A replaceable joint for concrete beams and columns with magnification effect

Abstract

This utility model discloses a replaceable concrete beam-column joint with a magnifying effect, belonging to the field of building and civil engineering technology. It includes a reinforced concrete beam, a first H-beam, a second H-beam, a prefabricated large gear assembly, and a prefabricated small gear assembly. The first H-beam is located at one end of the reinforced concrete beam, and prefabricated large gear assemblies are located on both sides of the first H-beam. A friction disc is located on the inner side of the prefabricated large gear assembly, and a rubber friction pad is located on the inner side of the friction disc. The prefabricated large gear assembly and the friction disc are connected by a connecting rod, and an energy-dissipating plate is located on the outer side of the prefabricated large gear assembly. The second H-beam is located at one end of the first H-beam. It can absorb seismic energy during an earthquake. The rotation of the H-beam drives the meshing transmission of the prefabricated small gear and large gear, amplifying the rotational displacement of the joint according to the gear ratio and transmitting it to the friction disc to dissipate energy on the friction rubber pad. It is easy to replace when damaged, enabling rapid disassembly and assembly.

Description

Technical Field

[0001] This utility model belongs to the field of building and civil engineering technology, specifically relating to a replaceable joint for concrete structural beams and columns with an enlarged effect. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In the fields of architecture and civil engineering, the design and construction of structural beam-column joints are crucial for ensuring the overall stability and load-bearing capacity of buildings. Traditionally, beam-column joints are typically fixed using methods such as welding, bolting, or cast-in-place concrete. These methods have certain limitations during construction, such as long construction periods, high costs, and complex on-site operations. Furthermore, with the continuous changes and updates in building functions, higher demands are being placed on the flexibility and maintainability of building structures.

[0004] In earthquake-prone areas, structural joints, as key components for load transfer, are of paramount importance in terms of seismic performance. While traditional beam-column joint designs can guarantee basic load-bearing capacity, they often suffer from insufficient energy dissipation capacity, concentrated damage, and difficulties in post-earthquake repair during strong earthquakes, making it difficult to meet the high seismic performance requirements of modern building structures.

[0005] Currently, common methods for improving the seismic performance of nodes include: Energy dissipation through the plastic deformation of steel: This involves installing energy-dissipating elements (such as shear plates, buckling-restrained braces, etc.) in the joint area, utilizing the hysteretic deformation of low-yield-point steel after it enters plasticity to absorb seismic energy. While this method is effective in dissipating energy, significant plastic deformation of the elements often indicates irreversible damage, typically requiring complete replacement after an earthquake and even affecting the restoration of structural function, resulting in high maintenance costs and long repair cycles.

[0006] Energy dissipation can be achieved using friction or viscoelastic materials, such as friction dampers or viscoelastic dampers. Frictional energy dissipation relies on the relative slippage of the contact surfaces and exhibits stable and repeatable energy dissipation characteristics; viscoelastic materials dissipate energy through their hysteresis effect. However, these devices often require relatively large relative displacements or velocities to fully realize their energy dissipation efficiency. When the rotational displacement of the node is limited, their energy dissipation potential cannot be fully utilized, limiting their application in conventional nodes.

[0007] In other words, the current concrete beam-column joints are not seismically resistant enough and cannot absorb seismic energy during an earthquake. Although some joints can absorb seismic energy, they will suffer significant damage and are difficult to replace after damage. Utility Model Content

[0008] To address the aforementioned problems, this utility model provides a replaceable joint for concrete structural beams and columns with a magnifying effect. It can absorb seismic energy during an earthquake. The rotation of the I-beam drives the meshing transmission of prefabricated small and large gears, amplifying the rotational displacement of the joint according to the gear ratio and transmitting it to the friction disc to dissipate energy on the friction rubber pad. Furthermore, it is easy to replace after damage, enabling rapid disassembly and assembly.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: A replaceable joint for concrete structural beams and columns with a magnifying effect includes a reinforced concrete beam, a first I-beam, a second I-beam, a prefabricated large gear assembly, and a prefabricated small gear assembly. A first I-beam is provided at one end of the reinforced concrete beam. Precast large gear assemblies are provided on both sides of the first I-beam. A friction disk is provided on the inner side of the precast large gear assembly, and a rubber friction pad is provided on the inner side of the friction disk. The precast large gear assembly and the friction disk are connected by a connecting rod. An energy-dissipating plate is provided on the outer side of the precast large gear assembly. A second I-beam is provided at one end of the first I-beam. Precast small gear assemblies are provided on both sides of the second I-beam, and the precast small gear assemblies mesh with the precast large gear assembly.

[0010] As a further technical solution, one end of the second I-beam is cast onto one end of the reinforced concrete column, making the second I-beam and the reinforced concrete column a single unit.

