Steel pipe column middle layer node connecting structure

Abstract

The invention discloses a steel pipe column middle layer node connecting structure which comprises a plurality of outer reinforcing ring plates, a plurality of outer reinforcing ring plates and a plurality of inner reinforcing ring plates. The steel beam is connected with the outer reinforcing ring plate; the steel plate cover plates are arranged at the upper and lower ends of the outer reinforcing ring plate; the longitudinal steel plate is arranged on the steel pipe column, and one end of the longitudinal steel plate is connected with the steel plate cover plate; according to the scheme, the wing-expanded outer reinforcing ring plate is arranged at the middle layer node of the steel pipe column, so that the bending moment and shearing force of the node area of the steel pipe column can be effectively transmitted by utilizing the outer reinforcing ring plate, the purpose of connecting the steel pipe column and the steel beam is achieved, and the purposes of improving the node ductility and reducing the cost are achieved. The problem of difficulty in connection mode and construction of the middle layer side column and the middle column joint for connecting the steel pipe column and the steel beam is effectively solved, and the steel pipe column and the steel beam have great popularization and application prospects. And the steel bars in the horizontal direction are directly welded on the longitudinal steel plates, so that the work of welding on a construction site and detecting the welding seam quality is reduced, the construction quality is ensured, and the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe column node connection, and more specifically, to a steel pipe column middle layer node connection structure. Background Art

[0002] For structures with large spans, heavy loads, complex forces, and irregular vertical structures, the use of conventional concrete structures will inevitably lead to a series of problems such as excessive cross-sectional dimensions of components, high costs, and reduced effective space. Compared with concrete structures, steel-concrete composite structures can reduce the cross-sectional dimensions of components, reduce the deadweight of the structure, reduce seismic response, increase effective space, reduce project costs, and increase the ductility and durability of components and structures. Compared with general reinforced concrete frame columns, circular steel tube concrete columns have the advantages of good mechanical and seismic performance and simple construction, which can achieve the purpose of excellent mechanical and seismic performance, simple construction, and cost savings.

[0003] In underground structures using a composite structural system of circular steel tube concrete columns + steel concrete beams, the depth of the elevator pit or sump is generally about 2.5m deeper than the raft slab. Limited by the actual conditions of the foundation pit at the project site, when the construction site does not have the conditions for support and excavation in this area, the over-excavation depth of the raft slab in the elevator pit or sump area can be reduced by changing the surrounding walls of the elevator room or sump from brick masonry walls to reinforced concrete walls. However, the connection structure at the middle layer node of the circular steel tube concrete column is not clear at present, and the construction of the surrounding concrete walls of the elevator room or sump is difficult.

[0004] It is not clear how the CFST columns are connected to the steel beams, that is, how the reinforced concrete walls are formed.

[0005] Therefore, it is necessary to provide a steel pipe column middle layer node connection structure to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a steel pipe column middle layer node connection structure to solve the above technical problems.

[0007] To achieve the above object, the present invention adopts the following technical solution:

[0008] A steel pipe column intermediate layer node connection structure, arranged on a steel pipe column, comprising:

[0009] There are multiple outer reinforcing ring plates, all of which are arranged at the middle layer node positions of the steel pipe column;

[0010] A steel beam connected to the outer reinforcing ring plate;

[0011] Steel plate cover plates are arranged at the upper and lower ends of the outer reinforcing ring plate;

[0012] A longitudinal steel plate is arranged on the steel pipe column, and one end of the longitudinal steel plate is connected to the steel plate cover.

[0013] Furthermore, the outer reinforcement ring plate includes an upper wing plate and a lower wing plate connected to the steel pipe column, and the upper end of the upper wing plate and the lower end of the lower wing plate are both connected to the steel plate cover.

[0014] Furthermore, the steel beam includes a shaped steel beam, which includes a steel beam upper plate, a steel beam web and a steel beam lower plate, the steel beam upper plate and the steel beam lower plate are respectively connected to the ring plate upper wing plate and the ring plate lower wing plate, and the upper and lower ends of the steel beam web are respectively connected to the steel beam upper plate and the steel beam lower plate.

