Split type chimeric connection of steel pipe concrete composite structure joint

Abstract

The utility model discloses a kind of steel pipe concrete combined structure node of split embedded connection, it is related to building technical field, including steel pipe concrete column and at least one group of assembly including two steel pipe concrete beam, the steel pipe concrete column is equipped with and is inserted into, and the two ends of the inserted part respectively protrude the opposite two sides of steel pipe concrete column, to form the extension structure for being connected with steel pipe concrete beam flange portion at steel pipe concrete column side part, the inserted part is set to two groups and along steel pipe concrete column length direction arrangement, the upper and lower extension structure of being located in steel pipe concrete column same side is respectively connected with the upper flange and lower flange portion of steel pipe concrete beam. Compared with the conventional design in prior art, on the basis of limited opening, by designing inserted extension structure and adaptation, avoid the design of conventional bloated connection structure, ensure that bending moment and shear effectively transfer, improve the integrity of node.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically to a split-type interlocking steel-concrete composite structure node. Background Technology

[0002] In the field of building technology, a steel-concrete composite structure is a structure in which steel components and concrete or reinforced concrete components are combined into a whole and work together, combining some characteristics of steel structures and reinforced concrete structures.

[0003] Existing technologies include various types of joints such as ring beam joints and steel plate hoop joints, selected according to different application scenarios. Taking the widely used ring beam joint as an example, it involves setting an octagonal or rectangular reinforced concrete ring beam around a steel pipe. Bending moment is transferred by anchoring the longitudinal reinforcement of the beam through the ring beam, while shear force is transferred through shear keys or steel load-bearing pins welded to the pipe wall. The advantage of this type of joint is that it avoids openings in the steel pipe, but the ring beam results in a bulky joint area, affecting the building space and aesthetics.

[0004] A search revealed that patent document CN221030658U discloses a mortise and tenon joint assembled steel-concrete composite beam-column joint structure. This joint structure includes a square steel-concrete column and square steel-concrete beams. The square steel-concrete beams are detachably and vertically inserted into both sides of the square steel-concrete column. Each square steel-concrete beam includes a first square steel-concrete main beam and a second square steel-concrete main beam. The first square steel-concrete main beam has a first connecting groove at its center, and the second square steel-concrete main beam has a second connecting groove at its center, which is inserted into the first connecting groove. The first and second square steel-concrete main beams are detachably connected.

[0005] The aforementioned node structure uses a split-type design for the square steel tube concrete column, with slots on the square steel tube concrete beam, and mortise and tenon joints for assembly. While this assembly method relies on the self-locking nature of the mortise and tenon joints to avoid making the node area bulky, the split-type design of the concrete column and the slots on the concrete beam for mortise and tenon fitting result in excessively large openings in the node structure. This leads to excessive loss of the effective load-bearing section, affecting the overall connection strength of the node. Although the strength at the connection can be supplemented by adding internal diaphragms to achieve equivalent strength, this increases the number of welds.

[0006] To address this, we propose a split-type interlocking steel-concrete composite structural node, providing a novel construction method that, while ensuring the mechanical properties at the node, further reduces the number of welds and lowers construction costs. Utility Model Content

[0007] The purpose of this invention is to solve the problems in the prior art by proposing a split-type interlocking steel-concrete composite structure node. This composite structure node, with limited openings, adopts an interlocking extension structure to adapt to it, avoiding the design of conventional bulky connection structures, ensuring effective transmission of bending moment and shear force, and improving the overall integrity of the node.

[0008] To solve the above problems, this utility model provides the following technical solution:

[0009] A split-type interlocking steel-concrete composite structural node includes a steel-concrete column and at least one set of fittings comprising two steel-concrete beams. A pair of inserts are threaded through the steel-concrete column, with each end of the insert protruding from opposite sides of the column to form an extension structure on the side of the steel-concrete column for connection to the flange portion of the steel-concrete beam. The pair of inserts are arranged in two sets along the length of the steel-concrete column. The upper and lower extension structures on the same side of the steel-concrete column are respectively connected to the upper and lower flange portions of the steel-concrete beam.

