Cross-shaped end-plate connection joint structure

Abstract

The application provides a cross-shaped end plate connecting node structure, and belongs to the technical field of building engineering, which comprises an H-shaped steel column, two I-shaped beam plates, two column web reinforcement plates and a steel clamp; the two I-shaped beam plates are symmetrically arranged on the outer sides of the two column flanges of the H-shaped steel column; the two column web reinforcement plates are respectively arranged on the front and back sides of the column web plate of the H-shaped steel column, the column web reinforcement plate is provided with two positioning plates which are longitudinally and spacedly arranged, and the two positioning plates are correspondingly arranged with the two beam flanges of the I-shaped beam plate; the adjacent positioning plate and the beam flange are clamped by means of the steel clamp which penetrates through the column flange, the two ends of the steel clamp are both provided with high-strength bolts, and the two high-strength bolts are respectively connected with the positioning plate and the beam flange. The cross-shaped end plate connecting node structure provided by the application effectively reduces the welding residual stress, fully utilizes the tensile bearing capacity and the shear bearing capacity of the high-strength bolt, and guarantees the stress performance of the node and the overall quality of the project.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and more specifically, relates to a novel cross-shaped end plate connection node structure. Background Technology

[0002] For beam-column connections with seismic performance requirements, the beam-column joint is an important force transmission hub. Under seismic loading, damage to the structural components of the joint should be minimized. This requires that the design not only improve its energy dissipation capacity but also its stiffness.

[0003] In the design of high-rise buildings, the beam-column connection is the key to the structural node design of high-rise buildings. Its performance directly affects the strength, stiffness and stability of the structure. In the past, there have been many studies on the weakening of the beam part, but buckling often occurs.

[0004] Traditional joint designs often rely on full-penetration butt welds, failing to leverage the advantages of beam-column joints and the inherent flexural capacity of the beam itself. This also fails to fully utilize the "strong joint, weak member" design principle in seismic design. Furthermore, on-site installation involves a significant amount of welding work; potential welding quality issues, and residual stresses generated during welding, all negatively impact the joint's load-bearing capacity and the overall quality of the project. Summary of the Invention

[0005] The purpose of this invention is to provide a novel cross-shaped end plate connection node structure, which aims to solve the problems of large workload in node installation and welding, and residual stress on the components caused by welding affecting the stress performance of the node and the overall quality of the project.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a novel cross-shaped endplate connection node structure, comprising:

[0007] H-beam steel columns;

[0008] Two I-beams are symmetrically arranged on the outer sides of the two column flanges of the H-shaped steel column;

[0009] Two column web reinforcing plates are respectively disposed on the front and rear sides of the web of the H-shaped steel column. The column web reinforcing plates have two positioning plates arranged longitudinally at intervals. The two positioning plates are correspondingly disposed with the two beam flanges of the I-shaped beam plate. The adjacent positioning plates and the beam flanges are connected by steel clamps that pass through the column flanges. High-strength bolts are inserted at both ends of the steel clamps, and the two high-strength bolts are respectively connected to the positioning plates and the beam flanges.

[0010] In another embodiment of this application, the positioning plate and the beam flange have the same thickness, and the steel clamp includes two clamps arranged longitudinally at intervals; both clamps horizontally penetrate the column flange.

[0011] In another embodiment of this application, the steel clamp further includes a connecting plate, which connects the two clamping plates and forms a clamping groove between the two clamping plates. The clamping groove is used to limit the positioning plate and the beam flange.

[0012] In another embodiment of this application, the clamping plate includes a first clamping part, a second clamping part, and a force-receiving part. The first clamping part is used to adhere to the positioning plate, and the second clamping part is used to adhere to the beam flange. The force-receiving part connects the first clamping part and the second clamping part. The force-receiving part adheres to the column flange.

[0013] In another embodiment of this application, the column web reinforcing plate further includes a support plate, the support plate connecting the two positioning plates, and the two side edges of the support plate respectively abutting against the column flanges on both sides.

[0014] In another embodiment of this application, both the column web reinforcing plate and the steel clamp are U-shaped, and the opening of the column web reinforcing plate and the opening of the clamping groove are arranged opposite to each other; the column flange is provided with a U-shaped hole adapted to the steel clamp.

