A frame structure node steel bar assembly type connecting combination device

Abstract

The application relates to the technical field of building engineering frame structure construction, in particular to a frame structure node reinforcing steel bar assembly type connecting combination device, which comprises a concrete beam one, the inner wall of the concrete beam one is fixedly connected with reinforcing steel bars one, the top of the concrete beam one is fixedly provided with a connecting node, a mounting plate is welded to the left side of the connecting node, the number of the mounting plates is two, and the two mounting plates are symmetrically arranged with the connecting node as the center, the double functions of reinforcing steel bar butt joint positioning and pouring forming are realized through the I-shaped pouring box, the cavity of the I-shaped pouring box is adapted to the reinforcing steel bar specifications, the reinforcing steel bars one and reinforcing steel bars two can be precisely coaxially butted, the butt joint deviation problem of traditional connection is avoided, the pouring slurry can fully wrap the reinforcing steel bar butt joint parts, a firm wrapping structure is formed, the reinforcing steel bar connection firmness is improved, the box body has high concrete restraining capacity, the box body has high adhesion with the beam body and eliminates gaps, the beam body connection integrity is improved, and the anti-seismic performance of the device is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of construction of frame structures in building engineering, and in particular to a prefabricated connection assembly device for steel reinforcement at frame structure nodes. Background Technology

[0002] In the field of frame structure construction, frame joints, as the core components connecting concrete beams, directly determine the overall stability, load-bearing capacity, and seismic resistance of the frame structure through the quality of their rebar connections. With the development of prefabricated building technology, prefabricated connections of frame joint rebar have become the mainstream method in modern building construction due to their advantages of less on-site work and higher construction efficiency. The precision of rebar splicing, the bonding effect between the grout and the rebar, the integrity of the beam connection, and the seismic performance of the joint have also become the core technical points of prefabricated rebar connection construction.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: In the existing prefabricated connection construction of steel reinforcement in frame structure nodes, there is no dedicated integrated carrier for steel reinforcement butt welding and casting. Simple connecting sleeves or temporary on-site formwork are often used to complete the steel reinforcement butt welding and grouting operations. Due to the lack of positioning cavities adapted to the steel reinforcement specifications, these methods cannot form precise coaxial positioning constraints for the steel reinforcement in the concrete beam, which easily leads to problems such as steel reinforcement butt welding deviation and axial offset, resulting in uneven stress on the steel reinforcement. Furthermore, the grout after casting is difficult to fully wrap the steel reinforcement butt welding area, failing to form a strong bond structure, which significantly reduces the strength of the steel reinforcement connection and affects the foundation load-bearing performance of the frame node. Summary of the Invention

[0004] To improve the robustness of steel bar connections, this application provides a prefabricated connection assembly for steel bar joints in frame structures.

[0005] This application provides a prefabricated connection assembly for steel reinforcement in a frame structure, which adopts the following technical solution: it includes a concrete beam, a steel reinforcement is fixedly connected to the inner wall of the concrete beam, a connection node is fixedly installed on the top of the concrete beam, an assembly plate is welded to the left side of the connection node, there are two assembly plates, the two assembly plates are symmetrically arranged with the connection node as the center, a secondary beam is in contact with the right side of the connection node, and a second concrete beam is fixedly installed on the right side of the secondary beam.

[0006] The right end of the first concrete beam is tightly fitted with an I-shaped casting box. A connecting ring is welded to the left side of the I-shaped casting box. There are two connecting rings, which are symmetrically arranged around the center of the I-shaped casting box. A casting hole is opened at the top of the I-shaped casting box, and a sealing bolt is threaded to the inner wall of the casting hole. The right side of the connecting ring has a threaded hole, and a high-strength bolt is threaded to the inner wall of the threaded hole. The right side connecting ring is fixedly installed to the second concrete beam by the high-strength bolt. A second steel bar is fixedly connected to the inner wall of the second concrete beam. The left end of the second concrete beam is seamlessly fitted to the right end of the I-shaped casting box.

[0007] Optionally, the left side of the connecting ring is fixedly installed to the right side of the concrete beam by high-strength bolts, and a clamping groove is provided on the left side of the connecting ring.

[0008] Optionally, a clamping sealing ring is engaged with the inner wall of the clamping groove, and the left side of the clamping sealing ring contacts the right side of the concrete beam.

[0009] Optionally, both the first and second reinforcing bars are placed inside the I-shaped casting box, and the first and second reinforcing bars are compatible with each other.

