A beam-column torsion joint of a steel structure sloping roof and a mounting method thereof

Abstract

The application discloses a beam-column torsion joint of a steel structure slope roof and a mounting method thereof, and the joint comprises an H-shaped steel column, two transverse H-shaped wedge-shaped steel beams, two cantilever connecting steel beams and two longitudinal H-shaped steel beams. The top of the H-shaped steel column is provided with a bevel matched with a preset inclination angle; the flanges of each transverse H-shaped wedge-shaped steel beam are flush with the top flanges of the H-shaped steel column respectively, the two transverse H-shaped wedge-shaped steel beams are connected to the two sides of the flanges of the H-shaped steel column respectively, and the slopes of the two transverse H-shaped wedge-shaped steel beams are matched with the preset inclination angle; the upper flanges of each cantilever connecting steel beam are flush with the top of the web of the H-shaped steel column respectively, and the two cantilever connecting steel beams are symmetrically connected to the inner sides of the flanges of the H-shaped steel column; each longitudinal H-shaped steel beam is fixedly connected with one cantilever connecting steel beam, and the two longitudinal H-shaped steel beams are symmetrical based on the web of the H-shaped steel column. The cantilever connecting steel beam is moved outward from the connecting position in the application, so that the hinge position is on the beam, thereby achieving the design principle of strong joints and weak components.

Description

Technical Field

[0001] This application relates to the field of building technology, and in particular to a beam-column anti-torsional joint for a steel structure pitched roof and its installation method. Background Technology

[0002] Steel structures have been developed in my country for nearly a century. Compared with concrete structures, steel structures have the characteristics of being lightweight and high-strength, having strong plastic deformation capacity, and good seismic performance, especially in the application of large-span structures.

[0003] As a crucial part of steel structure construction, the design of beam-column joints is particularly important. Beam-column joints refer to the intersections of beams and columns in a frame structure. The main advantages of frame buildings include: flexible space partitioning, light weight, and material savings; the ability to flexibly accommodate building floor plans, facilitating the arrangement of structures requiring large spaces; and the ease of standardization and modularization of beam and column components, enabling the adoption of prefabricated monolithic structures to shorten construction time.

[0004] Traditional beam-column joints are connected to the column by bolting and welding at the beam ends. Failure often occurs at the joint, which fails to meet the design principle of "strong joints, weak components". Furthermore, in pitched roof structures, the steel beams are only rotated at a certain installation angle without any reinforcement measures to enhance the torsional resistance of the joints, resulting in unreasonable joint design. Summary of the Invention

[0005] The main purpose of this application is to provide a beam-column anti-torsional joint for a steel structure pitched roof and its installation method, so as to solve the problems of the existing beam-column joints, which are connected to the column by bolting and welding at the beam end, and the failure often occurs at the joint, which cannot meet the design principle of "strong joint, weak component" and the joint design is unreasonable.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A beam-column torsional joint for a steel structure pitched roof, wherein the steel structure pitched roof has a preset tilt angle, and the beam-column torsional joint includes:

[0008] The H-shaped steel column has a slope at the top that matches the preset inclination angle, and the top of the web of the H-shaped steel column has a bevel that matches the preset inclination angle.

[0009] Two transverse H-shaped wedge steel beams, the flanges of each transverse H-shaped wedge steel beam are flush with the top flange of the H-shaped steel column, the two transverse H-shaped wedge steel beams are respectively connected to both sides of the flange of the H-shaped steel column, and the slopes of the two transverse H-shaped wedge steel beams are matched with the preset inclination angle.

[0010] Two cantilever connecting steel beams are provided, with the upper flange of each cantilever connecting steel beam being flush with the top of the web of the H-shaped steel column. The two cantilever connecting steel beams are symmetrically connected to the inner side of the flange of the H-shaped steel column.

[0011] Two longitudinal H-beams, each of which is fixedly connected to a cantilever connecting beam, are symmetrical about the web of the H-beam column.

[0012] As a further improvement of this application, the beam-column anti-torsion node further includes four trapezoidal ribs, with every two trapezoidal ribs fixedly connected to both sides of the web of a cantilever connecting steel beam, the side of each trapezoidal rib being fixedly connected to the web of the cantilever connecting steel beam, and the upper and lower bottom edges of each trapezoidal rib being fixedly connected to the flange of the cantilever connecting steel beam, respectively.

