Connecting piece special for assembly type steel bar formwork floor slab combined part

Abstract

The utility model discloses a special connecting piece for an assembly type steel bar formwork floor slab combined part, which belongs to the technical field of building structures and comprises a bottom plate and side plates symmetrically arranged on two sides of the bottom plate, and the two side plates are perpendicular to the bottom plate. The upper portions of the two ends of each side plate protrude, the middle portions of the two ends of each side plate are recessed, and the two ends of each side plate extend upwards to form fixing hooks. The two side plates and the bottom plate of the connecting piece are integrally formed; the side plate height is consistent with the floor component protection layer thickness; the bottom plate of the connecting piece is fixed through a self-tapping screw; the fixing hooks are opened towards the inner sides; the middle of the side plate is higher than the inner side of the fixing hook. A series of problems of inaccurate protection layer control, insufficient structural stability, insufficient connecting piece strength, large template installation error, poor field operation environment, slow construction progress and the like are solved. The method has the advantages of good floor structure stability and high construction efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to building structure technical field, concretely relates to a special connecting piece for fabricated reinforced formwork floor assembly component. BACKGROUND

[0002] In the current construction field, two mainstream floor construction technologies - traditional cast-in-place method and modern fabricated technology, are facing several technical challenges and limitations, which seriously affect the construction efficiency, structural safety and cost control, which is specifically shown in the following aspects: The traditional construction technology relies on the manual placement of light weight concrete cushion block by on-site workers to set the thickness of the protective layer between the steel bar and the future poured concrete. This process not only has high labor intensity, but also due to the limitation of the strength of the cushion block material, it is often difficult to ensure the accuracy and stability of the protective layer. In addition, the on-site binding operation of the steel bar, although it is a conventional step of construction, due to the uncertainty of human operation, it leads to poor overall stability of the structure and is prone to looseness.

[0003] Turning to the fabricated technology, especially the application of the demoulding-free formwork system, although it has made a step forward in improving construction efficiency and environmental protection, it still faces challenges. This kind of system usually uses C-shaped steel as the key component for connecting the formwork and the steel bar, which is fixed by welding. However, practice shows that the strength of ordinary C-shaped steel connecting piece is not enough to meet the high standard construction requirements, and it has exposed the problem of easy falling off in many experiments and actual projects. The welding process not only causes physical damage to the steel bar, affecting its diameter integrity, but also may cause "wound" phenomenon, i.e. the performance of the steel bar in the welding heat affected zone is decreased, which further weakens the reliability of the structure. In addition, there is a large error in the installation process of the traditional formwork and the existing fabricated formwork, which not only affects the accuracy of the building, but also has a bad influence on the construction safety and civilization. The disorderly and noisy construction site and other factors pose a threat to the on-site working environment. All these factors cumulatively lead to significant delay of the construction site progress.

[0004] In summary, whether it is the traditional construction method or the increasingly popular fabricated construction technology, it is urgent to solve a series of problems such as inaccurate protective layer control, insufficient structural stability, insufficient strength of connecting piece, large installation error of formwork, poor on-site working environment and slow construction progress, in order to promote the technological innovation and efficiency improvement of the construction industry.

[0005] Therefore, there is an urgent need for a special connecting piece for fabricated reinforced formwork floor assembly component to realize the dual breakthrough of high efficiency and high quality construction. UTILITY MODEL CONTENT

[0006] To solve the problems of poor construction quality and slow progress caused by the lack of protection layer precision, poor structural stability and insufficient strength of the connecting piece in the prior art, the utility model provides a special connecting piece for an assembled steel bar formwork floor slab combination component.

[0007] In order to achieve the above object, the utility model provides the following technical scheme.

[0008] According to the first aspect of the utility model, a special connecting piece for an assembled steel bar formwork floor slab combination component is provided, the connecting piece comprises a bottom plate and side plates symmetrically arranged on both sides of the bottom plate, and the two side plates are perpendicular to the bottom plate.

[0009] Further, the side plates are provided with protrusions at the upper portions of both ends and recesses in the middle portions, and the two ends of the side plates extend upwards to form fixing hooks.