[0010] Optionally, a reinforcing plate is fixedly welded to the inner wall of the assembly plate, and the number of the reinforcing plates is several, which are arranged in a ring array.

[0011] Optionally, an L-shaped reinforcing plate is fixedly welded to the inner wall of the connection node, and the number of L-shaped reinforcing plates is several, and the several L-shaped reinforcing plates are symmetrically arranged.

[0012] Optionally, the inner wall of the assembly plate is inserted into the outer wall of the secondary beam, the front of the assembly plate is in contact with a connecting plate, the front of the connecting plate is provided with a threaded hole, and the inner wall of the threaded hole is threaded with a high-strength bolt.

[0013] Optionally, the connecting plate is fixedly installed to the secondary beam by two high-strength bolts. A trapezoidal welding plate is welded to the left side of the connecting plate, and the left side of the trapezoidal welding plate is welded to the left side of the inner wall of the connecting node. A V-shaped support plate is welded to the right side of the connecting plate, and the outer wall of the V-shaped support plate is welded to the inner wall of the secondary beam.

[0014] In summary, this application includes the following beneficial technical effects: 1. This invention utilizes an I-shaped casting box that serves a dual function of positioning and casting rebars. Its cavity is adapted to the rebar specifications, allowing for precise coaxial connection between rebars one and two, avoiding the misalignment problems of traditional connections. The cast grout fully encapsulates the rebar connection area, forming a strong grip structure and improving the connection's strength. Furthermore, the box's strong confinement of the concrete and high fit with the beam eliminate gaps, enhancing both the overall integrity of the beam connection and significantly improving the device's seismic performance.

[0015] 2. This invention features a clamping groove at the connecting ring and a clamping sealing ring. The clamping sealing ring is made of an elastic sealing material, which undergoes elastic deformation under the tightening action of high-strength bolts, achieving seamless and tight contact with the sidewall of the concrete beam to form a reliable sealing structure. This structure completely avoids leakage problems when pouring grout into the I-shaped casting box, ensuring the amount and density of grout poured into the box, allowing the grout to fully coat the joint of the reinforcing bars, resulting in a more thorough bond between the reinforcing bars and the grout, further improving the stability and durability of the reinforcing bar connection.

[0016] 3. This invention features multiple sets of reinforcement structures at the connection nodes and assembly plates. The ring-shaped array of reinforcement plates within the assembly plates increases the load-bearing area, enhancing the structural strength and deformation resistance of the assembly plates. The symmetrical L-shaped reinforcement plates within the connection nodes adapt to the stress characteristics of the nodes, dispersing complex stresses and preventing deformation and cracking caused by stress concentration. This significantly improves the overall strength and load-bearing capacity of the frame nodes. Simultaneously, the symmetrical assembly plates on both sides of the connection nodes enable precise insertion of the secondary beams and main beams. Combined with the connection plates and high-strength bolts, the assembly-type fixing is completed. The trapezoidal welded plates and V-shaped support plates strengthen the connection parts, achieving integrated assembly of the main and secondary beams. This simplifies the construction process while improving the overall integrity of the connection and preventing loosening and displacement under load. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the I-shaped casting box in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the casting hole in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the compression sealing ring in the embodiment of this application; Figure 5 This is an embodiment of the present application. Figure 4 A magnified structural diagram of A in the middle; Figure 6 This is a schematic diagram of the structure of the L-shaped reinforcing plate in the embodiments of this application; Figure 7 This is a schematic diagram of the V-shaped support plate in the embodiments of this application. Reference numerals: 1. Concrete beam one; 11. Connection node; 12. Assembly plate; 13. Concrete beam two; 131. Secondary beam; 2. I-shaped casting box; 21. Connecting ring; 211. High-strength bolt; 22. Casting hole; 221. Sealing bolt; 23. Reinforcing bar one; 24. Reinforcing bar two; 25. Compacting groove; 251. Compacting sealing ring; 3. Reinforcing plate; 31. L-shaped reinforcing plate; 32. Connecting plate; 321. High-strength bolt two; 33. Trapezoidal welded plate; 34. V-shaped support plate. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0019] This application discloses a prefabricated connection assembly device for steel reinforcement at frame structure nodes. For example... Figure 1 As shown, concrete beam 1 serves as the main concrete beam, with reinforcing bars 23 pre-embedded inside. The ends of reinforcing bars 23 extend to the outside of concrete beam 1, preparing for connection with reinforcing bars 24 inside concrete beam 13. A connection node 11 is fixedly installed on the top of concrete beam 1. The connection node 11 is made of steel and is cast and fixed as a whole with the top of concrete beam 1. It serves as the core node connecting secondary beam 131 and concrete beam 1. Two assembly plates 12 are symmetrically welded on both sides of the connection node 11. The assembly plates 12 are also made of steel and are connected to the connection node 11 by full welding to ensure connection strength. The inner wall of the assembly plate 12 is adapted to the outer wall of secondary beam 131, enabling precise insertion between secondary beam 131 and assembly plate 12, providing a foundation for the prefabricated connection of secondary beam 131.

