Rigid connection node structure of box-shaped steel beam and bent H-shaped steel beam

Abstract

The utility model relates to a rigid connection node structure of a box-shaped steel beam and a bent H-shaped steel beam. The rigid connection node structure comprises the box-shaped steel beam, a first H-shaped steel beam, a second H-shaped steel beam, a top rib plate and a bottom rib plate, the top rib plate is vertically fixed at the upper end of the box-shaped steel beam, the bottom rib plate is vertically fixed at the lower end of the box-shaped steel beam, the outer side of the top rib plate is flush with the outer side of one side of the box-shaped steel beam, and the outer side of the bottom rib plate is flush with the outer side of the other side of the box-shaped steel beam; one end of the first H-shaped steel beam is fixed on a fixed surface formed by the bottom rib plate and the box-shaped steel beam, and one end of the second H-shaped steel beam is fixed on a fixed surface formed by the top rib plate and the box-shaped steel beam. Compared with the prior art, the utility model has the advantages that the rigid connection node is convenient to weld, the welding quality is higher, the later detection and maintenance are convenient, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, in particular to a rigid connection node structure of a box-shaped steel beam and a curved H-shaped steel beam. Background Art

[0002] With the rapid development of my country's economy, the current architectural design products have higher requirements in terms of aesthetics, especially in various venues and buildings that use steel structures as building materials. The structural design of such buildings often encounters various curved connected structural components.

[0003] At present, in order to ensure the node stiffness of curved structural members, at the connection parts where steel beams intersect, a variable cross-section method is often used, in which the height of one steel beam is gradually reduced at a certain slope or the height of another steel beam is gradually increased at a certain slope near the intersection, to ensure that one steel beam can connect to the other steel beam at the node position. Due to the different curvatures of curved steel beams at different connection parts, the variable cross-section method of each component is different, and processing and on-site splicing are more difficult. The welds at the variable cross-section parts are mostly three-dimensional curves, which are difficult to weld. Increasing the height of the steel beam will affect the smoothness of the architectural shape at the node position, and produce right-angle protrusions in the smooth curved surface, which will have a certain impact on the architectural shape. Reducing the height of the steel beam will lead to a reduction in the weld area, higher stress, and reduced fatigue resistance, affecting the service life of the node.

[0004] Related literature also discloses measures such as thickening steel plates at the nodes with variable cross-sections to reduce weld stress at the joints of the structure nodes and avoid fatigue damage under high stress conditions. However, the connection structure of the variable cross-section thickened steel plates is relatively complex, resulting in internal stiffening ribs and corresponding hidden welds on the inside. This not only makes processing and splicing difficult, but also makes it difficult to detect and maintain the welds. Utility Model Content

[0005] The purpose of the utility model is to provide a rigid connection node structure of a box-type steel beam and a curved H-shaped steel beam in order to overcome the defects of the above-mentioned prior art, such as the relatively complex connection structure of the variable-section thickened steel plate, the generation of internal stiffening ribs and corresponding inner hidden welds, the difficulty in processing and splicing, and the inconvenience in subsequent detection and maintenance.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam, comprising a box-shaped steel beam, a first H-shaped steel beam, a second H-shaped steel beam, a top rib plate and a bottom rib plate;

[0008] The top rib is vertically fixed to the upper end of the box-shaped steel beam, the bottom rib is vertically fixed to the lower end of the box-shaped steel beam, the outer side of the top rib is flush with the outer edge of one side of the box-shaped steel beam, and the outer side of the bottom rib is flush with the outer edge of the other side of the box-shaped steel beam;

[0009] One end of the first H-shaped steel beam is fixed on a fixed surface formed by the bottom rib plate and the box-shaped steel beam, and one end of the second H-shaped steel beam is fixed on a fixed surface formed by the top rib plate and the box-shaped steel beam.

[0010] Furthermore, a top stiffening rib is provided between the top rib and the box-shaped steel beam, and one side of the top stiffening rib is vertically connected to the top rib, and the other side of the top stiffening rib is vertically connected to the box-shaped steel beam.

[0011] Furthermore, there are multiple top stiffening ribs, and each top stiffening rib is evenly spaced and distributed on one side of the top rib.

