Retractable embedded waterstop steel plate

Abstract

The application discloses a telescopic embedded waterstop steel plate, which comprises a waterstop steel plate body, a corrugated deformation section is arranged at the position of a deformation joint of the waterstop steel plate body, and the corrugated deformation section is a continuous corrugated structure capable of realizing deformation in three directions of up-down, left-right and front-back; and a compressible filling material is filled in the corrugated deformation section, and the compressible filling material is foamed plastic, polyethylene foamed board or closed-cell foamed rod. The application has the advantages that the continuous corrugated deformation section can adapt to the deformation of the deformation joint in the multiple directions of up-down, left-right and front-back, the waterstop steel plate is not easy to be cracked, and the waterstop steel plate has good water-proof continuity; the galvanized steel plate or stainless steel plate material is adopted, so that the waterstop steel plate is corrosion-resistant and aging-resistant, and the defects of the traditional rubber waterstop belt, such as easy aging and short service life, are solved; the high-compression-rate compressible material is filled in the corrugated area, so that the corrugation is prevented from being blocked by cement slurry, and the long-term expansion and contraction ability is maintained.

Description

Technical Field

[0001] This invention belongs to the field of waterproof construction technology for underground concrete structures, specifically relating to a retractable embedded waterstop steel plate. Background Technology

[0002] Underground concrete structures, especially those with concealed installations, are subject to long-term effects such as uneven foundation settlement, concrete shrinkage and creep, and temperature stress. Therefore, expansion joints are necessary to release structural deformation. Traditional waterproofing structures for expansion joints often employ a combination of back-mounted rubber waterstops, embedded rubber waterstops, and either Ω-type rubber waterstops or steel plate water collection boxes. However, rubber waterstops have drawbacks such as limited expansion and contraction, susceptibility to breakage, easy aging, and a service life that is not synchronized with the concrete structure. This makes expansion joints a weak point in waterproofing, prone to leakage, and affecting structural durability and safety. Summary of the Invention

[0003] The purpose of this invention is to provide a retractable embedded waterstop steel plate that overcomes the shortcomings of existing rubber waterstops, such as poor waterproof performance, easy aging, small deformation, and complex construction. It achieves the technical effects of waterproof life matching the structure's lifespan, strong three-dimensional deformation adaptability, easy installation, and reliable waterproofing.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a retractable embedded waterstop steel plate, comprising a waterstop steel plate body, wherein the waterstop steel plate body is provided with a folded deformation section corresponding to the deformation joint position, and the folded deformation section is a continuous corrugated structure capable of deformation in three-dimensional directions of up and down, left and right, and front and back.

[0005] As a preferred embodiment of the present invention, the folded deformation section is filled with a compressible filler material, which is foam plastic, polyethylene foam board or closed-cell foam rod.

[0006] As a preferred embodiment of the present invention, the compressibility of the compressible filling material is not less than 50%, and the height difference between the crest and trough of the folded deformation section is 30mm-80mm.

[0007] As a preferred technical solution of the present invention, the two ends of the water-stop steel plate body are provided with multiple upper anchoring parts, and any one of the upper anchoring parts is a hook structure.

[0008] As a preferred technical solution of the present invention, the two ends of the water-stop steel plate body are provided with multiple lower anchoring parts, and any one of the lower anchoring parts is a hook structure.

[0009] As a preferred embodiment of the present invention, a reinforcing rod is provided between two adjacent lower anchoring parts, and the reinforcing rod is a columnar structure.

[0010] As a preferred technical solution of the present invention, the lower anchoring part and the water-stop steel plate body are an integral structure, and the upper anchoring part and the water-stop steel plate body are an integral structure.

[0011] As a preferred technical solution of the present invention, the water-stop steel plate body is a galvanized steel plate or a stainless steel plate, and the folded deformation section and the water-stop steel plate body are an integral structure.

[0012] Compared with the prior art, the beneficial effects of the present invention are: The continuous corrugated deformation section can adapt to multi-directional structural deformation of the expansion joint in the vertical, horizontal, front and back directions. The water-stop steel plate is not easy to crack and has good waterproof continuity. Made of galvanized steel or stainless steel, it is corrosion-resistant and anti-aging, completely solving the defects of traditional rubber waterstops such as easy aging and short lifespan. The folded areas are filled with a high compressibility material to prevent cement slurry from clogging the corrugations and to maintain the elasticity for a long time without failure. The upper and lower hook-type anchoring parts, combined with the reinforcing rod structure, have strong bonding force with concrete, making them less prone to floating, displacement, or detachment, and eliminating leakage channels. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the installation cross section; Figure 3 For the present invention Figure 2 A magnified schematic diagram of region D in the diagram; Figure 4 For the present invention Figure 2 A magnified schematic diagram of region E in the diagram; In the picture: 1. Waterstop steel plate body; 11. Folded deformation section; 21. Upper anchorage part; 22. Lower anchorage part; 23. Reinforcing rod; 3. Waterproof part; 31. Positioning block; 4. Top plate; 41. Limiting block; 5. Compressible filling material; 6. Expansion joint lining plate; 7. Waterproof seat on the water-facing side; 8. Concrete structure; 9. L-shaped frame; 91. Positioning groove; 92. Limiting groove. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Example 1 Please see Figure 1 This invention provides a retractable embedded waterstop steel plate, including a waterstop steel plate body 1. The waterstop steel plate body 1 is provided with a pleated deformation section 11 at the position corresponding to the expansion joint. The pleated deformation section 11 is a continuous corrugated structure that can achieve deformation in three-dimensional directions: up and down, left and right, and front and back. The continuous corrugated pleated deformation section 11 can adapt to multi-directional deformation such as uneven settlement of the structure, temperature expansion and contraction, and lateral displacement, so as to avoid the waterstop steel plate being torn and maintain the continuity of waterstop.

