Concrete-filled steel tube composite column-concrete beam fabricated joint with energy consumption function

Abstract

The utility model discloses a concrete-filled steel tube composite column-concrete beam assembly type joint with an energy consumption function. The joint comprises a concrete-filled steel tube composite column, a hybrid beam and a plurality of energy consumption devices. The concrete-filled steel tube composite column comprises a concrete-filled steel tube core column and a steel bar composite layer, the hybrid beam comprises a reinforced concrete beam, and one side of the reinforced concrete beam is fixedly connected with a second external steel end plate; the energy consumption device comprises a steel sleeve, a plurality of porous energy consumption plates, an end plate and a central pipe. Compared with a traditional cast-in-place mode, the construction process is greatly simplified, the workload and the construction time of a construction site are effectively reduced, and the construction efficiency and the quality stability are improved. The utility model provides a novel replaceable energy consumption device which can effectively absorb and disperse energy under the action of an earthquake and reduce the vibration response of a building structure, so that the anti-seismic safety of the whole building is improved, and the novel replaceable energy consumption device has the characteristics of detachability and replaceability and is convenient for site construction and later maintenance.

Description

Technical Field

[0001] This utility model relates to the field of structural engineering technology, specifically to an energy-dissipating steel-concrete composite column-concrete beam prefabricated joint. Background Technology

[0002] Because prefabricated building components need to be prefabricated in factories and then simply processed on-site, they can be installed quickly, greatly optimizing the construction cycle and reducing problems such as noise, pollution, maintenance, and high costs associated with on-site installation. In recent years, prefabricated buildings have gradually gained widespread attention and application. However, compared to cast-in-place concrete structures, prefabricated building components lack reliable connections, resulting in severe damage during earthquakes and difficulty in rapid repair afterward. To address these issues, traditional seismic design typically strengthens the connection strength of components and relies on the structure's inherent seismic performance to resist earthquake forces—a passive, "head-on" approach. If the structure's materials have poor damping characteristics and limited energy dissipation, most energy will remain within the structure, easily leading to large displacements and internal force responses, increasing the risk of damage. Secondly, the lack of adjustable energy dissipation mechanisms in the structure results in fixed energy dissipation capacity, leading to accumulated damage in small earthquakes and inadequate response to large earthquakes. It also exhibits weak adaptability to changes in earthquake frequency. If resonance occurs, the structural response amplifies dramatically without any countermeasures, making it susceptible to severe damage.

[0003] Later research revealed that additional energy-dissipating devices can absorb the energy transmitted to the structure by an earthquake, reducing the seismic response of the main structure or mitigating its damage, thus achieving the goal of earthquake resistance. Therefore, applying energy-dissipating devices to beam-column joints and developing new prefabricated energy-dissipating joints of steel-concrete composite columns and concrete beams can significantly improve the construction efficiency and seismic performance of prefabricated buildings.

[0004] Currently, in common construction methods, prefabricated steel-concrete composite columns and concrete beams are usually connected by cast-in-place construction. This type of joint often has the following problems:

[0005] (1) During the cast-in-place operation, the construction process is quite complicated, requiring a lot of on-site formwork, rebar tying and concrete pouring. This not only consumes a lot of manpower, material resources and time costs, but also easily leads to uneven node quality due to the complexity of on-site construction conditions and the difference in the technical level of construction personnel.

[0006] (2) During the hardening process of concrete, cast-in-place joints are prone to stress concentration in the joint area due to shrinkage and creep, which may lead to cracks and have an adverse effect on the integrity and durability of the structure.

[0007] (3) Ordinary node forms have certain limitations in terms of seismic performance. Under strong external forces such as earthquakes, their energy dissipation capacity is relatively weak, making it difficult to effectively disperse and absorb earthquake energy, thereby increasing the risk of the structure being severely damaged in earthquake disasters and failing to fully meet the increasingly higher requirements of modern buildings for structural seismic safety.