[0012] Further, the box-shaped steel beam comprises a first web plate of the box-shaped steel beam, and the second H-shaped steel beam comprises a second H-shaped steel beam upper flange plate, a second H-shaped steel beam web plate and a second H-shaped steel beam lower flange plate connected in sequence;

[0013] The upper flange plate of the second H-shaped steel beam is fixed to the outer side of the top rib plate, the lower flange plate of the second H-shaped steel beam is fixed to the outer side of the first web plate of the box-shaped steel beam, and the web plate of the second H-shaped steel beam is vertically fixed to the fixing surface formed by the first web plate of the box-shaped steel beam and the top rib plate.

[0014] Furthermore, the thickness of the top stiffening rib plate is 0-2 mm greater than the thickness of the web plate of the second H-shaped steel beam, and the thickness of the top rib plate is 0-2 mm greater than the thickness of the upper flange plate of the second H-shaped steel beam.

[0015] Furthermore, a bottom stiffening rib is provided between the bottom rib and the box-shaped steel beam, and one side of the bottom stiffening rib is vertically connected to the bottom rib, and the other side of the bottom stiffening rib is vertically connected to the box-shaped steel beam.

[0016] Furthermore, there are multiple bottom stiffening ribs, and each bottom stiffening rib is evenly spaced and distributed on one side of the bottom rib.

[0017] Further, the box-shaped steel beam comprises a second web plate of the box-shaped steel beam, and the first H-shaped steel beam comprises a first H-shaped steel beam upper flange plate, a first H-shaped steel beam web plate and a first H-shaped steel beam lower flange plate which are sequentially connected;

[0018] The upper flange plate of the first H-shaped steel beam is fixed to the outer side of the second web plate of the box-shaped steel beam, the lower flange plate of the first H-shaped steel beam is fixed to the outer side of the bottom rib plate, and the web plate of the first H-shaped steel beam is vertically fixed to the fixing surface formed by the second web plate of the box-shaped steel beam and the bottom rib plate.

[0019] Furthermore, the thickness of the bottom stiffening rib plate is 0-2 mm greater than the thickness of the web plate of the first H-shaped steel beam, and the thickness of the bottom rib plate is 0-2 mm greater than the thickness of the lower flange plate of the first H-shaped steel beam.

[0020] Furthermore, the top stiffening ribs and the bottom stiffening ribs are both triangular structures, the top stiffening ribs are arranged in parallel with the web of the second H-shaped steel beam, and the bottom stiffening ribs are arranged in parallel with the web of the first H-shaped steel beam.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] (1) In this scheme, a top rib is arranged at the upper end of the box-shaped steel beam and a bottom rib is arranged at the lower end, so that the connecting surfaces on both sides of the box-shaped steel beam match with the curved H-shaped steel beam, so that the steel beam forms a stable rigid connection node with the curved steel beams on both sides without changing the cross-section, thereby ensuring the structural force safety of the node.

[0023] The original spatial shape of the steel beam can be retained. The ribs and stiffening ribs set at the top and bottom of the box-shaped steel beam match the curved surface of the building space, better reflecting the curved shape of the building. At the same time, the welds between the curved H-shaped steel beam, ribs and stiffening ribs and the box-shaped steel beam are kept on a certain vertical or horizontal plane, which is convenient for welding and has high weld quality. The connecting welds are concentrated at the ribs and stiffening ribs at the top and bottom of the box-shaped steel beam, the flange and web of the H-shaped steel beam, and there are no hidden welds. Therefore, it is possible to quickly check the exposed welds to determine whether the node is in normal working condition, which is convenient for later inspection and maintenance.

[0024] (2) In this scheme, the nodes formed by the ribs and stiffening ribs and the box-type steel beams can adjust the heights of the top and bottom ribs and stiffening ribs of the box-type steel beams according to the different curvatures of the curved H-shaped steel beams. This is suitable for node connections of different shapes and better expresses the architectural shape. It is particularly suitable for occasions where the curvature of the curved surface changes. Compared with the existing connection methods, it has a wider range of applications.

[0025] (3) This scheme fully considers the rigid connection effect of the component connection. Weld connections are set at the upper and lower flanges and web positions of the corresponding curved H-shaped steel beams to ensure the load transfer of the node, avoid stress concentration caused by the cross-sectional changes of the component itself, and improve the service life of the node.