[0015] Furthermore, the steel beam also includes a steel short beam, which includes a short beam upper plate, a short beam web and a short beam lower plate, the short beam upper plate and the short beam lower plate are respectively connected to the ring plate upper wing plate and the ring plate lower wing plate, and the upper and lower ends of the short beam web are respectively connected to the short beam upper plate and the short beam lower plate.

[0016] Furthermore, one end of the steel beam web and the short beam web in a horizontal direction is connected to the steel pipe column.

[0017] Furthermore, it also includes interconnected horizontal steel bars and vertical steel bars, one end of the horizontal steel bar is connected to the longitudinal steel plate;

[0018] One end of the vertical steel bar located at the steel plate cover is connected to the steel plate cover, one end of the vertical steel bar located at the steel beam is connected to the steel beam, and the vertical steel bar located outside the steel beam passes through the steel beam up and down.

[0019] Furthermore, the steel plate cover and the steel beam are both provided with a steel sleeve, the inner wall of the steel sleeve is provided with an internal thread, and one end of the vertical steel bar is provided with an external thread that matches the internal thread.

[0020] Furthermore, a plurality of first ribs are arranged between the upper wing plate of the ring plate and the lower wing plate of the ring plate, and second ribs are arranged at the upper end of the upper wing plate of the ring plate and the lower end of the lower wing plate of the ring plate, and the first ribs and the second ribs are both connected to the steel pipe column.

[0021] Furthermore, the upper wing plate and the lower wing plate of the ring plate are both provided with a plurality of casting holes, the upper end of the upper wing plate and the lower end of the lower wing plate of the ring plate are both provided with a plurality of shear bolts, and a plurality of shear bolts connected to the steel pipe columns are also provided between two adjacent longitudinal steel plates.

[0022] Furthermore, a longitudinal rib is provided on one end of the steel plate cover facing the longitudinal steel plate.

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

[0024] 1. For the first time, it is proposed that by setting an expanded outer reinforcing ring plate at the middle layer node of the steel tube column, the outer reinforcing ring plate can be used to effectively transfer the bending moment and shear force in the steel tube column node area, so as to connect the steel tube column and the steel beam, improve the node ductility, and obtain the design goal of plastic development of the section far away from the steel tube column node under the action of rare earthquakes; it effectively solves the connection method and structural difficulties of the middle layer side column and middle column nodes where the steel tube column and the steel beam are connected, has great prospects for promotion and application, and provides a reference for the design and construction of similar projects.

[0025] 2. The setting of the steel plate cover in this plan can avoid stress concentration in the outer reinforcement ring plate and prevent the risk of premature yielding of these parts due to stress concentration; the horizontal steel bars are directly welded to the longitudinal steel plate, which replaces a large amount of on-site welding in the node area of ​​the steel pipe column, reduces the welding and weld quality inspection work at the construction site, and prevents large discreteness of weld quality during on-site welding, ensuring construction quality, improving construction efficiency, shortening construction period, saving engineering construction costs, and practicing "Carbon Peaking and Carbon Neutrality", which has obvious social benefits.

[0026] 3. The setting of the short steel beam in this scheme can effectively transfer the possible damage area at the steel beam node from the steel pipe column node area to the truncation position of the short steel beam, thereby improving the bending bearing capacity and ductile energy dissipation capacity of the node and enhancing the toughness of the entire structural system.

[0027] 4. The connection method between the steel pipe column and the steel beam and the short steel beam in this scheme can make the load transfer path of the poured concrete wall clear and simple in use, and the construction operation is simple. It does not weaken the mechanical properties of the steel pipe column and the node area, meets the rigid connection requirements of the node connection, and fully utilizes the high bearing capacity of the combination of steel pipe column and concrete, improves the bearing capacity, seismic performance and stability of the node area, further improves the safety, reliability and ductility of the node area, and has obvious economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the state structure when the vertical steel bars at the middle layer nodes of the steel pipe column of the present invention fall into the steel beam;

[0029] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0030] Figure 3 It is a schematic diagram of the partial structure of the elevation in the direction of the short beam of the steel section at the node of the steel pipe column of the present invention;

[0031] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0032] Figure 5 It is a schematic diagram of the partial structure of the elevation in the direction of the steel beam at the node of the steel pipe column of the present invention;

[0033] Figure 6 for Figure 3 Schematic diagram of the cross-section structure at CC in the middle;

[0034] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure at DD in the middle;

[0035] Figure 8 for Figure 7 Structural diagram when the vertical reinforcement is greater than the width of the short beam upper plate and the steel beam upper plate.