[0011] As a further technical solution, one end of the second I-beam and the energy-dissipating plate is connected by a first high-strength bolt, and several first high-strength bolts are spaced apart.

[0012] As a further technical solution, the second I-beam and the prefabricated pinion assembly are connected by a second high-strength bolt, with several of the second high-strength bolts spaced apart.

[0013] As a further technical solution, the first I-beam and one side of the rubber friction pad are in close contact, and the friction disc and the other side of the rubber friction pad are in close contact.

[0014] As a further technical solution, the two ends of the connecting rod are provided with threads, and the connecting rod passes through the rubber friction pad, the first I-beam and the prefabricated large gear assembly in sequence.

[0015] As a further technical solution, the prefabricated large gear assembly and the connecting rod are connected by threads.

[0016] As a further technical solution, one end of the first I-beam is cast into a reinforced concrete beam, making the first I-beam and the reinforced concrete beam a single unit.

[0017] As a further technical solution, the other end of the energy-consuming plate is connected to a reinforced concrete beam via a third high-strength bolt.

[0018] As a further technical solution, bolt holes are provided at both ends of the energy-consuming board, and several square holes are provided in the middle of the energy-consuming board.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are: This invention possesses energy dissipation capabilities. During an earthquake, the rotation of the second I-beam drives the meshing transmission of a prefabricated small gear and a large gear. The rotational displacement of the node is amplified according to the tooth ratio and transmitted to the friction disk to dissipate energy against the friction rubber pad. The precise matching of the gear module and the number of teeth creates a mechanical amplification effect, significantly improving the friction energy dissipation efficiency. The displacement amplification mechanism stimulates the reciprocating sliding of the friction disk and the rubber friction pad, utilizing the coupling effect of the friction coefficient and contact pressure to achieve efficient energy dissipation.

[0020] This invention features a dual energy dissipation system working synergistically. The front and rear energy-dissipating steel plates, made of low-yield steel, absorb seismic energy through shear hysteresis deformation, forming the first line of energy dissipation defense through their plastic deformation capacity and ductility. A composite energy-dissipating module, consisting of a friction disk driven by a gear amplification system and a rubber pad, forms the second energy dissipation mechanism through frictional dissipation and viscoelastic hysteresis. These two energy dissipation methods complement each other, resulting in better dissipation of seismic energy.

[0021] The various structures of this utility model have strong applicability. The energy-consuming plate and friction components can be quickly disassembled and assembled using high-strength bolts. After an earthquake, only damaged components need to be replaced, which significantly improves maintenance efficiency. It is easy to disassemble and enhances the seismic toughness of the overall structure. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 This is a front view of the overall structure of a replaceable joint between a concrete beam and column with magnification, according to the present invention. Figure 2 This is a magnified schematic diagram of the internal structure of a replaceable joint in a concrete beam-column structure according to the present invention. Figure 3 This is a schematic diagram of the left-side connection of a replaceable joint concrete column in a concrete structure beam-column structure with magnification, according to the present invention. Figure 4 This is a schematic diagram of the right-side connection of the right concrete beam of a replaceable node in a concrete structure beam-column structure with magnification, according to the present invention. Figure 5 This is a schematic diagram of a magnified component of a concrete structure beam-column with replaceable node size gears that can be magnified. Figure 6 This is a schematic diagram of a replaceable node energy-dissipating plate for concrete beams and columns with magnification according to the present invention. Figure 7 This is a magnified schematic diagram of the replaceable node connecting rod and gear connection of a concrete structural beam and column according to this utility model. Figure 8 This is a schematic diagram of a prefabricated large gear assembly with a magnified view of a replaceable node in a concrete beam-column structure according to the present invention. In the diagram: 1. Reinforced concrete column; 2. Reinforced concrete beam; 31. First I-beam; 32. Second I-beam; 4. Energy dissipation plate; 5. Precast large gear assembly; 6. Precast small gear assembly; 7. Friction disc; 8. Rubber friction pad; 9. Connecting rod; 101. First high-strength bolt; 102. Second high-strength bolt; 103. Third high-strength bolt. Detailed Implementation

[0024] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a replaceable joint for concrete structural beams and columns with an enlarged effect, such as... Figure 1 As shown, it includes a reinforced concrete beam 2, a first I-beam beam 31, a second I-beam beam 32, a prefabricated large gear assembly 5, and a prefabricated small gear assembly 6; A first I-beam 31 is provided at one end of the reinforced concrete beam 2. Precast large gear assemblies 5 are provided on both sides of the first I-beam 31. Friction discs 7 are provided on the inner side of the precast large gear assemblies 5. Rubber friction pads 8 are provided on the inner side of the friction discs 7. The precast large gear assemblies 5 and the friction discs 7 are connected by connecting rods 9. Energy dissipation plates 4 are provided on the outer side of the precast large gear assemblies 5. A second I-beam 32 is provided at one end of the first I-beam 31. Precast small gear assemblies 6 are provided on both sides of the second I-beam 32. The precast small gear assemblies 6 and the precast large gear assemblies 5 mesh with each other.