[0016] In this embodiment, the folded deformation section 11 is filled with compressible filler material 5, which is foam plastic, polyethylene foam board or closed-cell foam rod, to prevent cement slurry from entering and blocking the corrugations during pouring, and to ensure that the folded deformation section 11 always has the ability to expand and contract.

[0017] In this embodiment, the compression ratio of the compressible filling material 5 is not less than 50%, and the height difference between the crest and trough of the folded deformation section 11 is 30, taking into account both large deformation margin and structural stiffness, so that it does not fail or collapse during deformation.

[0018] In this embodiment, multiple upper anchoring parts 21 are provided at both ends of the waterstop steel plate body 1, and any one of the upper anchoring parts 21 is a hook structure. The hook-shaped upper anchoring parts 21 greatly improve the interlocking force with the concrete, prevent the waterstop steel plate from floating, shifting, or detaching, and form a reliable anti-seepage interface. Multiple lower anchoring parts 22 are provided at both ends of the waterstop steel plate body 1, and any one of the lower anchoring parts 22 is a hook structure. The bidirectional anchoring is more balanced, which improves the overall pull-out resistance and lateral displacement resistance.

[0019] In this embodiment, a reinforcing rod 23 is provided between two adjacent lower anchoring parts 22, and the reinforcing rod 23 is a columnar structure. The reinforcing rod 23 enhances the overall rigidity of the lower anchoring part 22, avoids deformation and collapse of the anchoring hook during pouring and vibration, and ensures stable anchoring effect.

[0020] In this embodiment, the lower anchoring part 22 and the waterstop steel plate body 1 are an integral structure, and the upper anchoring part 21 and the waterstop steel plate body 1 are an integral structure. The integral molding has no welding or weak points in the splicing, resulting in high strength and good integrity, eliminating the risk of leakage and breakage at the joints.

[0021] In this embodiment, the waterstop steel plate body 1 is a galvanized steel plate or a stainless steel plate. Galvanized or stainless steel is corrosion-resistant and anti-aging, and its service life is synchronized with that of the concrete structure. The folded deformation section 11 and the waterstop steel plate body 1 are an integral structure. The integral fold has high strength, strong durability, and a longer waterproof life.

[0022] Please see Figures 2 to 4The installation process is as follows: When constructing the concrete structure 8 on one side of the expansion joint, the retractable embedded waterstop steel plate is pre-embedded and fixed according to the design position. At the same time, attention is paid to ensuring that the center position of the folded deformation section 11 is aligned with the design center position of the expansion joint. Concrete on one side of the expansion joint is then poured. The folded deformation section 11 is centered and aligned to ensure uniform deformation stress and avoid local tearing and waterproofing failure due to misalignment. When constructing the concrete structure 8 on the other side of the expansion joint, filler material (expansion joint padding plate 6) is set above and below the folded deformation section 11 of the waterstop steel plate according to the design to ensure that the expansion joint width is consistent with the design. The expansion joint padding plate 6 precisely controls the joint width to prevent concrete from squeezing into the folded area and protect the folded deformation section 11 from free expansion and contraction. The other end of the waterstop steel plate is fixed according to the design requirements. Concrete structure 8 on the other side of the expansion joint is then poured. Both ends are reliably fixed to prevent displacement and twisting during pouring, ensuring that the waterstop steel plate is centered, straight, and has a consistent waterproofing effect.

[0023] Correspondingly, such as Figure 2 , Figure 3 As shown, the lower expansion joint liner 6 is placed on top of the water-facing waterproof seat 7, which provides stable support. An L-shaped frame 9 is also fixedly installed between the upper expansion joint liner 6 and the concrete structure 8. The L-shaped frame 9 provides rigid support and installation reference, fixes the liner 6, and provides an installation interface for the upper components, making the construction more orderly. A waterproof part 3 is fixedly installed on the L-shaped frame 9. In order to increase the installation efficiency of the waterproof part 3, a positioning block 31 can be added to the bottom of the waterproof part 3. A positioning groove 91 that matches the positioning block 31 is opened on the L-shaped frame 9. The positioning of the waterproof part 3 is improved by the cooperation of the positioning block 31 and the positioning groove 91. A top plate 4 is also fixedly installed on the concrete structure 8.