[0013] As a further improvement of this application, the beam-column anti-torsion node further includes four sealing plates, one side of each sealing plate is fixedly connected to the hypotenuse of a trapezoidal rib, the other side of each sealing plate is fixedly connected to the flange of the H-shaped steel column, and the top and bottom edges of each sealing plate are fixedly connected to the flange of the cantilever connecting steel beam, respectively.

[0014] As a further improvement of this application, the web height of the transverse H-shaped wedge steel beam decreases by a first preset ratio from the H-shaped steel column toward the direction away from the H-shaped steel column, and the flange width of the transverse H-shaped wedge steel beam decreases by a second preset ratio from the H-shaped steel column toward the direction away from the H-shaped steel column.

[0015] As a further improvement of this application, each cantilever connecting steel beam includes a first flange plate and a second flange plate that are parallel to each other, and a supporting web plate that is fixedly connected to the first flange plate and the second flange plate at both ends. The first flange plate is flush with the top flange of the H-shaped steel column, and the supporting web plate is perpendicular to the first flange plate and the second flange plate.

[0016] As a further improvement of this application, each longitudinal H-beam is fixedly connected to each cantilever connecting beam by high-strength bolts passing through a splicing plate, and the flange of each longitudinal H-beam is welded to the flange of the adjacent cantilever connecting beam.

[0017] As a further improvement of this application, the first flange plate and the second flange plate respectively include a rectangular portion, an isosceles trapezoidal portion and a right-angled trapezoidal portion arranged side by side, and a set of opposite sides of the rectangular portion adjacent to the H-shaped steel column are fixedly connected to the flange of the H-shaped steel column.

[0018] As a further improvement of this application, the lower base of the isosceles trapezoidal portion is equal to the longer side of the rectangular portion, the ratio of the upper base to the lower base of the isosceles trapezoidal portion is 2:3, and the length of the lower base of the right trapezoidal portion is equal to the length of the upper base of the isosceles trapezoidal portion.

[0019] As a further improvement of this application, the shape of the sealing plate is a non-rectangular parallelogram, the height of the sealing plate is equal to the distance between the first flange plate and the second flange plate, and the short side of the sealing plate is equal to the waist length of the isosceles trapezoidal portion.

[0020] To achieve the above objectives, this application also provides the following technical solutions:

[0021] An installation method for a beam-column torsional joint, the installation method being applied to the beam-column torsional joint as described above, the installation method comprising:

[0022] A first flange plate and a second flange plate are welded to each side of the web of the H-shaped steel column, so that the first flange plate and the second flange plate are parallel and both have a preset inclination angle;

[0023] A supporting web is welded between the first flange plate and the second flange plate on the same side. The two ends of the supporting web are fixedly connected to the first flange plate and the second flange plate on the same side, respectively. Each supporting web has a bolt hole at the end away from the H-shaped steel column.

[0024] Based on the preset tilt angle, a transverse H-shaped wedge steel beam is welded at each end of the first flange plate along the preset tilt angle.

[0025] A longitudinal H-beam is fixedly connected to one end of each supporting web away from the H-beam column through the bolt holes. The two flanges of each longitudinal H-beam are welded to the first flange plate and the second flange plate on the same side, respectively.

[0026] This application involves welding a first flange plate and a second flange plate to each side of the web of an H-shaped steel column, with all first flange plates having a preset inclination angle. A supporting web plate is welded between the first and second flange plates on the same side, with both ends of the supporting web plate fixedly connected to the first and second flange plates on the same side, respectively. Bolt holes are provided at the end of each supporting web plate away from the H-shaped steel column. Based on the angle direction of the preset inclination angle, a transverse H-shaped wedge steel beam is welded to each end of the first flange plate along the preset inclination angle. A longitudinal H-shaped steel beam is fixedly connected to the end of each supporting web plate away from the H-shaped steel column through bolt holes, with the two flanges of each longitudinal H-shaped steel beam welded to the first and second flange plates on the same side, respectively. This application moves the connection position outward by using cantilevered connecting steel beams, so that the hinge position is on the beam, thereby achieving the design principle of "strong node, weak component". At the same time, trapezoidal ribs and end plates are set on both sides of the cantilevered connecting steel beams to improve the torsional resistance of the beam-column joint of the pitched roof steel structure. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the beam-column anti-torsional joint of the steel structure pitched roof of this application;