[0026] Specifically, energy dissipation is achieved through the coordinated operation of prefabricated large gear assembly 5, prefabricated small gear assembly 6, friction disk 7, and rubber friction pad 8. During an earthquake, the rotation of the second I-beam 32 drives the meshing transmission between the prefabricated small gear and the large gear, amplifying the node rotational displacement according to the tooth ratio and transmitting it to the friction disk 7 to dissipate energy on the friction rubber pad. The precise matching of the gear module and the number of teeth creates a mechanical amplification effect, significantly improving the friction energy dissipation efficiency. The displacement amplification mechanism stimulates the reciprocating sliding of the friction disk 7 and the rubber friction pad 8, utilizing the coupling effect of the friction coefficient and contact pressure to achieve efficient energy dissipation.

[0027] Displacement amplification is achieved by the left small gear rotating at the same angle as the right large gear rotating at the same angle. The coefficient of friction is the friction of the rubber pad itself. When the gear rotates, the rubber pad will deform due to friction, thus achieving contact pressure.

[0028] Specifically, such as Figure 5 As shown, the prefabricated large gear assembly 5 is a gear, and the prefabricated small gear assembly 6 is a small gear and a supporting steel plate. The small gear is mounted on the supporting steel plate and is rotatably connected to the supporting steel plate. One end of the small gear meshes with the large gear. During an earthquake, the node generates a rotational displacement, and the small gear rotates, causing the large gear to rotate. This causes the friction disk 7 and the rubber pad to dissipate energy through friction, thereby reducing the energy generated by the rotational displacement.

[0029] One end of the second I-beam is cast into one end of the reinforced concrete column 1, making the second I-beam and the reinforced concrete column 1 a single unit. The second I-beam and one end of the energy-dissipating plate 4 are connected by a first high-strength bolt 101, with several first high-strength bolts 101 spaced apart.

[0030] Specifically, such as Figure 3 and Figure 4 As shown, the connection method between the energy dissipation plate 4 and the right-side reinforced concrete beam 2 and the second I-beam 32 is as follows: Before pouring concrete after binding the reinforcing cage, holes for the first high-strength bolt 101 need to be reserved at the beam end of the reinforced concrete beam 2. The energy dissipation plate 4 and the first high-strength bolt 101 are prefabricated in the factory. The energy dissipation plate 4 is fixed on both sides of the reinforced concrete beam 2 and the second I-beam 32 respectively. The connection between the energy dissipation plate 4 and the reinforced concrete beam 2 is completed by the first high-strength bolt 101 passing through the reserved holes.

[0031] One end of the first I-beam 31 is cast into the reinforced concrete beam 2, making the first I-beam 31 and the reinforced concrete beam 2 a whole.

[0032] Specifically, the connection method between the first I-beam 31 and the reinforced concrete beam 2 is as follows: when binding the reinforcing cage, the first I-beam 31 and the reinforcing cage of the reinforced concrete beam 2 are bound together according to the position of the first I-beam 31, and finally concrete is poured to form an integral structure.

[0033] like Figure 2 As shown, the connection method between the second I-beam 32 and the reinforced concrete column 1 is as follows: when the second I-beam 32 and the reinforced concrete column 1 are tied together with the reinforcement cage, the second I-beam 32 and the reinforcement cage of the reinforced concrete column 1 are tied together according to the position of the second I-beam 32, and finally the concrete is poured to form an integral structure.

[0034] The casting method makes the structure strong in integrity, with no obvious joints between components, which can share the load, reduce the risk of damage caused by weak connections, improve structural stability and safety, and effectively enhance the building's lateral force resistance.

[0035] The second I-beam and the prefabricated pinion assembly 6 are connected by a second high-strength bolt 102, with several second high-strength bolts 102 spaced apart.

[0036] Specifically, such as Figure 2 and Figure 4 As shown, the prefabricated pinion assembly 6 is connected to the second I-beam 32 by means of second high-strength bolts 102 on both sides of the web of the second I-beam 32. The prefabricated pinion assembly 6 is prefabricated in the factory for easy replacement in case of damage.

[0037] The first I-beam and one side of the rubber friction pad 8 are in close contact, and the friction disc 7 and the other side of the rubber friction pad 8 are in close contact. The connecting rod 9 has threads at both ends and passes sequentially through the rubber friction pad 8, the first I-beam 31, and the prefabricated large gear assembly 5. The prefabricated large gear assembly 5 and the connecting rod 9 are connected by threads.

