A through-wall counter-pulling system for a concrete formwork engineering and a waterproof wall structure

Abstract

The utility model belongs to building construction waterproof technical field provides a kind of concrete formwork engineering's through-wall counter-pulling system and waterproof wall structure, the through-wall counter-pulling system in it includes inner rod, two outer rods and water stop component;Two the outer rod respectively with the both ends of the inner rod can be detachably connected;The middle part of the inner rod is equipped with first threaded section;The water stop component includes water stop piece, the assembly part that can be adapted with the first threaded section and the water swellable water stop rubber strip, the both sides of the water stop piece are covered with the water stop rubber strip, the water stop piece is equipped with perforation, the outer circumferential surface of the assembly part is wrapped with rubber ring, the assembly part is located at the perforation and is mutually sealed with the hole wall of the perforation by the rubber ring.

Description

Technical Field

[0001] This utility model belongs to the field of waterproofing technology in building construction, specifically relating to a through-wall tie system and waterproof wall structure for concrete formwork engineering. Background Technology

[0002] Before pouring concrete walls, formwork needs to be erected and fixed and positioned using through-wall bolts. After the pouring is completed, the through-wall bolts remain in the wall. To address water seepage at the bolt locations within the wall, a water-stop plate is typically welded to the middle of the bolt to block the seepage path. However, due to difficulties in ensuring welding quality, seepage paths can still easily form at the locations of the internal bolts within the wall.

[0003] In addition, the holes left on both sides of the wall after the formwork is removed are prone to cracking and water seepage, posing a significant risk of leakage. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a through-wall tie system for concrete formwork engineering, which is beneficial to improving the water-proofing ability.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A through-wall tie rod system for concrete formwork engineering includes an inner rod, two outer rods, and a water-stop assembly. The two outer rods are detachably connected to both ends of the inner rod. The inner rod has a first threaded section in its middle. The water-stop assembly includes a water-stop plate, an assembly that fits the first threaded section, and a water-swellable water-stop strip. Both sides of the water-stop plate are covered with the water-stop strip, and the water-stop plate has a perforation. The outer circumference of the assembly is wrapped with a rubber ring, and the assembly is located at the perforation and is sealed to the wall of the perforation by the rubber ring. In this embodiment, the assembly can be a nut structure or other parts with threaded holes.

[0006] In a preferred embodiment of this utility model, a connecting cap is further included. The connecting cap includes a plastic shell and a connector. The plastic shell is fitted over the connector, and the connector has a screw hole. Both ends of the inner rod are provided with a second threaded section, and one end of each of the two outer rods is provided with a third threaded section. Both the second threaded section and the third threaded section can be adapted to the screw hole.

[0007] In a preferred embodiment of this utility model, the outer rod is provided with a notch, which extends circumferentially along the outer rod.

[0008] In a preferred embodiment of this utility model, the water-stopping component further includes a rubber gasket larger than the perforation, the rubber gasket having an avoidance hole and at least one side having an anti-slip texture; in the assembled state, the rubber gasket is provided on both sides of the water-stopping sheet, the rubber gasket passing through the inner rod and pressing against the outside of the water-stopping strip.

[0009] In a preferred embodiment of this utility model, the water-stopping sheet has a recessed cavity at the corresponding position of the perforation, and the recessed cavity is larger than the perforation.

[0010] In a preferred embodiment of this utility model, the waterstop sheet has several ribs on both sides.

[0011] In a preferred embodiment of this utility model, the water-facing surface of the water-stop sheet is fully covered by the water-stop strip.

[0012] In a preferred embodiment of this utility model, two ribs on the back surface of the water-stop sheet are located on both sides of the perforation and form a groove; the water-stop rubber strip on the back surface of the water-stop sheet is located in the groove.

[0013] The second objective of this utility model is to provide a waterproof wall structure.

[0014] A waterproof wall structure includes a wall, the inner rod, and the water-stopping component.

