Self-resetting energy dissipation frame joint based on assembly type hidden bracket

Abstract

The utility model relates to the technical field of building construction, and discloses a self-resetting energy dissipation frame joint based on an assembly type hidden bracket, which comprises a prefabricated steel column, a prefabricated steel beam and a prefabricated bracket, a plurality of positioning grooves are formed in the prefabricated steel column, and one end of the prefabricated bracket penetrates through the positioning grooves and is fixedly connected with the prefabricated steel column; the energy dissipation assembly comprises a friction energy dissipation piece and a self-resetting energy dissipation piece, the prefabricated steel beam and the prefabricated bracket are connected with the friction energy dissipation piece, and the friction energy dissipation piece is used for conducting friction energy dissipation on the bracket joint; the prefabricated steel beam is connected with the prefabricated bracket through the self-resetting energy dissipation piece, and the self-resetting energy dissipation piece is used for conducting self-resetting energy dissipation on the bracket joint. The utility model solves the problem that the structure is damaged due to the fact that the node can generate larger plasticity under the action of an earthquake, and also solves the problems of energy consumption caused by rotation of the node and self-resetting after the earthquake.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a self-resetting energy-consuming frame node based on assembled hidden corbels. Background Art

[0002] Although the current assembled corbel nodes have achieved relatively convenient construction, they cannot achieve self-reset, and there is still room for further improvement in function. On July 4, 2023, the State Intellectual Property Office authorized and announced the utility model patent of "a prefabricated corbel and its node connection structure" (announcement number: CN219298793U). The utility model relates to the field of building construction technology. On the one hand, the utility model provides a prefabricated corbel, including a support structure composed of a top plate, a back plate and a side plate fixed vertically in pairs, the top plate is arranged in the horizontal direction, and the top plate and the back plate are provided with connection holes, which are used for detachable connection with fasteners. On the other hand, a prefabricated corbel node connection structure is provided, including embedded plates, embedded pipes, fasteners and the above-mentioned prefabricated corbels. The corbels of the utility model are prefabricated in the processing plant, which reduces high-altitude welding operations on the one hand and ensures welding quality on the other hand. The defect of this technical solution is that the integrity of the structure is not good. When encountering a strong earthquake, large plastic deformation is prone to occur at the corbel node, and the structure does not have the ability to self-reset. On November 23, 2021, the State Intellectual Property Office authorized and announced a utility model patent for "A side span corbel node connection structure" (announcement number: CN214833719U. The patent scheme discloses a side span corbel node connection structure, including a prefabricated floor slab and a prefabricated wall panel. The side of the prefabricated wall panel is provided with a corbel, and the prefabricated floor slab is placed on the corbel. The prefabricated floor slab is provided with a reserved bolt hole penetrating in the vertical direction, and a bolt is embedded in the corbel; one end of the bolt extends outward from the corbel toward the direction of the prefabricated floor slab, and the bolt is inserted into the reserved bolt hole; the gap between the bolt and the reserved bolt hole is filled with grouting material. The utility model can improve the reliability of the side span corbel node connection structure, but the corbel node connection structure requires reserved bolt holes on the corbel, and the gap between the bolt and the reserved bolt hole needs to be filled with grouting material. The operation is relatively complicated, the connection method has a long construction period, and the construction time is greatly affected by the weather.

[0003] On November 4, 2022, the State Intellectual Property Office authorized and announced the utility model patent of "A prefabricated corbel and its node connection structure" (announcement number: CN217734376U). The utility model relates to the field of building construction technology. The utility model relates to an assembled energy-absorbing corbel node structure, including a steel beam, a steel column, a corbel and an energy-absorbing structure connected between the steel beam and the steel column. The energy-absorbing structure includes a column constraint plate, a beam constraint plate and an energy-absorbing plate. The column constraint plate is connected to the inner side of the vertical steel column with high-strength bolts. The energy-absorbing plate is fixedly connected between the column constraint plate and the beam constraint plate. The energy-absorbing plate is a plate-like structure with wide ends and a narrow middle. The narrow part in the middle is the energy-absorbing section. The width of the end of the energy-absorbing plate is twice the width of the energy-absorbing section. The column constraint plate and the beam constraint plate are provided with transverse protrusions, and grooves are provided at both ends of the energy-absorbing plate. The transverse protrusions are located in the grooves, and the energy-absorbing plate is welded and fixed to the column constraint plate and the beam constraint plate. The energy-absorbing bracket provides rigidity for the beam-column joint during minor earthquakes and replaces the joint to dissipate energy during major earthquakes. It can not only dissipate energy but also protect the beam-column joint. It has a simple structure, is easy to replace, and has excellent seismic performance. The defects of this technical solution are that it is an exposed bracket and is not suitable for residential buildings with high aesthetic requirements. The lack of self-reset components makes it difficult to recover the structural deformation after encountering an earthquake. The structure does not have the ability to self-reset.

