Device for controlling abutted seam of cast-in-place concrete slab template

By designing a device to control the joints of cast-in-place concrete slab formwork, and using installation plates and formwork made of 304 steel plates, the problems of poor sealing and grout leakage caused by transparent tape filling were solved, thereby improving the flatness and aesthetics of the concrete floor slab.

CN223793875UActive Publication Date: 2026-01-13SHANGHAI ERSHIYE CONSTR CO LTD +1
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Patent Information

Application Number
CN202423291109.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-01-13
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

The main method for controlling the joints of cast-in-place concrete floor slab formwork is to fill them with transparent tape. However, this method is prone to poor sealing and grout leakage, which affects the construction quality and aesthetics.

Method used

Design a device for controlling the joints of cast-in-place concrete slab formwork. The installation plate and formwork are made of 304 steel plate and connected by fasteners to ensure tight joints and form a flat concrete pouring area.

Benefits of technology

It effectively prevents grout leakage, ensures the flatness and quality of the concrete surface, avoids defects such as honeycomb and voids, and improves construction quality and aesthetics.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a device for controlling abutted seams of cast-in-place concrete slab formworks. The device comprises supports which are oppositely arranged. The batten is arranged on the upper side of the support; the mounting plates are oppositely arranged between the two battens, and the upper surfaces of the mounting plates are flush with the upper surfaces of the battens; the formworks are erected on the upper sides of the battens, the formworks are detachably connected with the mounting plate, the two formworks abut against each other, the upper end faces of the two formworks are flush with each other, and a concrete pouring area is formed on the upper sides of the formworks. The utility model can solve the problems of poor sealing performance, poor durability and influence on sensory quality caused by poor sealing performance and poor durability due to the fact that the existing cast-in-place concrete floor template abutted seam control mode mainly adopts a transparent adhesive tape for filling and slurry leakage phenomena are easily caused at the abutted seam position.
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Description

Technical Field

[0001] This utility model relates to the field of building construction, specifically a device for controlling the joints of cast-in-place concrete slab formwork. Background Technology

[0002] In the field of building construction, cast-in-place concrete slabs are a common structural form, possessing advantages such as good integrity, high rigidity, and excellent seismic performance. Cast-in-place structures are widely used in frame structures, frame-shear wall structures, shear wall structures, and tall structures. As one of the main load-bearing components of a building, the construction quality of concrete floor slabs is particularly important. Controlling the formwork joints during the construction of cast-in-place concrete floor slabs is challenging, resulting in unsatisfactory finished product quality. Traditional methods of controlling formwork joints involve filling them with transparent tape. However, improper application or material quality issues can easily create gaps in the tape, leading to incomplete sealing and grout leakage during concrete pouring. This negatively impacts the construction quality of the concrete floor slab. Furthermore, the tape can leave marks or protrusions on the floor slab after application, affecting its flatness and aesthetics. Therefore, it is necessary to design a device to control the formwork joints of cast-in-place concrete slabs. Utility Model Content

[0003] This utility model provides a device for controlling the joints of cast-in-place concrete slab formwork. It can solve the problems of existing methods for controlling the joints of cast-in-place concrete slab formwork, which mainly use transparent tape for filling. These methods are prone to poor sealing at the joints, resulting in grout leakage, poor sealing performance, poor durability, and affecting the sensory quality.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a device for controlling the joints of cast-in-place concrete slab formwork, comprising: supports arranged opposite to each other; timbers arranged on the upper side of the supports; an installation plate arranged opposite to each other between the two timbers, the upper surface of the installation plate being flush with the upper surface of the timbers; and a template erected on the upper side of the timbers, the template being detachably connected to the installation plate, the two templates being abutted against each other, the upper surfaces of the two templates being flush, and the upper side of the template forming a concrete pouring area. This device can achieve tight joints, ensuring the flatness and overall quality of the concrete pouring area.

[0005] Preferably, the mounting plate has several first mounting holes at both ends along the height direction, and the two mounting plates are connected by first fasteners passing through the first mounting holes, which has a simple structure and stable connection.

[0006] Preferably, the upper end of the mounting plate is provided with a plurality of second mounting holes spaced apart along the length direction, which has a simple structure and is easy to process.

[0007] Preferably, the template is provided with a third mounting hole corresponding to the second mounting hole, and the template and the mounting plate are connected by a second fastener passing through the second mounting hole and the third mounting hole, which has a simple structure and stable connection.

[0008] Preferably, the mounting plate is L-shaped and made of 304 steel plate, which has good corrosion resistance and provides sufficient strength and rigidity.

[0009] As a preferred option, the template is made of 304 steel plate, which has good corrosion resistance and provides sufficient strength and rigidity.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] With its simple structure and convenient operation, this system ensures that there is no grout leakage at the formwork joints during concrete pouring. After pouring, the concrete surface will not exhibit undesirable aesthetic features such as honeycombing, voids, or exposed reinforcement. It solves the problem of existing methods for controlling formwork joints in cast-in-place concrete slabs, which primarily rely on transparent tape for filling, often resulting in inadequate sealing, grout leakage, poor sealing performance, low durability, and negatively impacted aesthetic quality. Attached Figure Description

[0012] Figure 1 This is the main view of the present invention.