[0015] Preferably, holes are left on both sides of the wall after the outer rod is disassembled; the holes are filled with a first sealing layer and a second sealing layer, the second sealing layer being located outside the first sealing layer; the first sealing layer is polysulfide sealant, and the second sealing layer is cement mortar.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This utility model employs a segmented through-wall tie-rod structure and a composite water-stop component design. Through the detachable and combinable outer and inner rods, it achieves reusability of the formwork fixing components and minimizes the size of remaining components within the wall, solving the problems of traditional integral through-wall tie rods requiring gas cutting, resulting in significant resource waste and difficult end treatment. The composite water-stop component includes a water-stop plate equipped with an assembly containing a rubber ring, forming an assemblable structure with the first threaded section of the inner rod, fundamentally addressing the difficulty in guaranteeing welding quality. Simultaneously, the combination of a rigid water-stop plate and a flexible, expandable water-stop strip effectively blocks water seepage gaps in the concrete, improving the waterproofing effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the through-wall tie system for concrete formwork engineering according to this utility model (the water-stopping components in the figure are simplified illustrations).

[0019] Figure 2 for Figure 1 A schematic diagram of the connecting cap.

[0020] Figure 3 for Figure 1 A schematic diagram of the inner rod and the water-stopping assembly.

[0021] Figure 4 This is a schematic diagram of a stopper.

[0022] Figure 5 This is a schematic diagram showing the rubber ring and assembly components mounted on the stopper.

[0023] Figure 6 for Figure 5 A schematic diagram showing that the water-facing side of the water-stop sheet is fully covered by the water-stopping strip.

[0024] Figure 7 for Figure 5 A schematic diagram showing the back side of the water-stop sheet covered with a water-stopping strip.

[0025] Figure 8 This is a schematic diagram of the waterproof wall structure of this utility model.

[0026] in: 1-Inner rod, 101-First threaded section, 102-Second threaded section, 2-Outer rod, 201-Notch, 202-Third threaded section, 203-Fourth threaded section, 3-Connecting cap, 301-Plastic shell, 302-Connector, 303-Limiting plate, 4-Water-stop assembly, 401-Water-stop plate, 4011-Perforation, 402-Rubber gasket, 403-Rubber ring, 404-Water-stop strip, 405-Assembly, 5-Wall, 501-Hole, 6-First sealing layer, 7-Second sealing layer. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] Example 1 This embodiment discloses a through-wall tie rod system for concrete formwork engineering, including an inner rod 1, two outer rods 2, connecting caps 3, and a water-stopping component 4. The two outer rods 2 are detachably connected to both ends of the inner rod 1 via connecting caps 3. The connecting cap 3 in this embodiment includes a plastic shell 301 and a connector 302. The plastic shell 301 is fitted over the connector 302, and the connector 302 has a screw hole. In this embodiment, the plastic shell 301 can be tapered, and a certain gap is reserved between the plastic shell 301 and the bolt so that the bolt can be clamped by inserting a tool into the gap and then pulled out of the wall 5 together. Both ends of the inner rod 1 are provided with a second threaded section 102, and one end of each of the two outer rods 2 is provided with a third threaded section 202. Both the second threaded section 102 and the third threaded section 202 can be adapted to the screw hole. By using the connecting cap 3, combined with the second threaded section 102 and the third threaded section 202 of the outer rod 2 and the inner rod 1, the outer rod 2 and the inner rod 1 can be disassembled, forming a disassembled three-section through-wall structure. After the pouring construction is completed and the formwork is removed, the outer rod 2 can be unscrewed from the connecting cap 3. Then, the connecting piece 302 in the connecting cap 3 can be screwed on with a tool to separate it from the inner rod 1. Finally, the connecting cap 3 can be pulled out as a whole to complete the disassembly. In this embodiment, the connecting piece 302 can be a nut structure. In order to limit the position of the inner rod 1 and the outer rod 2 in the screw hole, a limiting piece 303 can be set in the screw hole of the connecting piece 302. The limiting piece 303 blocks the inner rod 1 or the outer rod 2, preventing the inner rod 1 or the outer rod 2 from being inserted too deeply into the screw hole. The limiting piece 303 can be a ring structure or a plate structure, etc., and can be embedded in the screw hole by interference fit.

[0030] In this embodiment, the other end of the inner rod 1 that is adapted to the connecting cap 3 is provided with a fourth threaded section 203. The fourth threaded section 203 can be adapted to the nut, which makes it convenient to lock and fix the template, etc. during construction.

[0031] Furthermore, the structure and usage of the inner rod 1, outer rod 2, and connecting cap 3 in this embodiment can also be found in the prior art. The mechanical connection between the water-stop plate 401 and the inner rod 1 without welding in this embodiment completely eliminates the risk of leakage and damage to the rod body caused by poor welding quality.