[0026] (4) In this scheme, the components connected by the nodes do not need to have variable cross-sections. The shape of the connecting weld is adjusted from a three-dimensional spatial curve of a variable cross-section method to a plane curve maintained on a certain horizontal or vertical plane, thereby greatly reducing the difficulty of processing and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a rigid connection node provided by the utility model;

[0028] Figure 2 A schematic diagram of the structure of the top rib plate and stiffening rib plate of the box-shaped steel beam provided by the utility model;

[0029] Figure 3 A schematic diagram of the structure of the bottom ribs and stiffening ribs of the box-shaped steel beam provided by the utility model;

[0030] Figure 4 A schematic diagram of the welding structure of the rib plate and stiffening rib plate and the box-type steel beam provided by the utility model;

[0031] Figure 5 A schematic diagram of the welding structure of the box-shaped steel beam and the curved H-shaped steel beam provided by the utility model;

[0032] In the figure: 1, box steel beam, 2, first H-shaped steel beam, 3, second H-shaped steel beam, 4, top stiffening rib plate, 5, bottom stiffening rib plate, 6, top rib plate, 7, bottom rib plate; 11, upper flange plate of box steel beam, 12, lower flange plate of box steel beam, 13, first web plate of box steel beam, 14, second web plate of box steel beam; 21, upper flange plate of first H-shaped steel beam, 22, lower flange plate of first H-shaped steel beam, 23, web plate of first H-shaped steel beam; 31, upper flange plate of second H-shaped steel beam, 32, lower flange plate of second H-shaped steel beam, 33, web plate of second H-shaped steel beam; 41, first top stiffening rib plate, 42, second top stiffening rib plate Rib, 43, third top stiffening rib, 51, first bottom stiffening rib, 52, second bottom stiffening rib, 53, third bottom stiffening rib; 4111, connection weld between first top stiffening rib and upper flange plate of box-type steel beam, 4211, connection weld between second top stiffening rib and upper flange plate of box-type steel beam, 4311, connection weld between third top stiffening rib and upper flange plate of box-type steel beam, 4144, connection weld between first top stiffening rib and top rib, 4244, connection weld between second top stiffening rib and top rib, 4344, connection weld between third top stiffening rib and top rib, 44 11. The connection weld between the top rib and the upper flange of the box-type steel beam, 5112. The connection weld between the first bottom stiffening rib and the lower flange of the box-type steel beam, 5212. The connection weld between the second bottom stiffening rib and the lower flange of the box-type steel beam, 5312. The connection weld between the third bottom stiffening rib and the lower flange of the box-type steel beam, 5154. The connection weld between the first bottom stiffening rib and the bottom rib, 5254. The connection weld between the second bottom stiffening rib and the bottom rib, 5354. The connection weld between the third bottom stiffening rib and the bottom rib, 5412. The connection weld between the bottom rib and the lower flange of the box-type steel beam; 2114. The first The connecting weld between the upper flange plate of the H-shaped steel beam and the second web plate of the box-shaped steel beam, 2314, the connecting weld between the web plate of the first H-shaped steel beam and the second web plate of the box-shaped steel beam, 2354, the connecting weld between the web plate of the first H-shaped steel beam and the bottom rib plate, 2254, the connecting weld between the lower flange plate of the first H-shaped steel beam and the bottom rib plate, 3144, the connecting weld between the upper flange plate of the second H-shaped steel beam and the top rib plate, 3344, the connecting weld between the web plate of the second H-shaped steel beam and the top rib plate, 3313, the connecting weld between the web plate of the second H-shaped steel beam and the first web plate of the box-shaped steel beam, 3213, the connecting weld between the lower flange plate of the second H-shaped steel beam and the first web plate of the box-shaped steel beam. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0037] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] Example 1

[0040] like Figure 1As shown, this embodiment provides a rigid connection node structure of a box-shaped steel beam and a curved H-shaped steel beam, including a box-shaped steel beam 1, a first H-shaped steel beam 2, a second H-shaped steel beam 3, a top rib plate 6 and a bottom rib plate 7;

[0041] The top rib plate 6 is vertically fixed to the upper end of the box-shaped steel beam 1, and the bottom rib plate 7 is vertically fixed to the lower end of the box-shaped steel beam 1. The outer side of the top rib plate 6 is flush with the outer edge of one side of the box-shaped steel beam 1, and the outer side of the bottom rib plate 7 is flush with the outer edge of the other side of the box-shaped steel beam 1.

[0042] Among them, one end of the first H-shaped steel beam 2 is fixed on the fixing surface formed by the bottom rib plate 7 and the box-shaped steel beam 1, and one end of the second H-shaped steel beam 3 is fixed on the fixing surface formed by the top rib plate 6 and the box-shaped steel beam 1.

