Furthermore, permeable pipe 3 has excellent filtering properties, preventing sediment and impurities from entering the drainage channel, ensuring it remains unobstructed and improving drainage efficiency.

[0019] According to the tunnel construction drawings, the opening direction of the groove 2 is the outside of the tunnel. The water-stop drainage strip is installed at the corresponding position of the deformation joint 8. If necessary, steel bars and bolts are used to fix the position to ensure that the installation error meets the relevant requirements. After installation and fixation, the first batch of concrete 9 is poured. After the first batch of concrete 9 meets the relevant requirements, the subsequent batch of concrete 10 is poured. In this embodiment, the inner diameter of the groove 2 is 52mm, the central angle of the opening of the groove 2 is 90°, the outer diameter of the permeable pipe 3 is 50mm, the height of the middle rib 6 and the end rib 7 are both 6mm, and the width of the middle rib 6 and the end rib 7 are both 6mm.

Claims

1. A water-stopping and drainage strip suitable for deformation joints in tunnels without internal water pressure, characterized by: It includes a groove and a wing plate, the central angle of the opening at the top of the groove is 90°, a soft water-permeable pipe is arranged in the groove, the diameter of the water-permeable pipe is not larger than the inner diameter of the groove, and wing plates are symmetrically arranged on both sides of the outside of the groove, middle ribs are evenly arranged on the wing plates, and end ribs are arranged on the ends of the wing plates. The cross-section of the middle rib is an equilateral triangle or a rectangle, the cross-section of the end rib is a right triangle or a rectangle, the height of the middle rib and the end rib is the same, the width of the middle rib is less than or equal to the width of the end rib, and a number of water-permeable holes are evenly opened in the part of the groove above the wing plate.

2. A water-stopping and drainage strip suitable for deformation joints in tunnels without internal water pressure as claimed in claim 1, characterized in that The water-permeable pipe is composed of carbon spring steel wire and filter cloth.

3. The water-stopping drainage strip suitable for deformation joints of tunnels without internal water pressure as claimed in claim 1, characterized in that The cross section of the water permeable hole is circular, rectangular or triangular.

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