[0008] In summary, the traditional cast-in-place connection method between steel-concrete composite columns and reinforced concrete beams suffers from a series of drawbacks, including complex procedures, difficulty in quality control, susceptibility to stress concentration, and poor seismic performance. These problems not only restrict construction efficiency to some extent but also pose potential threats to the safety and durability of the structure, making it difficult to meet the increasingly complex needs and high standards of modern construction engineering. Therefore, it is necessary to explore and develop more advanced, efficient, and reliable steel-concrete composite column-concrete beam assembly technologies and joint types to promote the continuous progress and innovative development of building structural technology. Summary of the Invention

[0009] The purpose of this invention is to provide an energy-dissipating steel-concrete composite column-concrete beam prefabricated joint, incorporating replaceable energy-dissipating devices into the joint. This not only significantly improves the overall performance and seismic resistance of the structure, but also enables rapid repair after an earthquake by replacing the energy-dissipating devices, thus overcoming the shortcomings of existing technologies.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] This utility model provides an energy-dissipating prefabricated joint of steel-concrete composite column-concrete beam, including a steel-concrete composite column, a hybrid beam, and multiple energy-dissipating devices. The steel-concrete composite column includes a steel-concrete core column and a reinforced concrete composite layer. The steel-concrete core column is formed by injecting high-strength concrete into the interior of a steel tube and is located at the center of the steel-concrete composite column. The reinforced concrete composite layer is formed by pouring multiple longitudinal bars through reinforced concrete, and the steel-concrete core column is fixedly connected to the reinforced concrete composite layer through the pouring of reinforced concrete. A first external steel end plate is fixedly connected to one side of the steel-concrete composite column through longitudinal bars.

[0012] The hybrid beam includes a reinforced concrete beam and a second external steel end plate is fixedly connected to one side of the reinforced concrete beam.

[0013] The energy-consuming device includes a steel sleeve, multiple perforated energy-consuming plates, end plates, and a central tube. The multiple perforated energy-consuming plates are fixedly connected around the central tube and then connected to the outside of the steel sleeve through fillet welds. The two ends of the central tube are connected to end plates, and the end plates are provided with multiple second through holes. The two ends of the energy-consuming device are respectively detachably connected to the first external steel end plate and the second external steel end plate through the second through holes via fixing components.

[0014] Furthermore, the first external steel end plate includes a first steel section and a first rectangular steel plate. The first end of the first steel section is cut to form an arc end, and the arc end is fixedly connected to the steel pipe after being attached to it. A first through hole is provided on the flange of the first end of the first steel section. The longitudinal reinforcement passes through the first through hole and is fixedly connected to the steel pipe concrete composite column. The second end of the first steel section is welded with a first rectangular steel plate containing bolt holes, and the first angle steel is used to reinforce the first steel section and the first rectangular steel plate.

[0015] Furthermore, the second external steel end plate includes a second steel section and a second rectangular steel plate. The flange of the first end of the second steel section is fixedly connected to the reinforcing bars inside the reinforced concrete beam. The second end of the second steel section is welded with a second rectangular steel plate containing bolt holes, and the second angle steel is used to reinforce the relationship between the second steel section and the second rectangular steel plate.

[0016] Furthermore, one end of the energy-consuming device is detachably connected to the first rectangular steel plate through the second through hole via a fixing component, and the other end of the energy-consuming device is detachably connected to the second rectangular steel plate through the second through hole via a fixing component, wherein the fixing component is a high-strength bolt.

[0017] Furthermore, there are two energy-consuming devices, and a connecting plate is provided between the two energy-consuming devices. The two ends of the connecting plate are respectively connected to the first external steel end plate and the second external steel end plate, and the connecting plate is connected by a pin.

[0018] Furthermore, a friction pad is provided at the pin.

[0019] Furthermore, the porous energy-consuming plate is provided with multiple holes.

[0020] Furthermore, one end of the porous energy-dissipating plate is cut into a smooth-transition chamfer to avoid stress concentration.

[0021] Furthermore, the steel pipe is a cold-formed high-strength thin-walled round steel pipe with a strength grade not lower than Q420.