[0020] One end of the secondary beam 131 contacts the connecting node 11, and the other end is fixedly installed as a whole with the second concrete beam 13. The second concrete beam 13 has a second steel bar 24 pre-embedded inside, and the end of the second steel bar 24 extends to the outside of the second concrete beam 13. The specifications and dimensions of the second steel bar 24 and the first steel bar 23 are completely compatible to ensure uniform stress after the connection. An I-shaped casting box 2 is set between the first concrete beam 1 and the second concrete beam 13. The inner diameter of the cavity of the I-shaped casting box 2 is determined according to the specifications of the steel bars, and it is suitable for steel bars of Φ16-Φ40. The wall thickness of the box is 8mm-12mm and the length is 200mm-300mm. It can simultaneously accommodate the ends of the first steel bar 23 and the second steel bar 24, so as to achieve coaxial and precise connection of the two steel bars, effectively ensuring the accuracy of the steel bar connection and avoiding the steel bar offset from affecting the connection effect.

[0021] Two connecting rings 21 are symmetrically welded to both sides of the I-shaped casting box 2. The inner diameter of the connecting ring 21 is adapted to the outer wall of the I-shaped casting box, with a wall thickness of 10mm-14mm and a width of 50mm-80mm. The connecting ring 21 is a steel ring structure and is connected to the I-shaped casting box 2 by full welding. A threaded hole is provided on the connecting ring 21, and a high-strength bolt 211 is connected to the threaded hole. The connecting ring 21 is fixed to the side walls of concrete beam 1 and concrete beam 2 13 respectively by the high-strength bolt 211, realizing the assembled fixation of the I-shaped casting box 2 to the two concrete beams. The installation process is simple and convenient, requiring no additional steps. On-site welding effectively improves construction efficiency. A clamping groove 25 is provided on the side of the connecting ring 21 that contacts the concrete beam. A clamping sealing ring 251 is clamped in the clamping groove 25. The clamping sealing ring 251 is made of rubber elastic material with a trapezoidal cross section. The original thickness is 15mm-20mm, and the thickness is 10mm-15mm after being compressed, ensuring the sealing effect. Under the tightening action of the high-strength bolt 211, the clamping sealing ring 251 will undergo elastic deformation and make close contact with the side wall of the concrete beam to form a reliable sealing structure. This can effectively avoid leakage problems during subsequent grout pouring and ensure the pouring effect.

[0022] The top of the I-shaped casting box 2 has a casting hole 22, which is a cylindrical through hole with internal threads on its inner wall. A sealing bolt 221 is connected to the internal thread of the casting hole 22. Before pouring the grout into the I-shaped casting box 2, the sealing bolt 221 is unscrewed, and concrete grout is injected into the box through the casting hole 22. The grout can fully cover the joint of the first steel bar 23 and the second steel bar 24, realizing the solid connection of the two steel bars. After the pouring is completed, the sealing bolt 221 is tightened to seal the casting hole 22, preventing the grout from flowing out before solidification, and preventing external impurities from entering the box and affecting the bonding effect between the grout and the steel bars.

[0023] Both steel bars 1 (23) and 24 (24) are placed inside the I-shaped casting box 2, and the axes of the two steel bars are on the same straight line, achieving coaxial and precise connection. This arrangement ensures that the steel bars are evenly stressed after connection, avoids local stress concentration caused by force deviation, and improves the overall stability of the steel bar connection. The grout after pouring forms an integrated structure with the steel bars and the I-shaped casting box 2, further improving the connection strength between concrete beam 1 and concrete beam 2 (13).