[0036] Fig. 9 It is a schematic structural diagram of the state when the vertical reinforcement at the middle layer node of the steel pipe column of the present invention falls outside the steel beam.

[0037] Description of the numbers in the figure:

[0038] 1. Steel pipe column; 2. External reinforcement ring plate; 21. Ring plate upper wing plate; 22. Ring plate lower wing plate; 3. Steel beam; 31. Section steel beam; 311. Steel beam upper plate; 312. Steel beam web; 313. Steel beam lower plate; 32. Section steel short beam; 321. Short beam upper plate; 322. Short beam web; 323. Short beam lower plate; 4. Steel plate cover; 5. Longitudinal steel plate; 6. Horizontal steel bars; 7. Vertical steel bars; 8. Steel bar sleeve; 9. First rib; 10. Second rib; 11. Casting hole; 12. Shear studs; 13. Longitudinal bars. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-9 , a steel pipe column intermediate layer node connection structure, arranged on a steel pipe column 1, comprising:

[0041] There are multiple outer reinforcing ring plates 2, all of which are arranged at the middle layer node position of the steel pipe column 1;

[0042] The steel beam 3 is connected to the outer reinforcing ring plate 2;

[0043] Steel plate cover plates 4 are arranged at the upper and lower ends of the outer reinforcing ring plate 2;

[0044] The longitudinal steel plate 5 is arranged on the steel pipe column 1 , and one end of the longitudinal steel plate 5 is connected to the steel plate cover 4 .

[0045] Steps for constructing reinforced concrete walls around elevator rooms or sump pits:

[0046] S1. The concrete wall is prefabricated in the factory with steel pipe columns 1, and the outer reinforcing ring plate 2, steel beam 3, steel plate cover plate 4 and longitudinal steel plate 5 are assembled and welded;

[0047] S2, transporting the assembled steel pipe column 1 to the construction site;

[0048] S3, fix the steel pipe column 1 to the designated position and install the components at the node of the steel pipe column 1;

[0049] S4, tying steel bars at 3 locations of the steel beam to form a frame of a reinforced concrete wall;

[0050] S5. Pour concrete and form a reinforced concrete wall after solidification.

[0051] This design proposes for the first time that by setting the expanded outer reinforcing ring plate 2 at the middle layer node of the steel pipe column 1, the outer reinforcing ring plate 2 can be used to effectively transfer the bending moment and shear force in the node area of ​​the steel pipe column 1, and play the purpose of connecting the steel pipe column 1 and the steel beam 3, so as to achieve the goal of improving the ductility of the node and obtaining the design goal of plastic development of the section away from the node of the steel pipe column 1 under the action of rare earthquakes. The position and number of the outer reinforcing ring plate 2 can be determined according to the cross-sectional height of the steel beam 3.

[0052] This design effectively solves the difficult problems of connection mode and structure of the middle layer side column and middle column nodes connecting the steel tube column 1 and the steel beam 3. This research concept is applied for the first time in the field of steel tube column 1 structural design, and has great prospects for promotion and application, providing a reference for the design and construction of similar projects.

[0053] The provision of the steel plate cover 4 can avoid stress concentration in the outer reinforcing ring plate 2 and prevent the risk of premature yielding of these parts due to stress concentration. The outer reinforcing ring plate 2, steel beam 3, steel plate cover 4, longitudinal steel plate 5 and steel pipe column 1 of the wing expansion are pre-assembled and processed in the factory. At the construction site, the horizontal steel bars are directly welded to the longitudinal steel plate 5, replacing a large amount of on-site welding in the node area of ​​the steel pipe column 1, reducing the welding and weld quality inspection work at the construction site, preventing large discreteness of weld quality during on-site welding, ensuring construction quality, improving construction efficiency, shortening construction period, saving engineering construction costs, and practicing "carbon peak and carbon neutrality", which has obvious social benefits.