[0043] Specifically, a top stiffening rib plate 4 is provided between the top rib plate 6 and the box-shaped steel beam 1, and one side of the top stiffening rib plate 4 is vertically connected to the top rib plate 6, and the other side is vertically connected to the box-shaped steel beam 1. There are multiple top stiffening rib plates 4, and each top stiffening rib plate is evenly spaced and distributed on one side of the top rib plate 6.

[0044] The box-shaped steel beam 1 comprises a first web plate 13 of the box-shaped steel beam, and the second H-shaped steel beam 3 comprises a second H-shaped steel beam upper flange plate 31, a second H-shaped steel beam web plate 33 and a second H-shaped steel beam lower flange plate 32 which are connected in sequence;

[0045] The second H-beam upper flange plate 31 is fixed to the outer side of the top rib plate 6, the second H-beam lower flange plate 32 is fixed to the outer side of the first web plate 13 of the box-shaped steel beam, and the second H-beam web plate 33 is vertically fixed to the fixing surface formed by the first web plate 13 of the box-shaped steel beam and the top rib plate 6.

[0046] Specifically, a bottom stiffening rib 5 is provided between the bottom rib 7 and the box-shaped steel beam 1, one side of the bottom stiffening rib 5 is vertically connected to the bottom rib 7, and the other side is vertically connected to the box-shaped steel beam 1. There are multiple bottom stiffening ribs 5, and each bottom stiffening rib is evenly spaced and distributed on one side of the bottom rib 7.

[0047] The box-shaped steel beam 1 includes a second web plate 14 of the box-shaped steel beam, and the first H-shaped steel beam 2 includes a first H-shaped steel beam upper flange plate 21, a first H-shaped steel beam web plate 23 and a first H-shaped steel beam lower flange plate 22 which are connected in sequence;

[0048] The first H-beam upper flange plate 21 is fixed to the outer side of the second web plate 14 of the box-shaped steel beam, the first H-beam lower flange plate 22 is fixed to the outer side of the bottom rib plate 7, and the first H-beam web plate 23 is vertically fixed to the fixing surface formed by the second web plate 14 of the box-shaped steel beam and the bottom rib plate 7.

[0049] Optionally, the thickness of the top stiffening rib 4 is 0-2mm greater than the thickness of the web 33 of the second H-beam, and the thickness of the top rib 6 is 0-2mm greater than the thickness of the upper flange 31 of the second H-beam. The thickness of the bottom stiffening rib 5 is 0-2mm greater than the thickness of the web 23 of the first H-beam, and the thickness of the bottom rib 7 is 0-2mm greater than the thickness of the lower flange 22 of the first H-beam. The top stiffening rib 4 and the bottom stiffening rib 5 are both triangular structures, the top stiffening rib 4 is arranged parallel to the web 33 of the second H-beam, and the bottom stiffening rib 5 is arranged parallel to the web 23 of the first H-beam. Improve the consistency of force and deformation on both sides of the top rib 6 and the bottom rib 7, and further improve the stability of the rigid joint.

[0050] In combination with the above implementation content, this embodiment also provides a more specific implementation method:

[0051] The utility model discloses a rigid connection node between a box-shaped steel beam and a curved H-shaped steel beam, which is mainly composed of a box-shaped top rib plate 6 and a top stiffening rib plate 4 arranged on the top of the box-shaped steel beam 1, and a bottom rib plate 7 and a bottom stiffening rib plate 5 arranged on the bottom of the box-shaped steel beam 1, so as to form a box-shaped steel beam containing rib plates and stiffening rib plates, and then respectively connected with a first H-shaped steel beam 2 and a second H-shaped steel beam 3 to form a complete rigid connection node.

