A concrete beam haunch reinforcing construction

Abstract

The application relates to a concrete beam haunch angle reinforcing structure and relates to the technical field of building reconstruction, which comprises a beam-column building main body, and the outer side of the beam-column building main body is provided with a pre-embedded plate. The pre-embedded plate is stably connected to the beam-column building main body through the setting of upper anchor bolts and side anchor bolts, the separation of a reinforcing layer from an original structure interface, which is common in traditional reinforcement, is effectively avoided, the anchor bolts are fixed on the original structure beam, the concrete cast-in-place haunch angle reinforcement is avoided from being welded with the original structure reinforcement and the original structure concrete is avoided from being chiseled, the damage to the original structure is reduced, the U-shaped hoops and the reinforcing bars are respectively matched and inserted into upper installation holes and side installation holes and are fixed through anchoring glue, local stress concentration caused by separate stress is avoided, stress transmission is further strengthened, the overall rigidity and the bearing capacity of the haunch angle region are obviously improved, micro-cracks under shearing force, earthquakes or repeated loads are effectively inhibited from being generated and expanded, and the long-term reliability of the reinforced structure is effectively ensured.

Description

Technical Field

[0001] This application relates to the field of building renovation technology, and in particular to a reinforcement structure for the haunch corner of a concrete beam. Background Technology

[0002] In reinforced concrete frame structures, the connection nodes between beams and columns are the core areas for force transmission. The haunches at these nodes, the right-angle transition areas formed by the beam end and the column side, are critical weak points in the structure's stress distribution because they must simultaneously withstand the combined effects of beam end bending moment, shear force, and column axial force. In actual engineering projects, due to factors such as initial design defects, structural aging, increased service loads, or updates to seismic codes, many concrete beam haunches require reinforcement.

[0003] Currently, existing technologies for strengthening beam-column connection nodes do not optimize the design to address the stress concentration problem at the axle angle. As a result, even after strengthening, the axle angle is still prone to developing microcracks under shear force. Under earthquakes or repeated loading, the cracks will rapidly propagate to the point of penetration, eventually leading to axle angle shear failure, thus failing to ensure the long-term reliability of the strengthened structure. Utility Model Content

[0004] The purpose of this application is to provide a reinforcement structure for the axle corner of a concrete beam. By setting upper and side anchor bolts, the embedded plate is firmly connected to the main body of the beam and column, which effectively avoids the common problem in traditional reinforcement where the reinforcement layer separates from the original structure interface. Then, the flange plate and web plate are welded to form a three-dimensional steel frame, which can actively disperse the axle corner stress, thereby avoiding stress concentration and significantly improving the overall stiffness and bearing capacity of the axle corner area, thus solving the problems mentioned in the background art.

[0005] This application provides a concrete beam axle corner reinforcement structure with the following technical solution: A concrete beam axle corner reinforcement structure includes a beam-column building body. An embedded plate is provided on the outer side of the beam-column building body. Multiple equidistant upper anchor bolts are installed inside one side of the beam-column building body, and multiple equidistant side anchor bolts are installed inside the other side of the beam-column building body. The embedded plate and the beam-column building body are fixedly connected by the upper anchor bolts and the side anchor bolts. A flange plate is fixedly connected to the outer side of the embedded plate, and a web plate is fixedly connected to the inner side of the embedded plate, with the outer side of the web plate fixedly connected to the flange plate. On the outer side, multiple upper mounting holes are opened on one side of the main beam-column structure, and multiple side mounting holes are opened on the other side of the main beam-column structure. Multiple U-shaped hoops are arranged at equal intervals on the outer side of the web, and the outer side of the U-shaped hoops is inserted into the inner side of the upper mounting holes. Two sets of symmetrical reinforcing bars are provided on the outer side of the web, and the outer side of the reinforcing bars is inserted into the inner wall of the side mounting holes. Two symmetrical side templates are provided on the outer side of the embedded plate. Both side templates have pouring holes on their outer sides. The outer sides of the two side templates are fixedly connected to the bottom template by bolts. Concrete is poured into the interior of the two side templates.

[0006] By adopting the above technical solution and setting up upper and side anchor bolts, a stable connection between the embedded plate and the main beam and column structure is achieved, preventing the reinforcement layer from separating from the original structure interface. Then, by utilizing the synergistic effect of the flange plate and web plate, a three-dimensional steel frame can be formed, which can actively disperse the stress at the axle angle, thereby avoiding stress concentration. At the same time, the U-shaped hoop and reinforcing ribs penetrate deep into the main beam and column structure, further enhancing stress transmission. Afterward, the side formwork and bottom formwork enclose the sealed pouring space, and with the pouring of concrete, a composite reinforcement body is formed that envelops the entire steel structure. This significantly improves the overall stiffness and load-bearing capacity of the axle angle area, effectively suppresses stress concentration, and thus ensures the long-term reliability of the reinforcement structure.