[0010] Further, the two side plates and the bottom plate of the connecting piece are integrally formed.

[0011] Further, the height of the side plate is consistent with the thickness of the protection layer of the floor component.

[0012] Further, the bottom plate of the connecting piece is fixed by self-tapping screws.

[0013] Further, the fixing hooks are all inwardly open.

[0014] Further, the middle portion of the side plate is higher than the inner side of the fixing hook.

[0015] Further, the connecting piece is made of rigid material.

[0016] The utility model has the following advantages:

[0017] 1. The special connecting piece is designed in an integrated manner, the bottom plate and the side plates are perpendicular and symmetrically arranged on both sides, which ensures the accurate control of the steel bar protection layer and maintains high-standard construction precision. The design of the side plates with recesses in the middle portions and protrusions at both ends and the formation of the fixing hooks not only ensure the overall stability of the steel bar after binding, but also effectively prevent the steel bar from falling off through high-strength connection with the steel bar, thereby ensuring the long-term stability and durability of the floor structure.

[0018] 2. The connecting piece formed in an integrated manner and fixed by self-tapping screws simplifies the installation process, realizes zero-error component installation, significantly improves the construction speed and overcomes the problem of slow on-site construction progress. At the same time, the design reduces the complexity of on-site operation, improves the level of on-site safe and civilized construction and is conducive to building a more efficient and clean construction environment.

[0019] 3. The connecting piece of rigid material enhances the overall rigidity of the structure and improves the safety of operation. The inward opening of the fixing hook further ensures the safety and stability of the installation operation. In addition, the technical scheme precisely matches the thickness of the protective layer and the connecting piece design, reduces material waste, improves resource utilization efficiency, and comprehensively reflects the significant advantages in ensuring construction safety, improving engineering quality, and accelerating construction progress. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0021] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.

[0022] Figure 1 The connecting piece front view provided by the present application;

[0023] Figure 2 The connecting piece side view provided by the present application;

[0024] Figure 3 The connecting piece top view provided by the present application;

[0025] In the figure: 1. Connecting piece; 2. Bottom plate; 3. Side plate; 4. Fixed hook. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] The present application provides a special connecting piece 1 for prefabricated steel formwork floor slab combination components, Figure 2As shown, the connecting piece 1 includes a bottom plate 2 and side plates 3 symmetrically arranged on both sides of the bottom plate 2, and the two side plates 3 are integrally formed with the bottom plate 2. The three parts are integrally formed by advanced casting or injection molding process, which ensures the structural strength and stability of the connecting piece as a whole. Such integrated design not only improves the durability of the connecting piece, but also simplifies the on-site installation steps and reduces potential errors caused by splicing.

[0028] In actual application, each floor slab assembly is usually provided with a plurality of such special connecting pieces 1, which are distributed under the steel bar truss according to a precise layout, and through the joint action of a plurality of special connecting pieces 1 with the same steel bar center, the steel bar can be firmly fixed in the groove to form a stable support network. The side plates 3 of each connecting piece are carefully designed with grooves that accurately align with the steel bar truss, and the groove depth matches the steel bar diameter to ensure that the steel bar can be closely fitted. Even in the case of slight size deviation in steel bar processing, through the cooperative action of multiple connecting pieces, accurate positioning and locking of the steel bar truss can be achieved, ensuring the stability of the steel bar before and after pouring concrete, and effectively avoiding the risk of displacement or falling due to insecure single-point fixation.

[0029] Specifically, as shown in Figure 1 The side plates 3 are designed as a double-curved surface with the upper ends protruding outward and the middle part recessed inward. The upper ends of the side plates 3 protrude outward to form a reinforcing structure, and the middle part is recessed inward. Such design not only enhances the mechanical properties of the connecting piece, but also gives it a unique fixing mechanism.

