A beam-column joint shaping reusable form

Abstract

The application relates to the technical field of beam-column joint templates, in particular to a beam-column joint profiling recyclable template, which comprises a main steel reinforcement supporting metal angle plate, the two sides of the main steel reinforcement supporting metal angle plate are connected with beam part steel reinforcement supporting plates, the inner side surface of the main steel reinforcement supporting metal angle plate is fixed with two vertically-distributed wooden templates one, one side of the beam part steel reinforcement supporting plate close to the wooden template one is fixed with a wooden template two, a plurality of connecting hoop plates are fixed on the two vertically-distributed wooden templates one, the two horizontally-distributed connecting hoop plates are connected through bolts, and the same set of transverse reinforcing keels are installed on the surfaces of the main steel reinforcement supporting metal angle plate and the beam part steel reinforcement supporting plate; the beneficial effects are that the main steel reinforcement supporting metal angle plate covers the joint corner and the beam body direction in the form of an L-shaped structure, the inner side wooden template one and the beam part wooden template two are matched to form a continuous and smooth concrete forming surface, and the profiling precision at the joint is ensured.

Description

Technical Field

[0001] This invention relates to the field of beam-column joint formwork technology, specifically a prefabricated and reusable formwork for beam-column joints. Background Technology

[0002] In building construction, beam-column joints are critical load-bearing components of frame structures, and the quality of their concrete molding directly affects structural safety. Traditionally, beam-column joint formwork is often assembled on-site using wooden or prefabricated steel formwork, which presents several problems: First, there is a lack of reliable positioning and connection between the formwork and the reinforcing cage at the joint corners. Installation relies mainly on manual support or simple fixing, which can easily lead to displacement or even detachment under the lateral pressure of the concrete during pouring, resulting in large dimensional deviations, misalignment, or grout leakage. Second, beam formwork is usually prefabricated to a fixed length, making it difficult to adapt to changes in beam span, resulting in poor versatility and low reuse rate. Third, the formwork in the joint area and the beam area are often independent load-bearing systems, lacking a unified lateral reinforcement structure, leading to insufficient overall rigidity during pouring and common quality defects such as bulging and displacement. Fourth, traditional wooden formwork suffers significant wear and tear and rapid loss of precision after demolding, while steel formwork, although reusable, still requires extensive on-site cutting and welding at the joints, making the process cumbersome and affecting construction efficiency.

[0003] Therefore, there is an urgent need for a beam-column joint formwork that can be reliably positioned at the corner of the joint with the steel cage, can be flexibly spliced ​​and extended in the direction of the beam, has a unified reinforcement system as a whole, and is easy to reuse. Summary of the Invention

[0004] The purpose of this invention is to provide a fixed and reusable template for beam-column joints to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fixed and reusable template for beam-column joints, comprising a main steel reinforcement support metal corner plate, wherein beam reinforcement support plates are connected to both sides of the main steel reinforcement support metal corner plate, two vertically distributed wooden templates 1 are fixed to the inner surface of the main steel reinforcement support metal corner plate, and a wooden template 2 is fixed to the side of the beam reinforcement support plate near the wooden template 1, and multiple connecting hoops are fixed to the two vertically distributed wooden templates 1, and two horizontally arranged connecting hoops are connected by bolts, and the same set of transverse reinforcing joists are installed on the surfaces of the main steel reinforcement support metal corner plate and the beam reinforcement support plate.

[0006] Preferably, the main steel reinforcement support metal corner plate has an "L" shaped plate structure, the height of the wooden template one and the main steel reinforcement support metal corner plate are equal, the thickness of the main steel reinforcement support metal corner plate is equal to the thickness of the beam reinforcement support plate, and the thickness of the wooden template one is equal to the thickness of the wooden template two.

[0007] Preferably, edge grooves are formed on the outer surfaces of both sides of the main reinforcement support metal corner plate, the height of each edge groove is equal to that of the main reinforcement support metal corner plate, a first splicing groove is formed on one side of the beam reinforcement support plate, the depth of the first splicing groove is equal to that of the edge groove, and the first splicing groove and the edge groove are spliced in a staggered manner.

[0008] Preferably, a reserved hole is formed on the surface of the first splicing groove, a first screw rod is inserted into the reserved hole, one end of the first screw rod is fixed on the surface of the edge groove, and the other end of the first screw rod penetrates through the reserved hole and is then sleeved with and screwed to a nut.

