Occlusion type beam-column joint of assembly type steel structure

Abstract

The utility model discloses a snap-in type beam column joint of an assembly type steel structure. The snap-in type beam column joint comprises a device body. Square steel pipe columns; the cantilever beam comprises an outer ring plate and a cantilever web plate, and a first notch and a second notch are formed in the two sides of the outer ring plate respectively; the beam column comprises a flange plate and a beam column web plate, and a fifth notch and a sixth notch are formed in the two sides of the flange plate correspondingly; the connecting cover plate comprises a web plate cover plate, a first flange cover plate and a second flange cover plate, the first flange cover plate is provided with a third notch matched with the first notch and the fifth notch, and the second flange cover plate is provided with a fourth notch matched with the second notch and the sixth notch. The first notch and the fifth notch are meshed with the third notch, and the second notch and the sixth notch are meshed with the fourth notch, so that the contact friction among the outer ring plate, the flange plate and the connecting cover plate is increased, the shear bearing capacity is enhanced, and the number of used bolts is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of beam-column nodes of assembled steel structures, in particular to an interlocking beam-column node of an assembled steel structure. Background Art

[0002] In recent years, prefabricated steel structures have shown promising development prospects. As green buildings with a full lifecycle, prefabricated steel structures feature standardized design, factory-based production, prefabricated construction, integrated finishing, and information-based management. Promoting prefabricated steel structures can reduce construction waste and dust pollution, shorten construction schedules, improve project quality, reduce excess steel production capacity, and contribute to a strategic steel reserve. Currently, prefabricated steel building systems have become a new direction and trend in the development of architectural steel structures.

[0003] Prefabricated beam-column joints include welding and bolting. Compared to welding, bolting offers advantages such as good stress-bearing performance, fatigue resistance, high factory-based quality, and quick disassembly. Bolted connections facilitate structural repair and replacement by removing the bolts, eliminating the need for cutting and re-welding as with welded connections. Fine-tuning between components can also be achieved by adjusting the tightness of the bolts, allowing for more precise installation and alignment of components. Bolted connections are suitable for connecting steel structural components of different types and specifications. When external forces such as earthquakes occur, they can disperse energy to a certain extent and reduce deformation and damage to the structure, demonstrating good versatility and adaptability. More importantly, bolted connection construction is relatively simple, allowing the connection process to be completed quickly, thereby shortening construction time and improving efficiency.

[0004] There are many types of bolted beam-column joints in prefabricated steel structures, including end-plate joints, outer sleeve joints, outer ring plate joints, and inner diaphragm joints. These joints transmit shear forces through bolts to resist shear. Therefore, as the design bearing capacity of a joint increases, the number of bolts must be increased to address the issue of insufficient shear resistance. However, this not only complicates construction but also increases plate size, wasting material. Furthermore, the increased number of bolt holes reduces the plate's net cross-section, reducing the joint's force transmission efficiency and increasing project costs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to solve the problem of insufficient shear bearing capacity of beam-column joints.

[0006] In order to solve the above technical problems, the utility model provides a snap-in beam-column node of an assembled steel structure, comprising: a square steel tube column; a cantilever beam, wherein the cantilever beam comprises an outer ring plate and a cantilever web, and a first notch and a second notch are respectively provided on both sides of the outer ring plate, and the outer ring plate is provided with a first long through hole, and the outer ring plate and the cantilever web are welded to the square steel tube column; a beam column, wherein the beam column comprises a flange plate and a beam column web, the flange plate is arranged at both ends of the beam column web, and a fifth notch and a sixth notch are respectively provided on both sides of the flange plate, and the beam column web is provided with a second long through hole; a connecting cover plate, the The connecting cover plate includes a web cover plate, a first flange cover plate and a second flange cover plate, the first flange cover plate is provided with a third slot adapted to the first slot and the fifth slot, the first flange cover plate is provided with a first bolt hole, the second flange cover plate is provided with a fourth slot adapted to the second slot and the sixth slot, and the second flange cover plate is provided with a second bolt hole; a bolt group, the two ends of the web cover plate are respectively fixed to the beam column web and the cantilever web by the bolt group, and the bolt group fixes the first flange cover plate, the outer ring plate, the flange plate and the second flange cover plate to be connected.

