Herringbone support steel frame

Abstract

The utility model relates to a herringbone support steel frame. The method is suitable for the technical field of building structure engineering. According to the technical scheme, the steel frame comprises a steel frame body which comprises a steel beam, steel columns and steel supports, the steel columns are perpendicularly connected to the two ends of the steel beam, and the steel supports which are symmetrically arranged are obliquely connected between the middle bottom of the steel beam and the bottoms of the inner sides of the steel columns; a first joint close to the symmetric center line of the steel beam and a second joint far away from the symmetric center line of the steel beam are respectively formed between the two sides of the steel support and the bottom of the steel beam through the steel support flange plates; the inclined stiffening plate structures are arranged in the middle of the steel beam in an inclined mode, the arrangement positions of the inclined stiffening plate structures correspond to the first connecting positions, the inclined stiffening plate structures are symmetrically arranged about the symmetrical center line of the steel beam, and the included angle opening direction of the inclined stiffening plate structures is consistent with the included angle opening direction of the steel support; and the vertical stiffening plate structures are arranged in the middle of the steel beam and are vertically arranged, the arrangement positions correspond to the second connecting positions, and the vertical stiffening plate structures are symmetrically arranged about the symmetric center line of the steel beam.

Description

Technical Field

[0001] This utility model relates to the field of building structure engineering technology, and in particular to a herringbone steel frame. Background Technology

[0002] Steel frame structures are widely used in multi-story and high-rise buildings due to their advantages such as convenient construction and high space utilization. Frame structures are a basic form of steel structure. The A-frame bracing system within the frame forms a dual lateral force resisting system, significantly improving the structure's lateral and seismic performance. However, under lateral loads, the compression bracing of the A-frame will buckle first, losing some of its load-bearing capacity, while the tension bracing can continue to bear the load. This generates vertical unbalanced forces on the beams, prematurely causing structural failure.

[0003] Therefore, in order to ensure a clear force transmission path for the steel frame-A-frame during loading, it is necessary to provide an A-frame steel frame to strengthen the steel beams and improve their shear strength. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a herringbone steel frame to address the above-mentioned problems.

[0005] The technical solution adopted in this utility model is: a herringbone steel frame, comprising:

[0006] The main body of the steel frame includes steel beams, steel columns and steel supports. The two ends of the steel beams are vertically connected to the steel columns. The bottom of the steel beams and the bottom of the inner side of the steel columns are obliquely connected by symmetrically arranged steel supports. The two sides of the steel supports are connected to the bottom of the steel beams via the flange plates of the steel supports, forming a first connection point close to the center line of the steel beams and a second connection point far away from the center line of the steel beams.

[0007] The inclined stiffening plate structure is located in the middle of the steel beam and is set at an angle. Its position corresponds to the first connection point and is arranged symmetrically about the center line of the steel beam. The opening direction of the angle of the inclined stiffening plate structure is consistent with the opening direction of the angle of the steel support.

[0008] The vertical stiffening plate structure is located in the middle of the steel beam, arranged vertically, and its position corresponds to the second connection point. It is also symmetrical about the center line of the steel beam.

[0009] By employing the aforementioned technical methods, diagonal and vertical stiffening plate structures are added to the steel beam. The vertical stiffening plate structure corresponds to the outer flange of the steel support, enhancing the steel beam's ability to resist vertical unbalanced forces caused by the difference in bearing capacity between tension and compression bracing. The diagonal stiffening plate structure corresponds to the inner flange of the steel support, dispersing the forces transmitted from the steel support to the steel beam. The combination of the vertical and diagonal stiffening plate structures strengthens the steel beam, thereby improving its shear resistance.

[0010] In some embodiments, the inclined stiffening plate structure includes multiple inclined stiffening plates, and the steel beam flange plates on both sides of the steel beam include a top flange plate and a bottom flange plate. The inclined stiffening plates are inclinedly disposed on both sides of the steel beam web plate. The tops of the inclined stiffening plates located on both sides of the symmetrical center line of the steel beam are connected, and the tops of the inclined stiffening plates are connected to the top flange plate of the steel beam. The bottoms of the inclined stiffening plates are connected to the bottom flange plate of the steel beam. The bottom position of the inclined stiffening plates corresponds to the first connection point, so that the inclined stiffening plates on either side of the steel beam web plate of the steel beam have a triangular structure.

[0011] In some embodiments, the vertical stiffening plate structure includes a plurality of vertical stiffening plates, which are vertically disposed on both sides of the web of the steel beam, and the top and bottom of the vertical stiffening plates are respectively connected to the top flange plate and the bottom flange plate of the steel beam.

[0012] In some embodiments, the steel support flange includes an inner flange near the mid-span and an outer flange away from the mid-span. Both sides of the steel support are provided with stiffening ribs. The stiffening ribs are located at the ends of the steel support near the steel beam and are arranged on both sides of the web of the steel support. The two ends of the stiffening ribs are perpendicularly connected to the inner flange and the outer flange of the steel support, respectively, and the connection between the end of the stiffening rib and the outer flange of the steel support corresponds to the second connection.