[0009] Preferably, a second splicing groove is formed on the other side of the beam reinforcement support plate, the width and depth of the second splicing groove are equal to those of the first splicing groove, the first splicing groove is located on a side of the beam reinforcement support plate close to the second wooden formwork, the second splicing groove is located on a side of the beam reinforcement support plate away from the second wooden formwork, there are a plurality of beam reinforcement support plates, and two adjacent beam reinforcement support plates are spliced in a staggered manner through the first splicing groove and the second splicing groove.

[0010] Preferably, a plurality of second screw rods are fixed on the surface of the second splicing groove, after two adjacent beam reinforcement support plates are spliced in a staggered manner end to end through the first splicing groove and the second splicing groove, the second screw rods on the surface of one beam reinforcement support plate penetrate through the reserved hole on the surface of the other beam reinforcement support plate and are then sleeved with and screwed to a nut.

[0011] Preferably, a first notch groove is formed on the outer surface of the main reinforcement support metal corner plate, a second notch groove is formed on the surface of the beam reinforcement support plate away from the second wooden formwork, after the main reinforcement support metal corner plate is connected with the beam reinforcement support plate, the second notch groove is communicated with the first notch groove, and one side of the transverse reinforcing keel extends into the first notch groove and the second notch groove.

[0012] Preferably, a limiting frame is fixed on a side of the beam reinforcement support plate away from the second wooden formwork, the limiting frame is in a "匚"-shaped plate structure, the spacing between two parallel side plates of the limiting frame is equal to the height of the transverse reinforcing keel, the two parallel side plates of the limiting frame are respectively distributed on the upper side and the lower side of the second notch groove, a connecting screw rod is screwed on the surface of the limiting frame, and the connecting screw rod penetrates through the limiting frame and is then screwed on the surface of the transverse reinforcing keel.

[0013] Preferably, the connecting hoop plate is in an arc-shaped plate structure, connecting pieces are integrally formed at both ends of the connecting hoop plate, an anti-loosening self-tapping screw is screwed on the surface of one connecting piece, the anti-loosening self-tapping screw penetrates through one connecting piece and is then screwed on the surface of the first wooden formwork, a through hole is formed on the surface of the other connecting piece, and the same group of bolts is inserted into the through holes on the connecting pieces at the ends of the two connecting hoop plates.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The present invention proposes a reusable formwork for beam-column joints. The main steel reinforcement supports a metal corner plate in an "L" shape, simultaneously covering the corner of the joint and the direction of the beam. Combined with the inner wooden formwork and the beam-side wooden formwork, a continuous and flat concrete forming surface is formed, ensuring the shaping accuracy at the joint. The staggered splicing of the side groove and splicing groove one, along with the locking connection of screw one and nut, enables rapid positioning and fixing of the beam-side steel reinforcement support plate and the main corner plate. Simultaneously, adjacent beam-side steel reinforcement support plates achieve lateral extension through the interlocking splicing of splicing groove one and splicing groove two, and the screw two passing through pre-drilled holes. This meets the formwork configuration requirements for beams of different spans, significantly improving the versatility and reusability of the formwork. The transverse reinforcement channel formed by connecting slot one and slot two is used to insert transverse reinforcement keels, which are then constrained by limit frames and locked with connecting bolts. This creates a unified force system between the formwork at the node corners and the beam direction, effectively enhancing the flexural stiffness of the beam formwork after splicing and preventing bulging and displacement of the formwork during pouring. The connecting hoop plates are fixed to the wooden formwork with anti-loosening self-tapping screws, and then bolted together to form a ring hoop structure that fits on the outside of the vertical reinforcement. This ensures reliable snap-fit ​​positioning between the main corner plate and the reinforcement cage, making installation convenient and preventing detachment. All components are detachable using bolts and screws, allowing for repeated use after cleaning after demolding, reducing construction costs and improving construction efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the connection structure between the main steel reinforcement support metal angle plate and the connecting hoop plate of the present invention; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B; Figure 5 This is a schematic diagram of the beam reinforcement support plate structure of the present invention; Figure 6 This is a schematic diagram of the main steel reinforcement support metal corner plate structure of the present invention; Figure 7 This is a schematic diagram of the connecting hoop structure of the present invention.