[0007] Furthermore, the first flange cover plate is provided with a first ridge, the first ridge is located at the edge of the third slot, and the side surface of the first ridge is against the side surface of the flange plate and the side surface of the outer ring plate; the second flange cover plate is provided with a second ridge, the second ridge is located at the edge of the fourth slot, and the side surface of the second ridge is against the side surface of the flange plate and the side surface of the outer ring plate.

[0008] Furthermore, the thickness of the first convex strip is d1, the thickness of the second convex strip is d2, and the thickness of the flange plate and the outer ring plate are both D, then D=d1+d2.

[0009] Furthermore, the first convex strip is provided with a groove, the second convex strip is provided with a protrusion, and the groove corresponds to the protrusion.

[0010] Furthermore, the first convex strip is provided with a protrusion, and the second convex strip is provided with a groove, and the groove corresponds to the protrusion.

[0011] Furthermore, a plurality of the first slots are uniformly arranged laterally on one side of the outer ring plate, a plurality of the second slots are uniformly arranged laterally on the other side of the outer ring plate, a plurality of the fifth slots are uniformly arranged laterally on one side of the flange plate, a plurality of the sixth slots are uniformly arranged laterally on the other side of the flange plate, a plurality of the third slots are uniformly arranged laterally on one side of the first flange cover plate, a plurality of the fourth slots are uniformly arranged laterally on one side of the second flange cover plate, the longitudinal length of the first slot and the longitudinal length of the fifth slot are greater than or equal to the longitudinal length of the third slot, and the longitudinal length of the second slot and the longitudinal length of the sixth slot are greater than or equal to the longitudinal length of the fourth slot.

[0012] Furthermore, the first notch and the second notch are staggered, and the fifth notch and the sixth notch are staggered.

[0013] Furthermore, the first notch and the second notch are asymmetrically arranged, and the fifth notch and the sixth notch are asymmetrically arranged.

[0014] Furthermore, the range of the angle α between the length direction of the third slot and the length direction of the beam column is: 80°≤α≤90°, the fourth slot is located on both sides of the beam column web, and the range of the angle β between the length direction of the fourth slot and the length direction of the beam column is: 80°≤β≤α.

[0015] Furthermore, the cross sections of the first notch, the second notch, the third notch, the fourth notch, the fifth notch and the sixth notch are V-shaped notches, and the inner side walls of the V-shaped notches have burrs.

[0016] Furthermore, the bolt group includes a first bolt, a second bolt and a third bolt, and the two ends of the web cover are respectively fixed to the beam-column web by the third bolt. After the first bolt is inserted into the first bolt hole, the first elongated through hole and the second bolt hole in sequence, one end of the first flange cover, the outer ring plate and one end of the second flange cover are fixedly connected. After the second bolt is inserted into the first bolt hole, the second elongated through hole and the second bolt hole in sequence, the other end of the first flange cover, the flange plate and the other end of the second flange cover are fixedly connected.

[0017] Furthermore, the outer ring plate includes a square ring plate and a trapezoidal plate, the square ring plate is welded to the square steel pipe column, the trapezoidal plate is connected to the square ring plate, the first notch and the second notch are respectively arranged on both sides of the trapezoidal plate, and the first long through hole is arranged on the trapezoidal plate.

[0018] Compared with the prior art, the interlocking beam-column joint of the prefabricated steel structure of the present invention has the following beneficial effects: the first and fifth notches interlock with the third notch, and the second and sixth notches interlock with the fourth notch, thereby increasing the contact friction between the outer ring plate, the flange plate, and the first and second flange cover plates, thereby enhancing the shear bearing capacity of the beam-column joint, improving the force transmission efficiency of the joint, reducing the number of bolts used, saving plate materials, and improving the bearing capacity of the beam-column joint. The need for a large number of connecting bolts and large-sized connecting plates at the structural connection node is avoided, effectively reducing the assembly construction time of the beam-column joint, reducing the overall weight of the connection node, and saving the manufacturing cost of the connecting parts. At the same time, the construction speed of the beam-column joint can be improved, and the stability and safety of the bolt connection can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the interlocking beam-column node of the assembled steel structure provided by the present invention;

[0020] Figure 2 It is a top view of the cantilever beam and beam-column of the interlocking beam-column node of the assembled steel structure provided by the utility model;

[0021] Figure 3 This is a front view of the outer ring plate of the interlocking beam-column node of the assembled steel structure provided by the present invention;

[0022] Figure 4 This is a front view of the flange plate of the interlocking beam-column node of the assembled steel structure provided by the utility model;

[0023] Figure 5 This is a schematic diagram of the first flange cover plate of the interlocking beam-column node of the assembled steel structure provided by the present invention;

[0024] Figure 6 It is a schematic diagram of the first flange cover plate of the interlocking beam-column node of the assembled steel structure provided by the present invention.