[0028] Figure 2 This is a three-dimensional exploded view of an embodiment of the beam-column anti-torsional joint of the steel structure pitched roof of this application;

[0029] Figure 3 This is a three-dimensional structural diagram of two cantilevered steel beams, representing one embodiment of the beam-column torsional joint of the steel structure pitched roof in this application.

[0030] Figure 4 This is a top view of two cantilevered steel beams, representing one embodiment of the beam-column torsional joint of the steel structure pitched roof in this application.

[0031] Figure 5 This is a schematic diagram of the process steps for an embodiment of the beam-column torsional joint installation method of this application;

[0032] Numbering Explanation (in order of first appearance): 1. H-shaped steel column; 2. Transverse H-shaped wedge steel beam; 3. Cantilever connecting steel beam; 4. Longitudinal H-shaped steel beam; 5. Splice plate; 6. Trapezoidal rib plate; 7. End plate; 11. Bevel; 31. First flange plate; 32. Second flange plate; 33. Supporting web plate; 34. Rectangular section; 35. Isosceles trapezoidal section; 36. Right-angled trapezoidal section. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] like Figure 1 As shown, this embodiment provides a beam-column anti-torsion node for a steel structure pitched roof. The steel structure pitched roof has a preset tilt angle. The beam-column anti-torsion node includes an H-shaped steel column 1, two transverse H-shaped wedge steel beams 2, two cantilever connecting steel beams 3, two longitudinal H-shaped steel beams 4, two splicing plates 5, four trapezoidal ribs 6, and four sealing plates 7.

[0037] Among them, see Figure 2The top of the H-shaped steel column 1 has a bevel angle matching the preset inclination angle (this is an angle value, not a solid entity, unlike the bevel mentioned below, which is a solid entity). The top of the web of the H-shaped steel column 1 has a bevel 11 matching the preset inclination angle. The flanges of each transverse H-shaped wedge steel beam 2 are flush with the top flange of the H-shaped steel column 1. Two transverse H-shaped wedge steel beams 2 are connected to both sides of the flange of the H-shaped steel column 1, and the slopes of the two transverse H-shaped wedge steel beams 2 match the preset inclination angle. The upper flange of each cantilever connecting steel beam 3 is flush with the top of the web of the H-shaped steel column 1. Two cantilever connecting steel beams 3 are symmetrically connected to the inner side of the flange of the H-shaped steel column 1. Each longitudinal H-shaped steel beam 4 is fixedly connected to one cantilever connecting steel beam 3. The two longitudinal H-shaped steel beams 4 are based on... The web of the H-shaped steel column 1 is symmetrical; each longitudinal H-shaped steel beam 4 and each cantilever connecting steel beam 3 are fixedly connected by high-strength bolts through a splicing plate 5, and the flange of each longitudinal H-shaped steel beam 4 is welded to the flange of the adjacent cantilever connecting steel beam 3; every two trapezoidal ribs 6 are fixedly connected to both sides of the web of a cantilever connecting steel beam 3, the side of each trapezoidal rib 6 is fixedly connected to the web of the cantilever connecting steel beam 3, and the upper and lower bottom edges of each trapezoidal rib 6 are fixedly connected to the flange of the cantilever connecting steel beam 3; one side of each end plate 7 is fixedly connected to the hypotenuse of a trapezoidal rib 6, the other side of each end plate 7 is fixedly connected to the flange of the H1-shaped steel column 1, and the top and bottom edges of each end plate 7 are fixedly connected to the flange of the cantilever connecting steel beam 3.

[0038] It should be noted that the terms "transverse" and "longitudinal" in the transverse H-shaped wedge steel beam 2 and the longitudinal H-shaped steel beam 4 are only used to distinguish the different orientations of the H-shaped wedge steel beam and the H-shaped steel beam, and are not used to limit the specific orientation of the H-shaped wedge steel beam and the H-shaped steel beam.