[0022] Furthermore, the strength grade of the core high-strength concrete is not lower than C60.

[0023] Compared with the prior art, the present invention has the following beneficial technical effects:

[0024] This invention proposes an energy-dissipating prefabricated joint between a steel-concrete composite column and a concrete beam. Compared to traditional cast-in-place methods, this significantly simplifies the construction process, effectively reduces on-site workload and construction time, and improves construction efficiency and quality stability. Furthermore, this invention provides a novel replaceable energy-dissipating device that can effectively absorb and disperse energy under seismic loads, mitigating the vibration response of the building structure and thus improving the overall seismic safety of the building. It is also detachable and replaceable, facilitating on-site construction and subsequent maintenance. Compared to traditional connection methods, this method not only reduces reliance on concrete pouring during construction but also effectively reduces on-site complexity and construction difficulty, thereby improving construction efficiency.

[0025] Specifically, the energy-consuming device provided by this utility model is made of ordinary steel, which is low in cost, widely available, and can be mass-produced. Furthermore, the device has a simple structure and a relatively simple manufacturing process. For example, the steel sleeve adopts a unique one-piece molded slotted design, and the connection between the perforated energy-consuming plate and the steel sleeve is achieved through external welding. This greatly reduces the complexity and difficulty of welding, effectively reduces the number of defective products caused by welding errors, thereby significantly improving the yield rate of components and ensuring the overall quality and production efficiency of the product.

[0026] Specifically, the energy-consuming device provided by this utility model has a clearer energy-consuming mechanism compared to traditional energy-consuming components. For example, the porous energy-consuming plate adopts an open-hole design and uses steel with lower yield strength. Steel with lower yield strength is more likely to undergo plastic deformation under stress, resulting in a more significant energy-consuming effect.

[0027] This invention also has high adaptability and can be widely applied to multi-story and high-rise prefabricated buildings, especially suitable for building design and construction in high-earthquake-risk areas. By optimizing the joint connection between reinforced concrete composite columns and hybrid beams, this invention improves the durability and safety of buildings while ensuring structural stability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an energy-consuming steel-concrete composite column-concrete beam prefabricated node according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the steel-concrete composite column-concrete prefabricated node connection structure in an embodiment of this utility model.

[0030] Figure 3 This is a cross-sectional view of the connection between the first external steel end plate and the steel-concrete composite column in an embodiment of this utility model.

[0031] Figure 4This is a cross-sectional view of the connection between the second external steel end plate and the hybrid beam in an embodiment of this utility model.

[0032] Figure 5 This is a schematic diagram of the energy-consuming device in an embodiment of the present invention.

[0033] Figure 6 This is a cross-sectional schematic diagram of the energy-consuming device in an embodiment of this utility model.

[0034] In the diagram, 1. Steel-concrete composite column; 2. Hybrid beam; 3. Energy dissipation device; 4. Connecting plate; 5. Steel sleeve; 6. Perforated energy dissipation plate; 7. End plate; 8. Central tube; 9. Chamfer; 10. Fillet weld; 11. Second through hole; 12. Steel pipe; 13. Core high-strength concrete; 14. Reinforced concrete; 15. First external steel end plate; 16. Second external steel end plate; 17. High-strength bolt; 18. Reinforced concrete beam; 19. Curved end; 20. First through hole; 21. First rectangular steel plate; 22. First angle steel; 23. Second section steel; 24. Second rectangular steel plate; 25. Second angle steel; 26. Friction pad; 27. Longitudinal reinforcement; 28. First section steel. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] The purpose of this invention is to provide an energy-consuming steel-concrete composite column-concrete beam prefabricated joint, which can effectively shorten the construction cycle, improve the shortcomings of existing construction methods, and promote the development of prefabricated buildings.

[0038] See Figures 1 to 3 It includes a steel-concrete composite column 1, a hybrid beam 2, and multiple energy-consuming devices 3. The number of energy-consuming devices 3 can be selected according to the specific circumstances of the actual application.