[0030] The protruding parts at both ends of the side plates 3 naturally transition into fixing hooks 4. The fixing hooks 4 not only tightly fix the steel bar to prevent displacement during construction, but also are designed with a hook-shaped structure that fits the surface of the concrete, ensuring the firm combination between the connecting piece and the concrete and enhancing the stability of the overall structure. The lower side of the fixing hook 4 is designed as a recessed shape, which can perfectly fit the contour of the lower part of the steel bar truss. The grooves on both sides are precisely calculated to accurately match the lower steel bar of the steel bar truss, ensuring that multiple connecting pieces 1 work together to evenly distribute pressure and fix the steel bar truss more securely, preventing any potential sliding or loosening, thereby improving the load-bearing capacity and durability of the entire floor slab.

[0031] As shown in Figure 3As shown, the lower connector 1 bottom plate 2 is in a flat state, which is closely attached to the lower end of the steel bar to ensure the thickness of the steel bar protective layer, and the lower end of the flat plate is attached to the (removable) concrete formwork with waterproof performance. It ensures close contact with the lower end of the steel bar, and by precisely controlling the installation depth of the self-tapping screw, the thickness of the steel bar protective layer can be strictly guaranteed, which is the key to ensuring the durability of the concrete structure and the rust prevention of the steel bar. At the same time, the flat edge of the bottom plate 2 and the removable concrete formwork with waterproof performance realize seamless attachment, which not only simplifies the installation process of the formwork, but also effectively improves the waterproof performance by reducing the gap, preventing water penetration and prolonging the service life of the building.

[0032] In summary, this fine design of the connector 1 not only considers the rationality of mechanics and the convenience of installation, but also takes into account the key requirements in actual use such as waterproofing and moisture-proofing, which is one of the key technologies to improve the construction efficiency and structural safety of prefabricated buildings.

[0033] Among them, the two side plates 3 of the connector 1 and the bottom plate 2 form a groove; the two side plates 3 and the bottom plate 2 are accurately aligned and together form a precise groove structure. The design of this groove is not only to accommodate the steel bar, but more importantly, its size is precisely calculated to ensure that the height of the side plate 3 is exactly the same as the thickness of the steel bar protective layer specified in the floor design. In this way, when the steel bar is placed in this specially designed groove, not only can the ideal distance between the steel bar and the concrete be ensured, that is, the thickness of the steel bar protective layer is strictly controlled, but also a rigid connection relationship is formed between the steel bar and the connector 1 through the physical constraint of the groove. This connection method is not only stable and reliable, but also can effectively prevent the displacement of the steel bar during the pouring of concrete, thereby ensuring the overall quality and long-term durability of the floor structure.

[0034] The height of the side plate 3 is consistent with the size of the protective layer of the floor component; the steel bar is clamped in the groove to form a rigid connection with the connector 1, ensuring the thickness of the floor steel bar protective layer. This design takes into account the convenience and efficiency of construction, and the shape and size of the groove perfectly match the commonly used specifications of steel bars, making the steel bar installation operation simple and fast without the need for complex adjustment process. At the same time, since the steel bar and the connector 1 form a rigid connection, compared with the traditional flexible connection method, it can more effectively transfer the load and enhance the overall stability of the floor, especially in the case of earthquakes or other extreme load conditions, this design can better highlight its advantages in ensuring structural safety.

[0035] The bottom plate 2 of the connecting piece 1 can be connected with the concrete formwork through self-drilling self-tapping screws. The connection between the bottom plate 2 of the connecting piece 1 and the concrete formwork adopts high-efficiency self-drilling self-tapping screws, which can directly drill holes on the surface of the concrete formwork and be screwed in, greatly simplifying the installation steps and improving the construction efficiency. The use of self-drilling self-tapping screws not only ensures the rapidity and stability of the connection, but also reduces the damage to the surface of the formwork, which is beneficial to maintaining the integrity of the waterproof performance. In this way, the connecting piece 1 and the concrete formwork form a tight and reliable interface combination, effectively preventing water penetration and prolonging the service life of the building structure.

[0036] In practical application, the connecting piece 1 as a key component plays a role of a bridge, tightly connecting the high-strength steel bar truss and the demoulding concrete formwork together, and constructing a highly integrated and stable floor system. This system is standardized produced in the factory through precise mechanical processing and strict quality control process, so that the dimensional error during on-site installation is minimized, the precise butt joint between the floor components and the tightness of the overall structure are ensured. In addition, this factory prefabricated mode not only improves the production efficiency and quality control level of the building components, but also significantly reduces the complexity and time cost of on-site construction, reduces the uncertainty of manual operation, and ensures the efficiency and accuracy of the construction process. In this way, each floor component has been strictly checked for size and quality before installation, ensuring smooth installation on site, reducing rework caused by size mismatch or installation errors, and further improving the economy and construction efficiency of the entire building project.