[0039] It should be noted that the structure of the H-beam is existing technology. The flanges and webs of the H-beam are also inherent properties of the H-beam. In this embodiment, the flanges and webs at different locations will not be labeled to avoid confusion.

[0040] Preferably, the top of the H-shaped steel column can be cornered at the aforementioned preset inclination angle to form a slope angle that conforms to the preset inclination angle.

[0041] Preferably, the top of the H-shaped steel column 1 is beveled at the same angle as the slope of the roof along its web; the upper flange of the transverse H-shaped wedge steel beam 2 is flush with the top flange of the H-shaped steel column 1 and welded to both sides of the flange of the H-shaped steel column 1, and the slope is consistent with the bevel slope of the H-shaped steel column 1; the upper flange of the cantilever connecting steel beam 3 is flush with the top web of the H-shaped steel column 1 and symmetrically welded to the inner side of the flange of the H-shaped steel column 1; the longitudinal H-shaped steel beam 4 is symmetrically arranged on both sides of the H-shaped steel column 1 and connected to the outer side of the cantilever connecting steel beam 3; the trapezoidal rib plate 6 is vertically welded between the flange and the web of the cantilever connecting steel beam 3; the upper and lower sides of the sealing plate 7 are welded to the flange of the cantilever connecting steel beam 3, and the left and right sides are welded to the hypotenuse of the trapezoidal rib plate 6 and the flange of the H-shaped steel column 1, respectively.

[0042] Preferably, the size parameters of each component in this embodiment, as well as the preset tilt angle and other parameters, can be set according to the actual engineering situation. For example, if the tilt angle of the pitched roof is 20°, then the preset tilt angle is also 20°. Therefore, the size parameters of each component can be adapted and set according to the specific size of the house.

[0043] Furthermore, the web height of the transverse H-shaped wedge steel beam 2 decreases by a first preset ratio from the H-shaped steel column 1 toward the direction away from the H-shaped steel column 1, and the flange width of the transverse H-shaped wedge steel beam 2 decreases by a second preset ratio from the H-shaped steel column 1 toward the direction away from the H-shaped steel column 1.

[0044] Further, see Figure 3 Each cantilever connecting steel beam 3 includes a first flange plate 31 and a second flange plate 32 that are parallel to each other, and a supporting web plate 33 that is fixedly connected to the first flange plate 31 and the second flange plate 32 at both ends. The first flange plate 31 is flush with the top flange of the H-shaped steel column 1, the second flange plate 32 is perpendicular to the web plate plane perpendicular to the H-shaped steel column 1, and the supporting web plate 33 is perpendicular to the first flange plate 31 and the second flange plate 32 respectively.

[0045] Further, see Figure 4 The first flange plate 31 and the second flange plate 32 each include a rectangular portion 34, an isosceles trapezoidal portion 35, and a right-angled trapezoidal portion 36 arranged side by side. A pair of opposite sides of the rectangular portion 34 adjacent to the H-shaped steel column 1 are fixedly connected to the flange of the H-shaped steel column 1.

[0046] Preferably, the supporting web 33 is a rectangular plate, which is vertically welded between the first flange plate 31 and the second flange plate 32, and is located on the vertical bisector of the upper base of the right trapezoidal portion 36.

[0047] Furthermore, the lower base of the isosceles trapezoid 35 is equal to the long side of the rectangular portion 34, the ratio of the upper base to the lower base of the isosceles trapezoid 35 is 2:3, and the length of the lower base of the right trapezoid 36 is equal to the length of the upper base of the isosceles trapezoid 35.

[0048] Furthermore, the shape of the sealing plate 7 is a non-rectangular parallelogram, the height of the sealing plate 7 is equal to the distance between the first flange plate 31 and the second flange plate 32, and the short side of the sealing plate 7 is equal to the waist length of the isosceles trapezoidal portion 35.