[0039] The steel-concrete composite column 1 includes a steel-concrete core column and a reinforced composite layer. The steel-concrete core column is formed by injecting core high-strength concrete 13 into the inside of the steel pipe 12 and is located at the center of the steel-concrete composite column 1. The reinforced composite layer is formed by pouring multiple longitudinal bars 27 through reinforced concrete 14, and the steel-concrete core column is also fixedly connected to the reinforced composite layer through the pouring of reinforced concrete 14. A first external steel end plate 15 is fixedly connected to one side of the steel-concrete composite column 1 through longitudinal bars 27 and is prefabricated in the factory.

[0040] The hybrid beam 2 includes a reinforced concrete beam 18, with a second external steel end plate 16 fixedly connected to one side of the reinforced concrete beam 18. It is prefabricated in batches in the factory. At the construction site, the two ends of the two replaceable energy-consuming devices 3 are respectively connected to the first external steel end plate 15 and the second external steel end plate 16 with high-strength bolts 17. A connecting plate 4 is set between the first external steel end plate 15 and the second external steel end plate 16 to connect the steel tube concrete composite column 1 and the hybrid beam 2. The welding position of the connecting plate 4 is located between the two energy-consuming devices 3. The connecting plate 4 can be connected by a pin shaft. The purpose is to ensure the safety of the structure even if the energy-consuming device 3 breaks and fails.

[0041] like Figure 3 As shown, the first external steel end plate 15 includes a first steel section 28 and a first rectangular steel plate 21. The first end of the first steel section 28 is cut to form an arc end 19, so that the arc end 19 can fit with the curvature of the steel pipe 12 and be welded to the steel pipe 12. A hole is made at the first end of the first steel section 28 to obtain a first through hole 20. The longitudinal reinforcement 27 passes through the first through hole 20 and is fixedly connected to the steel pipe concrete composite column 1. The purpose is to strengthen the connection between the first steel section 28 and the steel pipe concrete composite column 1. The second end of the first steel section 28 is welded with a first rectangular steel plate 21 containing bolt holes, and the first angle steel 22 is used to reinforce the connection between the first steel section 28 and the first rectangular steel plate 21.

[0042] like Figure 4 As shown, the second external steel end plate 16 includes a second steel section 23 and a second rectangular steel plate 24. A portion of the steel reinforcement skeleton without stirrups is reserved at one end of the reinforced concrete beam 18. The steel reinforcement inside the reinforced concrete beam 18 is welded to the flange inside the first end of the second steel section 23. The second end of the second steel section 23 is welded with the second rectangular steel plate 24 containing bolt holes, and the second angle steel 25 is used to reinforce the relationship between the second steel section 23 and the second rectangular steel plate 24.

[0043] See Figure 5 and Figure 6 The energy-consuming device 3 includes a steel sleeve 5, multiple perforated energy-consuming plates 6, end plates 7, and a central tube 8. The perforated energy-consuming plate 6 is made by cutting and drilling holes in a whole rectangular thin steel plate, and one end of the perforated energy-consuming plate 6 is cut into a smooth transition chamfer 9 to avoid stress concentration. Eight perforated energy-consuming plates 6 of the same specification are evenly welded around the central tube 8. After welding, they are combined with the grooved steel sleeve 5 and connected to the outside of the steel sleeve 5 through fillet welds 10 to form the main body of the energy-consuming device. Then, end plates 7 with multiple second through holes 11 are connected to both ends of the central tube 8.

[0044] When the energy dissipation device 3 is connected to the steel-concrete composite column 1 and the hybrid beam 2, it is connected through the end plates 7 at both ends of the central tube 8. One end of the energy dissipation device 3 is fixed by passing through the bolt holes of the second through hole 11 and the first rectangular steel plate 21 with high-strength bolts 17 and tightening them with nuts. The other end of the energy dissipation device 3 is fixed by passing through the bolt holes of the second through hole 11 and the second rectangular steel plate 24 with high-strength bolts 17 and tightening them with nuts. This makes the energy dissipation device 3 detachable and replaceable, saving a lot of time for installation and post-earthquake repair.

