A door-shaped anti-seismic support

Abstract

This utility model discloses a portal-shaped seismic brace, relating to the field of seismic bracing technology. It includes vertical W-shaped steel, U-shaped W-shaped steel, inner connectors, outer connectors, and bolt assemblies. Two vertical W-shaped steels are symmetrically arranged, and the U-shaped W-shaped steel and the two vertical W-shaped steels together form a portal structure. The inner and outer connectors are located on the inner and outer sides of the connection between the vertical W-shaped steel and the U-shaped W-shaped steel, respectively. The vertical W-shaped steel, inner connectors, and outer connectors are connected by at least two bolt assemblies. The inner and outer connectors clamp the central web and inclined web of the vertical W-shaped steel and the U-shaped W-shaped steel from both sides, forming a double-layer clamping structure. Combined with multi-point fixing by the bolt assemblies, this effectively prevents loosening and angular displacement of the connection points, improving the stability of the seismic brace. The central web, inner web, and outer web are all provided with pentagonal combination holes with multiple locking positions, allowing flexible adjustment of the docking position between the vertical and U-shaped steels to adapt to site height and spacing deviations.

Description

Technical Field

[0001] This utility model relates to the field of seismic bracing technology, and in particular to a portal-shaped seismic bracing. Background Technology

[0002] In building electromechanical engineering, the seismic support for multiple parallel pipelines, such as air conditioning water system pipelines, power cable trays, or large equipment such as fan coil units and water pumps, needs to have a ring-shaped load-bearing capacity. Traditional portal seismic supports are mostly formed by welding vertical steel and horizontal steel, or fixed by ordinary bolts.

[0003] The fixed dimensions of the welded portal seismic bracing cannot accommodate the height deviation of pipelines on site. If adjustments are needed, the bracing must be recut and re-welded, resulting in extremely poor construction flexibility. Furthermore, the welding process is prone to stress concentration, which can damage the strength of the steel structure and reduce its seismic performance.

[0004] Ordinary bolt-connected portal seismic bracing, such as the patent with announcement number CN220016333U and name "A Comprehensive Lateral Seismic Bracing Hanger", uses pre-set fixing holes. In order to ensure structural strength, the fixing holes are set at large intervals. The connection position of the vertical and horizontal steel sections cannot be finely adjusted. If there is a deviation in the installation position on site, additional holes need to be drilled to adapt, which not only increases construction costs but also weakens the load-bearing capacity of the steel sections. Utility Model Content

[0005] To address the technical problems of existing portal seismic bracing structures that cannot be finely adjusted and require additional drilling for installation deviations, this utility model provides a portal seismic bracing that achieves stable circumferential support and flexible installation through a portal-shaped combination of vertical W-shaped steel and U-shaped W-shaped steel, clamping of inner and outer connecting parts, and fine adjustment of five-pointed star combination holes.

[0006] To achieve the above objectives, this utility model provides a portal-shaped seismic brace, comprising a vertical W-shaped steel section, a U-shaped W-shaped steel section, an inner connector, an outer connector, a bolt assembly, and an optional top-mounted base. Two vertical W-shaped steel sections are symmetrically arranged, and the U-shaped W-shaped steel section is located at the bottom of the vertical W-shaped steel section, together forming a portal-shaped surrounding structure. The inner connector and the outer connector are located on the inner and outer sides of the connection between the vertical W-shaped steel section and the U-shaped W-shaped steel section, respectively, forming a clamping and fixing mechanism. The vertical W-shaped steel section, the U-shaped W-shaped steel section, the inner connector, and the outer connector are detachably connected by at least two bolt assemblies. The top-mounted base is used for fixing the top of the portal-shaped structure and is adapted to connect with the vertical W-shaped steel section.