[0013] The beneficial effects of this utility model are:

[0014] 1. By incorporating diagonal and vertical stiffening plate structures into steel beams, the stiffness of the beams can be increased, thereby enhancing their resistance to shear and lateral forces. For diagonal stiffening plate structures, the angled opening direction aligns with the steel bracing, effectively dispersing the forces transmitted from the bracing to the beam, resulting in a more uniform stress and strain distribution, reducing localized stress concentrations, and helping to delay or prevent overall structural failure due to localized instability. For vertical stiffening plate structures, the beam's resistance to external unbalanced forces is enhanced, improving its overall stability. Therefore, in the event of buckling of the bracing, the impact of the resulting vertical unbalanced forces on the beam is effectively mitigated, reducing the risk of structural failure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this application.

[0016] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 yes Figure 2 Cross-sectional view along the AA direction.

[0018] Figure 4 yes Figure 2 Cross-sectional view along the BB direction.

[0019] Figure 5 yes Figure 2 Cross-sectional view along the CC direction.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Steel column; 2. Steel beam; 3. Steel brace; 21. Steel beam flange plate; 22. Steel beam web plate; 31. Steel brace flange plate; 32. Steel brace web plate; 41. Diagonal stiffening plate; 42. Vertical stiffening plate; 43. Stiffening rib plate; 51. First connection; 52. Second connection.

[0022] This specification includes references to "one embodiment" or "implementation". The use of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. Specific features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.

[0023] The term "comprising" is open-ended. As used in the appended claims, it does not exclude additional structures or steps.

[0024] "First," "second," etc. As used in this article, these terms serve as labels for the nouns preceding them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0026] Combination Figures 1 to 5As shown, this embodiment is a herringbone steel frame, including a main steel frame body, diagonal stiffening plate structures, and vertical stiffening plate structures. The main steel frame body includes steel beams 2, steel columns 1, and steel supports 3. Steel columns 1 are vertically connected to both ends of the steel beams 2. Symmetrically arranged steel supports 3 are diagonally connected between the bottom middle of the steel beams 2 and the bottom inner side of the steel columns 1, forming a herringbone structure. A first connection 51, close to the center line of symmetry of the steel beams 2, and a second connection 52, away from the center line of symmetry of the steel beams 2, are formed between the flanges of the steel supports 3 and the bottom of the steel beams 2. The diagonal stiffening plate structures are located in the middle of the steel beams 2, and are diagonally arranged. The position of the diagonal stiffening plate structures corresponds to the first connection 51 and is symmetrically arranged about the center line of symmetry of the steel beams 2. The opening direction of the angle of the diagonal stiffening plate structures is consistent with the opening direction of the angle of the steel supports 3. The vertical stiffening plate structure is located in the middle of the steel beam 2. The vertical stiffening plate structure is arranged vertically and its position corresponds to the second connection 52. It is also symmetrically arranged about the center line of the steel beam 2, so that the diagonal stiffening plate structure can transfer the internal force of the steel support 3 near the mid-span flange to the steel beam 2, and the vertical stiffening plate structure can transfer the internal force of the steel support 3 away from the mid-span flange to the steel beam 2.

[0027] In some implementations, the steel beam 2, steel column 1, and steel support 3 in this embodiment are all composed of hot-rolled or welded flange plates and web plates. In this embodiment, the steel beam 2, steel column 1, and steel support 3 all have an H-shaped cross-section, which can be prefabricated in a factory or welded.

[0028] In some embodiments, the diagonal stiffening plate structure includes multiple diagonal stiffening plates 41. The steel beam flange plates 21 on both sides of the steel beam include a top flange plate and a bottom flange plate. The top flange plate is located at the top of the steel beam web 22, and the bottom flange plate is located at the bottom of the steel beam web 22. The diagonal stiffening plates 41 are inclined on both sides of the steel beam web 22 of the steel beam 2. The tops of the diagonal stiffening plates 41 located on both sides of the symmetrical center line of the steel beam 2 are connected, and the tops of the diagonal stiffening plates 41 are connected to the top flange plate 21. The bottoms of the diagonal stiffening plates 41 are connected to the bottom flange plate 21. The bottom position of the diagonal stiffening plates 41 corresponds to the first connection point 51, so that the diagonal stiffening plates 41 on either side of the web 22 of the steel beam 2 have a triangular structure.

[0029] By arranging the inclined stiffening plate 41 at a certain angle, with the opening angle of the inclined stiffening plate 41 being consistent with the opening angle of the steel support 3, the force transmitted from the A-frame brace to the steel beam 2 can be effectively dispersed, reducing stress concentration and increasing the overall stability and rigidity of the structure.

[0030] In some embodiments, the vertical stiffening plate structure includes multiple vertical stiffening plates 42, which are vertically arranged on both sides of the web 22 of the steel beam 2. The top and bottom of the vertical stiffening plates 42 are respectively connected to the top flange plate and bottom flange plate of the steel beam 2, and the bottom of the vertical stiffening plates 42 corresponds to the second connection 52.