[0025] The corresponding relationship between the reference numerals and component names is as follows:

[0026] 1. Square steel pipe column;

[0027] 2. Cantilever beam; 21. Outer ring plate; 22. Cantilever web; 201. First notch; 202. Second notch; 203. First elongated through hole;

[0028] 3. Beam-column; 31. Flange plate; 32. Beam-column web; 301. Fifth notch; 302. Sixth notch; 203. Second long through hole;

[0029] 4. Connecting cover plate; 41. Web cover plate; 42. First flange cover plate; 43. Second flange cover plate; 401. Third notch; 402. Fourth notch; 403. First bolt hole; 404. Second bolt hole. DETAILED DESCRIPTION

[0030] The following is a further detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present invention but are not intended to limit the scope of the present invention. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, and numerical values ​​described in these examples do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0034] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] The following describes the interlocking beam-column nodes of the prefabricated steel structures according to some embodiments of the present invention with reference to the accompanying drawings.

[0036] like Figures 1 to 6 As shown, an embodiment of the present invention discloses an interlocking beam-column node of an assembled steel structure, comprising: a square steel tube column 1, a cantilever beam 2, a beam-column 3, a connecting cover plate 4 and a bolt group.

[0037] Among them, the cantilever beam 2 includes an outer ring plate 21 and a cantilever web 22, and the outer ring plate 21 is provided with a first notch 201 and a second notch 202 on both sides, and the outer ring plate 21 is provided with a first long through hole 203. The outer ring plate 21 and the cantilever web 22 are welded to the square steel tube column 1; the beam column 3 includes a flange plate 31 and a beam column 3 web, and the flange plate 31 is provided at both ends of the beam column 3 web, and the flange plate 31 is provided with a fifth notch 301 and a sixth notch 302 on both sides, and the beam column 3 web is provided with a second long through hole 303; the connecting cover plate 4 includes a web cover plate 41, a first flange cover Plate 42 and second flange cover plate 43, the first flange cover plate 42 is provided with a third slot 401 adapted to the first slot 201 and the fifth slot 301, the first flange cover plate 42 is provided with a first bolt hole 403, the second flange cover plate 43 is provided with a fourth slot 402 adapted to the second slot 202 and the sixth slot 302, the second flange cover plate 43 is provided with a second bolt hole 404; bolt group, the two ends of the web cover plate 41 are respectively fixed to the web of the beam column 3 and the cantilever web 22 by a bolt group, and the bolt group fixes the first flange cover plate 42, the outer ring plate 21, the flange plate 31 and the second flange cover plate 43 to each other.

[0038] The interlocking beam-column node of the prefabricated steel structure of the present application is achieved by setting mutually adaptable grooves on the contact surfaces of the outer ring plate 21, the flange plate 31 and the first flange cover plate 42 and the second flange cover plate 43. The bolt group serves as a fastening connection part of the first flange cover plate 42, the outer ring plate 21, the flange plate 31 and the second flange cover plate 43. The web of the bolt group fixes the two ends of the cover plate to the web of the beam column 3 and the cantilever web 22 respectively, thereby firmly splicing the outer ring plate 21 and the flange plate 31 together, and firmly splicing the web of the beam column 3 and the cantilever web 22 together, thereby firmly splicing the cantilever beam 2 and the beam column 3 together.

[0039] By interlocking the first and fifth notches 201 and 301 with the third notch 401, and the second and sixth notches 202 and 302 with the fourth notch 402, the contact friction between the outer ring plate 21, the flange plate 31, and the first and second flange covers 42 and 43 is increased. This enhances the shear bearing capacity of the beam-column 3 node, improves the node's force transmission efficiency, reduces the number of bolts used, conserves plate material, and increases the bearing capacity of the beam-column 3 node. This avoids the need for numerous connecting bolts and large connecting plates at the structural connection node, effectively reducing the assembly construction time of the beam-column 3 node, reducing the overall weight of the connection node, and saving the manufacturing cost of the connector. Furthermore, this improves the construction speed of the beam-column 3 node and ensures the stability and safety of the bolted connection.