[0032] The outer rod 2 is provided with a notch 201, which extends circumferentially along the outer rod 2. The notch 201 is designed to facilitate the use of screwing tools. For example, the bottom surface of the notch 201 can be made flat to accommodate commonly used tools, such as wrenches.

[0033] In this embodiment, the inner rod 1 has a first threaded section 101 in the middle; the water-stopping assembly 4 includes a water-stopping plate 401, an assembly 405 that can be adapted to the first threaded section 101, and a water-swellable water-stopping strip 404. Both sides of the water-stopping plate 401 are covered with the water-stopping strip 404. The water-stopping plate 401 has a through hole 4011. The outer circumference of the assembly 405 is wrapped with a rubber ring 403. The assembly 405 is located at the through hole 4011 and is sealed to the hole wall of the through hole 4011 by the rubber ring 403. In this embodiment, the assembly 405 can be a nut structure or other parts with threaded holes.

[0034] Furthermore, the water-stopping component 4 in this embodiment also includes a rubber gasket 402 larger than the perforation 4011. The rubber gasket 402 has a clearance hole and at least one side has anti-slip texture. In the assembled state, both sides of the water-stopping sheet 401 are provided with rubber gaskets 402. The rubber gaskets 402 pass through the inner rod 1 and press against the outside of the water-stopping strip 404. The rubber gaskets 402 can limit the inner rod 1 and the water-stopping sheet 401, and also have anti-slip and anti-seepage effects. In order to further prevent the rubber gaskets 402 from loosening, a nut structure can be configured on the outside of the rubber gaskets 402, which cooperates with the first threaded section 101 in the middle of the inner rod 1 to limit and lock the rubber gaskets 402. In this embodiment, by using the assembly 405 with the rubber ring 403, the water-stopping strip 404, and the rubber gaskets 402, multi-layer waterproofing is achieved and the waterproofing effect is improved, while eliminating the need for welding construction on the water-stopping sheet 401.

[0035] A recessed cavity is provided on the waterstop 401 at the corresponding position of the perforation 4011, and the cavity is larger than the perforation 4011. The recessed cavity can be used to position the rubber gasket 402, so that the rubber gasket 402 can better limit and compress the waterstop strip 404.

[0036] In this embodiment, the water-stopping strips 404 on both sides of the water-stop sheet 401 can fully or partially cover it, and can be flexibly adjusted according to the actual situation. The water-stopping strips 404 and the water-stop sheet 401 can be fixed together by adhesive. For easy assembly, the rubber ring 403, the assembly component 405, and the water-stopping strips 404 can be assembled and fixed with the water-stop sheet 401 before leaving the factory to form an integral component, which is convenient for carrying, storing and assembling during construction.

[0037] Example 2 The difference between this embodiment and Embodiment 1 is that the waterstop plate 401 in this embodiment has several ribs (not shown in the figure) on both sides. All ribs in this embodiment extend in the same direction and can be concave-convex or convex. The waterstop plate 401 in this embodiment is made of metal, so the ribs and the waterstop plate 401 can be integrally manufactured. The ribs increase the rigidity of the waterstop plate 401 and can even increase the water flow penetration path, thus improving the water-stopping effect.

[0038] Furthermore, the water-facing surface of the waterstop 401 is fully covered with a waterstop strip 404. Two ribs on the back surface of the waterstop 401 are located on either side of the perforation 4011, forming a groove; the waterstop strip 404 on the back surface of the waterstop 401 is located within this groove. The fact that the water-facing surface is fully covered with the waterstop strip 404 allows for a larger water-stopping area after the strip 404 expands upon contact with water, resulting in better waterproofing. On the back surface, the waterstop strip 404 is only placed in the groove area, saving material.