[0031] By vertically arranging vertical stiffening plates 42 on both sides of the middle of the steel beam 2, the vertical stiffening plates 42 help to enhance the steel beam 2's ability to resist vertical unbalanced forces caused by tension and compression, thereby improving the overall stability of the steel beam 2.

[0032] In some embodiments, the steel support flange includes an inner flange near the mid-span and an outer flange away from the mid-span. Both sides of the steel support 3 are provided with stiffening ribs 43. The stiffening ribs 43 are located at the ends of the steel support 3 near the steel beam 2. The stiffening ribs 43 are arranged on both sides of the web 32 of the steel support 3. The two ends of the stiffening ribs 43 are perpendicularly connected to the inner flange and the outer flange of the steel support 3, respectively. The connection between the end of the stiffening ribs 43 and the outer flange of the steel support 3 corresponds to the second connection 52.

[0033] By adding stiffening ribs 43 at the ends of the steel support 3, the stiffness and load-bearing capacity of the connection point between the steel support 3 and the steel beam 2 are further enhanced. This helps to transfer the internal forces on the inner and outer flanges of the steel support 3, avoids uneven stress distribution in the support section, and reduces the possibility of local failure.

[0034] The implementation principle of an A-frame steel frame is as follows:

[0035] By strategically arranging diagonal stiffening plates 41 and vertical stiffening plates 42 at the midpoint of steel beam 2, the local stiffness of steel beam 2 is increased, enhancing its resistance to shear and lateral forces. Due to the presence of diagonal and vertical stiffening plates 41 and 42, even if the bracing buckles, these stiffening plates can effectively disperse and resist the resulting unbalanced forces. By providing additional support, the risk of excessive direct damage to steel beam 2 is reduced, thereby enhancing the overall stability and seismic performance of the A-frame steel frame and reducing the risk of structural instability due to unilateral bracing failure.

[0036] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A herringbone steel frame, characterized in that, include: The main body of the steel frame includes steel beams (2), steel columns (1) and steel supports (3). The two ends of the steel beams (2) are vertically connected to the steel columns (1). The bottom of the middle of the steel beams (2) and the bottom of the inner side of the steel columns (1) are obliquely connected to the symmetrically arranged steel supports (3). The two sides of the steel supports (3) are connected to the bottom of the steel beams (2) via the steel support flanges (31) to form a first connection point (51) close to the center line of the symmetry of the steel beams (2) and a second connection point (52) far away from the center line of the symmetry of the steel beams (2). The inclined stiffening plate structure is located in the middle of the steel beam (2) and is arranged in an inclined manner. Its position corresponds to the first connection (51) and is arranged symmetrically about the center line of the steel beam (2). The angle opening direction of the inclined stiffening plate structure is consistent with the angle opening direction of the steel support (3). The vertical stiffening plate structure is located in the middle of the steel beam (2), arranged vertically, and its position corresponds to the second connection (52), and is arranged symmetrically about the center line of the steel beam (2).

2. The A-frame steel frame according to claim 1, characterized in that: The inclined stiffening plate structure includes multiple inclined stiffening plates (41). The steel beam flange plates (21) on both sides of the steel beam (2) include a top flange plate and a bottom flange plate. The inclined stiffening plates (41) are inclinedly arranged on both sides of the steel beam web plate (22) of the steel beam (2). The tops of the inclined stiffening plates (41) located on both sides of the symmetrical center line of the steel beam (2) are connected, and the top of the inclined stiffening plates (41) is connected to the top flange plate of the steel beam (2). The bottom of the inclined stiffening plates (41) is connected to the bottom flange plate of the steel beam (2). The bottom position of the inclined stiffening plates (41) corresponds to the first connection point (51), so that the inclined stiffening plates (41) on either side of the steel beam web plate (22) of the steel beam (2) are triangular in shape.

3. The A-frame steel frame according to claim 2, characterized in that: The vertical stiffening plate structure includes multiple vertical stiffening plates (42). The vertical stiffening plates (42) are vertically arranged on both sides of the web plate (22) of the steel beam (2). The top and bottom of the vertical stiffening plates (42) are respectively connected to the top flange plate and the bottom flange plate of the steel beam (2).

4. The A-frame steel frame according to claim 1, characterized in that: The steel support flange plate (31) includes an inner flange plate near the mid-span and an outer flange plate away from the mid-span. Both sides of the steel support (3) are provided with stiffening ribs (43). The stiffening ribs (43) are located at the ends of the steel support (3) near the steel beam (2). The stiffening ribs (43) are arranged on both sides of the steel support web plate (32) of the steel support (3). The two ends of the stiffening ribs (43) are perpendicularly connected to the inner flange plate (31) and the outer flange plate of the steel support (3), respectively. The connection between the end of the stiffening ribs (43) and the outer flange plate corresponds to the second connection point (52).

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