[0015] In another embodiment of this application, the web of the I-beam plate and the web of the column are located in the same plane; the steel clamps located on the front and rear sides of the web of the column are symmetrically arranged along the web of the column.

[0016] In another embodiment of this application, an end plate is provided between the I-beam plate and the column flange; the length of the end plate is greater than the width of the I-beam plate, and the width of the end plate is equal to or less than the width of the column flange and greater than the thickness of the I-beam plate; the steel clamp passes through the end plate.

[0017] As another embodiment of this application, a stiffening rib is provided on the outer side of the beam flange, and the stiffening rib is connected to the end plate; the stiffening rib includes a first welded part connecting the beam flange and a second welded part connecting the end plate and a bearing part, the first welded part and the second welded part are vertically connected, the bearing part is triangular, and a plurality of weight-reducing holes are provided on the bearing part.

[0018] In another embodiment of this application, there are multiple weight-reducing holes, and a reinforcing portion is provided between two adjacent weight-reducing holes. The width of the reinforcing portion is greater than the width of the weight-reducing hole. The length direction of the weight-reducing hole is consistent with the length direction of the second welding portion.

[0019] The beneficial effects of the novel cross-shaped end plate connection node structure provided by the present invention are as follows: Compared with the prior art, the novel cross-shaped end plate connection node structure of the present invention completes the connection of the cross-shaped node by setting the column web reinforcing plate and steel clamps, and fixing the I-shaped beam plate to both sides of the H-shaped steel column with the help of high-strength bolts; it effectively reduces the welding residual stress, and fully utilizes the tensile bearing capacity and shear bearing capacity of the high-strength bolts, ensuring the stress performance of the node and the overall quality of the project. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of the novel cross-shaped end plate connection node structure provided in an embodiment of the present invention;

[0022] Figure 2 This is a structural schematic diagram of an H-shaped steel column provided in an embodiment of the present invention;

[0023] Figure 3 This is a structural schematic diagram of an I-beam slab provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the end plate provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the column web reinforcement plate provided in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the steel clamp provided in an embodiment of the present invention.

[0027] In the diagram: 1. H-shaped steel column; 11. Column web; 12. Column flange; 13. U-shaped hole;

[0028] 2. I-beam slab; 21. Beam web; 22. Beam flange;

[0029] 3. End plate; 31. Through hole;

[0030] 4. Column web reinforcement plate; 41. Positioning plate; 42. Support plate; 43. Bolt holes;

[0031] 5. Steel clamps; 51. Clamping plates; 52. Connecting plates;

[0032] 6. High-strength bolts. Detailed Implementation

[0033] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0034] It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly or indirectly connected to the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] Please see Figures 1 to 6 The novel beam-column end plate 3 connection node structure provided by the present invention will now be described. The novel beam-column end plate 3 connection node structure includes an H-shaped steel column 1, two I-shaped beam plates 2, two column web reinforcing plates 4, and steel clamps 5; the two I-shaped beam plates 2 are symmetrically arranged on the outer sides of the two column flanges 12 of the H-shaped steel column 1; the two column web reinforcing plates 4 are respectively arranged on the front and rear sides of the column web 11 of the H-shaped steel column 1, and the column web reinforcing plates 4 have two positioning plates 41 arranged longitudinally at intervals, and the two positioning plates 41 are correspondingly arranged with the two beam flanges 22 of the I-shaped beam plates 2; the adjacent positioning plates 41 and beam flanges 22 are clamped by steel clamps 5 that penetrate the column flanges 12, and high-strength bolts 6 are passed through both ends of the steel clamps 5, and the two high-strength bolts 6 are respectively connected to the positioning plates and the beam flanges.

[0036] The novel beam-column end plate 3 connection node structure provided by the present invention, compared with the prior art, connects two I-beam plates 2 to both sides of the H-shaped steel column 1, and the H-shaped steel column 1 and the two I-beam plates 2 form a cross-shaped connection node.

[0037] Column web reinforcing plates 4 are provided on both the front and rear sides of the web 11 of the H-shaped steel column 1. The two web reinforcing plates 4 are used to connect the portions of the beam flanges 22 located on both sides of the beam web 21. Each web reinforcing plate 4 includes two positioning plates 41, which are longitudinally spaced and correspond to the two beam flanges 22 of the I-shaped beam 2. This creates four connecting portions on the two beam flanges 22 of the same I-shaped beam 2, with two connecting portions on the same beam flange 22 symmetrically arranged along the beam web 21. Each of the four connecting portions has a connecting hole.