[0049] In this embodiment, a first flange plate 31 and a second flange plate 32 are welded to each side of the web of the H-shaped steel column 1. All first flange plates 31 have a preset inclination angle. A supporting web plate 33 is welded between the first flange plate 31 and the second flange plate 32 on the same side. The two ends of the supporting web plate 33 are fixedly connected to the first flange plate 31 and the second flange plate 32 on the same side, respectively. Each supporting web plate 33 has a bolt hole at the end away from the H-shaped steel column 1. A transverse H-shaped wedge steel beam 2 is welded to each end of the first flange plate 31 along the preset inclination angle. A longitudinal H-shaped steel beam 4 is fixedly connected to the end of each supporting web plate 33 away from the H-shaped steel column 1 through bolt holes. The two flanges of each longitudinal H-shaped steel beam 4 are welded to the first flange plate 31 and the second flange plate 32 on the same side, respectively. This application moves the connection position outward by cantilever connecting steel beam 3, so that the hinge position is on the beam, thereby achieving the design principle of "strong node, weak component". At the same time, trapezoidal ribs 6 and sealing plates 7 are set on both sides of the cantilever connecting steel beam 3 to improve the torsional resistance of the beam-column joint of the pitched roof steel structure.

[0050] like Figure 5 As shown, this embodiment provides an example of an installation method for a beam-column torsional joint. This installation method is applied to the beam-column torsional joint as described in the above embodiment, and includes the following steps:

[0051] Step S1: Weld a first flange plate and a second flange plate to both sides of the web of the H-shaped steel column, with the first flange plate and the second flange plate being parallel and both having a preset inclination angle.

[0052] Step S2: Weld a supporting web between the first flange plate and the second flange plate on the same side. The two ends of the supporting web plate are fixedly connected to the first flange plate and the second flange plate on the same side, respectively. Each supporting web plate has a bolt hole at the end away from the H-shaped steel column.

[0053] Step S3: Based on the preset tilt angle, weld a transverse H-shaped wedge steel beam at each end of the first flange plate along the preset tilt angle.

[0054] Step S4: A longitudinal H-beam is fixedly connected to the end of each supporting web away from the H-beam column through bolt holes. The two flanges of each longitudinal H-beam are welded to the first flange plate and the second flange plate on the same side, respectively.

[0055] Preferably, in practical applications, if the first flange plate and the second flange plate are welded first, the middle support plate may not be able to be welded. Therefore, these three are usually welded into a whole before being welded to the H-shaped steel column, and the bolt holes are set at the end away from the H-shaped steel column.

[0056] The components in this method embodiment are based on the above-described device embodiment. For extensions and limitations of this method embodiment, please refer to the above-described device embodiment. This embodiment will not repeat them here.

[0057] In this embodiment, a first flange plate and a second flange plate are welded to each side of the web of the H-shaped steel column, and all first flange plates have a preset inclination angle. A supporting web plate is welded between the first and second flange plates on the same side, and the two ends of the supporting web plate are fixedly connected to the first and second flange plates on the same side, respectively. Bolt holes are opened at the end of each supporting web plate away from the H-shaped steel column. Based on the angle direction of the preset inclination angle, a transverse H-shaped wedge steel beam is welded to each end of the first flange plate along the preset inclination angle. A longitudinal H-shaped steel beam is fixedly connected to the end of each supporting web away from the H-shaped steel column through bolt holes, and the two flanges of each longitudinal H-shaped steel beam are welded to the first and second flange plates on the same side, respectively. This application moves the connection position outward by cantilever connecting steel beams, so that the hinge position is on the beam, thereby achieving the design principle of "strong node, weak component". At the same time, trapezoidal ribs and end plates are set on both sides of the cantilever connecting steel beams to improve the torsional resistance of the beam-column joint of the pitched roof steel structure.

[0058] The specific embodiments of the present invention have been described in detail above, but they are only examples, and this application is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the invention are also within the scope of this application. Therefore, all equivalent changes, modifications, and improvements made without departing from the spirit and principles of this application should be covered within the scope of this application.