[0024] Several reinforcing plates 3 are fixedly welded to the inner wall of the assembly plate 12. The reinforcing plates 3 are rectangular steel plates with a thickness of 6mm-10mm and dimensions of 50mm×80mm. Four reinforcing plates are arranged in a circular array with the center of the assembly plate 12 as the center. The reinforcing plates 3 are connected to the assembly plate 12 using a full welding process, which effectively improves the structural strength of the assembly plate 12, prevents deformation of the assembly plate 12 under load, and ensures the stability of the secondary beam 131 after connection with the assembly plate 12. Several L-shaped reinforcing plates 31 are fixedly welded to the inner wall of the connection node 11. The L-shaped reinforcing plate 31 has a thickness of 8mm-12mm, a short side length of 100mm, a long side length of 120mm, and is symmetrically arranged in 4 sets. The L-shaped reinforcing plate 31 is a steel irregular plate, and its structure is adapted to the internal space of the connection node 11. Several L-shaped reinforcing plates 31 are symmetrically arranged with the vertical center line of the connection node 11 as the axis of symmetry. The L-shaped reinforcing plate 31 and the connection node 11 are connected by a full welding process, which can effectively strengthen the load-bearing capacity of the connection node 11, disperse the stress at the frame node, avoid the deformation of the connection node 11 caused by stress concentration, and greatly improve the overall structural strength of the frame node.

[0025] The inner wall of the assembly plate 12 is inserted into the outer wall of the secondary beam 131 to achieve the initial positioning of the secondary beam 131 and the assembly plate 12. A connecting plate 32 is in contact with the outer side of the assembly plate 12. The connecting plate 32 is a steel plate, and its size is adapted to the connection part of the assembly plate 12 and the secondary beam 131. A threaded hole 2 is opened on the connecting plate 32, and a high-strength bolt 2 321 is internally threaded into the threaded hole 2. The connecting plate 32 is fixedly connected to the assembly plate 12 and the secondary beam 131 through the high-strength bolt 2 321, realizing the assembly-type fixing of the secondary beam 131 and the assembly plate 12. The fixing method is simple and reliable, and facilitates on-site construction and subsequent maintenance.

[0026] A trapezoidal welded plate 33 is welded to the side of the connecting plate 32 near the connecting node 11. The trapezoidal welded plate 33 is a steel irregularly shaped plate, and its side away from the connecting plate 32 is welded to the inner wall of the connecting node 11. The trapezoidal structure of the trapezoidal welded plate 33 can effectively disperse the stress between the connecting plate 32 and the connecting node 11, improve the connection strength between the connecting plate 32 and the connecting node 11, and prevent the connection from loosening under load. A V-shaped support plate 34 is welded to the side of the connecting plate 32 near the secondary beam 131. The V-shaped support plate 34 is a steel irregular plate with a thickness of 6mm-10mm and an opening angle of 60°-90°, which is adapted to the internal space dimensions of the secondary beam. Its outer wall is welded to the inner wall of the secondary beam 131. The opening of the V-shaped support plate 34 faces away from the connection node 11. The V-shaped structure has good resistance to deformation and support capabilities, which can effectively strengthen the connection between the connection plate 32 and the secondary beam 131, improve the load-bearing capacity of the secondary beam 131, and prevent the secondary beam 131 from shaking or deforming when under load.