[0038] A steel clamp 5 penetrates the column flange 12. One end of the steel clamp 5 is attached to the positioning plate 41 and connected to the positioning plate 41 by means of a high-strength bolt 6. The other end of the steel clamp 5 is attached to the connecting part of the beam flange 22 and connected to the beam flange 22 by means of a high-strength bolt 6. All four connecting parts are connected to the four positioning plates 41 by means of the steel clamp 5.

[0039] The novel beam-column end plate 3 connection node structure provided by the present invention, by setting column web reinforcing plate 4 and steel clamp 5, and using high-strength bolts 6 to fix the I-shaped beam plate 2 to both sides of the H-shaped steel column 1, completes the connection of the cross-shaped node; effectively reduces welding residual stress, and fully utilizes the tensile bearing capacity and shear bearing capacity of the high-strength bolts 6, ensuring the stress performance of the node and the overall quality of the project.

[0040] Optionally, the clamping member is a horizontal steel plate that horizontally penetrates the column flange 12. The upper or lower end face of the steel plate is attached to the positioning plate 41 and the beam flange 22 to complete the connection between the beam flange 22 and the positioning plate 41. Since the positioning plate 41 is located in the column web and is connected to the web of the H-shaped steel column 1, it can improve the connection strength of the I-beam plate 2. At the same time, the steel clamping member 5, which penetrates the column flange 12, is fitted into the column flange 12. It penetrates the column flange 12 and connects the positioning plates 41 and the beam flange 22 on both sides of the column flange 12. It transfers the weight of the beam flange 22 to the column flange 12 and also to the positioning plate 41, so that the weight of the I-beam plate 2 and other forces are evenly distributed on the H-shaped steel column 1, ensuring its stress stability. In addition, the high-strength bolts 6 have strong tensile and shear bearing capacity, ensuring the tensile and shear performance of the joint structure.

[0041] Optionally, the two positioning plates 41 are vertically welded to the column web 11, or welded to the inside of the column flange 12.

[0042] As a specific embodiment of the novel beam-column end plate 3 connection node structure provided by the present invention, please refer to Figure 1 The positioning plate 41 and the beam flange 22 have the same thickness. The steel clamp 5 includes two clamps 51 arranged longitudinally at intervals. Both clamps 51 horizontally penetrate the column flange 12.

[0043] The positioning plate 41 and the beam flange 22 have the same thickness. The upper end face of the positioning plate 41 is flush with the upper end face of the beam flange 22, and the lower end face of the positioning plate 41 is flush with the lower end face of the beam flange 22. The steel clamp 5 includes two clamping plates 51. The two clamping plates 51 are longitudinally spaced and respectively attached to the upper end face and lower end face of the positioning plate 41 / beam flange 22. Both clamping plates 51 penetrate the column flange 12 and are attached to the positioning plate 41 / beam flange 22, and are fixed by means of high-strength bolts 6.

[0044] The two clamps 51 improve the connection strength between the clamps 51 and the positioning plate 41 / beam flange 22, and also improve the connection strength with the column flange 12.

[0045] As a specific embodiment of the novel beam-column end plate 3 connection node structure provided by the present invention, please refer to Figure 1 and Figure 6 The steel clamp 5 also includes a connecting plate 52, which connects two clamping plates 51 and forms a clamping groove between the two clamping plates 51. The clamping groove is used to limit the positioning plate 41 and the beam flange 22.

[0046] The steel clamp 5 includes two clamping plates 51 and a connecting plate 52 connecting the two clamping plates 51. The connecting plate 52 connects the edges of the two clamping plates 51 or the middle of the two clamping plates 51. Under the action of the connecting plate 52, a clamping groove is formed between the two clamping plates 51, and the positioning plate 41 and the beam flange 22 are both located in the clamping groove.

[0047] Optionally, the connecting plate 52 connects the two clamping plates 51 to the edge away from the column web 11. The connecting plate 52 and the two clamping plates 51 form a U-shaped structural member, and its opening direction faces one side of the column web 11.