[0040] Specifically, notches are formed on the contact surfaces between the outer ring plate 21, flange plate 31, first flange cover plate 42, and second flange cover plate 43. These notches are then clamped with high-strength bolts. The interlocking notches transmit shear forces at the node, changing the force transmission path at the node and improving the shear resistance of the beam-column 3 node and the load-bearing capacity of the connection. The outer ring plate 21 and cantilever web 22 are welded to the square steel column in the factory. This pre-welding process not only facilitates fabrication but also ensures weld accuracy and quality. The bolted connection between the beam-column 3 and the cantilever beam 2 is completed at the construction site, eliminating the need for on-site welding and minimizing the impact of site climatic conditions. This speeds up construction and facilitates installation. Compared to traditional prefabricated steel structure beam-column 3 joints, the interlocking beam-column 3 joint not only offers the advantages of simplicity and effectiveness, high load-bearing capacity, and a reduced number of bolts, but also boasts high production efficiency, rapid construction, high product quality, and a clean and orderly construction process. The interlocking beam-column 3-section of prefabricated steel structure can be applied to large structures, especially prefabricated substations, which can greatly speed up the construction speed, improve the construction quality, reduce the construction cost, and improve the bearing capacity and seismic resistance of the nodes.

[0041] Specifically, the beam column 3 is an H-shaped beam with a beam column width of 150 mm and a beam column height of 300 mm. The width of the first slot 201, the second slot 202, the third slot 401, the fourth slot 402, the fifth slot 301 and the sixth slot 302 is 2 mm, the slot depth is 1.5 mm, the bolt hole diameter is 18 mm, and the bolts are high-strength bolts.

[0042] In an optional embodiment of the present invention, the first notch 201 and the fifth notch 301 are of the same type, and the second notch 202 and the sixth notch 302 are of the same type. The consistency of the types of the first notch 201 and the fifth notch 301, and the second notch 202 and the sixth notch 302, facilitates mass production and increases the installation space between the first flange cover 42 and the second flange cover 43, facilitating matching between the notches and increasing assembly speed.

[0043] In an optional embodiment of the present invention, the first notch 201 and the fifth notch 301 are not of the same type, while the second notch 202 and the sixth notch 302 are of the same type. The different types of the first notch 201 and the fifth notch 301, and the different types of the second notch 202 and the sixth notch 302, facilitate distinguishing the groove surfaces between the outer ring plate 21 and the flange plate 31, facilitate the installation and positioning of the first flange cover plate 42 and the second flange cover plate 43 on the outer ring plate 21 and the flange plate 31, and help align the bolts with the bolt holes.

[0044] In an optional embodiment of the present utility model: the first flange cover plate 42 is provided with a first ridge, the first ridge is located at the edge of the third slot 401, and the side of the first ridge is against the side of the flange plate 31 and the side of the outer ring plate 21; the second flange cover plate 43 is provided with a second ridge, the second ridge is located at the edge of the fourth slot 402, and the side of the second ridge is against the side of the flange plate 31 and the side of the outer ring plate 21.

[0045] By providing a first convex strip on the first flange cover plate 42 and a second convex strip on the second flange cover plate 43, when the side surface of the flange plate 31 and the outer ring plate 21 are clamped and fixed between the first flange cover plate 42 and the second flange cover plate 43, the first convex strip and the second convex strip are abutted against the side surface of the flange plate 31 and the side surface of the outer ring plate 21, thereby increasing the contact area of ​​the first flange cover plate 42 and the second flange cover plate 43 with the outer ring plate 21 and the flange plate 31. On the one hand, the friction force of the contact surface can be increased, making the connection more firm and reliable. On the other hand, the force-bearing area can be increased, the stability and connection tightness of the beam-column 3 node can be improved, the bearing capacity and shear resistance of the beam-column 3 node can be effectively enhanced, and its overall performance and safety can be improved.

[0046] In an optional embodiment of the present invention, the thickness of the first rib is d1, the thickness of the second rib is d2, and the thickness of the flange plate 31 and the outer ring plate 21 are both D, then D = d1 + d2. By matching the combined thickness of the first and second ribs with the thickness of the flange plate 31 and the outer ring plate 21, the first and second ribs are offset against each other, and the first and second flange covers 42 and 43 completely wrap around the sides of the flange plate 31 and the outer ring plate 21, ensuring the tightness of the contact surface, enhancing the integrity of the connection components, effectively improving the stability of the node and the reliability of the connection, helping to ensure uniform stress at the connection point, and improving the load-bearing capacity and shear resistance of the overall structure.