[0016] In the diagram: 1. Main steel reinforcement support metal corner plate, 101. Wooden formwork 1, 102. Side groove, 103. 104. 105. 105. Beam reinforcement support plate, 2. Wooden formwork 2, 201. 202. 203. 204. 205. 206. 206. 3. Horizontal reinforcement keel, 4. Limiting frame, 401. 5 ... Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0018] Please see Figures 1 to 7 The present invention provides a technical solution: a prefabricated and reusable template for beam-column joints, which consists of a main steel reinforcement support metal corner plate 1, a beam steel reinforcement support plate 2, a transverse reinforcing keel 3, a limiting frame 4, and a connecting hoop plate 5. The components are modularly spliced ​​together through preset slots, screws, and bolts, which not only ensures the prefabricated accuracy of the template at the joint, but also meets the requirements for reusability.

[0019] The main steel reinforcement support metal corner plate 1 has an "L"-shaped plate structure, with beam reinforcement support plates 2 connected to both sides. Two vertically distributed wooden formwork templates 101 are fixed to the inner surface of the plate to adhere the vertical reinforcement cage at the corner of the joint, forming the concrete forming surface. A wooden formwork template 201 is fixed to the side of the beam reinforcement support plate 2 closest to the wooden formwork template 101, used to adhere the horizontal reinforcement cage in the beam direction. The thickness of the main steel reinforcement support metal corner plate 1 is equal to the thickness of the beam reinforcement support plate 2, and the thicknesses of the wooden formwork templates 101 and 201 are also equal, thus ensuring a smooth and continuous inner surface of the formwork after splicing, preventing misalignment during concrete pouring. The outer surface of the main steel reinforcement support metal corner plate 1 is provided with a side groove 102, which runs through the entire height of the corner plate. A splicing groove 202 is provided on one side of the beam reinforcement support plate 2. The depth of the splicing groove 202 is equal to that of the side groove 102, and the two are spliced ​​together in a staggered manner to form a continuous vertical channel. A pre-drilled hole 204 is provided on the surface of the splicing groove 202. One end of a screw rod 103 is fixed to the surface of the side groove 102, and the other end passes through the pre-drilled hole 204 and is fitted with a screw nut 104, thereby firmly connecting the beam reinforcement support plate 2 and the main steel reinforcement support metal corner plate 1, achieving rapid positioning and locking of the formwork at the corner of the node.

[0020] A second splicing groove 203 is provided on the other side of the beam reinforcement supporting plate 2, the width and depth of the second splicing groove 203 are equal to those of the first splicing groove 202. The first splicing groove 202 is located on a side of the beam reinforcement supporting plate 2 close to the second wood formwork 201, and the second splicing groove 203 is located on a side away from the second wood formwork 201. When it is necessary to expand the formwork according to the length of the beam steel cage, a plurality of beam reinforcement supporting plates 2 are arranged sequentially, two adjacent beam reinforcement supporting plates 2 are spliced in a staggered manner through the first splicing groove 202 and the second splicing groove 203, meanwhile, a second screw rod 205 on the surface of one beam reinforcement supporting plate 2 penetrates through a reserved hole 204 on the surface of another beam reinforcement supporting plate 2 and is then sleeved with and screwed to a nut 104, thereby realizing the transverse expansion splicing of the beam formwork. This splicing method enables an occlusal connection to be formed between adjacent formworks, effectively improving the integrity and bending resistance of the spliced beam formwork, and meeting the formwork configuration requirements for beams with different spans.

[0021] In order to further enhance the bending stiffness of a plurality of spliced beam reinforcement supporting plates 2, a first notch 105 is provided on the outer surface of the main reinforcement supporting metal corner plate 1, and a second notch 206 is provided on the surface of the beam reinforcement supporting plate 2 away from the second wood formwork 201. After the main reinforcement supporting metal corner plate 1 is connected with the beam reinforcement supporting plate 2, the first notch 105 and the second notch 206 communicate with each other to form a transversely penetrating reinforcement channel, one side of the transverse reinforcement keel 3 extends into the channel to provide transverse supporting force for the formwork. A limiting frame 4 is fixed on the side of the beam reinforcement supporting plate 2 away from the second wood formwork 201, the limiting frame 4 is in a "匚"-shaped plate structure, the spacing between two parallel side plates thereof is equal to the height of the transverse reinforcement keel 3, and the two side plates are respectively distributed on the upper and lower sides of the second notch 206, so as to limit the transverse reinforcement keel 3 in the notch channel and prevent the transverse reinforcement keel 3 from coming out under the action of concrete lateral pressure. A connecting screw rod 401 is screwed on the surface of the limiting frame 4, the connecting screw rod 401 penetrates the limiting frame 4 and is then screwed on the surface of the transverse reinforcement keel 3, locking and fixing the transverse reinforcement keel 3 and the limiting frame 4 to ensure the stability of the reinforcement system during pouring. The same set of transverse reinforcement keels 3 is simultaneously installed on the surfaces of the main reinforcement supporting metal corner plate 1 and the beam reinforcement supporting plate 2, so that the node corner and the formwork in the beam direction form a unified stress system.