[0038] Specifically, the connection between the prefabricated large gear assembly 5, the friction disc 7, and the rubber friction pad 8 is as follows: the rubber friction pad 8 is arranged on both sides of the web of the I-beam, and the three are connected by a connecting rod 9. The prefabricated friction disc 7 overlaps the protruding square bolt hole of the large gear assembly, and then is threadedly connected to the connecting rod 9. It is necessary to ensure that the tightening direction of the thread is opposite to the direction of rotation of the I-beam driven by the reinforced concrete column 1. The opposite rotation direction is to prevent the bolts from loosening when the large gear rotates. The rotation of the I-beam is caused by the swaying of the concrete column under the action of an earthquake, which drives the I-beam to rotate. The prefabricated large gear assembly 5, the friction disc 7, and the rubber friction pad 8 are all prefabricated in the factory for easy replacement in case of damage.

[0039] The other end of the energy-dissipating plate 4 is connected to the reinforced concrete beam 2 by a third high-strength bolt 103.

[0040] Specifically, the connection between the energy-dissipating plate 4 and the reinforced concrete beam 2 is ensured by a third high-strength bolt 103. The energy-dissipating plate 4 and the prefabricated gear assembly work together to achieve a synergistic effect of a dual energy-dissipating system. The front and rear energy-dissipating steel plates are made of low-yield steel, absorbing seismic energy through shear hysteresis deformation; their plastic deformation capacity and ductility form the first line of energy dissipation defense. The friction disk 7 driven by the gear amplification system and the rubber pad form a composite energy-dissipating module, forming a second energy-dissipating mechanism through frictional dissipation and viscoelastic hysteresis. The two energy-dissipating methods complement each other, better dissipating seismic energy.

[0041] Bolt holes are provided at both ends of the energy-consuming plate 4, and several square holes are provided in the middle of the energy-consuming plate 4.

[0042] Specifically, such as Figure 6 As shown, the energy dissipation plate 4 and the friction assembly are quickly disassembled and assembled using high-strength bolts. The friction assembly consists of a friction disc 7, a rubber friction pad 8, a large gear, and a small gear. After an earthquake, only the damaged components need to be replaced, significantly improving maintenance efficiency. It is easy to disassemble and enhances the overall structure's seismic toughness.

[0043] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A concrete structural beam-column replaceable joint having amplification effect, characterized in that, It includes reinforced concrete beams, a first I-beam, a second I-beam, prefabricated large gear assemblies, and prefabricated small gear assemblies; A first I-beam is provided at one end of the reinforced concrete beam. Precast large gear assemblies are provided on both sides of the first I-beam. A friction disk is provided on the inner side of the precast large gear assembly, and a rubber friction pad is provided on the inner side of the friction disk. The precast large gear assembly and the friction disk are connected by a connecting rod. An energy-dissipating plate is provided on the outer side of the precast large gear assembly. A second I-beam is provided at one end of the first I-beam. Precast small gear assemblies are provided on both sides of the second I-beam, and the precast small gear assemblies mesh with the precast large gear assembly.

2. The replaceable joint of the concrete structure beam column with amplification effect according to claim 1, characterized in that, One end of the second I-beam is cast onto one end of the reinforced concrete column, making the second I-beam and the reinforced concrete column a single unit.

3. The replaceable joint of the concrete structure beam column with amplification effect according to claim 1, characterized in that, The second I-beam and the energy-dissipating plate are connected at one end by a first high-strength bolt, and several first high-strength bolts are spaced apart.

4. The replaceable joint of a concrete structure beam column with amplification effect according to claim 1, characterized in that, The second I-beam and the prefabricated pinion assembly are connected by a second high-strength bolt, which is spaced out in several places.

5. The replaceable joint of a concrete structure beam column with amplification effect according to claim 1, characterized in that, The first I-beam and one side of the rubber friction pad are in close contact, and the friction disc and the other side of the rubber friction pad are in close contact.

6. The replaceable joint of a concrete structure beam column with amplification effect according to claim 1, characterized in that, The connecting rod is threaded at both ends and passes through the rubber friction pad, the first I-beam and the prefabricated large gear assembly in sequence.

7. A replaceable joint for a reinforced concrete beam-column with amplification effect according to claim 6, characterized in that, The prefabricated large gear assembly and the connecting rod are connected by threads.

8. The replaceable joint of a concrete structure beam column with amplification effect according to claim 1, characterized in that, One end of the first I-beam is cast into the reinforced concrete beam, making the first I-beam and the reinforced concrete beam a single unit.

9. A replaceable joint for a reinforced concrete beam-column with amplification effect according to claim 8, characterized in that, The other end of the energy-consuming plate is connected to a reinforced concrete beam via a third high-strength bolt.

10. The replaceable joint of a concrete structure beam column with amplification effect according to claim 1, characterized in that, The energy-consuming board has bolt holes at both ends and several square holes in the middle.

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