[0013] Figure 2 This is a three-dimensional structural diagram of the mounting plate and template of this utility model in their installation state;

[0014] Figure 3 This is a three-dimensional structural diagram of the mounting plate of this utility model in its connected state.

[0015] Figure 4 This is a three-dimensional structural diagram of the mounting plate of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the template of this utility model.

[0017] Figure label:

[0018] 1. Support, 2. Timber, 3. Mounting plate, 31. First mounting hole, 32. Second mounting hole, 4. Template, 41. Third mounting hole, 5. Concrete pouring area, 6. First fastener, 7. Second fastener. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] like Figure 1-5As shown, this utility model addresses the problem that existing methods for controlling the joints of cast-in-place concrete slab formwork, which mainly rely on transparent tape for filling, often result in incomplete sealing at the joints, leading to grout leakage, poor sealing, poor durability, and negatively impacting the perceived quality. The present invention provides the following technical solution: a device for controlling the joints of cast-in-place concrete slab formwork, comprising: supports 1 arranged opposite each other; timber 2 positioned on the upper side of the supports 1; an mounting plate 3 positioned opposite each other between the two timber 2, with the upper surface of the mounting plate 3 flush with the upper surface of the timber 2; and a formwork 4 erected on the upper side of the timber 2. The formwork 4 is detachably connected to the mounting plate 3, with the two formwork 4 abutting each other and their upper surfaces flush. The upper side of the formwork 4 forms a concrete pouring area 5. This device ensures a tight seal, guaranteeing the flatness and overall quality of the concrete pouring area 5.

[0021] In this embodiment, as Figure 4 As shown, the mounting plate 3 has several first mounting holes 31 at both ends along the height direction. The two mounting plates 3 are connected by a first fastener 6 passing through the first mounting holes 31. The structure is simple and the connection is stable.

[0022] In this embodiment, as Figure 4 As shown, the upper end of the mounting plate 3 is provided with a plurality of second mounting holes 32 at intervals along the length direction, which has a simple structure and is easy to process.

[0023] In this embodiment, as Figure 5 As shown, the template 4 is provided with a third mounting hole 41 corresponding to the second mounting hole 32. The template 4 and the mounting plate 3 are connected by a second fastener 7 passing through the second mounting hole 32 and the third mounting hole 41. The structure is simple and the connection is stable.

[0024] In this embodiment, as Figure 4 As shown, the mounting plate 3 is L-shaped and made of 304 steel plate, which has good corrosion resistance and provides sufficient strength and rigidity.

[0025] In this embodiment, as Figure 5 As shown, template 4 is made of 304 steel plate, which has good corrosion resistance and provides sufficient strength and rigidity.

[0026] In this embodiment, as Figure 1 As shown, first, place the timber 2 on the support 1 and ensure it is stable. Then, connect the two mounting plates 3 with the first fastener 6, and install the template 4 on the mounting plate 3 with the second fastener 7, ensuring that the two templates 4 are aligned and their upper surfaces are flush. Place the mounting plate 3 between the two timber 2, and the template 4 overlaps the timber 2. Pour concrete into the concrete pouring area 5 formed by the template 4.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A device for controlling the joint of a formwork for a cast-in-place concrete slab, characterized in that, The utility model relates to a kind of concrete pouring formwork, including: Oppositely arranged support (1); Wood square (2) is arranged on the upper side of the support (1); Mounting plate (3) is oppositely arranged between two wood squares (2), and the upper surface of the mounting plate (3) is flush with the upper surface of the wood square (2); Formwork (4) is set up on the upper side of the wood square (2), and the formwork (4) is detachably connected with mounting plate (3), two formworks (4) are top, and the upper end surface of two formworks (4) is flush, and the upper side of the formwork (4) forms concrete pouring area (5).

2. A device for controlling the joint of a cast-in-place concrete slab formwork according to claim 1, characterized in that: The two ends of the mounting plate (3) are provided with a plurality of first mounting holes (31) in the height direction, and the two mounting plates (3) are connected by first fasteners (6) passing through the first mounting holes (31).

3. A device for controlling the joint of a cast-in-place concrete slab formwork according to claim 1, characterized in that: The upper end of the mounting plate (3) is provided with a plurality of second mounting holes (32) along the length direction.

4. A device for controlling the joint of a cast-in-place concrete slab formwork according to claim 3, characterized in that: The formwork (4) is provided with a third mounting hole (41) corresponding to the second mounting hole (32), and the formwork (4) and the mounting plate (3) are connected by a second fastener (7) passing through the second mounting hole (32) and the third mounting hole (41).

5. A device for controlling the joint of a cast-in-place concrete slab form according to claim 1, characterized in that: The mounting plate (3) is L-shaped and made of 304 steel plate.

6. A device for controlling the joint of a cast-in-place concrete slab form according to claim 1, characterized in that: The formwork (4) is made of 304 steel plate.