A leakproof formwork splicing structure for construction concrete pouring
By employing a double-sealing structure and reinforcing rib structure at the joints of the formwork, combined with adjustable support components, the problem of easy grout leakage in traditional formwork joints has been solved, achieving a highly efficient sealing effect and improving the quality of the components.
Patent Information
- Application Number
- CN202522075205.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-26
AI Technical Summary
Traditional formwork splicing structures are prone to high grout leakage rates due to processing errors and installation deviations, resulting in concrete waste and surface defects in components, and increasing the cost of later repairs.
It adopts a dual sealing structure, including an elastic sealing gasket and an expansion sealing strip, combined with a flexible gasket and reinforcing rib structure, and an adjustable anti-deformation support component, to form an all-round sealing and improved bending strength.
It effectively reduces grout leakage, improves concrete pouring quality, reduces post-repair costs, and ensures component dimensional accuracy and flexural strength.
Smart Images
Figure CN224679126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a splicing structure for a grout-proof formwork for concrete pouring in building construction. Background Technology
[0002] Concrete is a general term for engineering composite materials in which aggregates are bound together by cementing materials. The term "concrete" usually refers to cement concrete, also known as ordinary concrete, which is made by mixing cement as the cementing material, sand and gravel as aggregates, and water (which may contain admixtures and additives) in a certain proportion. It is widely used in civil engineering. Concrete pouring refers to the process of pouring concrete into a mold until it hardens. In civil engineering, concrete and other materials are poured into molds to form a predetermined shape.
[0003] Traditional formwork often uses a single rubber strip or bolt compression seal. The splicing gap is prone to leakage due to processing errors and installation deviations, resulting in a high leakage rate. This not only wastes concrete but also causes defects such as honeycomb and pitting on the surface of the components, leading to increased repair costs later. To address these issues, a new anti-leakage formwork splicing structure for concrete pouring in building construction is proposed. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a splicing structure for anti-leakage formwork for concrete pouring in building construction. It solves the problem that the current traditional formwork mostly uses a single rubber strip seal or bolt compression seal, and the splicing gap is prone to leakage due to processing errors and installation deviations. The leakage rate is high, which not only wastes concrete, but also causes defects such as honeycomb and pitting on the surface of the components, resulting in increased repair costs later.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a splicing structure for preventing grout leakage during concrete pouring in building construction, comprising a first template, a second template, and a sealing strip. The sealing strip is disposed between the first template and the second template. Splicing edges are fixedly connected to the left and right ends of the front side of both the first template and the second template. An elastic sealing gasket with a trapezoidal cross-section is fixedly connected to the left and right ends of the sealing strip near the splicing edge. An expansion waterstop strip is fixedly connected to the left and right ends of the sealing strip in front of the elastic sealing gasket. A first sealing groove adapted to the elastic sealing gasket is opened on the rear side of the splicing edge near the sealing strip. A second sealing groove adapted to the expansion waterstop strip is opened on the front side of the splicing edge near the sealing strip. A flexible pad adapted to the ground is fixedly connected to the bottom of both the first template and the second template. An anti-deformation support component is provided in the middle of the front side of both the first template and the second template.
[0006] Preferably, the front sides of both the first template and the second template are fixedly connected with a plurality of vertically arranged first reinforcing ribs, and the front sides of both the first template and the second template are fixedly connected with a plurality of horizontally arranged second reinforcing ribs.
[0007] Preferably, the front end of the splicing edge is provided with several fixing holes, and two adjacent splicing edges are fixedly connected by bolts, with the bolts located inside the two fixing holes.
[0008] Preferably, the anti-deformation support assembly includes a connector for connecting to the template and an embedded part for connecting to the ground, with a fixing seat fixedly connected above the embedded part.
[0009] Preferably, a rotating seat is rotatably connected to the front side of the connector, a first threaded rod is fixedly connected to the bottom of the rotating seat, and an adjusting sleeve is threadedly connected to the outer side below the first threaded rod.
[0010] Preferably, the lower end of the adjusting sleeve is internally threaded with a second threaded rod, and the end of the second threaded rod away from the adjusting sleeve is fixedly connected to a locking block with an open bottom, the locking block being engaged inside the fixed seat.