[0054] In this embodiment, please refer to Figure 1-5 and Figure 7-8The outer reinforcing ring plate 2 includes a ring plate upper wing plate 21 and a ring plate lower wing plate 22 connected to the steel pipe column 1. The upper end of the ring plate upper wing plate 21 and the lower end of the ring plate lower wing plate 22 are both connected to the steel plate cover plate 4. The thickness of the longitudinal steel plate 5 is greater than the thickness of the ring plate upper wing plate 21 and the ring plate lower wing plate 22. The height of the longitudinal steel plate 5 is the same as the height of the reinforced concrete wall, which can improve the strength of the longitudinal steel plate 5 and meet the structural requirements of the reinforced concrete wall.

[0055] In this embodiment, please refer to Figure 1-3 , Figure 5 and Figure 7-8 The steel beam 3 includes a steel beam 31, and the steel beam 31 includes a steel beam upper plate 311, a steel beam web 312 and a steel beam lower plate 313. The steel beam upper plate 311 and the steel beam lower plate 313 are respectively connected to the ring plate upper wing plate 21 and the ring plate lower wing plate 22, and the upper and lower ends of the steel beam web 312 are respectively connected to the steel beam upper plate 311 and the steel beam lower plate 313;

[0056] The steel beam 3 also includes a steel short beam 32, which includes a short beam upper plate 321, a short beam web 322 and a short beam lower plate 323. The short beam upper plate 321 and the short beam lower plate 323 are respectively connected to the ring plate upper wing plate 21 and the ring plate lower wing plate 22, and the upper and lower ends of the short beam web 322 are respectively connected to the short beam upper plate 321 and the short beam lower plate 323.

[0057] The short steel beam 32 is shorter than the steel beam 31. The area where the short steel beam 32 is disconnected can be called the truncation position. The steel bars of the reinforced concrete wall are penetrated from top to bottom at the truncation position. The setting of the short steel beam 32 can effectively transfer the possible damage area at the node of the steel beam 31 from the node domain of the steel pipe column 1 to the truncation position of the short steel beam 32, thereby improving the bending bearing capacity and ductile energy dissipation capacity of the node and enhancing the toughness of the entire structural system.

[0058] The connection method between the steel pipe column 1 and the steel beam 31 and the short steel beam 32 can make the load transfer path of the poured concrete wall clear and simple in use, and the construction operation is simple. It does not weaken the mechanical properties of the steel pipe column 1 and the node area, meets the rigid connection requirements of the node connection, and fully utilizes the high bearing capacity advantage of the combination of the steel pipe column 1 and concrete, improves the bearing capacity, seismic performance and stability of the node area, further improves the safety, reliability and ductility of the node area, and has obvious economic benefits.

[0059] In this embodiment, please refer to Figure 1 and Figure 3-5, one end of the steel beam web 312 and the short beam web 322 in the horizontal direction is connected to the steel pipe column 1. The steel beam web 312 and the short beam web 322 are welded to the steel pipe column 1, ensuring that the steel beam 31 and the short steel beam 32 are rigidly connected to the steel pipe column 1, which can effectively improve the bearing capacity of the node area of ​​the steel pipe column 1, and achieve the purpose of strengthening the overall strength, rigidity and stability of the node area.

[0060] In this embodiment, please refer to Figure 3-8 , further comprising a horizontal steel bar 6 and a vertical steel bar 7 connected to each other, one end of the horizontal steel bar 6 being connected to the longitudinal steel plate 5;

[0061] One end of the vertical steel bar 7 located at the steel plate cover 4 is connected to the steel plate cover 4, and one end of the vertical steel bar 7 located at the steel beam 3 is connected to the steel beam 3. One end of the steel plate cover 4 facing the longitudinal steel plate 5 is provided with longitudinal reinforcement 13, and the vertical steel bar 7 located outside the steel beam 3 passes through the steel beam 3 up and down.