[0010] As a further embodiment of this utility model: the insert includes two sets of support plates arranged in an interlocking manner on the steel-concrete composite column. Each support plate has an insertion end and a stop end. Both support plates pass through the steel-concrete composite column from opposite sides by means of their insertion ends, and the insertion end and the stop end protrude from opposite sides of the steel-concrete composite column respectively. The insertion end and the stop end located on the same side of the steel-concrete composite column are fixedly connected and together constitute the extension structure.

[0011] As a further embodiment of this utility model: the portions of the two support plates inside the steel-concrete composite column have a gap, which forms the first pouring hole.

[0012] As a further embodiment of this utility model: the structural node also includes an inner lining plate that passes through the steel tube concrete column, and the inner lining plate is located between two pairs of inserts. The two ends of the inner lining plate protrude from one opposite side of the steel tube concrete column, so as to form an embedded structure at the side of the steel tube concrete column for connecting with the web portion of the steel tube concrete beam, and the embedded structure and the extension structure together form a transition whole.

[0013] As a further embodiment of this utility model: the side portion of the steel-concrete composite column is provided with a first insertion hole and a second insertion hole for the support plate and the inner lining plate to pass through.

[0014] As a further embodiment of this utility model: the insertion end is provided with a first hole for connecting with the flange portion of the steel-concrete composite beam; the stop end is provided with a second hole for connecting with the flange portion of the steel-concrete composite beam; and the inner lining plate is provided with a third hole for connecting with the web portion of the steel-concrete composite beam.

[0015] As a further embodiment of this utility model: the lower corner of the steel-concrete composite beam is provided with a slot along its length for the inner lining plate to pass through.

[0016] As a further embodiment of this utility model: both the insertion end and the upper flange of the steel-concrete composite beam are provided with positioning holes, so that when the steel-concrete composite beam is assembled on the corresponding side of the steel-concrete composite column, the two positioning holes are arranged in a coaxial manner.

[0017] As a further embodiment of this utility model: when the assemblies are set into two sets and arranged in a cross shape on the steel pipe concrete column, the four sets of plug-in pairs that are compatible with the two sets of assemblies are arranged in an alternating manner.

[0018] As a further embodiment of this utility model: a second pouring hole is provided on the upper flange of the steel-concrete composite beam.

[0019] As a further embodiment of this utility model: the support plate is generally set as an angle steel. When the assembly is set as two sets and arranged in a cross shape on the steel pipe concrete column, and the four sets of plug-in pairs that are compatible with the two sets of assembly are staggered, between the two staggered support plates, one support plate is provided with a notch for the other support plate to pass through.

[0020] As a further embodiment of this utility model: the support plate is generally set as an angle steel. When the assembly is set as two sets and arranged in a cross shape on the steel pipe concrete column, and the four sets of plug-in pairs that are compatible with the two sets of assembly are staggered, between the two support plates in the staggered and abutting state, one of the support plates is provided with a notch for the other support plate to pass through.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Efficient assembly achieved through a split-type interlocking connection: The protruding ends of the insert form an extension structure that directly connects to the flange portion of the beam; simultaneously, two sets of inserts are arranged along the column length, synchronously fixing the upper and lower flange portions of the beam, ensuring reliable transmission of bending moment and shear force, and improving the overall integrity of the joint; moreover, a single column can accommodate multiple sets of beam assembly components, adapting to beam-column connection requirements in different directions. In summary, compared to conventional designs in existing technologies, this application, with limited openings, uses an interlocking extension structure for adaptation, avoiding the design of conventional bulky connection structures, ensuring effective transmission of bending moment and shear force, and improving the overall integrity of the joint.

[0023] 2. Optimization of stress and construction through interlocking support plate layout: The interlocking end and the stop end are designed separately, and after interlocking with each other, they are fixed to form a rigid extension structure, which disperses local stress; the independently installed support plate reduces the difficulty of interlocking and avoids the high precision requirements of the overall component.

[0024] 3. The gap between the two support plates forms the first pouring hole: the naturally formed hole ensures that the concrete flows in the core area of ​​the column without dead corners, eliminates the pouring blind spots caused by the plug-in, and improves the density of the concrete and the strength of the core area.