[0048] During installation, the two clamping plates 51 are located on the upper and lower sides of the positioning plate 41 / beam flange 22, respectively, and the connecting plate 52 is attached to the edge of the positioning plate 41 / beam flange 22. The combination of the two clamping plates 51 and the connecting plate 52 reduces the possibility of deformation of the positioning plate 41; the connecting plate 52 improves the positioning performance of the two clamping plates 51, while increasing the horizontal limiting and horizontal stress strength.

[0049] Optionally, the connecting plate 52 connects the middle of the two clamping plates 51, and the connecting plate 52 and the two clamping plates 51 form an I-shaped structural member, with the opening of one of them facing one side of the column web plate 11.

[0050] During installation, the column flange 12 is provided with an I-shaped through hole 31 that is compatible with the steel clamp 5. The steel clamp 5 passes through the I-shaped through hole 31, and one side of its two clamps 51 is located at the upper and lower ends of the positioning plate 41 / beam flange 22, respectively. The other side of the two clamps 51 is located outside the connecting plate 52 and extends away from the column web 11. The extended section is used to improve the bending and shear bearing capacity of the steel clamps 51.

[0051] As a specific embodiment of the novel beam-column end plate 3 connection node structure provided by the present invention, please refer to Figure 1 and Figure 6 The clamping plate 51 includes a first clamping part, a second clamping part, and a force-bearing part. The first clamping part is used to adhere to the positioning plate 41, and the second clamping part is used to adhere to the beam flange 22. The force-bearing part connects the first clamping part and the second clamping part. The force-bearing part adheres to the column flange 12.

[0052] Each clamping plate 51 includes a first clamping part, a second clamping part, and a force-bearing part. The first clamping part is located on the inner side of the column flange 12 and is used to fit onto the positioning plate 41. The second clamping part is located on the outer side of the column flange 12 and is used to fit onto the beam flange 22. The force-bearing part penetrates the column flange 12 and fits onto the column flange 12.

[0053] The thicknesses of the first and second clamping parts and the force-bearing part are all the same. The thickness of the connecting part is the same as the thickness of the clamping plate 51. The clamping part is integrally machined, and the connecting part is welded to the clamping plate 51.

[0054] Optionally, the thickness of the force-bearing part is greater than the thickness of the first clamping part and the second clamping part.

[0055] As a specific embodiment of the novel beam-column end plate 3 connection node structure provided by the present invention, please refer to Figure 1 and Figure 5 The column belly reinforcing plate 4 also includes a support plate 42, which connects to two positioning plates 41. The two side edges of the support plate 42 abut against the column flanges 12 on both sides.

[0056] During installation, the support plate 42 is pressed against the column web 11 by the steel clamp 5, and the two sides of the support are attached to the inner side of the column flange 12. The steel clamp 5 passes through the column flange 12 and is connected to the positioning plate 41 by means of high-strength bolts 6. After the steel clamp 5 is positioned, the beam flange 22 is inserted into the clamping groove of the steel clamp 5 and fixed by means of high-strength bolts 6.

[0057] Optionally, the support plate 42 is welded to the column flange 12. During installation, the support plate 42 is first positioned and welded so that the positioning plate 41 corresponds to the middle of the U-shaped groove on the column flange 12; then the steel clamp 5 passes through the column flange 12 and is fixed to the positioning plate 41; finally, the beam flange 22 is fixed to the steel clamp 5.

[0058] Optionally, bolt holes 43 are provided at both ends of the positioning plate 41, and the two bolt holes 43 are symmetrical along the center line of the positioning plate 41.

[0059] As a specific embodiment of the novel beam-column end plate 3 connection node structure provided by the present invention, please refer to Figure 1 and Figure 5 Both the column belly reinforcing plate 4 and the steel clamp 5 are U-shaped, and the opening of the column belly reinforcing plate 4 and the opening of the clamping groove are arranged opposite to each other; the column flange 12 is provided with a U-shaped hole 13 that is compatible with the steel clamp 5.

[0060] The support plate 42 is attached to the web plate 11, and two positioning plates 41 are connected to the upper and lower ends of the support plate 42. The support plate 42 and the two positioning plates 41 combine to form a U-shaped structure, with the opening of the U-shape facing outwards, i.e., towards the side away from the web plate 11. The opening of the clamping groove of the steel clamp 5 faces the side of the web plate 11, and the two are interlocked. The positioning plates 41 are fitted into the clamping groove.