[0062] After the steel pipe column 1 is transported to the construction site and installed in place, the longitudinal reinforcement 13 is welded to the steel plate cover 4 at the upper and lower ends of the steel beam 31 and the steel short beam 32, and the horizontal reinforcement 6 is welded to the longitudinal steel plate 5, which replaces the method of requiring a large amount of on-site welding in the node area of ​​the steel pipe column 1, reduces the welding and weld quality inspection work at the construction site, prevents large discreteness in weld quality during on-site welding, ensures construction quality, improves construction efficiency, shortens construction period, and saves engineering construction costs.

[0063] The horizontal steel bars 6 and the vertical steel bars 7 are tied and connected by stirrups, and the frame in front of the reinforced concrete wall is formed by cooperating with the steel beams 31 and the short steel beams 32.

[0064] If the width of the steel beam upper plate 311 and the short beam upper plate 321 is greater than the concrete wall frame, that is, at this time, part of the vertical steel bars 7 will fall on the steel beam upper plate 311 or the short beam upper plate 321, and one end of the vertical steel bars 7 will be connected to the steel beam upper plate 311 or the short beam upper plate 321, while the vertical steel bars 7 at the cut-off position of the short beam upper plate 321 will be in the form of penetrating from top to bottom, such as Figure 3-7 Status shown;

[0065] If the width of the steel beam upper plate 311 and the short beam upper plate 321 is smaller than the concrete wall frame, that is, the vertical steel bars 7 will not fall on the steel beam upper plate 311 or the short beam upper plate 321, the vertical steel bars 7 will pass through from top to bottom and will not interfere with the steel beam upper plate 311 and the short beam upper plate 321. Figure 8-9 Status shown.

[0066] In this embodiment, please refer to Figure 1 , Figure 3-5 and Figure 7The steel plate cover 4 and the steel beam 3 are both provided with a steel sleeve 8, the inner wall of the steel sleeve 8 is provided with an internal thread, and one end of the vertical steel bar 7 is provided with an external thread matching the internal thread. The steel sleeve 8 can be connected with the vertical steel bar 7 falling on the steel beam upper plate 311 or the short beam upper plate 321, which is simple and convenient to operate, avoids welding, and improves work efficiency.

[0067] In this embodiment, please refer to Figure 1-3 , Figure 5 and Figure 7-8 A plurality of first ribs 9 are arranged between the upper wing plate 21 and the lower wing plate 22 of the ring plate, and second ribs 10 are arranged at the upper end of the wing plate 21 and the lower end of the lower wing plate 22 of the ring plate, and the first ribs 9 and the second ribs 10 are connected to the steel pipe column 1. The strength, rigidity and stability of the wing plate 21 and the lower wing plate 22 of the ring plate can be improved.

[0068] In this embodiment, please refer to Figure 1-2 and Figure 7-8 A plurality of casting holes 11 are provided on the upper wing plate 21 of the ring plate and the lower wing plate 22 of the ring plate, a plurality of shear bolts 12 are provided on the upper end of the wing plate 21 of the ring plate and the lower end of the lower wing plate 22 of the ring plate, and a plurality of shear bolts 12 connected to the steel pipe column 1 are also provided between two adjacent longitudinal steel plates 5.

[0069] With this design, the pouring hole 11 can facilitate the subsequent pouring of concrete at the steel beam 3 position of the steel pipe column 1; the provision of the shear bolts 12 can effectively increase the bonding effect between the subsequent additional corbels at the nodes and the concrete wall, ensure coordinated work with the concrete wall, prevent large slippage of the concrete wall, improve the safety of the node area, and have obvious social benefits.

[0070] Shear studs 12 equidistantly distributed with the horizontal steel bars 6 are also arranged at the upper ends of the steel beam upper plate 311 and the short beam upper plate 321. Shear studs 12 are also arranged at 5 positions of the longitudinal steel plates on the steel pipe column 1, which can effectively enhance the coordinated work among the steel pipe column 1, the outer reinforcing ring plate 2, the steel beam 31, the steel short beam 32, the shear studs 12 and the subsequently poured concrete wall, thereby improving the overall strength, rigidity and stability.

