Template for preventing slurry leakage at concrete joint

Abstract

The utility model belongs to the technical field of concrete formworks, and discloses a formwork capable of preventing slurry leakage at a concrete joint, the formwork is detachably arranged on the concrete joint and covers the two sides of a steel reinforcement framework, a plurality of fixing steel bars are arranged on the concrete joint, the formwork comprises a supporting plate, a matchboard and a leakage-proof piece, a plurality of fixing holes are formed in the supporting plate, and the fixing steel bars are arranged in the matchboard. The fixing holes are detachably connected with the fixing steel bars and used for fixing the supporting plate to a preset position. The tongued and grooved board is arranged at the end, away from the ground, of the supporting plate and used for forming a tongue and groove after pouring; the anti-leakage piece is arranged at the end, away from the matchboard, of the supporting plate and used for connecting the supporting plate with concrete in a sealed mode. Concrete joints and rabbets are formed by arranging the tongued and grooved boards, the formwork is convenient and firm to install, meanwhile, the leakage-proof pieces are used for sealing, the phenomena of formwork expansion, grout leakage and the like caused by the fact that the bottom of the supporting plate is difficult to fix are avoided, grout leakage at a construction joint is effectively prevented, the quality defect of the concrete root is reduced, and the safety and reliability of the structure are improved.

Description

Technical Field

[0001] This utility model belongs to the field of concrete formwork technology, specifically relating to a formwork that prevents grout leakage at concrete joints. Background Technology

[0002] With the increasing number of high-rise residential building projects, issues such as root rot and grout leakage are prone to occur at the junctions of upper and lower walls and columns, resulting in poor appearance quality after formwork removal. Ensuring the forming quality of shear wall structures, especially the quality of concrete joints, makes the selection of construction methods and processes crucial. Existing methods mostly involve pasting a layer of adhesive tape onto the concrete surface at the joint, with the upper formwork lowered a certain distance and crossing the tape. The combined effect of the upper steel pipe reinforcement system and the adhesive tape allows for effective reinforcement.

[0003] For example, in the prior art, Chinese utility model patent CN213330028U discloses a grout-proof structure for concrete joints between walls and columns. Specifically, it discloses a pre-cast lower wall column and a post-cast upper wall column. Foam tape is provided at the junction of the lower and upper wall columns. Multiple downward-facing threaded rods are pre-installed in a straight line at the top of the lower wall column. A template is provided around the upper wall column, with its inner side fitting against the upper wall column and a keel provided on its outer side. The lower end of the template is lowered to the lower wall column and secured by the keel and the downward-facing threaded rods. An upper threaded rod is provided on the upper wall column, and the upper threaded rod is secured by the keel and the template. This utility model, through the pre-installed downward-facing threaded rods and the template used during post-casting, ensures the reinforcement of the template during post-casting, preventing misalignment and displacement, ensuring the construction period, and improving construction quality.

[0004] However, using double-sided adhesive strips for sealing is not an effective way to prevent grout leakage during the pouring of the upper layer of concrete. This results in the loss of concrete cementitious materials, leading to quality defects such as honeycomb, pitting, and exposed reinforcement at the concrete root, further reducing the structural safety and reliability. Summary of the Invention

[0005] Based on this, this application provides a template to prevent grout leakage at concrete joints, in order to solve the problem that using double-sided adhesive strips for sealing is not an effective way to prevent grout leakage during the pouring of the upper layer of concrete, which leads to the loss of concrete cementitious materials and causes quality defects such as honeycomb, pitting, and exposed reinforcement at the concrete root, further reducing the structural safety and reliability.

[0006] The technical solution to the above-mentioned technical problems in this application is as follows:

[0007] A formwork for preventing grout leakage at concrete joints is detachably installed on the concrete joint and covers both sides of the reinforcing steel frame. The concrete joint is provided with several fixed reinforcing bars, including:

[0008] The support plate, tongue and groove plate, and leak-proof component are provided. The support plate is provided with a plurality of fixing holes, which are detachably connected to the fixing steel bars for fixing the support plate in a preset position. The tongue and groove plate is provided at the end of the support plate away from the ground for forming a tongue and groove joint after pouring. The leak-proof component is provided at the end of the support plate away from the tongue and groove plate for sealing the connection between the support plate and the concrete joint.

[0009] Preferably, the tongue and groove plate has a rectangular cross-section and is detachably connected to the support plate.

[0010] Preferably, the tongue and groove board has a cross-section of a right-angled trapezoid, and the tongue and groove board is detachably connected to the support plate.

[0011] Preferably, the support plate is provided with a connector for detachably connecting two adjacent support plates.