[0061] Optionally, the web 21 of the I-beam slab 2 and the web 11 of the column are located in the same plane; steel clamps 5 located on the front and rear sides of the web 11 are symmetrically arranged along the web 11. The thickness of the web 11 is greater than or equal to the thickness of the web 21, and the centerline of the web 11 and the centerline of the web 21 are located in the same plane. In this case, the web reinforcement plates 4 are symmetrically arranged on the front and rear sides of the web 11, and the edge of the positioning plate 41 is on the same straight line as the edge of the beam flange 22.

[0062] The steel clamp 5 is clamped on the positioning plate 41 and the beam flange 22, and the edges of the positioning plate 41 and the beam flange 22 are both attached to the bottom of the clamping groove.

[0063] As a specific embodiment of the novel beam-column end plate 3 connection node structure provided by the present invention, please refer to Figure 1 and Figure 4 An end plate 3 is provided between the I-beam slab 2 and the column flange 12; the length of the end plate 3 is greater than the width of the I-beam slab 2, and the width of the end plate 3 is equal to or less than the width of the column flange 12 and greater than the thickness of the I-beam slab 2; the steel clamp 5 passes through the end plate 3.

[0064] An end plate 3 is attached to the outer side of the column flange 12, and the end of the I-beam slab 2 abuts against the side of the end plate 3 away from the column flange 12. The area of ​​the side of the end plate 3 that contacts the I-beam slab 2 is larger than the area of ​​the end face of the I-beam slab 2. The length of the end plate 3 is greater than the width of the I-beam slab 2, and the width of the I-beam slab 2 is equal to the distance between the two beam flanges 22. The width of the end plate 3 is equal to or less than the width of the column flange 12 and greater than the thickness of the I-beam slab 2, wherein the width of the column flange 12 is the thickness of the H-shaped steel column 1; the end plate 3 is attached to the outer side of the column flange 12, and its width does not exceed the edge of the column flange 12; the thickness of the I-beam slab 2 is the width of the beam flange 22 of the I-beam slab 2, and the end plate 3 needs to cover the entire width of the beam flange 22.

[0065] Optionally, the edge of the end plate 3 is flush with the edge of the column flange 12.

[0066] The steel clamp 5 is a U-shaped structure with the opening facing inward, and the steel clamp 5 passes through the column flange 12 and the end plate 3 in sequence.

[0067] The end plate 3 has a U-shaped through hole 31, which corresponds one-to-one with the U-shaped hole 13 on the column flange 12 and is the same size. The steel clamp 5 passes through the through hole 31 and the U-shaped hole 13 on the column flange 12 in sequence to fix the end plate 3 to the outside of the column flange 12.

[0068] The steel clamps 5 are symmetrically arranged on the front and rear sides of the column web 11. A first gap is left between the steel clamps 5 and the edge of the column flange 12. The width of the first gap is less than the width of the steel clamps 5 and greater than half the width of the steel clamps 5.

[0069] As a specific embodiment of the novel beam-column end plate 3 connection node structure provided by the present invention, please refer to Figure 1 The outer side of the beam flange 22 is provided with stiffening ribs, and the stiffening ribs are connected to the end plate 3. The stiffening ribs include a first welded part connecting the beam flange 22 and a second welded part connecting the end plate 3, as well as a bearing part. The first welded part and the second welded part are vertically connected. The bearing part is triangular and has several weight-reducing holes.

[0070] A stiffening rib is provided on the side of the beam flange 22 away from the beam web 21. The stiffening rib is connected to the end plate 3 to increase the connection strength. The stiffening rib is triangular in shape and includes a first welded part and a second welded part that are respectively connected to the beam flange 22 and the end plate 3. The first welded part and the second welded part are welded perpendicularly, and both the first welded part and the second welded part are cuboid structures.

[0071] The load-bearing part is triangular, with one right-angled side connecting to the first welded part and the other right-angled side connecting to the second welded part; the load-bearing part is a rigid plate with a certain thickness. Several weight-reduction holes are provided on the load-bearing part. The weight-reduction holes not only reduce weight, but also improve the bending resistance of the joint and play a role in shear energy dissipation, and have good recovery ability.

[0072] Specifically, there are multiple weight-reducing holes, and there is a reinforcing part between two adjacent weight-reducing holes. The width of the reinforcing part is greater than the width of the weight-reducing hole. The length direction of the weight-reducing hole is consistent with the length direction of the second welded part.