[0004] Therefore, there is an urgent need for a self-resetting energy-absorbing frame node based on assembled hidden corbels to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a self-resetting energy-consuming frame node based on assembled hidden corbels to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following solutions: The utility model provides a self-resetting energy-absorbing frame node based on an assembled hidden corbel, comprising a prefabricated steel column, a prefabricated steel beam and a prefabricated corbel;

[0007] The prefabricated steel column is provided with a plurality of positioning grooves, and one end of the prefabricated corbel passes through the positioning groove and is fixedly connected to the prefabricated steel column;

[0008] The energy-absorbing component comprises a friction energy-absorbing part and a self-resetting energy-absorbing part. The prefabricated steel beam and the prefabricated corbel are respectively connected to the friction energy-absorbing parts, and the friction energy-absorbing parts are used to perform friction energy dissipation at the corbel node; the prefabricated steel beam is connected to the prefabricated corbel through the self-resetting energy-absorbing part, and the self-resetting energy-absorbing part is used to perform self-resetting energy dissipation at the corbel node.

[0009] Preferably, the friction energy absorbing part comprises a friction energy absorbing plate, and a plurality of second bolt holes are provided on the adjacent end of the prefabricated steel beam and the prefabricated corbel and on the friction energy absorbing plate, and second high-strength bolts are provided in the second bolt holes.

[0010] Preferably, the self-resetting energy-absorbing component includes a first energy-absorbing plate, a second energy-absorbing plate, a plurality of energy-absorbing bolts and a self-resetting component. The first energy-absorbing plate is located between the top end of the prefabricated corbel and the prefabricated steel beam, and the second energy-absorbing plate is located between the bottom end of the prefabricated steel beam and the prefabricated corbel. The prefabricated steel beam, the prefabricated corbel, the first energy-absorbing plate and the second energy-absorbing plate are all provided with a plurality of energy-absorbing bolt holes, and the energy-absorbing bolts are arranged in the energy-absorbing bolt holes. The prefabricated steel column and the prefabricated corbel are respectively connected to the self-resetting component.

[0011] Preferably, the self-resetting part includes four prestressed steel strands, and one end of the prefabricated steel beam away from the prefabricated steel column is fixedly connected to a fixed steel plate, and four prestressed steel strand holes are opened on the fixed steel plate. One end of the prestressed steel strand passes through the prestressed steel strand holes and is provided with an anchor, and the other end of the prestressed steel strand is fixedly connected to the prefabricated steel column and the prefabricated corbel.

[0012] Preferably, a connecting steel plate is provided on the prefabricated steel beam, a plurality of first bolt holes are provided on the bottom end of the prefabricated steel beam and the connecting steel plate, first high-strength bolts are provided in the first bolt holes, the second energy absorption plate is located between the connecting steel plate and the prefabricated corbel, and the connecting steel plate is connected to the second energy absorption plate and the prefabricated corbel through the energy absorption bolts.

[0013] Preferably, a plurality of angle steel connectors are provided between the prefabricated steel column and the prefabricated corbel, a plurality of third bolt holes are provided on the prefabricated steel column, the prefabricated corbel and the angle steel connector, and third high-strength bolts are provided in the third bolt holes.

[0014] Preferably, a cylindrical block is fixedly connected to the upper end of one side of the prefabricated steel beam close to the prefabricated corbel.

[0015] Preferably, the first energy dissipation plate and the second energy dissipation plate are rubber plates.

[0016] Preferably, the energy-absorbing bolt is an SMA bolt.