[0047] In an optional embodiment of the present invention: the first convex strip is provided with a groove, the second convex strip is provided with a protrusion, and the groove corresponds to the protrusion; or the first convex strip is provided with a protrusion, the second convex strip is provided with a groove, and the groove corresponds to the protrusion.

[0048] By providing grooves and corresponding protrusions, when the first and second protrusions abut against each other, the protrusions and grooves engage with each other, creating a simple self-locking effect. This increases the friction and connection force between the first and second protrusions, tightening the fit and connection between the outer ring plate 21, the flange plate 31, and the first and second flange cover plates 42, 43. This reduces the possibility of loosening and falling off the connection structure, and improves the firmness and stability of the connection structure. Furthermore, the fit between the protrusions and grooves creates a larger contact area to offset and disperse the axial force and its component forces acting on the outer ring plate 21 and flange plate 31, thereby increasing the shear bearing capacity of the outer ring plate 21 and flange plate 31, making the connection structure more secure and able to withstand greater loads and vibrations.

[0049] like Figure 2 、 Figure 5 and Figure 6 As shown, in an optional embodiment of the present utility model: a plurality of first slots 201 are uniformly arranged laterally on one side of the outer ring plate 21, a plurality of second slots 202 are uniformly arranged laterally on the other side of the outer ring plate 21, a plurality of fifth slots 301 are uniformly arranged laterally on one side of the flange plate 31, a plurality of sixth slots 302 are uniformly arranged laterally on the other side of the flange plate 31, a plurality of third slots 401 are uniformly arranged laterally on one side of the first flange cover plate 42, a plurality of fourth slots 402 are uniformly arranged laterally on one side of the second flange cover plate 43, the longitudinal length of the first slot 201 and the longitudinal length of the fifth slot 301 are greater than or equal to the longitudinal length of the third slot 401, and the longitudinal length of the second slot 202 and the longitudinal length of the sixth slot 302 are greater than or equal to the longitudinal length of the fourth slot 402.

[0050] Specifically, by setting the longitudinal length of the first slot 201 and the longitudinal length of the fifth slot 301 to be greater than or equal to the longitudinal length of the third slot 401, and the longitudinal length of the second slot 202 and the longitudinal length of the sixth slot 302 to be greater than or equal to the longitudinal length of the fourth slot 402, when the slots engage with each other, the contact area and friction force between the slots are increased, so that the connection between the outer ring plate 21, the flange plate 31 and the first flange cover plate 42 and the second flange cover plate 43 is tighter and firmer, avoiding the deformation and damage of the teeth of the first slot 201, the second slot 202, the fifth slot 301 and the sixth slot 302 due to their short longitudinal length, affecting the stability and reliability of the bolt connection. It should be noted that, for directional words, the horizontal and vertical directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the embodiments of the present invention and simplifying the description. It does 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 cannot be understood as limiting the specific scope of protection of the present invention.

[0051] In the interlocking beam-column 3 node structure, the cantilever beam 2 and beam-column 3 are directly loaded components and are prone to deformation or breakage when subjected to pressure overload. The uniform transverse arrangement of the notches allows the inner walls of the notches to fit tightly together when the first flange cover plate 42, outer ring plate 21, flange plate 31, and second flange cover plate 43 are connected and fixed. This increases contact friction after engagement and evenly transmits the forces exerted on the outer ring plate 21 and flange plate 31 throughout the entire connection structure. The shear forces exerted on the cantilever beam 2 and beam-column 3 are effectively shared between the notches, thereby increasing the stability of the connection structure and preventing stress concentration that could easily break the outer ring plate 21 and flange plate 31. In addition, the third slot 401 and the fourth slot 402 are respectively and evenly arranged laterally on the entire side of the first flange cover plate 42 and the second flange cover plate 43, so that the third slot 401 and the fourth slot 402 can be quickly embedded in the first slot 201, the fifth slot 301, the second slot 202, and the sixth slot 302, respectively, thereby improving the applicability of the first flange cover plate 42 and the second flange cover plate 43.

[0052] In an optional embodiment of the present invention: the first notch 201 and the second notch 202 are staggered, and the fifth notch 301 and the sixth notch 302 are staggered; or, the first notch 201 and the second notch 202 are asymmetrically arranged, and the fifth notch 301 and the sixth notch 302 are asymmetrically arranged.