[0071] It should be understood that the examples and implementation modes described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art may make various modifications or changes based on the examples and implementation modes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0072] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0073] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A steel pipe column intermediate layer node connection structure, arranged on a steel pipe column (1), characterized in that: include: A plurality of outer reinforcing ring plates (2) are provided and are all arranged at the middle layer node positions of the steel pipe column (1); A steel beam (3) connected to the outer reinforcing ring plate (2); Steel plate cover plates (4) are arranged at the upper and lower ends of the outer reinforcing ring plate (2); A longitudinal steel plate (5) is arranged on the steel pipe column (1), and one end of the longitudinal steel plate (5) is connected to the steel plate cover (4).

2. A steel pipe column intermediate layer node connection structure according to claim 1, characterized in that: The outer reinforcing ring plate (2) comprises a ring plate upper wing plate (21) and a ring plate lower wing plate (22) connected to the steel pipe column (1), and the upper end of the ring plate upper wing plate (21) and the lower end of the ring plate lower wing plate (22) are both connected to the steel plate cover plate (4).

3. A steel pipe column intermediate layer node connection structure according to claim 2, characterized in that: The steel beam (3) comprises a profiled steel beam (31), wherein the profiled steel beam (31) comprises a steel beam upper plate (311), a steel beam web plate (312) and a steel beam lower plate (313), wherein the steel beam upper plate (311) and the steel beam lower plate (313) are respectively connected to the ring plate upper wing plate (21) and the ring plate lower wing plate (22), and the upper and lower ends of the steel beam web plate (312) are respectively connected to the steel beam upper plate (311) and the steel beam lower plate (313).

4. A steel pipe column intermediate layer node connection structure according to claim 3, characterized in that: The steel beam (3) further comprises a short steel beam (32), wherein the short steel beam (32) comprises a short beam upper plate (321), a short beam web plate (322) and a short beam lower plate (323), wherein the short beam upper plate (321) and the short beam lower plate (323) are respectively connected to the ring plate upper wing plate (21) and the ring plate lower wing plate (22), and the upper and lower ends of the short beam web plate (322) are respectively connected to the short beam upper plate (321) and the short beam lower plate (323).

5. A steel pipe column intermediate layer node connection structure according to claim 4, characterized in that: One end of the steel beam web (312) and the short beam web (322) in the horizontal direction is connected to the steel pipe column (1).

6. A steel pipe column intermediate layer node connection structure according to claim 4, characterized in that: It also includes horizontal steel bars (6) and vertical steel bars (7) connected to each other, one end of the horizontal steel bar (6) is connected to the longitudinal steel plate (5); One end of the vertical steel bar (7) located at the steel plate cover (4) is connected to the steel plate cover (4), one end of the vertical steel bar (7) located at the steel beam (3) is connected to the steel beam (3), and the vertical steel bar (7) located outside the steel beam (3) passes through the steel beam (3) from top to bottom.

7. A steel pipe column intermediate layer node connection structure according to claim 6, characterized in that: The steel plate cover (4) and the steel beam (3) are both provided with a steel sleeve (8), the inner wall of the steel sleeve (8) is provided with an internal thread, and one end of the vertical steel bar (7) is provided with an external thread matching the internal thread.

8. The steel pipe column intermediate layer node connection structure according to claim 2, characterized in that: A plurality of first ribs (9) are arranged between the upper wing plate (21) of the ring plate and the lower wing plate (22) of the ring plate, and second ribs (10) are arranged at the upper end of the upper wing plate (21) of the ring plate and the lower end of the lower wing plate (22) of the ring plate, and the first ribs (9) and the second ribs (10) are both connected to the steel pipe column (1).

9. The steel pipe column intermediate layer node connection structure according to claim 2, characterized in that: A plurality of casting holes (11) are provided on the upper wing plate (21) of the ring plate and the lower wing plate (22) of the ring plate, a plurality of shear bolts (12) are provided on the upper end of the upper wing plate (21) of the ring plate and the lower end of the lower wing plate (22) of the ring plate, and a plurality of shear bolts (12) connected to the steel pipe column (1) are also provided between two adjacent longitudinal steel plates (5).

10. The steel pipe column intermediate layer node connection structure according to claim 1, characterized in that: One end of the steel plate cover (4) facing the longitudinal steel plate (5) is provided with longitudinal ribs (13).

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