[0011] Preferably, two sets of rotating handles are fixedly connected to the middle of the outer side of the adjusting sleeve.
[0012] Compared with the prior art, the advantages of this utility model are: 1. This utility model achieves "double sealing" at the core splicing point. The elastic sealing gasket of the sealing strip precisely matches the first sealing groove of the splicing edge. When the bolts are tightened, the elastic gasket is squeezed and deformed, filling the gap in the groove. The expansion water-stop strip on the front side is embedded in the second sealing groove. When it comes into contact with moisture in the concrete, it expands and further blocks the tiny gaps. This double protection reduces the leakage rate. The flexible pad at the bottom adapts to the ground. The flexible pad at the bottom of the formwork can fit the uneven ground, avoiding the leakage caused by the ground depression at the bottom of the traditional formwork. This forms an all-round seal of "sponge point + bottom", which is suitable for complex construction sites, improves the quality of concrete pouring, and reduces the cost of later repairs.
[0013] 2. This utility model strengthens the template body. The vertical first reinforcing rib and the horizontal second reinforcing rib on the front side of the first template and the second template form a "grid-like" support, which improves the bending strength of the template and prevents the middle of the template from bulging during pouring. The adjustable support component and the anti-deformation support component are combined with "first threaded rod + adjusting sleeve + second threaded rod" to flexibly adjust the support length. With the help of the embedded parts and the ground fixation of the fixing seat, it can resist the lateral pressure during concrete pouring, prevent the template from moving outward as a whole, and ensure the dimensional accuracy of the concrete component. Attached Figure Description
[0014] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the sealing strip structure in this utility model; Figure 3 This is a schematic diagram of the splicing edge structure in this utility model; Figure 4 This is a schematic diagram of the anti-deformation support component structure in this utility model; Figure 5 for Figure 2 A magnified view of a section at point A in the middle; Figure 6 for Figure 3 A magnified view of a section at point B in the middle; Figure 7 for Figure 4 A magnified view of a section at point C.
[0015] The numbers on the map are: 1. First template; 2. Second template; 3. Sealing strip; 301. Elastic sealing gasket; 302. Expansion waterstop strip; 4. Splicing edge; 401. First sealing groove; 402. Second sealing groove; 403. Fixing hole; 5. Anti-deformation support assembly; 501. Connector; 502. Rotating seat; 503. First threaded rod; 504. Adjusting sleeve; 505. Second threaded rod; 506. Rotating handle; 507. Clamping block; 508. Embedded part; 509. Fixing seat; 6. First reinforcing rib; 7. Second reinforcing rib; 8. Flexible pad; 9. Bolt. Detailed Implementation
[0016] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.
[0018] Reference Figure 1 - Figure 7As shown, a splicing structure for preventing grout leakage during concrete pouring in building construction includes a first template 1, a second template 2, and a sealing strip 3. The sealing strip 3 is disposed between the first template 1 and the second template 2. Splicing edges 4 are fixedly connected to the left and right ends of the front sides of both the first template 1 and the second template 2. Trapezoidal elastic sealing gaskets 301 are fixedly connected to the left and right sides of the end of the sealing strip 3 near the splicing edge 4. Expansion waterstop strips 302 are fixedly connected to the left and right ends of the sealing strip 3 in front of the elastic sealing gaskets 301. A first sealing groove 401, matching the elastic sealing gasket 301, is opened on the rear side of the splicing edge 4 near the sealing strip 3. A second sealing groove 402, matching the expansion waterstop strip 302, is opened on the front side of the splicing edge 4 near the sealing strip 3. Both the bottom of the first template 1 and the second template 2 are fixedly connected with flexible pads 8 adapted to the ground. The front middle of the first template 1 and the second template 2 are provided with anti-deformation support components 5. In this embodiment, the front side refers to the side away from the concrete, and the rear side refers to the side close to the concrete. In this embodiment, the bolts 9 are used to connect the first template 1 and the second template 2 only to fix the first template 1, the second template 2 and the sealing strip 3. The bolts 9 alone cannot bear the pressure when pouring concrete. Therefore, the template is reinforced as a whole by the template steel back rib (not shown) after splicing (this is common knowledge that can be understood by those in the art and can be understood without creative effort, so it will not be elaborated here).