[0045] Preferably, a friction pad 26 is provided at the pin shaft.

[0046] Preferably, steel pipe 12 is a cold-formed high-strength thin-walled round steel pipe with a strength grade not lower than Q420.

[0047] Preferably, the strength grade of the core high-strength concrete 13 is not lower than C60.

[0048] The energy consumption mechanism of the node of this utility model:

[0049] When external loads are applied to the structure, the energy dissipation device 3 experiences significant stress, and the internal porous energy dissipation plate 6 deforms within its plastic limit. This is because metals possess excellent plastic deformation capabilities; under stress, their internal crystal structure undergoes slippage and rearrangement, thereby absorbing a large amount of energy and buffering the external load. The friction pads 26 installed at the pin shaft generate friction when the steel-concrete composite column 1 and the hybrid beam 2 rotate relative to each other. The friction pads 26 increase this friction, which, under load, dissipates energy at the joint. The main energy dissipation mechanism of the joint is the conversion and dissipation of external mechanical energy through the combined action of the metal's plastic deformation and friction.

[0050] Fabrication of the steel-concrete composite column 1: The first steel section 28 is processed, with its first end cut into an arc-shaped end 19. This allows for better welding of the first steel section 28 to the steel pipe 12. The arc shape helps improve the fit and strength of the weld, enhancing the overall structural integrity. A first through hole 20 is created in the flange of the first end of the first steel section 28 to facilitate the passage of the longitudinal reinforcement 27, allowing it to be fixedly connected to the first external steel end plate 15. A first rectangular steel plate 21 is welded to the second end of the first steel section 28. The first rectangular steel plate 21 expands the connection surface. After welding, a first angle steel 22 is used to reinforce the connection. The first angle steel 22 enhances the strength and stability of the connection between the first steel section 28 and the first rectangular steel plate 21, preventing problems such as weld detachment during stress. After completing the above operations, reinforced concrete 14 is poured to form the steel-concrete composite column 1.

[0051] Fabrication of Hybrid Beam 2: Weld the first end of the second steel section 23 to the reinforcing bars inside the reinforced concrete beam 18, and weld the second rectangular steel plate 24 to the second end of the second steel section 23. After welding, reinforce the connection with the second angle steel 25 to ensure the reliability of the connection between the second steel section and the second rectangular steel plate. After completing the above connection work, pour concrete to make the concrete tightly bond with the reinforced concrete beam 18 and the second steel section 23 to form the hybrid beam 2.

[0052] The prefabricated steel-concrete composite column 1 and hybrid beam 2 are transported to the construction site. The prefabricated components are produced in the factory, which can ensure quality and precision and reduce on-site construction time and difficulty.

[0053] A connecting plate 4 is welded between the first external steel end plate 15 and the second external steel end plate 16, and connected by a pin. A friction pad 26 is also installed at the pin. The welded connecting plate 4 enhances the overall integrity of the connection, while the pin connection provides a certain degree of rotational flexibility. The friction pad 26 generates friction when rotating between the steel-concrete composite column 1 and the composite beam 2. This friction dissipates energy when the structure is subjected to external loads, improving the structure's seismic performance.

[0054] The energy dissipation device 3 is detachably connected at both ends to the first rectangular steel plate 21 and the second rectangular steel plate 24 using high-strength bolts 17. The high-strength bolt connection provides sufficient tightening force to ensure the reliability of the connection, while the detachable connection facilitates later maintenance and replacement of the energy dissipation device 3. Through this connection method, the energy dissipation device 3 can perform its energy dissipation function when the structure is under stress, converting and dissipating external mechanical energy to protect the main structure.