[0052] like Figure 2 and Figure 3 As shown, the box-shaped steel beam 1 is composed of an upper flange plate 11 of the box-shaped steel beam, a lower flange plate 12 of the box-shaped steel beam, a first web plate 13 of the box-shaped steel beam, and a second web plate 14 of the box-shaped steel beam. The first H-shaped steel beam 2 is composed of an upper flange plate 21 of the first H-shaped steel beam, a lower flange plate 22 of the first H-shaped steel beam, and a web plate 23 of the first H-shaped steel beam. The second H-shaped steel beam 3 is composed of an upper flange plate 31 of the second H-shaped steel beam, a lower flange plate 32 of the second H-shaped steel beam, and a web plate 33 of the second H-shaped steel beam. The top stiffening rib plate 4 of the box-shaped steel beam is composed of a first top stiffening rib plate 41, a second top stiffening rib plate 42, and a third top stiffening rib plate 43. The steel plate thickness of the first top stiffening rib plate 41, the second top stiffening rib plate 42, and the third top stiffening rib plate 43 can be the same as the thickness of the web plate 33 of the second H-shaped steel beam or increased by 2 mm. The top rib 6 can be the same thickness as the second H-beam upper flange plate 31 or 2 mm thicker. The bottom stiffening rib 5 of the box-shaped steel beam is composed of a first bottom stiffening rib 51, a second bottom stiffening rib 52, and a third bottom stiffening rib 53. The first bottom stiffening rib 51, the second bottom stiffening rib 52, and the third bottom stiffening rib 53 can be the same thickness as the first H-beam web plate 23 or 2 mm thicker. The bottom rib 7 can be the same thickness as the first H-beam lower flange plate 22 or 2 mm thicker.

[0053] Among them, the first top stiffening rib plate 41, the second top stiffening rib plate 42, and the third top stiffening rib plate 43 in the top stiffening rib plate 4 of the box-shaped steel beam parallel to the direction of the web plate 33 of the second H-shaped steel beam can be added accordingly according to the width of the upper flange plate 31 of the second H-shaped steel beam. The added stiffening rib plates should ensure the weld connection with the upper flange plate 11 of the box-shaped steel beam and the top rib plate 6. The same is true for the bottom stiffening rib plate 5 of the box-shaped steel beam.

[0054] The specific implementation process is as follows: the first top stiffening rib 41, the second top stiffening rib 42, the third top stiffening rib 43 and the top rib 6 are connected to form the top rib and stiffening rib of the box-shaped steel beam through the connecting weld 4144 between the first top stiffening rib and the top rib, the connecting weld 4244 between the second top stiffening rib and the top rib, and the connecting weld 4344 between the third top stiffening rib and the top rib. The first bottom stiffening rib 51, the second bottom stiffening rib 52, the third bottom stiffening rib 53 and the bottom rib 7 are connected to form the bottom rib and stiffening rib of the box-shaped steel beam through the connecting weld 5154 between the first bottom stiffening rib and the bottom rib, the connecting weld 5254 between the second bottom stiffening rib and the bottom rib, and the connecting weld 5354 between the third bottom stiffening rib and the bottom rib.

[0055] The top ribs and stiffening ribs of the box-shaped steel beam are connected to the box-shaped steel beam 1 through the connection welds 4111 between the first top stiffening ribs and the upper flange of the box-shaped steel beam, 4211 between the second top stiffening ribs and the upper flange of the box-shaped steel beam, 4311 between the third top stiffening ribs and the upper flange of the box-shaped steel beam, and 4411 between the top ribs and the upper flange of the box-shaped steel beam. The bottom ribs and stiffening ribs of the box-shaped steel beam are connected to the box-shaped steel beam 1 through the connection welds 5112 between the first bottom stiffening ribs and the lower flange of the box-shaped steel beam, 5212 between the second bottom stiffening ribs and the lower flange of the box-shaped steel beam, 5312 between the third bottom stiffening ribs and the lower flange of the box-shaped steel beam, and 5412 between the bottom ribs and the lower flange of the box-shaped steel beam. Thus, a box-shaped steel beam including ribs and stiffening ribs is formed.

[0056] like Figure 4 and Figure 5As shown, the first H-shaped steel beam 2 is connected to the box-shaped steel beam containing ribs and stiffening ribs through the connection weld 2114 between the upper flange plate of the first H-shaped steel beam and the second web plate of the box-shaped steel beam, the connection weld 2314 between the web plate of the first H-shaped steel beam and the second web plate of the box-shaped steel beam, the connection weld 2354 between the web plate of the first H-shaped steel beam and the bottom rib plate, and the connection weld 2254 between the lower flange plate of the first H-shaped steel beam and the bottom rib plate. The second H-shaped steel beam 3 is connected to the box-shaped steel beam containing ribs and stiffening ribs through the connection weld 3144 between the upper flange plate of the second H-shaped steel beam and the top rib plate, the connection weld 3344 between the web plate of the second H-shaped steel beam and the top rib plate, the connection weld 3313 between the web plate of the second H-shaped steel beam and the first web plate of the box-shaped steel beam, and the connection weld 3213 between the lower flange plate of the second H-shaped steel beam and the first web plate of the box-shaped steel beam. A rigid connection node between the box-shaped steel beam and the curved H-shaped steel beam is formed.