[0025] 4. The inner lining plate and the connecting plug enhance performance: The inner lining plate connects to the web of the beam and forms a complete force transmission system with the extension structure of the flange, which significantly improves the shear and bending resistance of the node; the two are combined into a standardized "transfer whole", which is convenient for mass prefabrication and assembly.

[0026] 5. Pre-drilled holes in the column improve construction accuracy: The first and second holes are pre-processed in the factory to ensure that the support plate and the inner lining plate are accurately positioned, avoiding on-site drilling errors and shortening the assembly cycle.

[0027] 6. Three types of holes enable standardized connections: the first and second holes connect to the flanges, and the third hole connects to the web, supporting flexible bolt / pin connections and allowing for slight deformation to adjust assembly stress; a detachable solution is provided for easy maintenance later.

[0028] 7. Simplified assembly process with slots in the beam body: The slots at the lower corners guide the inner lining plate to accurately penetrate the beam web, enabling rapid "plug-in" installation from top to bottom, avoiding on-site positioning adjustments and significantly improving construction efficiency.

[0029] 8. Positioning holes ensure assembly accuracy: The coaxial positioning holes of the beam flange and the insertion end are forcibly aligned to eliminate the risk of angular deviation, ensure the geometric accuracy of the nodes, and enhance structural safety.

[0030] 9. Cross-shaped layout with staggered plug-in arrangement to resolve spatial conflicts: Four sets of plug-in pairs are staggered vertically to avoid component interference when multi-directional beams intersect, ensuring the feasibility of construction of complex nodes.

[0031] 10. The support plate adopts an angle steel design. Angle steel itself has good bending stiffness and load-bearing capacity. Its two vertical sides are naturally suitable for connecting the beam flange (flange plate) and providing lateral support / connection (web direction).

[0032] 11. By creating notches in the support plates, the collision problem of two support plates at the same elevation but perpendicular in direction inside the column can be solved. The presence of these notches allows support plates from the other direction to pass through, achieving "avoidance" of staggered support plates at key locations in physical space. This completely solves the spatial interference problem, ensures the feasibility of the staggered arrangement scheme, and maintains the strength of the angle steel as much as possible. Split-type interlocking support plate components can also be replaced by split-type U-shaped steel, channel steel, C-shaped steel, etc. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Figure 1 This is a three-dimensional structural diagram of the assembled version of this utility model;

[0035] Figure 2 This is an exploded structural diagram of the present invention;

[0036] Figure 3 yes Figure 2 Remove the structural diagram of the plugin above from the current state;

[0037] Figure 4 yes Figure 3 A schematic diagram of the structure of the steel-concrete composite beam removed under the specified conditions;

[0038] Figure 5 This is a schematic diagram of a three-dimensional structure for inserting a set of plug-in components onto a steel-concrete composite column according to this utility model.

[0039] Figure 6 This is a three-dimensional structural diagram of the present invention before assembly;

[0040] Figure 7 This is a schematic diagram of the three-dimensional structure of the plug-in in this utility model;

[0041] Figure 8 This is a three-dimensional structural diagram of the inner lining plate in this utility model;

[0042] Figure 9 This is a schematic diagram of the three-dimensional structure of the steel-concrete composite beam in this utility model. Figure 1 ;

[0043] Figure 10 This is a schematic diagram of the three-dimensional structure of the steel-concrete composite beam in this utility model. Figure 2 ;

[0044] Figure 11 This is a schematic diagram of the steel-concrete composite column in this utility model, which is designed as a cylinder.

[0045] Figure 12 This is a schematic diagram of the structure of the steel-concrete composite column and steel-concrete composite beam connected by fastening bolts according to this utility model.

[0046] Figure 13 This is a schematic diagram of the structure of the support plate in this utility model, which is designed as an angle steel.