[0017] Compared with the prior art, the utility model has the following advantages and technical effects:

[0018] The utility model provides a self-resetting energy-absorbing frame node based on an assembled hidden corbel. The prefabricated corbel is installed on a prefabricated steel column through an installation groove. The prefabricated steel beam is installed with the prefabricated corbel, and is provided with a friction energy-absorbing part and a self-resetting energy-absorbing part. The friction energy-absorbing part and the self-resetting energy-absorbing part are used to dissipate energy and self-reset at the earthquake node. The design of the hidden corbel is more suitable for use in residential buildings with high aesthetic requirements, and solves the problems of poor integrity of the traditional corbel node connection structure, poor seismic performance, easy brittle failure under earthquake action, and complex reinforcement of the beam end and the corbel. The present application solves the problem that the node will produce greater plasticity under the action of an earthquake, thereby causing damage to the structure, and at the same time solves the energy consumption of the node rotation and the self-reset problem after encountering an earthquake. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the prefabricated I-beam column of the utility model;

[0022] Figure 3 This is a schematic diagram of the prefabricated I-beam of the utility model;

[0023] Figure 4 This is a schematic diagram of the prefabricated steel hidden corbel of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the friction energy dissipation plate of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the connecting steel plates of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the first energy dissipation plate of the utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the second energy dissipation plate of the utility model;

[0028] Fig. 9 This is a schematic diagram of the structure of the angle steel connector of the utility model;

[0029] Fig.10 This is a schematic diagram of the structure of the energy-consuming bolt of the utility model;

[0030] Fig.11 This is a schematic diagram of the installation of the prefabricated corbel, prefabricated steel column and prefabricated steel beam of the utility model;

[0031] Among them, 1. prefabricated steel column; 2. prefabricated steel beam; 3. prefabricated corbel; 4. angle steel connector; 5. friction energy absorption plate; 6. connecting steel plate; 7. fixing steel plate; 8. prestressed steel strand; 9. anchor; 10. first energy absorption plate; 11. second energy absorption plate; 12. energy absorption bolt; 13. first high-strength bolt; 14. second high-strength bolt; 15. third high-strength bolt; 16. positioning groove; 17. third bolt hole; 18. energy absorption bolt hole; 19. first bolt hole; 20. second bolt hole; 21. prestressed steel strand hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Reference Figure 1-Figure 11 The utility model provides a self-resetting energy-absorbing frame node based on an assembled hidden corbel, comprising a prefabricated steel column 1, a prefabricated steel beam 2 and a prefabricated corbel 3;

[0035] The prefabricated steel column 1 is provided with a plurality of positioning grooves 16, and one end of the prefabricated corbel 3 passes through the positioning groove 16 and is fixedly connected to the prefabricated steel column 1;

[0036] The energy-absorbing component includes a friction energy-absorbing part and a self-resetting energy-absorbing part. The prefabricated steel beam 2 and the prefabricated corbel 3 are respectively connected to the friction energy-absorbing parts, and the friction energy-absorbing parts are used to perform friction energy dissipation at the corbel node. The prefabricated steel beam 2 is connected to the prefabricated corbel 3 through the self-resetting energy-absorbing part, and the self-resetting energy-absorbing part is used to perform self-resetting energy dissipation at the corbel node.

[0037] According to a further optimized solution, the friction energy absorbing part comprises a friction energy absorbing plate 5 , and a plurality of second bolt holes 20 are provided on the adjacent ends of the prefabricated steel beam 2 and the prefabricated corbel 3 and on the friction energy absorbing plate 5 , and second high-strength bolts 14 are provided in the second bolt holes 20 .

[0038] The friction energy dissipation plate 5 can dissipate energy by plastic deformation as the prefabricated steel beam 2 rotates. At the same time, the setting of the friction energy dissipation plate 5 can also play a good limiting role on the prefabricated steel beam 2 to prevent the prefabricated steel beam 2 from producing excessive horizontal displacement under the action of a large earthquake.

[0039] A further optimized solution is provided, wherein the self-resetting energy absorbing component comprises a first energy absorbing plate 10, a second energy absorbing plate 11, a plurality of energy absorbing bolts 12 and a self-resetting component. The first energy absorbing plate 10 is located between the top end of the prefabricated corbel 3 and the prefabricated steel beam 2, and the second energy absorbing plate 11 is located between the bottom end of the prefabricated steel beam 2 and the prefabricated corbel 3. A plurality of energy absorbing bolt holes 18 are provided on the prefabricated steel beam 2, the prefabricated corbel 3, the first energy absorbing plate 10 and the second energy absorbing plate 11. Energy absorbing bolts 12 are provided in the energy absorbing bolt holes 18. The prefabricated steel column 1 and the prefabricated corbel 3 are respectively connected to the self-resetting component.