[0012] Preferably, the connector includes a connecting plate and a fixing groove. One end of the connecting plate is provided with a through hole, and the fixing groove is provided at the end of the connecting plate away from the through hole. A threaded rod is provided on the fixing groove, and the threaded rod can move up and down in the vertical direction for detachably connecting adjacent connecting plates.

[0013] Preferably, one end of the connecting plate with the through hole extends out of the support plate and into the fixing groove on the adjacent support plate.

[0014] Preferably, the leak-proof component includes a positioning groove and a double-sided adhesive strip. The positioning groove is located at the end of the support plate away from the tongue and groove plate, and the double-sided adhesive strip is located inside the positioning groove, with the thickness of the double-sided adhesive strip being greater than the depth of the positioning groove.

[0015] Preferably, the support plate is provided with a plurality of reinforcing plates, which are located on the side of the support plate away from the steel reinforcement frame, for reinforcing the support plate.

[0016] The technical solution adopted in this application can achieve the following beneficial effects:

[0017] 1. By setting up tongue and groove plates to form concrete joints and tongues, the installation of lower formwork and concrete pouring after the initial pouring is convenient and secure. The concrete first falls onto the tongue and groove formed by the tongue and groove plates, and leak-proof components are used for sealing. This avoids difficulties in fixing the bottom of the support plate, which can lead to bulging and grout leakage. It effectively prevents grout leakage at construction joints of vertical concrete structural members, reduces quality defects such as honeycomb, pitting, and exposed reinforcement at the roots of vertical concrete structural members, and greatly improves the safety and reliability of the structure.

[0018] 2. By using the method of upper hanging (fixing the support plate to both sides of the steel reinforcement cage by passing the connecting steel bars through the fixing holes) and lower fixing (fixing steel bars pre-reserved on the concrete joint pass through the fixing holes of the support plate to fix it at the concrete joint), the reinforcement measures are strengthened. The operation is simple and convenient, and the safety and reliability are improved. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the formwork used in this application to prevent grout leakage at concrete joints.

[0020] Figure 2 This is a partial schematic diagram of the formwork used in this application to prevent grout leakage at concrete joints. Figure 1 .

[0021] Figure 3 This is a partial schematic diagram of the formwork used in this application to prevent grout leakage at concrete joints. Figure 2 .

[0022] Figure 4 This is a partial schematic diagram of the formwork used in this application to prevent grout leakage at concrete joints. Figure 3 .

[0023] Figure 5 This is a partial schematic diagram of the formwork used in this application to prevent grout leakage at concrete joints. Figure 4 .

[0024] In the diagram: 10 concrete joint, 11 tongue and groove joint, 12 fixed reinforcing bar, 13 reinforcing bar cage, 100 support plate, 110 fixing hole, 120 connector, 121 connecting plate, 122 fixing groove, 130 reinforcing plate, 200 tongue and groove plate, 310 positioning groove, 320 double-sided adhesive strip. Detailed Implementation

[0025] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0026] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] 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 application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figures 1 to 5 This application provides a template for preventing grout leakage at concrete joints. The template is detachably mounted on a concrete joint 10 and covers both sides of a reinforcing steel frame 13. The concrete joint 10 is provided with several fixing reinforcing bars 12, including a support plate 100, a tongue-and-groove plate 200, and a leak-proof component. The support plate 100 has several fixing holes 110, which are detachably connected to the fixing reinforcing bars 12 to fix the support plate 100 in a preset position. The tongue-and-groove plate 200 is located at the end of the support plate 100 away from the ground, forming a tongue-and-groove joint 11 after pouring. The leak-proof component is located at the end of the support plate 100 away from the tongue-and-groove plate 200, sealing the connection between the support plate 100 and the concrete joint 10.

[0029] Specifically, when constructing high-rise buildings such as residential buildings, the construction industry usually pours concrete layer by layer from bottom to top. Depending on the floor height or actual working conditions, concrete joints 10 need to be reserved to facilitate the subsequent fixing of the formwork. During pouring, in order to fix the formwork, reserved holes or additional fixing steel bars 12 are usually used to fix the formwork set on both sides of the steel reinforcement cage 13.

[0030] The support plate 100 uses, but is not limited to, bamboo plywood, wood boards, and other commonly used formwork materials. The support plate 100 is provided with several rows of fixing holes 110. The distance between adjacent fixing holes 110 is set according to the distance between adjacent fixing steel bars 12 and complies with relevant building industry standards. The tongue and groove plate 200 is made of the same material as the formwork. The leak-proof component uses, but is not limited to, double-sided sponge strips. The tongue and groove plate 200 is set at the end of the support plate 100 away from the ground (at this time, the support plate 100 is vertically supported on the steel reinforcement skeleton 13), and the leak-proof component is set at the other end of the support plate 100 away from the tongue and groove plate 200 (the end closer to the ground).