[0024] Correspondingly, such as Figure 4 As shown, in order to achieve efficient installation of the top plate 4, a limiting block 41 can be fixedly installed at the bottom of the top plate 4, and a limiting groove 92 adapted to the limiting block 41 can be opened on the L-shaped frame 9.

[0025] Example 2 Please see Figure 1 This is the second embodiment of the invention, which is based on the previous embodiment, but with the following differences: the compressibility of the compressible filling material 5 is not less than 50%, and the height difference between the crest and trough of the folded deformation section 11 is 55mm, taking into account both large deformation allowance and structural rigidity, so that it does not fail or collapse during deformation.

[0026] Example 3 Please see Figure 1 This is the third embodiment of the invention, which is based on the previous embodiment, but with the following differences: the compressibility of the compressible filling material 5 is not less than 50%, the height difference between the crest and trough of the folded deformation section 11 is 80mm, taking into account both large deformation allowance and structural rigidity, and it does not fail or collapse during deformation.

[0027] The working principle and usage process of this invention are as follows: Erect the formwork for the concrete structure 8 on one side of the expansion joint, and hoist the waterstop steel plate to the designed position; adjust the waterstop steel plate so that the center position of the folded deformation section 11 is precisely aligned with the designed centerline of the expansion joint; use the upper anchoring part 21 and the lower anchoring part 22 to tie and fix the waterstop steel plate to the reinforcing steel skeleton to prevent floating or displacement; pour the concrete on this side, vibrate and compact it to complete the construction of the single-sided structure; after the single-sided concrete reaches its strength, clean the expansion joint interface. Expansion joint lining plates 6 are installed above and below the folded deformation section 11, and the design joint width is strictly controlled. The lower lining plate is placed on top of the waterproof seat 7 on the water-facing side to ensure stable support and reliable sealing. An L-shaped frame 9 is installed and fixed between the upper lining plate and the concrete structure to form an upper support system. The positioning block 31 at the bottom of the waterproof section 3 is aligned with the positioning groove 91 on the L-shaped frame 9 to complete quick positioning. The waterproof section 3 is fixed so that it fits tightly with the L-shaped frame 9 to form a top sealed waterproof structure. The other end of the water-stop steel plate is reliably fixed to the steel reinforcement skeleton to ensure that the whole is straight and without twisting. After the formwork on the other side is erected and accepted, the concrete structure 8 on the other side is poured; the limiting block 41 at the bottom of the top plate 4 is aligned with the limiting groove 92 on the L-shaped frame 9 and quickly snapped into position; the top plate 4 is fixed to complete the full section closure of the top of the expansion joint and form a complete waterproof system.

[0028] Although embodiments of the invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable embedded waterstop steel plate, characterized in that: It includes a waterstop steel plate body (1), and the waterstop steel plate body (1) is provided with a folded deformation section (11) at the position of the deformation joint. The folded deformation section (11) is a continuous corrugated structure that can achieve deformation in three-dimensional directions: up and down, left and right, and front and back.

2. The retractable embedded waterstop steel plate according to claim 1, characterized in that: The folded deformation section (11) is filled with compressible filler material (5), and the compressible filler material (5) is foam plastic, polyethylene foam board or closed-cell foam rod.

3. The retractable embedded waterstop steel plate according to claim 2, characterized in that: The compressible filling material (5) has a compression rate of not less than 50%, and the height difference between the crest and trough of the folded deformation section (11) is 30mm-80mm.

4. The retractable embedded waterstop steel plate according to claim 1, characterized in that: The water-stop steel plate body (1) has multiple upper anchoring parts (21) at both ends, and any one of the upper anchoring parts (21) is a hook structure.

5. A retractable embedded waterstop steel plate according to claim 4, characterized in that: The water-stop steel plate body (1) has multiple lower anchoring parts (22) at both ends, and any one of the lower anchoring parts (22) is a hook structure.

6. A retractable embedded waterstop steel plate according to claim 5, characterized in that: A reinforcing rod (23) is provided between two adjacent lower anchoring parts (22), and the reinforcing rod (23) is a columnar structure.

7. A retractable embedded waterstop steel plate according to claim 5, characterized in that: The lower anchoring part (22) and the water-stop steel plate body (1) are an integral structure, and the upper anchoring part (21) and the water-stop steel plate body (1) are an integral structure.

8. A retractable embedded waterstop steel plate according to claim 1, characterized in that: The waterstop steel plate body (1) is a galvanized steel plate or a stainless steel plate, and the folded deformation section (11) and the waterstop steel plate body (1) are an integral structure.

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