[0007] Both vertical W-shaped steel and U-shaped W-shaped steel have a W-shaped cross-section, consistent structure, and are interchangeable. They both include a central web, inclined web, steel flanges, arc transition section, and end connecting plate. The inclined webs are symmetrically distributed on both sides of the central web, and the steel flanges are symmetrically distributed on both sides of the central web and located on the side of the inclined webs away from the central web. The inclined webs are sandwiched between the central webs and the steel flanges to form a W-shaped cross-section anti-bending structure. The end connecting plate is vertically fixed to the side of the steel flange away from the inclined web to enhance the strength of the steel end and prevent flange deformation during connection; The arc transition section is located at the connection between the central web and the inclined web, the inclined web and the steel flange, and the steel flange and the end connecting plate to disperse stress concentration and prevent cracking. Both vertical W-shaped steel and U-shaped W-shaped steel have multiple five-pointed star combination holes spaced along the length on the central web plate, with consistent hole spacing, providing a range of options for fine-tuning the connection position and adapting the length.

[0008] The U-shaped and W-shaped steel sections serve as the lateral load-bearing core of the portal structure, comprising a horizontal section and vertical sections symmetrically positioned on both sides of the horizontal section. The vertical segments are set perpendicular to the horizontal segments, forming a U-shaped outline; The vertical section is set parallel to the vertical W-shaped steel, and their vertical projections completely overlap to ensure that the center lines are aligned when docking, and the portal structure is upright and without offset. The central web of the vertical section is aligned with the central web of the vertical W-shaped steel, which facilitates the clamping and connection of the inner and outer connecting parts.

[0009] The inner and outer connectors are used to achieve a stable connection between the vertical W-shaped steel and the U-shaped W-shaped steel, forming a clamping and fixing mechanism. The inner connecting component includes an inner web plate and inner flanges symmetrically fixed on both sides of the inner web plate; the outer wall of the inner web plate is tightly fitted with the inner wall of the central web plate of the vertical W-shaped steel and the U-shaped W-shaped steel, covering the mating area of ​​the two; the outer wall of the inner flange is tightly fitted with the inner wall of the inclined web plate of the two, forming an inner clamping limit; a five-pointed star combination hole with the same spacing as the hole in the central web plate is opened on the inner web plate to ensure the bolts can be inserted; The outer connecting member includes an outer web plate and outer flanges symmetrically fixed on both sides of the outer web plate; the inner wall of the outer web plate is tightly fitted with the outer wall of the central web plate of the vertical W-shaped steel and U-shaped W-shaped steel, and together with the inner connecting member, clamps the central web plate; the inner wall of the outer flange is tightly fitted with the outer wall of the inclined web plate of the two, and together with the inner flange, clamps the inclined web plate, forming an outer clamping limit; a five-pointed star combination hole with the same spacing as the hole of the central web plate is opened on the outer web plate to ensure hole alignment.

[0010] The five-pointed star combination hole consists of two side five-pointed star holes and a serrated connecting hole; the serrated connecting hole is located between the two side five-pointed star holes and partially overlaps to form a continuous channel; the serrated connecting hole has at least one set of symmetrical V-grooves with an included angle of 108 degrees, which is adapted to the five-pointed star part of the bolt; both the side five-pointed star holes and the V-grooves form snap-fit ​​holes, providing at least two fine-tuning positions; The bolt assembly includes a bolt and a nut; the bolt is coaxially connected to the threaded shank, the pentagonal star, and the threaded head in sequence; the pentagonal star has a pentagonal cross-section, which is adapted to the snap-fit ​​hole position to prevent rotation and loosening; the diameter of the threaded shank is smaller than the width of the narrowest part of the serrated connecting hole, which can be finely adjusted along the channel; after the threaded shank passes through the pentagonal combination hole of the outer connector, the core steel, and the inner connector in sequence, it is threadedly connected to the nut to achieve fixation.