Claims

1. A beam-column anti-torsional joint for a steel structure pitched roof, wherein the steel structure pitched roof has a preset tilt angle, characterized in that, The beam-column torsional joint includes: The H-shaped steel column has a slope at the top that matches the preset inclination angle, and the top of the web of the H-shaped steel column has a bevel that matches the preset inclination angle. Two transverse H-shaped wedge steel beams, the flanges of each transverse H-shaped wedge steel beam are flush with the top flange of the H-shaped steel column, the two transverse H-shaped wedge steel beams are respectively connected to both sides of the flange of the H-shaped steel column, and the slopes of the two transverse H-shaped wedge steel beams are matched with the preset inclination angle. Two cantilever connecting steel beams are provided, with the upper flange of each cantilever connecting steel beam being flush with the top of the web of the H-shaped steel column. The two cantilever connecting steel beams are symmetrically connected to the inner side of the flange of the H-shaped steel column. Two longitudinal H-beams, each longitudinal H-beam is fixedly connected to a cantilever connecting beam, and the two longitudinal H-beams are symmetrical about the web of the H-beam column; The beam-column anti-torsion node also includes four trapezoidal ribs. Every two trapezoidal ribs are fixedly connected to both sides of the web of a cantilever connecting steel beam. The side of each trapezoidal rib is fixedly connected to the web of the cantilever connecting steel beam. The upper and lower bottom edges of each trapezoidal rib are fixedly connected to the flange of the cantilever connecting steel beam, respectively. The beam-column anti-torsion node also includes four sealing plates. One side of each sealing plate is fixedly connected to the hypotenuse of a trapezoidal rib, the other side of each sealing plate is fixedly connected to the flange of the H-shaped steel column, and the top and bottom edges of each sealing plate are fixedly connected to the flange of the cantilever connecting steel beam, respectively.

2. The beam-column torsional joint according to claim 1, characterized in that, The web height of the transverse H-shaped wedge steel beam decreases by a first preset ratio from the H-shaped steel column toward the direction away from the H-shaped steel column, and the flange width of the transverse H-shaped wedge steel beam decreases by a second preset ratio from the H-shaped steel column toward the direction away from the H-shaped steel column.

3. The beam-column torsional joint according to claim 1, characterized in that, Each cantilever connecting steel beam includes a first flange plate and a second flange plate that are parallel to each other, and a supporting web plate that is fixedly connected to the first flange plate and the second flange plate at both ends. The first flange plate is flush with the top flange of the H-shaped steel column, and the supporting web plate is perpendicular to the first flange plate and the second flange plate.

4. The beam-column torsional joint according to claim 1, characterized in that, Each longitudinal H-beam is fixedly connected to each cantilever connecting beam by high-strength bolts passing through a splice plate. The flanges of each longitudinal H-beam are welded to the flanges of the adjacent cantilever connecting beams.

5. The beam-column torsional joint according to claim 3, characterized in that, The first flange plate and the second flange plate each include a rectangular portion, an isosceles trapezoidal portion, and a right-angled trapezoidal portion arranged side by side. A pair of opposite sides of the rectangular portion adjacent to the H-shaped steel column are fixedly connected to the flange of the H-shaped steel column.

6. The beam-column torsional joint according to claim 5, characterized in that, The lower base of the isosceles trapezoidal portion is equal to the longer side of the rectangular portion, the ratio of the upper base to the lower base of the isosceles trapezoidal portion is 2:3, and the length of the lower base of the right trapezoidal portion is equal to the length of the upper base of the isosceles trapezoidal portion.

7. The beam-column torsional joint according to claim 5, characterized in that, The sealing plate is a non-rectangular parallelogram, the height of the sealing plate is equal to the distance between the first flange plate and the second flange plate, and the short side of the sealing plate is equal to the leg length of the isosceles trapezoid.

8. A method for installing a beam-column torsional joint, the method being applied to the beam-column torsional joint as described in any one of claims 3 to 7, characterized in that, The installation method includes: A first flange plate and a second flange plate are welded to each side of the web of the H-shaped steel column. The first flange plate and the second flange plate are parallel and each has a preset inclination angle. A supporting web is welded between the first flange plate and the second flange plate on the same side. The two ends of the supporting web are fixedly connected to the first flange plate and the second flange plate on the same side, respectively. Each supporting web has a bolt hole at the end away from the H-shaped steel column. Based on the preset tilt angle, a transverse H-shaped wedge steel beam is welded at each end of the first flange plate along the preset tilt angle. A longitudinal H-beam is fixedly connected to one end of each supporting web away from the H-beam column through the bolt holes. The two flanges of each longitudinal H-beam are welded to the first flange plate and the second flange plate on the same side, respectively.

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