[0007] Preferably, the positions of the plurality of upper anchor bolts are staggered from the main reinforcement bars inside the beam-column building structure, and the positions of the plurality of side anchor bolts are staggered from the main reinforcement bars inside the beam-column building structure.

[0008] By adopting the above technical solution, the upper and side anchor bolts can avoid the main reinforcement inside the beam and column structure during installation. This can prevent damage to the original main reinforcement due to bolt drilling, prevent damage to the original load-bearing capacity, ensure the safety of the original structure, and at the same time ensure that the expansion bolts can be anchored in solid concrete.

[0009] Preferably, the positions of the plurality of upper mounting holes are staggered from the main reinforcing bars inside the beam-column building body, and the positions of the plurality of side mounting holes are staggered from the main reinforcing bars inside the beam-column building body.

[0010] By adopting the above technical solution, the upper and side mounting holes avoid the main reinforcement bars inside the beam and column structure, which can prevent damage to the original structural reinforcement bars during the drilling process, ensure the structural integrity of the beam and column structure, and ensure that the implant plays an effective anchoring and connection role, thereby enhancing the integrity of the new part with the original structure.

[0011] Preferably, the web plate is fixedly connected to the embedded plate and the flange plate by welding.

[0012] By adopting the above technical solution, the web plate is fixed to the embedded plate and the flange plate respectively by welding. Welding can form a more solid connection node, so that the embedded plate, the flange plate and the web plate form an integral steel frame, avoiding loosening or separation between the reinforcement components, and ensuring that the steel frame can stably transmit and disperse the axle angle stress.

[0013] Preferably, the number of the plurality of U-shaped hoops is matched with the number of the upper mounting holes, and the outer side of the U-shaped hoops and the inner wall of the upper mounting holes are fixedly connected by anchoring adhesive.

[0014] By adopting the above technical solution, the number of U-shaped hoops is matched with the upper mounting holes, which can ensure that each U-shaped hoop has a corresponding installation position and avoid local stress concentration caused by mismatch in quantity. At the same time, the U-shaped hoops are fixed to the upper mounting holes with anchoring adhesive, which can enhance the connection strength between the U-shaped hoops and the main beam and column structure, prevent the U-shaped hoops from detaching from the original structure, ensure that the U-shaped hoops can effectively transfer shear force, and reduce the generation of micro-cracks at the axle corner.

[0015] Preferably, the number of the two sets of reinforcing ribs is adapted to the number of the side mounting holes, and the outer side of the reinforcing rib and the inner wall of the side mounting hole are fixedly connected by anchoring adhesive.

[0016] By adopting the above technical solution, the number of reinforcing ribs is matched with the side mounting holes, which can achieve a uniform distribution of reinforcing ribs on the side of the axle corner, avoiding uneven local stress. Then, the reinforcing ribs and the side mounting holes are fixed with anchoring adhesive, which can enhance the connection reliability between the reinforcing ribs and the main beam and column structure, and allow the reinforcing ribs and U-shaped hoops to form a three-dimensional shear resistance system, further dispersing the axle corner stress, preventing crack propagation, and ensuring the long-term safety of the reinforced structure.

[0017] Preferably, the reinforcing rib is fixedly connected to the U-shaped hoop by welding.

[0018] By adopting the above technical solution, the reinforcing rib and the U-shaped hoop can be fixed by welding, and the two can be connected into an integral load-bearing structure, avoiding local stress concentration caused by the reinforcing rib and the U-shaped hoop being subjected to force alone.

[0019] Preferably, the two side templates are fixedly connected to the main beam and column structure by bolts, and rubber plugs are inserted into the inner side of the two pouring holes.