[0031] Further, clean the concrete joint 10, install the support plate 100 on the concrete joint 10, and the fixing holes 110 of the support plate 100 are penetrated by the fixing steel bars 12 on the concrete joint 10 and fixed with steel pipe clamps; at the same time, the fixing holes 110 on the two opposite support plates 100 are detachably set on both sides of the steel cage 13 through the connecting steel bars penetrating the support plates 100; at this time, one side of the leak-proof part is close to the support plate 100, and the other side is close to the end of the concrete joint 10 away from the ground. The fixing holes 110 located below the leak-proof part are penetrated and fixed by the fixing steel bars 12 on the concrete joint 10. At the same time, the tongue and groove plate 200 is located between the steel cage 13 and the support plate 100. After fixing, concrete can be poured.

[0032] The technical solution of this application, which uses a formwork to prevent grout leakage at 10 concrete joints, can achieve the following beneficial effects:

[0033] 1. By setting the tongue and groove plate 200 to form the concrete joint 10 and the tongue and groove 11, the installation of the lower support plate 100 and the concrete pouring after the concrete is poured are convenient and firm. The concrete falls on the tongue and groove 11 formed by the tongue and groove plate 200 first, and the leak-proof parts are used for sealing. This avoids the difficulty of fixing the bottom of the support plate 100, which may lead to bulging and grout leakage. It effectively prevents grout leakage at the construction joint of the vertical concrete structural members, reduces quality defects such as honeycomb, pitting, and exposed reinforcement at the root of the vertical concrete structural members, and greatly improves the safety and reliability of the structure.

[0034] 2. The support plate 100 is reinforced by using an upper hanging method (fixing the support plate 100 to both sides of the steel reinforcement cage 13 by passing the connecting steel bars through the fixing holes 110) and a lower fixing method (fixing the support plate 100 to both sides by passing the fixing holes 110 of the support plate 100 by using the fixing steel bars 12 pre-reserved on the concrete joint 10). This method is simple and convenient to operate and improves its safety and reliability.

[0035] Please see Figure 2In one embodiment of this application, the tongue and groove plate 200 has a rectangular cross-section and is detachably connected to the support plate 100. The tongue and groove plate 200 is a cuboid or cube-shaped piece of wood. Several nuts are equidistantly embedded along the length of the tongue and groove plate 200. Correspondingly, several round holes are provided at corresponding positions on the support plate 100, with the holes corresponding to the positions of the nuts. Bolts pass through the support plate 100 and engage with the nuts, allowing the tongue and groove plate 200 to be detachably connected to the support plate 100. When the bolts are long, a nut can be added to the side of the support plate 100 away from the tongue and groove plate 200. For convenience and economy, long nails can also be used to fix the tongue and groove plate 200 to the support plate 100. Disassembly and replacement are more convenient by embedding nuts in the tongue and groove plate 200 according to the reserved tongue and groove height 11. Installation is also more convenient by using long nails for fixation.

[0036] Please see Figure 3 In another embodiment of this application, the tongue and groove plate 200 has a right-angled trapezoidal cross-section and is detachably connected to the support plate 100. The lower end face (the end closest to the ground) of the tongue and groove plate 200 is chamfered, with a chamfer angle of 1° to 89°, preferably 30°, to facilitate the removal of the tongue and groove plate 200. The tongue and groove plate 200 makes the cross-section of the tongue and groove 11 forming the concrete joint 10 triangular. When the support plate 100 is used for subsequent installation, the anti-leakage component is set at the end of the tongue and groove 11 away from the ground and is clamped by the support plate 100 to make it fit tightly. When the concrete is poured, the concrete enters the chamfer, and the grout in the concrete flows away from the anti-leakage component along the slope of the chamfer, thereby reducing the probability of grout leakage at the construction joint and further improving safety and stability.

[0037] Based on the above solution, a connector 120 is provided on the support plate 100, which is used to detachably connect two adjacent support plates 100. The connector 120 includes a connecting plate 121 and a fixing groove 122. One end of the connecting plate 121 is provided with a through hole, and the fixing groove 122 is provided at the end of the connecting plate 121 away from the through hole. A threaded rod is provided on the fixing groove 122, which can move up and down in the vertical direction for detachably connecting adjacent connecting plates 121. The end of the connecting plate 121 with the through hole extends out of the support plate 100 and into the fixing groove 122 on the adjacent support plate 100.