[0011] The top-mounted base is used to fix the top of a portal frame structure to the base, such as a top concrete beam or steel structural beam, enhancing the overall resistance to tipping. The top-mounted base includes a vertical mounting plate, a horizontal mounting plate, and end bending plates; the vertical mounting plate is vertically fixed to the horizontal mounting plate. The inner wall of the vertical mounting plate abuts against the outer wall of the steel flange of the vertical W-shaped steel, and the vertical mounting plate is provided with a five-pointed star combination hole to facilitate alignment with the hole position of the vertical W-shaped steel, and is connected by bolt assembly; The horizontal mounting plate has mounting holes, which are round holes, adapted to expansion bolts, for fixing to the top base; The end bending plates are symmetrically arranged on both sides of the vertical mounting plate. Their inner walls are fitted with the outer walls of the end connecting plates of the vertical W-shaped steel to form a lateral limit and prevent the vertical W-shaped steel from shifting.

[0012] Compared with existing technologies, this technical solution has at least one of the following beneficial effects: 1. The portal structure formed by the vertical W-shaped steel and the U-shaped W-shaped steel clamps the central web and inclined web of the vertical W-shaped steel and the U-shaped W-shaped steel from both sides through the inner and outer connectors, forming a double-layer clamping structure. With the multi-point fixing of the bolt assembly, it effectively prevents the connection parts from loosening and the angle from shifting, and improves the stability of the seismic support. 2. The multi-clamping hole position of the five-pointed star combination hole can flexibly adjust the vertical docking position with the U-shaped steel to adapt to the site height and spacing deviation, without the need for additional drilling, thus avoiding structural damage; assembly does not require precise alignment, which can shorten the construction time. Attached Figure Description

[0013] Figure 1 This is a perspective view of a portal-shaped seismic brace according to an embodiment of the present invention; Figure 2 This is an exploded view of a portal-shaped seismic brace according to an embodiment of the present invention; Figure 3 This is a front view of a portal-shaped seismic brace according to an embodiment of the present invention; Figure 4 for Figure 3 A cross-sectional view along line BB, and a structural schematic diagram of a portal-shaped seismic brace according to an embodiment of this utility model; Figure 5 for Figure 2 A magnified view of a section at point A in the middle; Figure 6 for Figure 4 A magnified view of a section at point C; In the diagram, 1. Vertical W-shaped steel; 11. Central web plate; 12. Sloping web plate; 13. Steel flange; 14. Arc transition section; 15. End connecting plate; 2. Inner connector; 21. Inner web plate; 22. Inner flange; 3. Bolt assembly; 31. Bolt; 311. Threaded part; 312. Pentagonal part; 313. Threaded head; 32. Nut; 4. U-shaped W-shaped steel; 5. Outer connector; 51. Outer web plate; 52. Outer flange; 6. Pentagonal combination hole; 61. Side pentagonal hole; 62. Serrated connecting hole; 621. V-groove; 7. Top mounting base; 71. Vertical mounting plate; 72. Horizontal mounting plate; 721. Mounting hole; 73. End bending plate. Detailed Implementation

[0014] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0015] Please see Figures 1 to 6 This application provides a portal-shaped seismic bracing system, including a vertical W-shaped steel 1, a U-shaped W-shaped steel 4, an inner connector 2, an outer connector 5, and a bolt assembly 3.

[0016] Two vertical W-shaped steel sections 1 are symmetrically arranged along the vertical direction; U-shaped W-shaped steel sections 4 are located at the bottom of the two vertical W-shaped steel sections 1. The three together form a closed gate-shaped surrounding structure for wrapping pipelines or equipment.

[0017] Both the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4 have W-shaped cross sections and include a central web 11, a diagonal web 12, steel flanges 13, and end connecting plates 15.

[0018] The inclined web 12 is symmetrically distributed on both sides of the central web 11, and the steel flange 13 is located on the side of the inclined web 12 away from the central web 11. The inclined web 12 is sandwiched between the central web 11 and the steel flange 13.

[0019] The end connecting plate 15 is vertically fixed to the side of the steel flange 13 of the vertical W-shaped steel 1 and U-shaped W-shaped steel 4 away from the inclined web 12, and extends along the length of the steel section. The end connecting plate 15 can enhance the end strength of the steel flange 13 and prevent the flange from bending due to stress concentration during connection.