[0022] Multiple connecting hoop plates 5 are fixed to two vertically distributed wooden templates 101. Each connecting hoop plate 5 has an arc-shaped plate structure with integrally formed connecting pieces at both ends. One connecting piece is screwed with an anti-loosening self-tapping screw 503, which passes through the connecting piece and screws onto the surface of the wooden template 101, fixing the connecting hoop plate 5 to the wooden template. The other connecting piece has a through hole 501 on its surface. The two horizontally arranged connecting hoop plates 5 are connected by bolts 502. Specifically, the same set of bolts 502 are inserted into the through holes 501 on the connecting pieces at the ends of the two connecting hoop plates 5. After tightening, the two connecting hoop plates 5 form a closed annular hoop structure, which can be tightly fitted onto the outside of the vertical reinforcing bars of the main reinforcing cage. This structure allows for the installation of the main reinforcing bar support metal corner plate 1, where the corner plate is first placed at the corner of the main reinforcing cage, then the two connecting hoop plates 5 are pried open and fitted onto the vertical reinforcing bars, and finally connected and closed using bolts 502. When multiple sets of connecting hoops 5 are connected to the vertical reinforcing bars, the main reinforcing bar support metal corner plate 1 is firmly restrained to one side of the vertical reinforcing bars and will not fall off, thus achieving reliable positioning of the formwork and the reinforcing cage.

[0023] The installation and use process of this invention is as follows: First, place the main steel reinforcement support metal corner plate 1 at the corner of the main steel reinforcement cage, and use the connecting hoop plate 5 to fit it and lock it to the vertical steel reinforcement with bolts 502 to fix the corner plate to the steel reinforcement cage. Then, according to the actual length of the beam steel reinforcement cage, select a matching number of beam steel reinforcement support plates 2 and splice them in sequence. Adjacent beam steel reinforcement support plates 2 are interlocked by splicing groove one 202 and splicing groove two 203, and are locked by screw two 205 through the reserved hole 204 and screwed with nut 104. The beam steel reinforcement support plate 2 and the main steel reinforcement support metal corner plate 1 are spliced ​​by the side groove 102 and splicing groove one 202, and are connected and fixed by screw one 103 and nut 104. Next, insert the transverse reinforcing keel 3 into the channel formed by the connection of notch one 105 and notch two 206, and screw the connecting screw 401 on the limiting frame 4 to lock the keel, completing the installation of the reinforcement system. Finally, by installing main steel reinforcement support metal corner plates 1 at both corners of the main steel cage, the assembly of the entire beam-column joint formwork is completed, and concrete pouring can proceed. After pouring and demolding, the components are detached via bolts and threaded rods, and can be reused after cleaning.

[0024] Although embodiments of the invention have been shown and described, 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 prefabricated and reusable formwork for beam-column joints, comprising a main steel reinforcement support metal corner plate (1), characterized in that: Both sides of the main steel reinforcement support metal corner plate (1) are connected to beam steel reinforcement support plates (2). Two vertically distributed wooden templates (101) are fixed on the inner surface of the main steel reinforcement support metal corner plate (1). A wooden template (201) is fixed on the side of the beam steel reinforcement support plate (2) close to the wooden template (101). Multiple connecting hoops (5) are fixed on the two vertically distributed wooden templates (101). The two horizontally distributed connecting hoops (5) are connected by bolts (502). The same set of transverse reinforcing joists (3) are installed on the surfaces of the main steel reinforcement support metal corner plate (1) and the beam steel reinforcement support plate (2).