[0053] Specifically, the first notch 201 and the second notch 202 of the outer ring plate 21 are staggered, with the bottom of the first notch 201 corresponding to the tip of the second notch 202, and the tip of the first notch 201 corresponding to the bottom of the second notch 202. This not only increases the plate thickness between the first notch 201 and the second notch 202, preventing the outer ring plate 21 from breaking at the groove bottom connection, but also ensures uniform pressure distribution on the groove surface of the outer ring plate 21. It also increases the support points of the connection structure in different directions, making the connection more stable. Similarly, the staggered arrangement of the fifth notch 301 and the sixth notch 302 of the flange plate 31 can increase the plate thickness, ensure uniform pressure distribution on the groove surface, and further stabilize the connection. The one-to-one alignment of the tooth tips and the groove bottom allows the groove walls to effectively share the pressure when the outer ring plate 21 and flange plate 31 are under pressure, reducing stress concentration within the outer ring plate 21 and flange plate 31. This prevents the outer ring plate 21 and flange plate 31 from breaking due to the thin plate thickness at the groove bottom connection. The design of the first notch 201 and the second notch 202 being arranged on opposite sides and staggered effectively increases the compressive bearing capacity of the outer ring plate 21 and flange plate 31, improves the stability and reliability of the interlocking beam-column 3 node, reduces the possibility of loosening or relative movement of the connection structure, and improves the accuracy of the connection, thus bringing benefits to various applications.

[0054] In addition, the first notch 201 and the second notch 202, the fifth notch 301 and the sixth notch 302 are arranged asymmetrically, and the forms of the asymmetrical arrangement include offset setting, angle setting, cross setting and staggered setting. The notches are offset in the horizontal or vertical direction, so that the connection structure has different support characteristics when subjected to force, thereby improving the stability and bearing capacity of the connection. The positions of the first notch 201 and the second notch 202, the fifth notch 301 and the sixth notch 302 are staggered at a certain angle, so that a certain angle is formed between them, which can increase the support points of the connection structure in a specific direction, which is conducive to reducing local stress concentration and improving the overall stability of the structure. The positions of the first notch 201 and the second notch 202, the fifth notch 301 and the sixth notch 302 are arranged in a cross manner, that is, they intersperse with each other in certain areas, which can increase the support area of ​​the connection structure in different directions, effectively disperse the stress points, and improve the bearing capacity of the connection. The positions of the first notch 201 and the second notch 202, the fifth notch 301 and the sixth notch 302 are staggered on the plane, so that there is no completely symmetrical relationship between them, which can increase the flexibility and adaptability of the connection structure and help meet the specific needs of different engineering projects.

[0055] Therefore, the asymmetric setting of the first slot 201 and the second slot 202, the fifth slot 301 and the sixth slot 302 can flexibly adjust the positional relationship between the first slot 201 and the second slot 202, the fifth slot 301 and the sixth slot 302 according to specific engineering requirements and design needs, so as to achieve better connection effects and performance, thereby improving the applicability and flexibility of the interlocking beam-column 3 node.

[0056] like Figure 1 and Figure 4 As shown, in an optional embodiment of the present invention: the range of the angle α between the length direction of the third notch 401 and the length direction of the beam column 3 is: 80°≤α≤90°, the fourth notch 402 is located on both sides of the web of the beam column 3, and the range of the angle β between the length direction of the fourth notch 402 and the length direction of the beam column 3 is: 80°≤β≤α.

[0057] By setting the angle α within the range of 60°≤α≤90°, the direction of the notch is ensured to be perpendicular or nearly perpendicular to the direction of force applied to the beam-column 3, thereby increasing the stability of the connection, reducing the risk of structural deformation and damage due to force, and improving the reliability and safety of the entire structure. This also reduces local stress concentration, lowering the risk of fatigue failure and extending the service life of the connection. By setting the angle β≤α, the stress applied to the fourth notch 402 is more concentrated than that applied to the third notch 401. This concentrated stress in the fourth notch 402 is transferred to the web of the beam-column 3, resulting in evenly distributed force and enhancing the overall bearing capacity of the interlocking beam-column 3 node.

[0058] like Figure 1 、 Figure 3 and Figure 4 As shown, in an optional embodiment of the present invention: the cross-sections of the first notch 201 , the second notch 202 , the third notch 401 , the fourth notch 402 , the fifth notch 301 and the sixth notch 302 are V-shaped notches, and the inner sidewalls of the V-shaped notches have burrs.