[0040] The prefabricated corbel 3 is connected to the prefabricated steel beam 2 by an energy-absorbing bolt 12. When a small earthquake occurs, the energy-absorbing bolt 12 plays a role equivalent to that of an ordinary bolt. When a larger earthquake occurs, the energy-absorbing bolt 12 can be deformed to a certain extent, assisting the friction energy-absorbing plate 5 in absorbing energy and providing a self-resetting effect for the node. When the corbel node is subjected to an upward force, energy is consumed by deformation of the friction energy-absorbing plate 5, the energy-absorbing bolt 12, the first energy-absorbing plate 10 and the second energy-absorbing plate 11. The arrangement of the first energy-absorbing plate 10 and the second energy-absorbing plate 11 provides a certain rotation space for the prefabricated steel beam 2 to rotate upward. After the earthquake, the deformation is restored by the self-resetting function provided by the energy-absorbing bolt 12, the first energy-absorbing plate 10, the second energy-absorbing plate 11 and the self-resetting member. In addition, the friction energy-absorbing plate 5, the energy-absorbing bolt 12, the first energy-absorbing plate 10 and the second energy-absorbing plate 11 can form an integral self-resetting energy-absorbing assembly, which can be quickly disassembled and reinstalled for repair after a stronger earthquake.

[0041] A further optimized solution is provided, in which the self-resetting part includes four prestressed steel strands 8, and one end of the prefabricated steel beam 2 away from the prefabricated steel column 1 is fixedly connected to a fixed steel plate 7, on which four prestressed steel strand holes 21 are provided. One end of the prestressed steel strand 8 passes through the prestressed steel strand hole 21 and is provided with an anchor 9, and the other end of the prestressed steel strand 8 is fixedly connected to the prefabricated steel column 1 and the prefabricated corbel 3.

[0042] The prestressed steel strand 8 provides a self-resetting capability and can bear part of the bending moment under the action of an earthquake.

[0043] Specifically, refer to Figure 1 , Fig.11 The structures of the prefabricated steel column 1, the prefabricated steel beam 2, and the prefabricated corbel 3 on both sides are symmetrical.

[0044] A further optimized solution is provided on the prefabricated steel beam 2, a plurality of first bolt holes 19 are provided on the bottom end of the prefabricated steel beam 2 and the connecting steel plate 6, first high-strength bolts 13 are provided in the first bolt holes 19, the second energy absorbing plate 11 is located between the connecting steel plate 6 and the prefabricated corbel 3, and the connecting steel plate 6 is connected to the second energy absorbing plate 11 and the prefabricated corbel 3 through energy absorbing bolts 12.

[0045] The connecting steel plate 6 can not only play a connecting role but also strengthen the rigidity of the connection between the prefabricated corbel 3 and the prefabricated steel beam 2 .

[0046] According to a further optimization scheme, a plurality of angle steel connectors 4 are provided between the prefabricated steel column 1 and the prefabricated corbel 3 , and a plurality of third bolt holes 17 are provided on the prefabricated steel column 1 , the prefabricated corbel 3 and the angle steel connector 4 , and third high-strength bolts 15 are provided in the third bolt holes 17 .

[0047] The angle steel connector 4 not only plays a connecting role but also strengthens the rigidity of the four plate structures on the prefabricated corbel 3 .

[0048] According to a further optimized solution, a cylindrical block is fixedly connected to the upper end of one side of the prefabricated steel beam 2 close to the prefabricated corbel 3 .

[0049] The cylindrical block is a 1 / 4 cylindrical structure. Under the action of an earthquake, when the corbel node is subjected to an upward force, the prefabricated steel beam 2 will rotate around the edge of the 1 / 4 cylindrical structure.

[0050] According to a further optimized solution, the first energy dissipation plate 10 and the second energy dissipation plate 11 are rubber plates.

[0051] The rubber plate enables the corbel node to deform and dissipate energy during an earthquake and to recover after the earthquake.