[0027] The implementation principle of the prefabricated connection device for the rebar joint of the frame structure in this embodiment is as follows: by utilizing the adaptability of the cavity specifications of the I-shaped casting box 2, precise coaxial positioning constraints are formed for rebar 1 23 and rebar 24, avoiding rebar offset deviation from the basis of mechanical connection. After casting, the grout can fully bind the rebar joint section to form an integral load-bearing structure. At the same time, the I-shaped casting box 2 forms a strong constraint on the surrounding concrete due to its own structural characteristics, and tightly fits with the side walls of concrete beam 1 and concrete beam 2 13 to eliminate connection gaps, so that the beam connection forms a continuous load-bearing whole, thereby improving the overall structure and enhancing the mechanical performance of the joint in terms of shear and seismic resistance. During the grout pouring stage, the high-strength bolts 211 of the connecting ring 21 and the concrete beam 1 and concrete beam 2 13 tighten, causing the elastic compression sealing ring 251 in the compression groove 25 to be compressed and deformed elastically, forming a seamless surface contact sealing structure with the side wall of the beam. This blocks the grout leakage channel from the structural sealing level, ensuring the density and pouring volume of the grout in the box during the pouring process, allowing the steel bars and grout to achieve full bonding. This improves the long-term stability and durability of the steel bar connection from the material bonding level. In view of the mechanical characteristics of the frame node being subjected to multi-directional forces and prone to stress concentration, a ring array of reinforcing plates 3 is arranged in the assembly plate 12. By increasing the stress area, the local load is dispersed, improving the structural stiffness and deformation resistance of the assembly plate 12. In the connecting node 11, L-shaped reinforcing plates 31 are symmetrically arranged to adapt to the force transmission characteristics of the node, effectively dispersing complex stress, avoiding node deformation and cracking caused by stress concentration, and significantly improving the overall load resistance of the frame node. Simultaneously, relying on the plug-in positioning structure of the assembly plate 12, the secondary beam 131 and the concrete beam 1 can be quickly and accurately aligned. With the help of the high-strength bolts 321, the connecting plate 32 is assembled and fixed. Then, through the structural reinforcement of the trapezoidal welded plate 33 and the V-shaped support plate 34, the force of the connecting plate 32 is transferred to the connecting node 11 and the interior of the secondary beam 131 respectively, realizing the integrated load-bearing connection of the main and secondary beams. This simplifies the on-site operation process through prefabricated assembly construction and allows the main and secondary beams to form an integral load-bearing structure, effectively resisting the loosening and displacement problems under load.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated connection device for steel reinforcement in a frame structure, comprising a concrete beam (1), characterized in that: The inner wall of the concrete beam (1) is fixedly connected with a steel bar (23). A connection node (11) is fixedly installed on the top of the concrete beam (1). An assembly plate (12) is welded to the left side of the connection node (11). There are two assembly plates (12). The two assembly plates (12) are symmetrically arranged with the connection node (11) as the center. A secondary beam (131) is in contact with the right side of the connection node (11). A second concrete beam (13) is fixedly installed on the right side of the secondary beam (131). The right end of the concrete beam (1) is tightly fitted with an I-shaped casting box (2). A connecting ring (21) is welded to the left side of the I-shaped casting box (2). There are two connecting rings (21). The two connecting rings (21) are symmetrically arranged with the I-shaped casting box (2) as the center. The top of the I-shaped casting box (2) is provided with a casting hole (22). The inner wall of the casting hole (22) is threaded with a sealing bolt (221). The right side of the connecting ring (21) is provided with a threaded hole. The inner wall of the threaded hole is threaded with a high-strength bolt (211). The right side of the connecting ring (21) is fixedly installed with the concrete beam (13) by the high-strength bolt (211). The inner wall of the concrete beam (13) is fixedly connected with a steel bar (24). The left end of the concrete beam (13) is seamlessly fitted with the right end of the I-shaped casting box (2).

2. The prefabricated connection device for steel reinforcement in a frame structure according to claim 1, characterized in that: The left side of the connecting ring (21) is fixedly installed to the right side of the concrete beam (1) by a high-strength bolt (211), and a clamping groove (25) is provided on the left side of the connecting ring (21).

3. The prefabricated connection device for steel reinforcement in a frame structure according to claim 2, characterized in that: The inner wall of the compression groove (25) is fitted with a compression sealing ring (251), and the left side of the compression sealing ring (251) is in contact with the right side of the concrete beam (1).

4. A prefabricated connection assembly for rebar joints in a frame structure according to claim 1, characterized in that: The first reinforcing bar (23) and the second reinforcing bar (24) are both set inside the I-shaped casting box (2), and the first reinforcing bar (23) and the second reinforcing bar (24) are compatible.

5. The prefabricated connection device for rebar joints in a frame structure according to claim 1, characterized in that: The inner wall of the assembly plate (12) is fixedly welded with a reinforcing plate (3), and the number of the reinforcing plates (3) is several, and the several reinforcing plates (3) are arranged in a ring array.

6. The prefabricated connection device for steel reinforcement in a frame structure according to claim 1, characterized in that: The inner wall of the connecting node (11) is fixedly welded with an L-shaped reinforcing plate (31), and there are several L-shaped reinforcing plates (31), which are arranged symmetrically.

7. The prefabricated connection device for steel reinforcement in a frame structure according to claim 1, characterized in that: The inner wall of the assembly plate (12) is inserted into the outer wall of the secondary beam (131). The front of the assembly plate (12) is in contact with a connecting plate (32). The front of the connecting plate (32) is provided with a threaded hole, and the inner wall of the threaded hole is threaded with a high-strength bolt (321).

8. The prefabricated connection device for rebar joints in a frame structure according to claim 7, characterized in that: The connecting plate (32) is fixedly installed to the secondary beam (131) by high-strength bolts (321). A trapezoidal welding plate (33) is welded to the left side of the connecting plate (32). The left side of the trapezoidal welding plate (33) is welded to the left side of the inner wall of the connecting node (11). A V-shaped support plate (34) is welded to the right side of the connecting plate (32). The outer wall of the V-shaped support plate (34) is welded to the inner wall of the secondary beam (131).

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