[0020] By adopting the above technical solution, the side formwork is fixed to the main body of the beam and column building with bolts, which can ensure that the formwork does not shift or leak grout when pouring concrete. At the same time, the rubber plug can seal the pouring hole after the concrete is poured to prevent debris from entering the hole and affecting the structural performance. It also ensures the integrity of the concrete after pouring, improves the strength of the reinforcement layer, and avoids the damage to the haunch corner caused by pouring defects.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This concrete beam axle corner reinforcement structure uses upper and side anchor bolts to firmly connect the embedded plate to the main beam and column structure, effectively avoiding the common problem of the reinforcement layer separating from the original structure in traditional reinforcement. Furthermore, the use of anchor bolts to fix the reinforcement to the original beam avoids welding the cast-in-place axle corner reinforcement to the original structural reinforcement and chiseling the original concrete, reducing damage to the original structure. Then, a three-dimensional steel frame is formed by welding the flange plate and web plate, which actively disperses the axle corner stress, thus avoiding stress concentration. Simultaneously, U-shaped hoops and reinforcing bars are inserted into the upper and side mounting holes and fixed with anchoring adhesive, preventing localized stress concentration caused by isolated forces and further strengthening stress transmission. Finally, the side and bottom formworks enclose a sealed pouring space, and with the pouring of concrete, a composite reinforcement body encasing the steel structure is formed, significantly improving the overall stiffness and load-bearing capacity of the axle corner area. This effectively suppresses the generation and propagation of micro-cracks under shear force, earthquakes, or repeated loading, ensuring the long-term reliability of the reinforced structure. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the entire application; Figure 2 This is a schematic diagram of the overall internal structure of this application; Figure 3 This is a three-dimensional structural diagram of the mounting holes and side mounting holes in this application; Figure 4 This is a front view of the mounting holes in this application; Figure 5 This is a front view of the mounting hole in this application.

[0023] In the picture: 1. Beam and column structure; 2. Embedded plate; 3. Upper anchor bolt; 4. Side anchor bolt; 5. Flange plate; 6. Web plate; 7. Upper mounting hole; 8. Side mounting hole; 9. U-shaped hoop; 10. Reinforcing bar; 11. Side formwork; 12. Bottom formwork; 13. Pouring hole; 14. Rubber plug. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0025] Example 1: A reinforcement structure for the haunch corner of a concrete beam, please refer to... Figure 1 and Figure 2 The structure includes a beam-column main body 1, with an embedded plate 2 on the outer side of the beam-column main body 1. Multiple equidistant upper anchor bolts 3 are installed inside one side of the beam-column main body 1, and multiple equidistant side anchor bolts 4 are installed inside the other side of the beam-column main body 1. Through the use of the upper anchor bolts 3 and side anchor bolts 4, a stable connection is achieved between the embedded plate 2 and the beam-column main body 1, preventing the reinforcement layer from detaching from the original structural interface. The embedded plate 2 and the beam-column main body 1 are fixedly connected by the upper anchor bolts 3 and side anchor bolts 4. A flange plate 5 is fixedly connected to the outer side of the embedded plate 2, and a flange plate 5 is fixed to the inner side of the embedded plate 2. The web plate 6 is connected to the outer side of the flange plate 5. By utilizing the synergistic effect of the flange plate 5 and the web plate 6, a three-dimensional steel frame can be formed, which can actively disperse the axillary angle stress and thus avoid stress concentration. The web plate 6 is fixedly connected to the embedded plate 2 and the flange plate 5 by welding. The web plate 6 is fixed to the embedded plate 2 and the flange plate 5 by welding. Welding can form a more solid connection node, so that the embedded plate 2, the flange plate 5 and the web plate 6 form an integral steel frame, avoiding loosening or separation between the reinforcing components, and ensuring that the steel frame can stably transmit and disperse the axillary angle stress.

[0026] Please refer to Figure 3 , Figure 4 and Figure 5 Multiple upper mounting holes 7 are provided on one side of the main beam-column structure 1, and multiple side mounting holes 8 are provided on the other side of the main beam-column structure 1. Multiple U-shaped hoops 9 are arranged at equal intervals on the outer side of the web plate 6, and the outer side of the U-shaped hoops 9 is inserted into the inner side of the upper mounting holes 7. Two sets of symmetrical reinforcing ribs 10 are provided on the outer side of the web plate 6, and the outer side of the reinforcing ribs 10 is inserted into the inner wall of the side mounting holes 8. The U-shaped hoops 9 and the reinforcing ribs 10 penetrate into the interior of the main beam-column structure 1 to further enhance stress transmission. The reinforcing ribs 10 are fixedly connected to the U-shaped hoops 9 by welding. The reinforcing ribs 10 and the U-shaped hoops 9 are fixed by welding, which can connect the two into an integral load-bearing structure and avoid local stress concentration caused by the reinforcing ribs 10 and the U-shaped hoops 9 being subjected to force alone.