[0052] According to a further optimization scheme, the energy-absorbing bolt 12 is an SMA bolt.

[0053] The SMA bolts provide energy dissipation and self-resetting functions for the corbel node, and the entirety can be disassembled and replaced after an earthquake.

[0054] The utility model provides a self-resetting energy-absorbing frame node based on an assembled hidden corbel. When in use, the prefabricated corbel 3 is first inserted into the prefabricated steel column 1 from the four positioning grooves 16, and then the plate of the inserted part is welded to the prefabricated steel column 1. Finally, the angle steel connector 4 is installed on the node of the prefabricated corbel 3 through the third high-strength bolt 15 to further strengthen the connection between the prefabricated corbel 3 and the prefabricated steel column 1. Install the prefabricated steel beam 2: first, the connecting steel plate 6 is installed on the lower end of the prefabricated steel beam 2 and close to the side of the prefabricated corbel 3 with the first high-strength bolt 13; second, the prefabricated steel beam 2 is installed on the prefabricated corbel 3 with an SMA bolt. There are two SMA bolt connection areas, one at the connection between the connecting steel plate 6 and the prefabricated corbel 3, and the other at the connection between the prefabricated steel beam 2 and the prefabricated corbel 3. At the same time, a first energy-absorbing plate 10 and a second energy-absorbing plate 11 are respectively provided before the two connections. Install the friction energy dissipation plate 5, and use the second high-strength bolt 14 to install the friction energy dissipation plate 5 on the prefabricated steel beam 2 and the prefabricated corbel 3. Install the prestressed steel strand 8, and use the anchor 9 to install the prestressed steel strand 8 through the prefabricated steel strand hole 21. There are two areas for installing the prestressed steel strand 8, one is at the upper end of the prefabricated steel beam 2 and close to the side of the prefabricated steel column 1, connecting the prefabricated steel beam 2 and the prefabricated steel column 1. The other is at the lower end of the prefabricated steel beam 2, connecting the prefabricated steel beam 2 and the prefabricated corbel 3.

[0055] The working principle of the utility model is that when encountering an earthquake, when the corbel node is subjected to a downward force, the prefabricated steel beam 2 will rotate around the joint between the prefabricated corbel 3 and the prefabricated steel beam 2, and the friction energy dissipation plate 5 can undergo plastic deformation to dissipate energy along with the rotation of the prefabricated steel beam 2. At the same time, the setting of the friction energy dissipation plate 5 can also play a good limiting role on the prefabricated steel beam 2, preventing the prefabricated steel beam 2 from having excessive horizontal displacement under the action of a large earthquake. The prefabricated corbel 3 is connected to the prefabricated steel beam 2 with SMA bolts. When encountering a small earthquake, the SMA bolt plays a role equivalent to that of an ordinary bolt. When encountering a larger earthquake, the SMA bolt can deform to a certain extent, assisting the friction energy dissipation plate 5 in dissipating energy and providing a self-resetting effect for the node. The prestressed steel strand 8 can provide a certain self-resetting ability when the prefabricated steel beam 2 rotates. Under the action of an earthquake, when the corbel node is subjected to an upward force, the prefabricated steel beam 2 will rotate around the edge of the 1 / 4 cylindrical structure welded on the prefabricated steel beam 2, and consume energy through the deformation of the friction energy absorbing plate 5, the SMA bolt, the first energy absorbing plate 10, and the second energy absorbing plate 11. The setting of the first energy absorbing plate 10 and the second energy absorbing plate 11 provides a certain rotation space for the prefabricated steel beam 2 to rotate upward. After the earthquake, the deformation is restored by the self-resetting function provided by the SMA bolts, rubber and prestressed steel strands 8. In addition, the friction energy absorbing plate 5, the SMA bolts, the rubber and the prestressed steel strands 8 can form an integral self-resetting energy absorbing component, which can be quickly disassembled and reinstalled and repaired after encountering a strong earthquake. All components of this corbel node can be prefabricated in the factory and then transported to the site for assembly. The structure is simple and the installation difficulty is small. The self-resetting energy absorbing component can be quickly replaced after the earthquake, which is in line with the development concept of green buildings.