[0047] In the diagram: 1. Concrete-filled steel tube column; 2. Concrete-filled steel tube beam; 3. Insertion piece; 301. Support plate; 3010. Insertion end; 3011. Stop end; 4. Lining plate; 5. First insertion hole; 6. Second insertion hole; 7. First hole; 8. Second hole; 9. Third hole; 10. Slot; 11. Positioning hole; 12. First pouring hole; 13. Second pouring hole; 14. Pad plate; 15. Fastening bolt; 16. Notch. Detailed Implementation

[0048] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0049] like Figures 1-12 As shown, a modular, interlocking steel-concrete composite structural node includes a steel-concrete column 1 and fittings mounted thereon. Each fitting assembly comprises two steel-concrete beams 2. In use, the number of fittings can be adjusted according to the application environment and the type of the steel-concrete column 1. Furthermore, the specific steel-concrete column 1 can be selected based on actual conditions; for example... Figure 1 This is represented as a case where the installed steel-concrete composite column 1 is square and the fittings are set in two groups; Figure 11 This indicates that the steel-concrete composite column 1 is circular, and the fittings are set in two sets.

[0050] To facilitate the installation of the steel-concrete composite beam 2 on the steel-concrete composite column 1, this application provides transversely inserted connectors 3 through the steel-concrete composite column 1. The two ends of each connector 3 protrude from opposite sides of the steel-concrete composite column 1, forming an extension structure on the side of the steel-concrete composite column 1. This extension structure is used to connect with the flange portion of the steel-concrete composite beam 2, thereby enabling the installation of the steel-concrete composite beam 2 on the steel-concrete composite column 1. Since the steel-concrete composite beam 2 has an upper flange portion and a lower flange portion, to improve connection stability, two sets of connectors 3 are configured and arranged along the length of the steel-concrete composite column 1, forming an upper-lower layout to accommodate the layout of the upper and lower flange portions of the steel-concrete composite beam 2. The extension structure of the two sets of connectors 3 on one side of the steel-concrete composite column 1 is in an upper-lower layout. This upper-lower layout can be achieved by… Figure 5 Therefore, the upper extension structure is used to connect with the upper flange of the steel-concrete composite beam 2, and the lower extension structure is used to connect with the lower flange of the steel-concrete composite beam 2. The connected state can be represented by... Figure 1 To represent it.

[0051] A first insertion hole 5 is provided on the side of the steel-concrete composite column 1 for inserting a connector 3. The connector 3 includes two sets of support plates 301, each having an insertion end 3010 and a stop end 3011. The first insertion hole 5 is also provided in two sets. During installation, the two sets of support plates 301 are positioned on opposite sides of the steel-concrete composite column 1, with the insertion ends 3010 of the support plates 301 aligned with the corresponding first insertion holes 5. This configuration can be achieved by... Figure 4 This is used to represent the process. Then, the two are driven to move towards each other, relying on the insertion end 3010 to pass through the corresponding first insertion hole 5. During this process, the insertion end 3010 will protrude from one side of the steel-concrete column 1. As the stop end 3011 abuts against the other side of the steel-concrete column 1, it indicates that the protruding position of the insertion end 3010 on one side of the steel-concrete column 1 is the designated position. This state can be represented by... Figure 5 To illustrate, the stop end 3011 and the insertion end 3010 protrude from opposite sides of the steel-concrete composite column 1. Since there are two sets of support plates 301, and they are arranged in an interlocking manner, the insertion end 3010 and the stop end 3011 will be located on the same side of the steel-concrete composite column 1. The two can be fixed by means of bolt connection or welding, so that the insertion end 3010 and the stop end 3011 together form the above-mentioned extension structure.

[0052] Figure 4 This means that the assembly is set into two groups, and the plug-in 3 on each assembly is set into two groups and arranged in an up-down layout. The four groups of plug-in 3 are located on the four sides of the steel pipe concrete column 1, and all of them are in a pre-inserted state. Figure 5 This means that the assembly is set into two groups, and the plug-in 3 on each assembly is set into two groups in an up-down layout. The two groups of plug-in 3 on one opposite side (front and back) of the steel pipe concrete column 1 have formed an extension structure on the steel pipe concrete column 1, and the two groups of plug-in 3 on the other opposite side (left and right) are in a pre-inserted layout facing each other.