[0055] This utility model provides an energy-dissipating prefabricated joint between a steel-concrete composite column and a concrete beam, meeting the high assembly rate requirements of modern prefabricated structure construction and effectively overcoming the problems of long construction cycles, insufficient connection strength, and poor seismic performance in traditional cast-in-place or precast concrete structures at connection joints. This joint achieves convenient installation and stable connection through an efficient connection method between the steel-concrete composite column and the hybrid beam. It also integrates an energy dissipation device, which can effectively absorb and dissipate energy under earthquakes or other dynamic loads, reducing the structure's vibration response and improving overall seismic performance. Through optimized design, the joint can be quickly assembled and disassembled, meeting the dual requirements of modern prefabricated buildings for construction efficiency and structural performance.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated joint of steel-concrete composite column-concrete beam with energy-dissipating properties, characterized in that, The system includes a steel-concrete composite column (1), a hybrid beam (2), and multiple energy-consuming devices (3). The steel-concrete composite column (1) includes a steel-concrete core column and a reinforced composite layer. The steel-concrete core column is formed by injecting core high-strength concrete (13) into the interior of a steel pipe (12), and the steel-concrete core column is located at the center of the steel-concrete composite column (1). The reinforced composite layer is formed by pouring multiple longitudinal bars (27) through reinforced concrete (14), and the steel-concrete core column is fixedly connected to the reinforced composite layer through the pouring of reinforced concrete (14). A first external steel end plate (15) is fixedly connected to one side of the steel-concrete composite column (1) through longitudinal bars (27). The hybrid beam (2) includes a reinforced concrete beam (18) and a second external steel end plate (16) is fixedly connected to one side of the reinforced concrete beam (18). The energy-consuming device (3) includes a steel sleeve (5), multiple perforated energy-consuming plates (6), end plates (7) and a central tube (8). The multiple perforated energy-consuming plates (6) are fixedly connected around the central tube (8) and then connected to the outside of the steel sleeve (5) through fillet welds (10). The two ends of the central tube (8) are connected to the end plates (7) and the end plates (7) are provided with multiple second through holes (11). The two ends of the energy-consuming device (3) are respectively detachably connected to the first external steel end plate (15) and the second external steel end plate (16) through the second through holes (11) via fixing components.

2. The prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 1, characterized in that, The first external steel end plate (15) includes a first steel section (28) and a first rectangular steel plate (21). The first end of the first steel section (28) is cut to form an arc end (19), and the arc end (19) is fixedly connected to the steel pipe (12) after being attached. A first through hole (20) is provided on the flange of the first end of the first steel section (28). The longitudinal reinforcement (27) passes through the first through hole (20) and is fixedly connected to the steel pipe concrete composite column (1). The second end of the first steel section (28) is welded with a first rectangular steel plate (21) containing bolt holes, and the first angle steel (22) is used to reinforce the first steel section (28) and the first rectangular steel plate (21).

3. The prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 2, characterized in that, The second external steel end plate (16) includes a second steel section (23) and a second rectangular steel plate (24). The flange of the first end of the second steel section (23) is fixedly connected to the reinforcing bars inside the reinforced concrete beam (18). The second end of the second steel section (23) is welded with the second rectangular steel plate (24) and the second angle steel (25) is used to reinforce the second steel section (23) and the second rectangular steel plate (24).

4. The prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 3, characterized in that, One end of the energy-consuming device (3) is detachably connected to the first rectangular steel plate (21) through the second through hole (11) via a fixing component, and the other end of the energy-consuming device (3) is detachably connected to the second rectangular steel plate (24) through the second through hole (11) via a fixing component. The fixing component is a high-strength bolt (17).

5. A prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 1, characterized in that, There are two energy-consuming devices (3), and a connecting plate (4) is provided between the two energy-consuming devices (3).

6. The prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 1, characterized in that, A friction pad (26) is provided at the pin.

7. A prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 1, characterized in that, The porous energy-consuming plate (6) has multiple holes.

8. A prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 7, characterized in that, One end of the porous energy-consuming plate (6) is cut into a chamfer (9) with a smooth transition to avoid stress concentration.

9. A prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 1, characterized in that, The steel pipe (12) is a cold-formed high-strength thin-walled round steel pipe with a strength grade not lower than Q420.

10. A prefabricated steel-concrete composite column-concrete beam joint with energy dissipation capability according to claim 1, characterized in that, The strength grade of the core high-strength concrete (13) shall not be lower than C60.

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