[0019] Specifically, the front sides of the first template 1 and the second template 2 are fixedly connected with several vertically arranged first reinforcing ribs 6, and the front sides of the first template 1 and the second template 2 are fixedly connected with several horizontally arranged second reinforcing ribs 7. The first reinforcing ribs 6 are made of C-shaped steel, and the second reinforcing ribs 7 are made of angle steel. The first reinforcing ribs 6 and the second reinforcing ribs 7 constitute a reinforcing rib system to improve the bending stiffness of the template.
[0020] Specifically, several fixing holes 403 are provided through the front end of the splicing edge 4. Two adjacent splicing edges 4 are fixedly connected by bolts 9. The bolts 9 are set inside the two fixing holes 403. After splicing, the first template 1 and the second template 2 will have two splicing edges 4 at the splicing position. The bolts 9 can be inserted into the fixing holes 403 opened on the two splicing edges 4 to fix the two splicing edges 4, so that the first template 1 and the second template 2 can squeeze the sealing strip 3 to form a preliminary seal.
[0021] Specifically, the anti-deformation support component 5 includes a connector 501 for connecting with the template and an embedded part 508 for connecting with the ground. A fixing seat 509 is fixedly connected above the embedded part 508. Specifically, the connector 501 can be fixedly connected to the middle of the front side of the template by welding or screws.
[0022] Furthermore, a rotating seat 502 is rotatably connected to the front side of the connector 501, and a first threaded rod 503 is fixedly connected to the bottom of the rotating seat 502. An adjusting sleeve 504 is threadedly connected to the outer side of the first threaded rod 503. The interior of the adjusting sleeve 504 is set with a trapezoidal thread, so that it can achieve a self-locking effect with the first threaded rod 503 and the second threaded rod 505 when the rotation stops, thus preventing slippage.
[0023] Furthermore, the lower end of the adjusting sleeve 504 is internally threaded with a second threaded rod 505. The end of the second threaded rod 505 away from the adjusting sleeve 504 is fixedly connected to a locking block 507 with an open bottom. The locking block 507 is engaged inside the fixed seat 509. The locking block 507 abuts against the crossbar inside the fixed seat 509 through the bottom opening. (When the adjusting sleeve 504 is rotated clockwise, the first threaded rod 503 and the second threaded rod 505 retract into the sleeve, shortening their length; when rotated counterclockwise, the threaded rods extend outward, increasing their length).
[0024] Furthermore, two sets of rotating handles 506 are fixedly connected to the middle of the outer side of the adjusting sleeve 504. The rotating handles 506 are used to drive the adjusting sleeve 504 to rotate, thereby realizing the change of the distance between the first threaded rod 503 and the second threaded rod 505.
[0025] Working principle: Based on the design location of the concrete component, a pre-embedded part 508 is pre-set in the ground. The pre-embedded part 508 is welded and fixed to the fixing seat 509. Then, the pre-embedded part 508 is embedded in the reserved groove in the ground and cement mortar is poured to fix it. The sealing strip 3 is placed at the splice joint between the first template 1 and the second template 2, so that the elastic sealing gasket 301 on the left side of the sealing strip 3 is aligned with the first sealing groove 401 on the splice edge 4 of the first template 1, and the elastic sealing gasket 301 on the right side is aligned with the first sealing groove 401 on the splice edge 4 of the second template 2. At the same time, it is ensured that the expansion waterstop strip 302 is aligned with the splice edge 4 on both sides. Align the second sealing groove 402 of the joint edge 4, push the first template 1 and the second template 2 to make the joint edge 4 tightly fit the sealing strip 3, and align the fixing holes 403 of the two sets of joint edges 4; insert the bolt 9 into the fixing hole 403 and tighten it with a wrench. During the tightening of the bolt 9, the elastic sealing gasket 301 is squeezed and deformed, filling the gap of the first sealing groove 401 to form a preliminary seal; the expansion waterstop strip 302 is simultaneously embedded into the second sealing groove 402 to complete the double sealing assembly at the joint. Adjust the position of the template so that the flexible pad 8 at the bottom of the first template 1 and the second template 2 is in close contact with the ground. Minor depressions in the ground can be naturally filled by the flexible pad 8, preventing gaps at the bottom and creating a fully sealed structure of "top splicing + bottom fitting". Hold the rotating handle 506 of the adjusting sleeve 504 and rotate the sleeve to adjust the support assembly to the appropriate length between the "connector 501" and