[0020] The inner connecting member 2 is located on the inner side of the connection between the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4. The inner connecting member 2 includes an inner web plate 21 and inner flanges 22 located on both sides of the inner web plate 21. The outer wall of the inner web plate 21 is in contact with the inner wall of the central web plate 11 of the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4. The inner flanges 22 are in contact with the inner wall of the inclined web plate 12 of the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4. The outer connecting member 5 is located on the outside of the connection between the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4. The outer connecting member 5 includes an outer web plate 51 and outer flanges 52 located on both sides of the outer web plate 51. The inner wall of the outer web plate 51 contacts and engages with the outer wall of the central web plate 11 of the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4. The outer flanges 52 contact and engage with the outer wall of the inclined web plate 12 of the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4. Five-pointed star combination holes 6 are provided on the central web plate 11, the inner web plate 21, and the outer web plate 51.

[0021] The bolt assembly 3 includes a bolt 31 and a nut 32. The bolt 31 consists of a threaded shank 311, a pentagonal star-shaped portion 312, and a threaded head 313. The threaded shank 311 passes through the pentagonal star-shaped combination hole 6 and is threadedly connected to the nut 32. The pentagonal star-shaped combination hole 6 contains four locking holes that can engage with the pentagonal star-shaped portion 312. The pentagonal star-shaped portion 312 has a pentagonal cross-section with an interior angle of 108 degrees, which matches the locking holes of the pentagonal star-shaped combination hole 6.

[0022] The basic gate-shaped surrounding structure is formed by vertical W-shaped steel 1 and U-shaped W-shaped steel 4, which can be adapted to the external protection of single or multiple rows of pipelines; the contact and cooperation between the inner and outer connectors achieves initial positioning, and the multi-clamping hole of the pentagonal combination hole can finely adjust the connection position, avoiding additional drilling and meeting the needs of conventional seismic scenarios.

[0023] In some embodiments, please refer to Figures 1 to 3 A top mounting base 7 can also be added, which includes a vertical mounting plate 71, a horizontal mounting plate 72 and an end bending plate 73; the vertical mounting plate 71 is fixed vertically to the horizontal mounting plate 72. The inner wall of the vertical mounting plate 71 abuts against the outer wall of the steel flange 13 of the vertical W-shaped steel 1. The vertical mounting plate 71 is provided with a five-pointed star combination hole 6. The top mounting base 7 is connected to the vertical W-shaped steel 1 by bolt assembly 3. The horizontal mounting plate 72 has mounting holes 721 for inserting fasteners, such as expansion bolts, to connect to the top substrate, such as a concrete beam. The end bending plates 73 are symmetrically arranged on both sides of the vertical mounting plate 71, and their inner walls are respectively attached to the outer walls of the end connecting plates 15 of the vertical W-shaped steel 1 to form a lateral limiting structure.

[0024] The top-mounted base 7 enables bidirectional fixation of the seismic bracing of the portal structure, significantly improving its anti-tipping ability. The five-pointed star combination holes of the top-mounted base can be finely adjusted to fix the position according to the vertical W-shaped steel 1, adapting to the deviation of the top base and preventing the portal structure from tipping over due to lateral forces.

[0025] In some embodiments, please refer to Figures 1 to 6 To ensure that stress is evenly transmitted along the mating surface, the outer wall of the inner web plate 21 of the inner connector 2 is tightly fitted without gaps to the inner wall of the central web plate 11 of the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4, and the inner flange 22 is tightly fitted to the inner wall of the inclined web plate 12 of both. The inner wall of the outer web plate 51 of the outer connector 5 is tightly fitted to the outer wall of the central web plate 11 of the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4, and the outer flange 52 is tightly fitted to the outer wall of the inclined web plate 12 of both.

[0026] The tight fit design ensures that stress is evenly distributed along the mating surface, avoiding localized stress concentration; at the same time, it enhances the friction between the inner connector 2, the outer connector 5 and the vertical W-shaped steel 1, and the U-shaped W-shaped steel 4 and the steel profile, preventing relative sliding under vibration loads and improving connection stability and load-bearing capacity.