[0059] Specifically, by processing the contact surfaces of the outer ring plate 21, the flange plate 31, and the first flange cover plate 42 and the second flange cover plate 43, a V-shaped notch is formed, thereby increasing the contact area at the connection structure node. After the notch processing, a convex burr portion will appear on the inner wall surface of the notch, and the inner wall of the notch becomes rough and uneven, which increases the contact friction between the outer ring plate 21, the flange plate 31 and the first flange cover plate 42 and the second flange cover plate 43, making the embedding between the notches tighter and less prone to sliding, ensuring that the contact friction between the notches can effectively transmit the shear force exerted on the interlocking beam-column three-node structure, increasing the shear bearing capacity of the connection structure, and improving the stability and firmness of the connection structure. It should be noted that burrs can increase the contact area between the two workpieces, and burrs can form a tight seal at the interface, effectively preventing foreign matter from entering the connection of the structure, and reducing the risk of oxidation corrosion on the notch contact surface.

[0060] In an optional embodiment of the present invention, the cross-sections of the first notch 201, the second notch 202, the third notch 401, the fourth notch 402, the fifth notch 301, and the sixth notch 302 are rectangular notches, and the inner sidewalls of the rectangular notches have burrs. The rectangular notches increase the contact area at the nodes of the connection structure. Compared with V-shaped notches, the interlocking between the rectangular notches is more stable and less likely to slip between the notches, facilitating the initial positioning of the first flange cover plate 42 and the second flange cover plate 43. Furthermore, with the same notch depth, the contact area is larger, ensuring that the contact friction between the notches effectively transmits the shear force exerted on the interlocking beam-column three-node structure.

[0061] In an optional embodiment of the present invention: the bolt group includes a first bolt, a second bolt and a third bolt, and the two ends of the web cover plate 41 are respectively fixed to the web of the beam column 3 by the third bolt. After the first bolt is inserted into the first bolt hole 403, the first long through hole 203 and the second bolt hole 404 in sequence, one end of the first flange cover plate 42, the outer ring plate 21 and one end of the second flange cover plate 43 are fixedly connected. After the second bolt is inserted into the first bolt hole 403, the second long through hole 303 and the second bolt hole 404 in sequence, the other end of the first flange cover plate 42, the flange plate 31 and the other end of the second flange cover plate 43 are fixedly connected.

[0062] Specifically, the first bolt and the second bolt serve as fastening connectors for the first flange cover plate 42, the outer ring plate 21, the flange plate 31 and the second flange cover plate 43, fixing one end of the first flange cover plate 42, the outer ring plate 21 and one end of the second flange cover plate 43 together, while also fixing the other end of the first flange cover plate 42, the flange plate 31 and the other end of the second flange cover plate 43 together, and both ends of the web cover plate 41 are respectively fixed to the web of the beam column 3 by the third bolt, and the outer ring plate 21 and the flange plate 31 are spliced ​​together from three parts by the bolt group through the connecting cover plate 4, so that the cantilever beam 2 and the beam column 3 are firmly spliced ​​together.

[0063] like Figure 2 As shown, in an optional embodiment of the present invention, the outer ring plate 21 includes a square ring plate and a trapezoidal plate. The square ring plate is welded to the square steel tube column 1, and the trapezoidal plate is connected to the square ring plate. First notches 201 and second notches 202 are respectively provided on either side of the trapezoidal plate, and first elongated through-holes 203 are provided on the trapezoidal plate. By providing the first notches 201 and second notches 202 on either side of the trapezoidal plate, the first notches 201 and second notches 202 are formed by digging grooves on the basis of stabilizing the structure of the square ring plate and the square steel tube column 1, thereby improving the stability of the cantilever beam 2.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A snap-fit ​​beam-column node of an assembled steel structure, characterized in that: include: Square steel pipe column; A cantilever beam, the cantilever beam comprising an outer ring plate and a cantilever web, the outer ring plate being provided with a first notch and a second notch on both sides thereof, the outer ring plate being provided with a first elongated through hole, the outer ring plate and the cantilever web being welded to the square steel pipe column; A beam column, wherein the beam column comprises a flange plate and a beam column web plate, wherein the flange plates are arranged at both ends of the beam column web plate, a fifth notch and a sixth notch are respectively provided on both sides of the flange plate, and the beam column web plate is provided with a second elongated through hole; a connecting cover plate, the connecting cover plate comprising a web cover plate, a first flange cover plate, and a second flange cover plate, the first flange cover plate being provided with a third notch adapted to the first notch and the fifth notch, the first flange cover plate being provided with a first bolt hole, the second flange cover plate being provided with a fourth notch adapted to the second notch and the sixth notch, and the second flange cover plate being provided with a second bolt hole; Bolt groups, the two ends of the web cover are respectively fixed to the beam column web and the cantilever web by the bolt groups, and the bolt groups fix the first flange cover, the outer ring plate, the flange plate and the second flange cover.