[0037] The use process of the embodiment of the utility model is as follows:

[0038] 1. Structural design: the connecting piece 1 adopts a special shape of protruding at the upper part of both ends and recessed in the middle part. The upper protruding part is used for fixing the steel bar and increasing the anchoring effect with the concrete; the middle recess is designed to accurately match the size of the lower part of the steel bar truss, ensuring the stable positioning of the steel bar; the flat design of the bottom plate 2 facilitates smooth fitting with the concrete formwork.

[0039] 2. Steel bar fixing and protection layer control: the height of the middle side plate 3, i.e. the depth of the recess of the connecting piece 1, is accurately set to the required size of the floor protection layer. After the steel bar is placed in the recess, the constant protection layer thickness between the steel bar and the concrete is ensured through rigid connection, avoiding the corrosion problem of the steel bar and ensuring the durability of the structure.

[0040] 3. Overall stability and connection strength: Multiple such connectors 1 are provided on a single floor component, which collectively act on the steel bar truss. Even if there are manufacturing errors, the overall stability of the steel bar frame can be enhanced through the cooperative fixation of multiple points, avoiding the instability of traditional binding methods. The firm overall formed between the connector 1, steel bar, and formwork effectively improves the connection strength and avoids the risk of falling during construction or concrete pouring.

[0041] 4. Combination of formwork and connector 1: The lower part is tightly connected with the waterproof concrete formwork through self-drilling and self-tapping screws, simplifying the installation process while ensuring the waterproof performance between the formwork and the floor component, improving the construction quality.

[0042] 5. Standardized production and size control: Through factory-based and standardized production, the size of each connector 1 is ensured to be accurate to the millimeter level, significantly reducing the error of on-site installation and improving construction efficiency and component interchangeability.

[0043] 6. Simplified construction process and improved efficiency: The use of this connector 1 replaces the use of traditional concrete pads, reducing the steps and materials of on-site construction, improving on-site safety and civilized construction level, while accelerating the construction progress and reducing costs.

[0044] In summary, this connector 1, through its unique structural design, standardized production, and efficient installation method, effectively solves multiple problems in the construction of prefabricated steel bar formwork floor, including improving the quality of the steel bar protection layer, enhancing the stability of the structure, accelerating the construction progress, and improving the level of construction safety and civilization.

[0045] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model are within the scope of protection required by the utility model.

Claims

1. A special connector for prefabricated reinforced concrete formwork floor slab assembly components, characterized in that, The connector (1) includes a base plate (2) and side plates (3) symmetrically arranged on both sides of the base plate (2), and the two side plates (3) are perpendicular to the base plate (2); The side plate (3) is designed with both ends protruding at the top and recessed in the middle, and both ends of the side plate (3) extend upward to form fixing hooks (4), and the fixing hooks (4) all open inward.

2. The special connector for prefabricated reinforced concrete formwork floor slab assembly as described in claim 1, characterized in that, The connector (1) is integrally formed with the two side plates (3) and the bottom plate (2).

3. The special connector for prefabricated reinforced concrete formwork floor slab assembly as described in claim 1, characterized in that, The height of the side plate (3) is consistent with the thickness of the protective layer of the floor slab component.

4. The special connector for prefabricated reinforced concrete formwork floor slab assembly components as described in claim 1, characterized in that, The base plate (2) of the connector (1) is fixed by self-tapping screws.

5. The special connector for prefabricated reinforced concrete formwork floor slab assembly as described in claim 1, characterized in that, The height of the middle part of the side plate (3) is higher than the height of the inner side of the fixing hook (4).

6. The special connector for prefabricated reinforced concrete formwork floor slab assembly as described in claim 1, characterized in that, The connector (1) is made of rigid material.

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