[0039] Example 3 This embodiment discloses a waterproof wall structure, including a wall 5, an inner rod 1 as described in Embodiment 1 or Embodiment 2, and a water-stopping component 4. Holes 501, formed after the outer rod 2 is removed, are left on both sides of the wall 5. The holes 501 are filled with a first sealing layer 6 and a second sealing layer 7, with the second sealing layer 7 located outside the first sealing layer 6. The first sealing layer 6 is a polysulfide sealant, which can be a two-component polysulfide sealant; the second sealing layer 7 is a polymer cement mortar. In this embodiment, the two-component polysulfide sealant injected after the outer rod 2 is removed provides dynamic sealing capability; the outermost polymer cement mortar provides final structural strength and protection, significantly improving the waterproof capability of the wall 5 structure. When filling with the two-component polysulfide sealant, a special injection gun is used, starting from the deepest part of the hole, with a filling depth of approximately 2 / 3 of the hole depth. Injection must be slow and continuous to prevent air bubbles and ensure a dense filling. When filling with polymer cement mortar, fill the remaining part of the hole in layers on the outside of the sealant, and finally smooth it to be flush with the wall surface, and then cure it. The polymer content of the polymer cement mortar should not be less than 5%. The polymer cement mortar needs to be tamped down firmly. After the last layer is smoothed, cover it with plastic film to keep it moist for no less than 3 days.

[0040] The waterproof wall structure 5 in this embodiment has multiple waterproofing mechanisms. The first layer is a rigid barrier achieved using a metal waterstop 401. The second layer is a flexible, self-expanding layer achieved by water-expanding waterproofing strips 404 pre-applied to both sides of the waterstop 401, which can actively fill micro-cracks in the concrete. The third layer is an elastic sealant, which is provided by polysulfide sealant injected into the hole 501 formed after the outer rod 2 is removed, providing dynamic sealing capability. The fourth layer is a structural sealant, which provides final structural strength and protection through polymer cement mortar.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A through-wall tie system for concrete formwork engineering, characterized in that, The device includes an inner rod, two outer rods, and a water-stopping assembly. The two outer rods are detachably connected to both ends of the inner rod. The inner rod has a first threaded section in the middle. The water-stopping assembly includes a water-stopping plate, an assembly that can be adapted to the first threaded section, and a water-swellable water-stopping strip. Both sides of the water-stopping plate are covered with the water-stopping strip. The water-stopping plate has a perforation. The outer circumference of the assembly is wrapped with a rubber ring. The assembly is located at the perforation and is sealed to the wall of the perforation by the rubber ring.

2. The through-wall tie system for concrete formwork engineering according to claim 1, characterized in that, It also includes a connecting cap, which includes a plastic shell and a connector. The plastic shell is fitted over the connector, and the connector has a screw hole. Both ends of the inner rod are provided with a second threaded section, and one end of each of the two outer rods is provided with a third threaded section. Both the second threaded section and the third threaded section can be adapted to the screw hole.

3. The through-wall tie system for concrete formwork engineering according to claim 1, characterized in that, The outer rod is provided with a notch or groove, which extends circumferentially along the outer rod.

4. The through-wall tie system for concrete formwork engineering according to claim 1, characterized in that, The water-stopping assembly also includes a rubber gasket larger than the perforation. The rubber gasket has a clearance hole and at least one side has an anti-slip texture. In the assembled state, the rubber gasket is provided on both sides of the water-stopping sheet. The rubber gasket passes through the inner rod and presses against the outside of the water-stopping strip.

5. The through-wall tie system for concrete formwork engineering according to claim 1 or 4, characterized in that, The water-stopping plate has a recessed cavity at the corresponding position of the perforation, and the recessed cavity is larger than the perforation.

6. The through-wall tie system for concrete formwork engineering according to claim 1, characterized in that, The waterstop plate has several ribs on both sides.

7. The through-wall tie system for concrete formwork engineering according to claim 1, characterized in that, The water-facing surface of the water-stop sheet is completely covered by the water-stop rubber strip.

8. The through-wall tie system for concrete formwork engineering according to claim 6, characterized in that, Two of the ribs on the back surface of the waterstop sheet are located on both sides of the perforation and form a groove; the waterstop rubber strip on the back surface of the waterstop sheet is located in the groove.

9. A waterproof wall structure, characterized in that, It includes the wall, the inner rod as described in any one of claims 1-8, and the water-stopping component as described in any one of claims 1-8.

10. The waterproof wall structure according to claim 9, characterized in that, Holes formed after the outer rods are disassembled are left on both sides of the wall; the holes are filled with a first sealing layer and a second sealing layer, with the second sealing layer located outside the first sealing layer; the first sealing layer is polysulfide sealant, and the second sealing layer is cement mortar.

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