2. The formwork for beam-column joints that is standardized and reusable according to claim 1, characterized in that: The main steel reinforcement support metal corner plate (1) has an "L" shaped plate structure. The height of the wooden template one (101) and the main steel reinforcement support metal corner plate (1) are equal. The thickness of the main steel reinforcement support metal corner plate (1) is equal to the thickness of the beam steel reinforcement support plate (2). The thickness of the wooden template one (101) is equal to the thickness of the wooden template two (201).

3. The formwork for beam-column joints that is standardized and reusable according to claim 1, characterized in that: Both sides of the main steel reinforcement support metal corner plate (1) have side grooves (102) on their outer surfaces. The height of the side grooves (102) is equal to the height of the main steel reinforcement support metal corner plate (1). The beam steel reinforcement support plate (2) has a splicing groove (202) on one side. The depth of the splicing groove (202) and the side groove (102) are equal. The splicing groove (202) and the side groove (102) are spliced ​​in a staggered manner.

4. The formwork for beam-column joints that is standardized and reusable according to claim 2, characterized in that: The surface of the splicing groove (202) is provided with a reserved hole (204). A screw (103) is inserted into the reserved hole (204). One end of the screw (103) is fixed to the surface of the side groove (102), and the other end of the screw (103) passes through the reserved hole (204) and is fitted with a screw nut (104).

5. A reusable, prefabricated template for beam-column joints according to claim 2, characterized in that: On the other side of the beam reinforcement support plate (2), there is a splicing groove two (203). The width and depth of the splicing groove two (203) and the splicing groove one (202) are equal. The splicing groove one (202) is located on the side of the beam reinforcement support plate (2) close to the wooden template two (201), and the splicing groove two (203) is located on the side of the beam reinforcement support plate (2) away from the wooden template two (201). There are multiple beam reinforcement support plates (2). Two adjacent beam reinforcement support plates (2) are spliced ​​together by the staggered splicing of the splicing groove one (202) and the splicing groove two (203).

6. A reusable, prefabricated template for beam-column joints according to claim 5, characterized in that: Multiple screw rods (205) are fixed on the surface of the splicing groove 2 (203). After the two adjacent beam reinforcement support plates (2) are spliced ​​end to end through the splicing groove 1 (202) and splicing groove 2 (203), the screw rods (205) on the surface of one beam reinforcement support plate (2) pass through the reserved hole (204) on the surface of the other beam reinforcement support plate (2) and then the screw nut (104) is fitted on it.

7. A reusable, prefabricated template for beam-column joints according to claim 1, characterized in that: An outer surface of the main steel reinforcement supporting metal angle plate (1) is provided with a first notch (105), and a surface of the beam steel reinforcement supporting plate (2) away from the second wood formwork (201) is provided with a second notch (206); after the main steel reinforcement supporting metal angle plate (1) is connected with the beam steel reinforcement supporting plate (2), the second notch (206) communicates with the first notch (105), and one side of the transverse reinforcing keel (3) extends into the first notch (105) and the second notch (206).

8. A reusable, prefabricated template for beam-column joints according to claim 7, characterized in that: A limiting frame (4) is fixed on a side of the beam steel reinforcement supporting plate (2) away from the second wood formwork (201), the limiting frame (4) is in a "匚"-shaped plate structure, a spacing between two parallel side plates of the limiting frame (4) is equal to a height of the transverse reinforcing keel (3), the two parallel side plates of the limiting frame (4) are respectively distributed on the upper and lower sides of the second notch (206), a connecting screw rod (401) is screwed on a surface of the limiting frame (4), and the connecting screw rod (401) penetrates through the limiting frame (4) and is then screwed on a surface of the transverse reinforcing keel (3).

9. A reusable, prefabricated template for beam-column joints according to claim 1, characterized in that: The connecting hoop plate (5) is in a circular arc plate structure, both ends of the connecting hoop plate (5) are integrally formed with connecting pieces, an anti-drop self-tapping screw (503) is screwed on a surface of one connecting piece, the anti-drop self-tapping screw (503) penetrates through one connecting piece and is then screwed on a surface of the first wood formwork (101), a through hole (501) is formed on a surface of the other connecting piece, and the same set of bolts (502) is inserted into the through holes (501) on the end connecting pieces of the two connecting hoop plates (5).

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