2. The interlocking beam-column node of the prefabricated steel structure according to claim 1, characterized in that: The first flange cover plate is provided with a first ridge, the first ridge is located at the edge of the third slot, and the side surface of the first ridge is against the side surface of the flange plate and the side surface of the outer ring plate. The second flange cover plate is provided with a second ridge, the second ridge is located at the edge of the fourth slot, and the side surface of the second ridge is against the side surface of the flange plate and the side surface of the outer ring plate.

3. The interlocking beam-column node of the prefabricated steel structure according to claim 2, characterized in that: The thickness of the first convex strip is d1, the thickness of the second convex strip is d2, the thickness of the flange plate and the outer ring plate are both D, then D=d1+d2.

4. The interlocking beam-column node of the prefabricated steel structure according to claim 2, characterized in that: The first convex strip is provided with a groove, the second convex strip is provided with a protrusion, and the groove corresponds to the protrusion; or The first convex strip is provided with a protrusion, and the second convex strip is provided with a groove, and the groove corresponds to the protrusion.

5. The interlocking beam-column node of the prefabricated steel structure according to claim 1, characterized in that: A plurality of first slots are evenly arranged transversely on one side of the outer ring plate, a plurality of second slots are evenly arranged transversely on the other side of the outer ring plate, a plurality of fifth slots are evenly arranged transversely on one side of the flange plate, a plurality of sixth slots are evenly arranged transversely on the other side of the flange plate, a plurality of third slots are evenly arranged transversely on one side of the first flange cover plate, a plurality of fourth slots are evenly arranged transversely on one side of the second flange cover plate, a longitudinal length of the first slot and a longitudinal length of the fifth slot are greater than or equal to a longitudinal length of the third slot, and a longitudinal length of the second slot and a longitudinal length of the sixth slot are greater than or equal to a longitudinal length of the fourth slot.

6. The interlocking beam-column node of the prefabricated steel structure according to claim 1, characterized in that: The first notch and the second notch are staggered, and the fifth notch and the sixth notch are staggered; or The first notch and the second notch are asymmetrically arranged, and the fifth notch and the sixth notch are asymmetrically arranged.

7. The interlocking beam-column node of the prefabricated steel structure according to claim 1, characterized in that: The range of the angle α between the length direction of the third notch and the length direction of the beam column is: 80°≤α≤90°, the fourth notch is located on both sides of the beam column web, and the range of the angle β between the length direction of the fourth notch and the length direction of the beam column is: 80°≤β≤α.

8. The interlocking beam-column node of the prefabricated steel structure according to claim 1, characterized in that: The cross sections of the first notch, the second notch, the third notch, the fourth notch, the fifth notch and the sixth notch are V-shaped notches, and inner sidewalls of the V-shaped notches have burrs.

9. The interlocking beam-column node of the prefabricated steel structure according to claim 1, characterized in that: The bolt group includes a first bolt, a second bolt and a third bolt, and the two ends of the web cover are respectively fixed to the beam-column web by the third bolt. After the first bolt is inserted into the first bolt hole, the first elongated through hole and the second bolt hole in sequence, one end of the first flange cover, the outer ring plate and one end of the second flange cover are fixedly connected. After the second bolt is inserted into the first bolt hole, the second elongated through hole and the second bolt hole in sequence, the other end of the first flange cover, the flange plate and the other end of the second flange cover are fixedly connected.

10. The interlocking beam-column node of the prefabricated steel structure according to claim 1, characterized in that: The outer ring plate includes a square ring plate and a trapezoidal plate. The square ring plate is welded to the square steel pipe column. The trapezoidal plate is connected to the square ring plate. The first notch and the second notch are respectively arranged on both sides of the trapezoidal plate. The first long through hole is arranged on the trapezoidal plate.

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