[0027] Please refer to Figure 1 and Figure 2Two symmetrical side templates 11 are provided on the outer side of the embedded plate 2. Both side templates 11 have pouring holes 13 on their outer sides. The outer sides of the two side templates 11 are fixedly connected to the bottom template 12 by bolts. Concrete is poured into the interior of the two side templates 11. The side templates 11 and the bottom template 12 form a closed pouring space. With the pouring concrete, a composite reinforced body is formed that wraps the entire steel structure, which significantly improves the overall stiffness and load-bearing capacity of the haunch corner area. The two side templates 11 are fixedly connected to the main beam and column 1 by bolts. Rubber plugs 14 are inserted into the inner side of the two pouring holes 13. The side templates 11 are fixed to the main beam and column 1 by bolts, which can ensure that the template does not shift or leak grout when pouring concrete. At the same time, the rubber plugs 14 can seal the pouring holes 13 after the concrete is poured to prevent debris from entering the holes and affecting the structural performance. It also ensures the integrity of the concrete after pouring, improves the strength of the reinforced layer, and avoids haunch corner damage caused by pouring defects.

[0028] Example 2: A reinforcement structure for the haunch corner of a concrete beam, please refer to... Figure 2 , Figure 4 and Figure 5 The positions of multiple upper anchor bolts 3 and multiple side anchor bolts 4 are staggered from the main reinforcement bars inside the beam-column main body 1. The upper anchor bolts 3 and side anchor bolts 4 avoid the main reinforcement bars inside the beam-column main body 1 during installation, preventing damage to the original structural reinforcement bars due to bolt drilling, thus preventing damage to the original load-bearing capacity and ensuring the safety of the original structure. This also ensures that the expansion bolts can be anchored in solid concrete. The positions of multiple upper mounting holes 7 and multiple side mounting holes 8 are staggered from the main reinforcement bars inside the beam-column main body 1. The upper mounting holes 7 and side mounting holes 8 avoid the main reinforcement bars inside the beam-column main body 1, preventing damage to the original structural reinforcement bars during drilling, ensuring the structural integrity of the beam-column main body 1, and ensuring that the implanted parts effectively anchor and connect, thus enhancing the overall integrity of the new part with the original structure.

[0029] Please refer to Figure 2 and Figure 3The number of U-shaped hoops 9 is matched with the number of upper mounting holes 7. The outer side of the U-shaped hoop 9 and the inner wall of the upper mounting hole 7 are fixedly connected by anchoring adhesive. The matching of the number of U-shaped hoops 9 with the upper mounting hole 7 ensures that each U-shaped hoop 9 has a corresponding installation position, avoiding local stress concentration due to mismatch in quantity. At the same time, the fixing of the U-shaped hoops 9 to the upper mounting hole 7 by anchoring adhesive can enhance the connection strength between the U-shaped hoops 9 and the main beam and column structure 1, prevent the U-shaped hoops 9 from detaching from the original structure, ensure that the U-shaped hoops 9 can effectively transfer shear force, and reduce the generation of micro-cracks at the axle angle. Two sets of reinforcing bars 10 The number of reinforcing ribs 10 is matched with the number of side mounting holes 8. The outer side of the reinforcing ribs 10 and the inner wall of the side mounting holes 8 are fixedly connected by anchoring adhesive. The matching of the number of reinforcing ribs 10 with the side mounting holes 8 can achieve a uniform distribution of the reinforcing ribs 10 on the side of the axle corner, avoiding uneven local stress. After that, the reinforcing ribs 10 and the side mounting holes 8 are fixed by anchoring adhesive, which can enhance the connection reliability between the reinforcing ribs 10 and the main beam and column 1. The reinforcing ribs 10 and the U-shaped hoop 9 are used to form a three-dimensional shear resistance system, further dispersing the axle corner stress, preventing crack propagation, and ensuring the long-term safety of the reinforced structure.