the "fixed seat 509". Align the locking block 507 at the end of the second threaded rod 505 with the crossbar inside the fixed seat 509, and press down on the locking block 507 to insert the crossbar into the opening groove of the locking block 507, completing the fixation of the support assembly to the ground. At this point, the support assembly is in a taut state. The formwork is provided with continuous lateral support to resist the pressure of subsequent concrete pouring. Concrete is injected into the inside of the formwork through the pouring port. The elastic sealing gasket 301 is further squeezed and deformed under the lateral pressure of the concrete, and fits tightly against the inner wall of the first sealing groove 401, completely blocking the splice. During the pouring process, the water seeping out of the concrete comes into contact with the expansion waterstop strip 302 in the second sealing groove 402. After absorbing water, the expansion waterstop strip 302 expands and fills the tiny gaps in the second sealing groove 402, preventing the concrete slurry from seeping out. The double sealing works together to ensure that there is no obvious leakage of slurry during the pouring process.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A splicing structure for preventing grout leakage during concrete pouring in building construction, characterized in that: The system includes a first template (1), a second template (2), and a sealing strip (3). The sealing strip (3) is positioned between the first template (1) and the second template (2). Both the left and right ends of the front sides of the first template (1) and the second template (2) are fixedly connected to splicing edges (4). On the left and right sides of the end of the sealing strip (3) near the splicing edge (4), both sides are fixedly connected to an elastic sealing gasket (301) with a trapezoidal cross-section. On the left and right ends of the front side of the elastic sealing gasket (301), both sides of the sealing strip (3) are fixedly connected to an expansion sealing strip (…). 302), the splicing edge (4) is provided with a first sealing groove (401) adapted to the elastic sealing gasket (301) on the rear side of the end near the sealing pressure strip (3), and a second sealing groove (402) adapted to the expansion waterstop strip (302) is provided on the front side of the splicing edge (4) near the sealing pressure strip (3). The bottom of the first template (1) and the second template (2) are both fixedly connected with flexible pads (8) adapted to the ground. The front middle of the first template (1) and the second template (2) are both provided with anti-deformation support components (5).
2. The anti-leakage formwork splicing structure for concrete pouring in building construction according to claim 1, characterized in that: The front sides of the first template (1) and the second template (2) are fixedly connected with several vertically arranged first reinforcing ribs (6), and the front sides of the first template (1) and the second template (2) are fixedly connected with several horizontally arranged second reinforcing ribs (7).
3. The anti-leakage formwork splicing structure for concrete pouring in building construction according to claim 1, characterized in that: The front end of the splicing edge (4) is provided with several fixing holes (403), and two adjacent splicing edges (4) are fixedly connected by bolts (9), and the bolts (9) are set inside the two fixing holes (403).
4. A splicing structure for preventing grout leakage during concrete pouring in building construction, as described in any one of claims 1-3, is characterized in that: The anti-deformation support assembly (5) includes a connector (501) for connecting with the template and an embedded part (508) for connecting with the ground. A fixing seat (509) is fixedly connected above the embedded part (508).
5. The anti-leakage formwork splicing structure for concrete pouring in building construction according to claim 4, characterized in that: The front side of the connector (501) is rotatably connected to a rotating seat (502), the bottom of the rotating seat (502) is fixedly connected to a first threaded rod (503), and an adjusting sleeve (504) is threadedly connected to the outer side below the first threaded rod (503).
6. The anti-leakage formwork splicing structure for concrete pouring in building construction according to claim 5, characterized in that: The lower end of the adjusting sleeve (504) is internally threaded with a second threaded rod (505). The end of the second threaded rod (505) away from the adjusting sleeve (504) is fixedly connected with a locking block (507) with an open bottom. The locking block (507) is engaged inside the fixed seat (509).
7. The anti-leakage formwork splicing structure for concrete pouring in building construction according to claim 5, characterized in that: Two sets of rotating handles (506) are fixedly connected to the middle of the outer side of the adjusting sleeve (504).