[0027] In some embodiments, please refer to Figure 5 The five-pointed star combination hole 6 is composed of two side five-pointed star holes 61 and one serrated connecting hole 62; the serrated connecting hole 62 is located between the two side five-pointed star holes 61 and partially overlaps with the two side five-pointed star holes 61 to form a continuous channel. The sawtooth connecting hole 62 is provided with two sets of symmetrically arranged V-shaped grooves 621; the side pentagonal hole 61 and any set of symmetrical V-shaped grooves 621 each independently form a snap-fit ​​hole position, that is, the pentagonal combination hole 6 has 4 snap-fit ​​holes.

[0028] Furthermore, the included angle of the V-groove 621 is 108 degrees, which is compatible with the pentagonal part 312 of the bolt 31. When snapping, ensure that the edges of the pentagonal part 312 fit against the side of the V-groove 621 to avoid loosening of the snap-fit ​​due to angular deviation.

[0029] Based on the site deviation, move the screw part 311 of the bolt assembly 3 along the sawtooth connection hole 62, select the appropriate snap-fit ​​hole position, that is, the side pentagonal hole 61 or V-groove, and rotate the bolt 31 to snap and fix the pentagonal part 312 with the hole position.

[0030] The continuous channel and multi-clamping hole design allows for multi-position fine-tuning of the connection position to accommodate smaller installation deviations; the overlapping structure of the serrated connecting hole 62 and the side pentagonal hole 61 ensures smooth movement of the screw section.

[0031] In some embodiments, please refer to Figure 6An arc transition section 14 is provided between the central web plate 11 and the inclined web plate 12, between the inclined web plate 12 and the steel flange 13, and between the steel flange 13 and the end connecting plate 15. The transition surface is a smooth arc.

[0032] The arc transition section 14 is a one-piece molded structure, and the arc radius is made uniform and without sharp edges during processing.

[0033] The arc transition section 14 disperses stress concentration at various connection points, preventing cracking at sharp corners when the seismic bracing is subjected to gravity or seismic loads; it also reduces residual stress during steel processing, improves overall fatigue resistance, and extends service life.

[0034] In some embodiments, please refer to Figures 1 to 4 On the central web plate 11 of the vertical W-shaped steel 1 and the U-shaped W-shaped steel 4, a plurality of pentagram combination holes 6 are spaced apart along their length, with the spacing between two adjacent pentagram combination holes 6 being the same.

[0035] The corresponding five-pointed star combination hole 6 can be selected for connection according to the preset height and width of the gate structure, without the need for additional drilling.

[0036] The porous, spaced distribution allows for flexible adjustment of the height and width of the portal structure, adapting to pipelines or equipment of different sizes; it eliminates the need to customize steel profiles of different lengths, improving product versatility and reducing inventory costs.

[0037] In some embodiments, please refer to Figures 1 to 6 The U-shaped W-shaped steel 4 includes a horizontal section 41 and vertical sections 42 symmetrically located at both ends of the horizontal section 41; the vertical sections 42 are fixed vertically to the horizontal section 41 to form a U-shaped structure. The vertical section 42 is set parallel to the vertical W-shaped steel 1, and the vertical projection of the vertical section 42 in the vertical direction completely coincides with the vertical projection of the vertical W-shaped steel 1. During installation, ensure that the vertical section 42 of the U-shaped W-shaped steel 4 is aligned with the center line of the vertical W-shaped steel 1, and that their vertical projections coincide, to avoid skewing of the portal structure.