[0053] When concrete needs to be poured into the steel-concrete composite column 1, in the case where the insert 3 consists of two sets of support plates 301, the distance between the two sets of first insertion holes 5 is set large enough so that the portions of the two sets of support plates 301 located inside the steel-concrete composite column 1 have a large gap. This gap constitutes the first pouring hole 12. This state can be achieved by... Figure 1 The presence of this first pouring hole 12 will cause the support plate 301 to form a "steel-concrete structure" within the steel-concrete column 1 during subsequent concrete pouring, greatly improving the connection stability between the support plate 301 and the steel-concrete column 1.

[0054] Based on the simple extension structure, in order to further improve the connection effect between the steel-concrete composite beam 2 and the steel-concrete composite column 1, this application also includes an inner lining plate 4 passing through the steel-concrete composite column 1. Correspondingly, the side of the steel-concrete composite column 1 has a second insertion hole 6 for inserting the inner lining plate 4. Multiple inner lining plates 4 are provided, and the multiple inner lining plates 4 are evenly distributed between the upper and lower sets of insert plates 3. This state can be achieved by... Figure 5 The inner lining plate 4 protrudes from opposite sides of the steel-concrete composite column 1 at both ends. These opposite sides are the same as the opposite sides of the insert 3, forming an embedded structure on the side of the steel-concrete composite column 1. This embedded structure is used to connect with the web portion of the steel-concrete composite beam 2.

[0055] In summary, the overall transition structure consisting of two sets of extension structures arranged vertically and an embedded structure located between the two sets of extension structures can achieve a stable connection between the steel-concrete composite beam 2 and the steel-concrete composite column 1.

[0056] like Figures 7-8 As shown, in order to achieve the connection between the extended structure, the embedded structure and the steel-concrete composite beam 2, this application has a first hole 7 on the insertion end 3010 for connecting with the flange portion of the steel-concrete composite beam 2; a second hole 8 on the stop end 3011 for connecting with the flange portion of the steel-concrete composite beam 2; and a third hole 9 on the inner lining plate 4 for connecting with the web portion of the steel-concrete composite beam 2.

[0057] It should be noted that if concrete needs to be poured into the steel-concrete composite column 1, all the aforementioned connections will be welded (in the case of connections with holes, plug welding will be used), and a second pouring hole 13 will be provided on the upper flange of the steel-concrete composite beam 2. When concrete pouring is not required, i.e., when designed as a pure steel structure, the parts in contact between the support plate 301 and the steel-concrete composite column 1 can be bolted together. Figure 12 As shown, after the steel-concrete composite column 1 and the steel-concrete composite beam 2 are assembled, they are connected by fastening bolts 15. Reinforcing plates can be added at the corresponding opening positions on the steel-concrete composite column 1 to ensure overall strength.

[0058] To enable the steel-concrete composite beam 2 to move from top to bottom to a designated side position of the steel-concrete composite column 1, this application provides a slot 10 along its length at the lower corner of the steel-concrete composite beam 2 for the inner lining plate 4 to pass through. This configuration can be achieved by... Figure 9 To indicate this, in order to accurately know when the steel-concrete composite beam 2 moves to the designated position of the extension structure, positioning holes 11 are provided at both the insertion end 3010 and the upper flange of the steel-concrete composite beam 2. When the steel-concrete composite beam 2 is assembled at the corresponding side position of the steel-concrete composite column 1, the two positioning holes 11 are arranged coaxially to indicate to the staff that the installation is in place.

[0059] This article uses two sets of assemblies as an example to illustrate the assembly process. Since each assembly contains two steel-concrete composite beams 2, the two assemblies have four steel-concrete composite beams 2. Preferably, the four steel-concrete composite beams 2 are arranged in a cross shape on the steel-concrete composite column 1. In order to ensure that the four steel-concrete composite beams 2 are arranged as coplanarly as possible on the steel-concrete composite column 1, the four sets of matching plug-in parts 3 are staggered vertically.