[0073] The first weld is horizontally welded to the beam flange 22, and the second weld is longitudinally welded to the end plate 3. The length direction of the weight-reducing hole is consistent with the length direction of the second weld. The load-bearing part consists of a reinforcing part and a weight-reducing hole. The reinforcing part is used to ensure the rigidity and strength of the stiffening rib.

[0074] During installation, first, the column web reinforcing plate 4 and the I-beam plate 2 are positioned. Then, the steel clamp 5 passes through the column flange 12, and one end of the steel clamp 5 is fixed to the positioning plate 41, and the other end of the steel clamp 5 is fixed to the beam flange 22. Next, the high-strength fixing bolt 6 is inserted to fix the first end of the steel clamp 5 to the positioning plate 41 and the other end to the beam flange 22. Finally, the first and second welded parts of the reinforcing rib are welded.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cruciform end-plate connection node structure, characterised in that, The utility model relates to a kind of steel structure, including: H-shaped steel column (1); Two I-beam plates (2) are symmetrically arranged outside two column flanges (12) of the H-shaped steel column (1); Two column web reinforcement plates (4) are respectively arranged on the front and back of the column web plate (11) of the H-shaped steel column (1), the column web reinforcement plate (4) has two positioning plates (41) arranged longitudinally, two positioning plates (41) are arranged correspondingly with two beam flanges (22) of the I-beam plate (2);Adjacent positioning plate (41) and beam flange (22) are clamped by steel clamp (5) penetrating through column flange (12);Two ends of the steel clamp (5) are provided with high-strength bolts, and two high-strength bolts are connected with positioning plate (41) and beam flange (22) respectively; The thickness of the positioning plate (41) and the beam flange (22) is consistent, and the steel clamp (5) includes two clamping plates (51) arranged longitudinally;Two clamping plates (51) are horizontally penetrated through the column flange (12); The steel clamp (5) further includes a connecting plate (52), the connecting plate (52) connects the two clamping plates (51) and forms a clamping groove between the two clamping plates (51), and the clamping groove is used to limit the positioning plate (41) and the beam flange (22); The clamping plate (51) includes a first clamping portion, a second clamping portion, and a stress portion, the first clamping portion is used to fit on the positioning plate (41), and the second clamping portion is used to fit on the beam flange (22); the stress portion connects the first clamping portion and the second clamping portion; the stress portion is fitted with the column flange (12); The column web reinforcement plate (4) further includes a support plate (42), the support plate (42) connects the two positioning plates (41), and the two side edges of the support plate (42) are respectively abutted on the column flanges (12) on both sides.

2. The cruciform end-plate connection joint structure according to claim 1, wherein The column web reinforcement plate (4) and the steel clamp (5) are both U-shaped, and the openings of the column web reinforcement plate (4) and the clamping groove are oppositely arranged; the column flange (12) is provided with a U-shaped hole (13) matched with the steel clamp (5).

3. The cruciform end-plate connection joint structure according to claim 1, wherein The beam web plate (21) of the I-beam plate (2) is located in the same plane as the column web plate (11); the steel clamps (5) on the front and back of the column web plate (11) are symmetrically arranged along the column web plate (11).

4. The cruciform end-plate connection joint structure of claim 3, wherein An end plate (3) is arranged between the I-beam plate (2) and the column flange (12); the length of the end plate (3) is greater than the width of the I-beam plate (2), the width of the end plate (3) is equal to or less than the width of the column flange (12) and greater than the thickness of the I-beam plate (2); the steel clamp (5) penetrates through the end plate (3).

5. The cruciform end-plate connection joint structure according to claim 4, wherein The outer side of the beam flange (22) is provided with a stiffening rib connected with the end plate (3); the stiffening rib comprises a first welding part connected with the beam flange (22), a second welding part connected with the end plate (3), and a bearing part, the first welding part and the second welding part are connected vertically, the bearing part is triangular, and a plurality of lightening holes are formed in the bearing part.

6. The cruciform end-plate connection joint structure of claim 5, wherein The plurality of lightening holes have a reinforcing part between any two adjacent lightening holes, the width of the reinforcing part is greater than the width of the lightening hole; the length direction of the lightening hole is consistent with the length direction of the second welding part.

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