[0038] Specifically, the connecting plate 121 is made of rectangular square timber or square tubing. One end of the connecting plate 121 has a through hole, and at least two connecting plates 121 are provided parallel to the horizontal plane. The fixing groove 122 uses an iron C-shaped frame, and at least one positioning hole is provided on the two opposite side walls of the fixing groove 122 in the vertical direction. The positioning hole corresponds to the through hole. The end of the connecting plate 121 on the two adjacent support plates 100 with the through hole extends into the fixing groove 122. Bolts are used to pass through the positioning hole and the through hole, and nuts are used for fixing. In the preferred embodiment, the fixing grooves 122 of the two adjacent connecting plates 121 are provided in opposite directions, thereby increasing their ultimate bearing capacity. By setting the connecting piece 120, the ultimate bearing capacity of the support plate 100 is increased, and the installation of the adjacent support plates 100 is made simpler and more convenient.

[0039] In a preferred embodiment of this application, the leak-proof component includes a positioning groove 310 and a double-sided adhesive strip 320. The positioning groove 310 is disposed at one end of the support plate 100 away from the tongue and groove plate 200, and the double-sided adhesive strip 320 is disposed within the positioning groove 310, with the thickness of the double-sided adhesive strip 320 being greater than the depth of the positioning groove 310.

[0040] The positioning groove 310 is located at the end of the support plate 100 away from the tongue and groove plate 200, and at the end of the tongue and groove 11 away from the ground. The size of the positioning groove 310 is the same as the size of the double-sided adhesive strip 320. Before installing the support plate 100, the double-sided adhesive strip 320 is first attached to the positioning groove 310. Then, when closing the mold, the side of the double-sided adhesive strip 320 away from the bottom of the positioning groove 310 is tightly attached to the top of the tongue and groove 11. By setting the positioning groove 310, the installation of the double-sided adhesive strip 320 is more convenient and straighter and more aesthetically pleasing.

[0041] Furthermore, a plurality of reinforcing plates 130 are provided on the support plate 100, and the reinforcing plates 130 are provided on the side of the support plate 100 away from the steel reinforcement cage 13, for reinforcing the support plate 100.

[0042] The reinforcing plate 130 is arranged in a direction perpendicular to the support direction of the connecting plate 121. The connecting plate 121 is used for two adjacent supporting plates 100. One end of the reinforcing plate 130 extends out of the supporting plate 100 and contacts the poured concrete wall column, making the support of the supporting plate 100 more stable and firm.

[0043] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A formwork for preventing grout leakage at concrete joints, detachably mounted on the concrete joint and covering both sides of a reinforcing steel frame, wherein the concrete joint is provided with a plurality of fixed reinforcing bars, characterized in that, include: A support plate is provided with a plurality of fixing holes, which are detachably connected to the fixing steel bars for fixing the support plate in a preset position; Tongue and groove plate, wherein the tongue and groove plate is disposed at the end of the support plate away from the ground, for forming a tongue and groove after casting; as well as A leak-proof component is disposed at the end of the support plate away from the tongue and groove plate, and is used to seal the connection between the support plate and the concrete joint.

2. The formwork for preventing bleeding at the concrete joint according to claim 1, wherein The tongue and groove plate has a rectangular cross-section and is detachably connected to the support plate.

3. The formwork for preventing bleeding at the concrete joint according to claim 1, wherein The tongue and groove board has a right-angled trapezoidal cross-section and is detachably connected to the support plate.

4. The formwork for preventing bleeding at the concrete joint according to claim 1, wherein The support plate is provided with a connector for detachably connecting two adjacent support plates.

5. The formwork for preventing bleeding at the concrete joint according to claim 4, wherein The connector includes a connecting plate and a fixing groove. One end of the connecting plate is provided with a through hole, and the fixing groove is provided at the end of the connecting plate away from the through hole. A threaded rod is provided on the fixing groove, and the threaded rod can move up and down in the vertical direction for detachably connecting adjacent connecting plates.

6. The formwork for preventing bleeding at the concrete joint according to claim 5, wherein One end of the connecting plate with the through hole extends out of the support plate and into the fixing groove on the adjacent support plate.

7. The formwork for preventing bleeding at the concrete joint according to claim 1, wherein The leak-proof component includes a positioning groove and a double-sided adhesive strip. The positioning groove is located at the end of the support plate away from the tongue and groove plate. The double-sided adhesive strip is located inside the positioning groove, and the thickness of the double-sided adhesive strip is greater than the depth of the positioning groove.

8. The formwork for preventing bleeding at the concrete joint according to claim 1, wherein The support plate is provided with a plurality of reinforcing plates, which are located on the side of the support plate away from the steel reinforcement cage, and are used to reinforce the support plate.

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