[0057] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A rigid joint structure of a box-type steel beam and a curved H-shaped steel beam, characterized in that: It comprises a box-shaped steel beam (1), a first H-shaped steel beam (2), a second H-shaped steel beam (3), a top rib plate (6) and a bottom rib plate (7); The top rib plate (6) is vertically fixed to the upper end of the box-shaped steel beam (1), and the bottom rib plate (7) is vertically fixed to the lower end of the box-shaped steel beam (1). The outer side of the top rib plate (6) is flush with the outer edge of one side of the box-shaped steel beam (1), and the outer side of the bottom rib plate (7) is flush with the outer edge of the other side of the box-shaped steel beam (1). One end of the first H-shaped steel beam (2) is fixed on a fixed surface formed by a bottom rib plate (7) and a box-shaped steel beam (1), and one end of the second H-shaped steel beam (3) is fixed on a fixed surface formed by a top rib plate (6) and a box-shaped steel beam (1).

2. A rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 1, characterized in that: A top stiffening rib (4) is provided between the top rib (6) and the box-shaped steel beam (1); one side of the top stiffening rib (4) is vertically connected to the top rib (6), and the other side of the top stiffening rib (4) is vertically connected to the box-shaped steel beam (1).

3. The rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 2, characterized in that: The number of the top stiffening ribs (4) is multiple, and each of the top stiffening ribs is distributed at equal intervals on one side of the top rib plate (6).

4. The rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 2, characterized in that: The box-shaped steel beam (1) comprises a first web plate (13) of the box-shaped steel beam, and the second H-shaped steel beam (3) comprises a second H-shaped steel beam upper flange plate (31), a second H-shaped steel beam web plate (33) and a second H-shaped steel beam lower flange plate (32) which are connected in sequence; The second H-shaped steel beam upper flange plate (31) is fixed to the outer side of the top rib plate (6), the second H-shaped steel beam lower flange plate (32) is fixed to the outer side of the first web plate (13) of the box-shaped steel beam, and the second H-shaped steel beam web plate (33) is vertically fixed to the fixing surface formed by the first web plate (13) of the box-shaped steel beam and the top rib plate (6).

5. The rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 4, characterized in that: The thickness of the top stiffening rib plate (4) is 0-2 mm greater than the thickness of the web plate (33) of the second H-shaped steel beam, and the thickness of the top rib plate (6) is 0-2 mm greater than the thickness of the upper flange plate (31) of the second H-shaped steel beam.

6. The rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 5, characterized in that: A bottom stiffening rib (5) is provided between the bottom rib (7) and the box-shaped steel beam (1); one side of the bottom stiffening rib (5) is vertically connected to the bottom rib (7), and the other side of the bottom stiffening rib (5) is vertically connected to the box-shaped steel beam (1).

7. The rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 6, characterized in that: The number of the bottom stiffening ribs (5) is multiple, and the bottom stiffening ribs are distributed at equal intervals on one side of the bottom rib plate (7).

8. The rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 6, characterized in that: The box-shaped steel beam (1) comprises a second web plate (14) of the box-shaped steel beam, and the first H-shaped steel beam (2) comprises a first H-shaped steel beam upper flange plate (21), a first H-shaped steel beam web plate (23) and a first H-shaped steel beam lower flange plate (22) which are connected in sequence; The first H-shaped steel beam upper flange plate (21) is fixed to the outer side of the second web plate (14) of the box-shaped steel beam, the first H-shaped steel beam lower flange plate (22) is fixed to the outer side of the bottom rib plate (7), and the first H-shaped steel beam web plate (23) is vertically fixed to a fixing surface formed by the second web plate (14) of the box-shaped steel beam and the bottom rib plate (7).

9. The rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 8, characterized in that: The thickness of the bottom stiffening rib plate (5) is 0-2 mm greater than the thickness of the web plate (23) of the first H-shaped steel beam, and the thickness of the bottom rib plate (7) is 0-2 mm greater than the thickness of the lower flange plate (22) of the first H-shaped steel beam.

10. The rigid joint structure of a box-shaped steel beam and a curved H-shaped steel beam according to claim 6, characterized in that: The top stiffening rib plate (4) and the bottom stiffening rib plate (5) are both triangular structures; the top stiffening rib plate (4) is arranged in parallel with the second H-shaped steel beam web plate (33); and the bottom stiffening rib plate (5) is arranged in parallel with the first H-shaped steel beam web plate (23).

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