[0030] The implementation principle of this application embodiment is as follows: First, on the outer side of the axle angle of the beam-column building body 1, the embedded plate 2 is fixed by the upper anchor bolt 3 and the side anchor bolt 4. The positions of the upper anchor bolt 3 and the side anchor bolt 4 avoid the main reinforcement inside the beam-column building body 1, so as to avoid damaging the original structural reinforcement and thus impairing the load-bearing capacity. In this way, the embedded plate 2 and the beam-column building body 1 can form a stable connection. Next, the web plate 6 is fixed to the embedded plate 2 and the flange plate 5 by welding, so that the three form an integral three-dimensional steel frame. This can construct an axle angle stress dispersion frame, thereby actively dispersing the axle angle stress. Subsequently, the U-shaped hoop 9 is inserted into the preset upper mounting hole 7, and the reinforcing bar 10 is inserted into the side mounting hole 8. The U-shaped hoop 9 and the reinforcing bar 10 are fixed by the anchoring adhesive. At the same time, the reinforcing bar 1 The 0 and U-shaped hoop 9 are welded together to form a whole, thereby forming a three-dimensional shear-resistant system covering the upper, lower and side sides of the axle corner, further strengthening the stress transfer between the reinforced structure and the original main body, and avoiding local stress concentration. Then, the side formwork 11 is fixed to the beam and column main body 1 with bolts, and the bottom formwork 12 is connected to the side formwork 11 with bolts to form a closed pouring space. Concrete is poured into the space through the pouring hole 13, and then the pouring hole 13 is sealed with a rubber plug 14 to prevent debris from entering and to ensure the compactness of the concrete. Finally, the poured concrete, together with the three-dimensional steel frame, U-shaped hoop 9 and reinforcing bar 10, constitutes a composite reinforced body. The whole can effectively disperse the shear force and bending moment borne by the axle corner and suppress the generation and propagation of microcracks under earthquake or repeated loading.

Claims

1. A reinforced structure for the haunch corner of a concrete beam, comprising a beam-column building body (1), characterized in that: An embedded plate (2) is provided on the outer side of the main beam-column building (1). Multiple upper anchor bolts (3) are installed inside one side of the main beam-column building (1), and multiple side anchor bolts (4) are installed inside the other side of the main beam-column building (1). The embedded plate (2) and the main beam-column building (1) are fixedly connected by the upper anchor bolts (3) and the side anchor bolts (4). A flange plate (5) is fixedly connected to the outer side of the embedded plate (2), and a web plate (6) is fixedly connected to the inner side of the embedded plate (2). The outer side of the web plate (6) is fixedly connected to the outer side of the flange plate (5). Multiple upper mounting holes (7) are opened on one side of the main beam-column building (1). Multiple side mounting holes (8) are provided on the other side of the main body of the column (1). Multiple U-shaped hoops (9) are arranged at equal intervals on the outer side of the web (6), and the outer side of the U-shaped hoops (9) is inserted into the inner side of the upper mounting hole (7). Two sets of symmetrical reinforcing bars (10) are provided on the outer side of the web (6), and the outer side of the reinforcing bars (10) is inserted into the inner wall of the side mounting hole (8). Two symmetrical side templates (11) are provided on the outer side of the embedded plate (2). Both side templates (11) have pouring holes (13) on their outer sides. The two side templates (11) are fixedly connected to the bottom template (12) by bolts. Concrete is poured into the interior of the two side templates (11).

2. The reinforcement structure for the haunch corner of a concrete beam according to claim 1, characterized in that: The positions of the multiple upper anchor bolts (3) are staggered from the main reinforcement bars inside the beam-column building body (1), and the positions of the multiple side anchor bolts (4) are staggered from the main reinforcement bars inside the beam-column building body (1).

3. The reinforcement structure for the haunch corner of a concrete beam according to claim 1, characterized in that: The positions of the multiple upper mounting holes (7) are staggered from the main reinforcement bars inside the beam-column building body (1), and the positions of the multiple side mounting holes (8) are staggered from the main reinforcement bars inside the beam-column building body (1).

4. The reinforcement structure for the haunch corner of a concrete beam according to claim 1, characterized in that: The web plate (6) is fixedly connected to the embedded plate (2) and the flange plate (5) by welding.

5. The reinforcement structure for the haunch corner of a concrete beam according to claim 1, characterized in that: The number of the multiple U-shaped hoops (9) is matched with the number of the upper mounting holes (7), and the outer side of the U-shaped hoops (9) and the inner wall of the upper mounting holes (7) are fixedly connected by anchoring adhesive.

6. The reinforcement structure for the haunch corner of a concrete beam according to claim 1, characterized in that: The number of the two sets of reinforcing ribs (10) is matched with the number of the side mounting holes (8), and the outer side of the reinforcing ribs (10) and the inner wall of the side mounting holes (8) are fixedly connected by anchoring adhesive.

7. The reinforcement structure for the haunch corner of a concrete beam according to claim 1, characterized in that: The reinforcing rib (10) is fixedly connected to the U-shaped hoop (9) by welding.

8. The reinforcement structure for the haunch corner of a concrete beam according to claim 1, characterized in that: The two side templates (11) are fixedly connected to the main beam and column building (1) by bolts, and rubber plugs (14) are inserted into the inner side of the two pouring holes (13).

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