[0060] The specific assembly process is as follows: Figure 3 Based on the shown state, the inserts 3 located on the four sides and below the steel-concrete composite column 1 can be inserted into the first insertion holes 5 on the steel-concrete composite column 1 to achieve an extension structure. Then, the inner lining plates 4 on the four sides of the steel-concrete composite column 1 can be inserted into the second insertion holes 6 on the steel-concrete composite column 1 to achieve an embedded structure. Next, the four upper steel-concrete composite beams 2 can be moved from top to bottom, and the inner lining plates 4 can be passed through the slots 10 at the lower corners of the steel-concrete composite beams 2 to prevent the inner lining plates 4 from interfering with the downward movement of the steel-concrete composite beams 2, until the inner side of the upper flange of the steel-concrete composite beam 2 abuts against the inner lining plates 4. At this time, the positioning holes 11 on the insertion end 3010 will be coaxial with the positioning holes 11 on the upper flange of the steel-concrete composite beam 2, indicating that the steel-concrete composite beam 2 has reached the lower position. Then, Figure 2 The insert 3, located on the four sides and above the steel-concrete composite column 1, passes through the first insertion hole 5 on the steel-concrete composite column 1 to achieve an extension structure. The existence of this extension structure will abut against the upper flange of the steel-concrete composite beam 2. This assembled state can be achieved by... Figure 1 This is illustrated below. Since the four steel-concrete composite beams 2 need to be arranged as coplanarly as possible, and the four interlocking inserts 3 are arranged in a staggered vertical arrangement, the resulting extension structures located on opposite sides of the steel-concrete composite column 1 and positioned above it respectively abut against the outer side of the upper flange and the inner side of the lower flange of the steel-concrete composite beam 2 in the two assembly components. These can be subsequently connected by bolts or plug welding. A pad 14 can be installed on the lower extension structure to raise the position of the steel-concrete composite beam 2 to accommodate the corresponding insertion holes.

[0061] When the extension structure abuts against the inner side of the upper flange of the steel-concrete composite beam 2, since the extension structure is located inside the steel-concrete composite beam 2 at this time, corresponding holes are opened on the outer side of the upper flange of the steel-concrete composite beam 2. This state can be achieved by... Figure 9 This is used to represent the structure. When the extended structure abuts against the outer side of the upper flange of the steel-concrete composite beam 2, no openings are required in the upper flange of the steel-concrete composite beam 2, and its structure can be represented by... Figure 10 To represent it.

[0062] Furthermore, to improve the overall strength of the support plate 301, this application can also configure the support plate 301 as an angle steel, whose two vertical edges are naturally suitable for connecting the upper flange portion and the web portion of the steel-concrete composite beam 2 respectively, further improving the connection strength between the steel-concrete composite column 1 and the steel-concrete composite beam 2. Figure 13 As shown, the first insertion hole 5 on the steel-concrete composite column 1 is L-shaped to allow the angle steel-shaped support plate 301 to be inserted. When the assemblies are set in two sets and arranged in a cross shape on the steel-concrete composite column 1, and the four sets of plug-in inserts 3 that are adapted to the two sets of assemblies are staggered vertically, a notch 16 is provided on one of the staggered support plates 301 for the other support plate 301 to pass through.

[0063] Based on the staggered layout of the four pairs of plug-in 3, notches 16 need to be made on two pairs of plug-in 3. The specific location of the notches 16 can be selected adaptively as follows:

[0064] (1) As Figure 13 As shown, notches 16 are formed on two sets of inserts 3 used in the same assembly, that is, notches 16 are formed on two sets of inserts 3 arranged vertically on the same assembly. After subsequent installation, notches 16 are located inside the steel-concrete composite column 1. The position of notches 16 is located on the insertion path of the support plate 301 of the other assembly, allowing the support plate 301 to pass through without causing movement interference. This design ensures that the staggered upper and lower support plates 301 can fit tightly against each other, resulting in greater structural strength during subsequent concrete pouring.

[0065] (2) Alternatively, two notches 16 may be selected and opened on the four sets of inserts 3 corresponding to the two assembly components, that is, notches 16 may be opened on the inserts 3 applied to one assembly component and on the inserts 3 applied to the other assembly component. After subsequent installation, the notch 16 is located inside the steel pipe concrete column 1. The position of the notch 16 is located on the insertion movement path of the support plate 301 of the other assembly component, so that the support plate 301 can pass through without causing movement interference.