[0038] The parallel and projected overlap design of the vertical section 42 and the vertical W-shaped steel 1 ensures that the forces on the left and right sides of the portal structure are symmetrical, avoiding deformation caused by uneven forces on one side; it ensures that the portal structure is upright, pipelines or equipment can be placed in the center, the forces are balanced, and the overall seismic protection effect is improved.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0042] 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 at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A portal-shaped seismic bracing system, characterized in that, It includes vertical W-shaped steel, U-shaped W-shaped steel, inner connectors, outer connectors, and bolt assemblies. Two vertical W-shaped steels are symmetrically arranged. The U-shaped W-shaped steel and the two vertical W-shaped steels together form a gate-shaped structure. The inner connectors and outer connectors are located on the inner and outer sides of the connection between the vertical W-shaped steel and the U-shaped W-shaped steel, respectively. The vertical W-shaped steel, inner connectors, and outer connectors are connected by at least two bolt assemblies. Both the W-shaped steel and the U-shaped W-shaped steel have W-shaped cross sections. Both the W-shaped steel and the U-shaped W-shaped steel include a central web, an inclined web, and steel flanges. The inclined web is located on both sides of the central web, the steel flange is located on both sides of the central web, and the inclined web is located between the steel flange and the central web. The inner connecting member includes an inner web and inner flanges located on both sides of the inner web; the outer wall of the inner web contacts and engages with the inner wall of the central web, and the inner flanges contact and engage with the inner wall of the oblique web. The external connector includes an outer web and outer flanges located on both sides of the outer web; the inner wall of the outer web contacts and engages with the outer wall of the central web, and the outer flanges contact and engage with the outer wall of the oblique web. Five-pointed star combination holes are provided on the central web, inner web, and outer web; The bolt assembly includes a bolt and a nut. The bolt includes a threaded portion, a pentagonal portion, and a threaded head. The threaded portion passes through the pentagonal assembly hole and is threadedly connected to the nut. The pentagonal combination hole includes at least two snap-fit ​​holes that can engage with the pentagonal part.

2. The portal-shaped seismic brace according to claim 1, characterized in that, The outer wall of the inner web plate is attached to the inner wall of the central web plate, and the inner flange is attached to the inner wall of the oblique web plate; the inner wall of the outer web plate is attached to the outer wall of the central web plate, and the outer flange is attached to the outer wall of the oblique web plate.

3. The portal-shaped seismic brace according to claim 1, characterized in that, The pentagonal combination hole consists of two side pentagonal holes and a serrated connecting hole located between the two side pentagonal holes. The serrated connecting hole partially overlaps with the two side pentagonal holes. The serrated connecting hole includes at least one set of symmetrically arranged V-shaped grooves. The side pentagonal holes and any set of symmetrically arranged V-shaped grooves form a snap-fit ​​hole.

4. The portal-shaped seismic brace according to claim 3, characterized in that, The included angle of the V-shaped groove is 108 degrees.

5. The portal-shaped seismic brace according to claim 1, characterized in that, Both the W-shaped steel and the U-shaped W-shaped steel also include end connecting plates, which are located on the side of the steel flange away from the inclined web.

6. The portal-shaped seismic brace according to claim 5, characterized in that, It also includes a top mounting base, which includes a vertical mounting plate, a horizontal mounting plate, and end bending plates. The vertical mounting plate is perpendicular to the horizontal mounting plate and abuts against the flange of the steel section. The horizontal mounting plate has mounting holes. The end bending plates are located on both sides of the vertical mounting plate. The inner walls of the two end bending plates are respectively attached to the outer walls of the two end connecting plates to form a limiting structure. The vertical mounting plate also has a five-pointed star combination hole. The vertical mounting plate and the vertical W-shaped steel section are also connected by bolt assemblies.

7. The portal-shaped seismic brace according to claim 5, characterized in that, A circular arc transition section is provided between the central web plate and the inclined web plate, between the inclined web plate and the steel flange, and between the steel flange and the end connecting plate.

8. The portal-shaped seismic bracing according to claim 1, characterized in that, Both the W-shaped steel and the U-shaped W-shaped steel have multiple pentagonal combination holes on their central web plates, which are spaced apart along the length of the central web plate.

9. The portal-shaped seismic bracing according to claim 1, characterized in that, The cross-section of the pentagonal part is pentagonal in shape.

10. The portal-shaped seismic bracing according to claim 1, characterized in that, The U-shaped W-shaped steel includes a horizontal section and vertical sections located on both sides of the horizontal section. The vertical sections are set perpendicular to the horizontal section, and the vertical projection of the vertical sections coincides with that of the vertical W-shaped steel.

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