[0056] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A self-resetting energy-absorbing frame node based on an assembled hidden corbel, comprising a prefabricated steel column (1), a prefabricated steel beam (2) and a prefabricated corbel (3); characterized in that: The prefabricated steel column (1) is provided with a plurality of positioning grooves (16), and one end of the prefabricated corbel (3) passes through the positioning groove (16) and is fixedly connected to the prefabricated steel column (1); The energy dissipation component comprises a friction energy dissipation part and a self-resetting energy dissipation part, wherein the prefabricated steel beam (2) and the prefabricated corbel (3) are respectively connected to the friction energy dissipation part, and the friction energy dissipation part is used to dissipate friction energy at the corbel node; the prefabricated steel beam (2) is connected to the prefabricated corbel (3) via the self-resetting energy dissipation part, and the self-resetting energy dissipation part is used to dissipate self-resetting energy at the corbel node.

2. According to claim 1, a self-resetting energy-absorbing frame node based on an assembled hidden corbel is characterized in that: The friction energy absorbing part comprises a friction energy absorbing plate (5), and a plurality of second bolt holes (20) are provided on the adjacent ends of the prefabricated steel beam (2) and the prefabricated corbel (3) and on the friction energy absorbing plate (5), wherein second high-strength bolts (14) are arranged in the second bolt holes (20).

3. A self-resetting energy-absorbing frame node based on an assembled hidden corbel according to claim 2, characterized in that: The self-resetting energy-absorbing component comprises a first energy-absorbing plate (10), a second energy-absorbing plate (11), a plurality of energy-absorbing bolts (12) and a self-resetting component. The first energy-absorbing plate (10) is located between the top end of the prefabricated corbel (3) and the prefabricated steel beam (2). The second energy-absorbing plate (11) is located between the bottom end of the prefabricated steel beam (2) and the prefabricated corbel (3). The prefabricated steel beam (2), the prefabricated corbel (3), the first energy-absorbing plate (10) and the second energy-absorbing plate (11) are all provided with a plurality of energy-absorbing bolt holes (18). The energy-absorbing bolt holes (18) are provided with the energy-absorbing bolts (12). The prefabricated steel column (1) and the prefabricated corbel (3) are respectively connected to the self-resetting component.

4. A self-resetting energy-absorbing frame node based on an assembled hidden corbel according to claim 3, characterized in that: The self-resetting component comprises four prestressed steel strands (8); one end of the prefabricated steel beam (2) away from the prefabricated steel column (1) is fixedly connected to a fixed steel plate (7); four prestressed steel strand holes (21) are provided on the fixed steel plate (7); one end of the prestressed steel strand (8) passes through the prestressed steel strand hole (21) and is provided with an anchor (9); the other end of the prestressed steel strand (8) is fixedly connected to the prefabricated steel column (1) and the prefabricated corbel (3).

5. According to claim 3, a self-resetting energy-absorbing frame node based on an assembled hidden corbel is characterized in that: The prefabricated steel beam (2) is provided with a connecting steel plate (6), a plurality of first bolt holes (19) are provided at the bottom end of the prefabricated steel beam (2) and the connecting steel plate (6), a first high-strength bolt (13) is provided in each of the first bolt holes (19), the second energy dissipation plate (11) is located between the connecting steel plate (6) and the prefabricated corbel (3), and the connecting steel plate (6) is connected to the second energy dissipation plate (11) and the prefabricated corbel (3) via the energy dissipation bolts (12).

6. A self-resetting energy-absorbing frame node based on assembled hidden corbels according to claim 1, characterized in that: A plurality of angle steel connectors (4) are arranged between the prefabricated steel column (1) and the prefabricated corbel (3); a plurality of third bolt holes (17) are provided on the prefabricated steel column (1), the prefabricated corbel (3) and the angle steel connector (4); and third high-strength bolts (15) are arranged in the third bolt holes (17).

7. The self-resetting energy-absorbing frame node based on assembled hidden corbel according to claim 1 is characterized in that: A cylindrical block is fixedly connected to the upper end of one side of the prefabricated steel beam (2) close to the prefabricated corbel (3).

8. The self-resetting energy-absorbing frame node based on assembled hidden corbel according to claim 3 is characterized in that: The first energy dissipation plate (10) and the second energy dissipation plate (11) are rubber plates.

9. The self-resetting energy-absorbing frame node based on assembled hidden corbel according to claim 3 is characterized in that: The energy-absorbing bolt (12) is an SMA bolt.

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