[0066] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A modular, interlocking steel-concrete composite structural joint, characterized in that, The assembly includes a steel-concrete composite column (1) and at least one set of fittings containing two steel-concrete composite beams (2). The steel-concrete composite column (1) is provided with a pair of inserts (3), and the two ends of the pair of inserts (3) protrude from opposite sides of the steel-concrete composite column (1) to form an extension structure at the side of the steel-concrete composite column (1) for connecting with the flange portion of the steel-concrete composite beam (2). The pair of inserts (3) are set in two sets and arranged along the length direction of the steel-concrete composite column (1). The upper and lower extension structures located on the same side of the steel-concrete composite column (1) are respectively connected to the upper flange and lower flange portion of the steel-concrete composite beam (2).

2. The steel-concrete composite structure node with a split-type interlocking connection according to claim 1, characterized in that, The insert (3) includes two sets of support plates (301) arranged in an interlocking manner on the steel-concrete composite column (1). The support plate (301) has an insertion end (3010) and a stop end (3011). The two support plates (301) are transversely traversed on the steel-concrete composite column (1) with their insertion ends (3010) facing each other, and the insertion ends (3010) and the stop ends (3011) protrude from opposite sides of the steel-concrete composite column (1). The insertion ends (3010) and the stop ends (3011) on the same side of the steel-concrete composite column (1) are fixedly connected and together constitute the extension structure.

3. The steel-concrete composite structure node with a split-type interlocking connection according to claim 2, characterized in that, The two support plates (301) have a gap in the portion inside the steel tube concrete column (1), which forms the first pouring hole (12).

4. A split-type interlocking steel-concrete composite structural node according to claim 2 or 3, characterized in that, The structural node also includes an inner lining plate (4) that passes through the steel tube concrete column (1), and the inner lining plate (4) is located between two pairs of inserts (3). The two ends of the inner lining plate (4) protrude from one opposite side of the steel tube concrete column (1) to form an embedded structure at the side of the steel tube concrete column (1) for connecting with the web of the steel tube concrete beam (2), and the embedded structure and the extension structure together form a transition whole.

5. A split-type interlocking steel-concrete composite structure node according to claim 4, characterized in that, The side of the steel-concrete composite column (1) is provided with a first insertion hole (5) and a second insertion hole (6) for the support plate (301) and the inner lining plate (4) to pass through.

6. A split-type interlocking steel-concrete composite structure node according to claim 4, characterized in that, The insertion end (3010) is provided with a first hole (7) for connecting with the flange of the steel-concrete composite beam (2); the stop end (3011) is provided with a second hole (8) for connecting with the flange of the steel-concrete composite beam (2); and the inner lining plate (4) is provided with a third hole (9) for connecting with the web of the steel-concrete composite beam (2).

7. A split-type interlocking steel-concrete composite structural node according to claim 4, characterized in that, The lower corner of the steel-concrete composite beam (2) is provided with a slot (10) along its length for the inner lining plate (4) to pass through.

8. A split-type interlocking steel-concrete composite structural node according to claim 2 or 3, characterized in that, The insertion end (3010) and the upper flange of the steel tube concrete beam (2) are both provided with positioning holes (11) so that when the steel tube concrete beam (2) is assembled on the corresponding side of the steel tube concrete column (1), the two positioning holes (11) are arranged in a coaxial manner.

9. A split-type interlocking steel-concrete composite structural node according to any one of claims 1-3, characterized in that, When the assemblies are set in two groups and arranged in a cross shape on the steel pipe concrete column (1), the four sets of plug-in (3) that are compatible with the two sets of assemblies are staggered vertically.

10. A split-type interlocking steel-concrete composite structural node according to any one of claims 1-3, characterized in that, The upper flange of the steel-concrete composite beam (2) is provided with a second pouring hole (13).

11. A split-type interlocking steel-concrete composite structural node according to claim 2 or 3, characterized in that, The support plate (301) is generally set as an angle steel. When the assembly is set as two sets and arranged in a cross shape on the steel pipe concrete column (1), and the four sets of plug-in (3) that are compatible with the two sets of assembly are staggered, between the two support plates (301) in the staggered and abutting state, one support plate (301) is provided with a notch (16) for the other support plate (301) to pass through.

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