Anti-seismic buckling restrained brace structure

Abstract

The utility model relates to the field of building structures, in particular to an anti-seismic buckling restrained brace structure which comprises rectangular steel and a connecting assembly. Core plates are respectively arranged on two sides of the rectangular steel; the connecting assembly is used for connecting rectangular steel and a core plate and comprises a first connecting plate arranged on the core plate, two second connecting plates arranged at the two ends of the rectangular steel correspondingly, a plurality of fixing bolts penetrating through the first connecting plate and the second connecting plates, and hexagonal nuts in threaded connection to the fixing bolts. The first connecting plate and the second connecting plate are attached to each other, and the hexagon nut and the second connecting plate abut against each other. According to the anti-seismic supporting structure, the defect that the axial rigidity of the middle section is low when the structure yields due to the fact that the axial length of the supporting structure needing to be installed is too long can be overcome, and the anti-seismic supporting stability of the whole structure is improved.

Description

Technical Field

[0001] The utility model relates to the field of building structures, in particular to an anti-seismic buckling restraint support structure. Background Art

[0002] Buckling-restrained braced structures (BSRs) are a building system designed to improve lateral stiffness and energy dissipation during earthquakes. By incorporating buckling-restrained braces (BSRs) within a concrete or steel frame as lateral force-resisting components and primary energy dissipation elements, these structures yield before the main structure during an earthquake, thereby protecting the structure and minimizing damage.

[0003] Chinese Patent Publication No. CN215106207U discloses a lead-restrained brace structure and its supporting frame system. The structure comprises lead blocks, a core plate, mounting brackets mounted at both ends of the core plate along its length, and first and second restraining steel plates mounted on opposite sides of the core plate along its thickness. The core plate is provided with first lead holes extending through it, and second lead holes are provided on the first and second restraining steel plates corresponding to the first lead holes. The lead blocks are mounted within the first and second lead holes. This buckling-restrained brace structure exhibits strong energy dissipation and excellent seismic performance, thereby improving the seismic performance of the supporting frame and the building complex.

[0004] However, the above technical solution has the following shortcomings: the buckling restraint support structure is mainly assembled by assembling the restraint steel plate and the limit steel plate outward through the core core plate, but when the diagonal length of the frame is large, the axial stiffness of the buckling restraint support structure drops sharply when yielding occurs, resulting in a significant reduction in the lateral stiffness of the buckling restraint support frame structure, thereby reducing the seismic support effect of the buckling restraint support structure. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology and propose an anti-seismic buckling restraint support structure, which can avoid the disadvantage that the axial length of the required installation support structure is too long, resulting in low axial stiffness of the middle section when the structure yields, and improve the stability of the anti-seismic support of the overall structure.

[0006] The technical solution of the utility model is a seismic buckling restrained support structure, including rectangular steel and a connecting assembly; core core plates are provided on both sides of the rectangular steel; the connecting assembly is used to connect the rectangular steel and the core core plates, including a first connecting plate provided on the core core plates, two second connecting plates respectively provided on both ends of the rectangular steel, a plurality of fixing bolts provided through the first connecting plate and the second connecting plate, and a hexagonal nut threadedly connected to the fixing bolts, the first connecting plate and the second connecting plate fit together, and the hexagonal nut and the second connecting plate abut against each other.

[0007] Preferably, the first connecting plate and the second connecting plate are both provided with threaded holes for screwing in fixing bolts and distributed in a rectangular array.

[0008] Preferably, the connecting assembly further comprises four concave blocks distributed in a ring array, and the concave surfaces of the concave blocks respectively abut against the first connecting plate and the second connecting plate.

[0009] Preferably, a support assembly is provided on the core plate, and the support assembly includes two restraining steel plates distributed up and down on the core plate and a limiting steel plate provided on the restraining steel plates.

[0010] Preferably, two reinforcing protrusions are provided on the restraining steel plate, and the reinforcing protrusions abut against the core plate.

[0011] Preferably, the core plate and the constraint steel plate are respectively provided with a first mounting hole and a second mounting hole that are symmetrically distributed and have the same size, and the symmetrical center lines of the first mounting hole and the second mounting hole coincide. Two lead blocks are provided inside the core plate, and the lead blocks are located inside the first mounting hole and the second mounting hole. The two ends of the lead blocks are respectively fitted with the limiting steel plates and completely fill the first mounting hole and the second mounting hole.

[0012] Preferably, a plurality of positioning ridges are provided on the core plate to constrain the end faces of the steel plates to fit the positioning ridges.

[0013] Preferably, a reinforcement assembly is provided on the core plate, and the reinforcement assembly includes two first ribs distributed up and down and two second ribs distributed up and down, and the second ribs are provided on the first connecting plate.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] The utility model effectively reduces the length of the yield section of the supporting structure by connecting two core core plates with a rectangular steel of a rigid structure, avoiding the disadvantage of low axial stiffness of the mid-end of the supporting structure when the diagonal length of the frame is too long. At the same time, the connecting components provided in conjunction with the arrangement improve the strength of the connection between the core core plate and the rectangular steel, thereby improving the seismic performance of the buckling restraint supporting structure and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 is a structural diagram of the support assembly;

[0018] Figure 3 for Figure 2 Schematic diagram of the split structure;

[0019] Figure 4 for Figure 1A magnified schematic diagram of the structure at point A.

[0020] Figure markings: 1. Core plate; 2. Constraint steel plate; 3. Limiting steel plate; 4. Reinforced protrusion; 5. Positioning ridge; 6. Lead block; 7. First mounting hole; 8. Second mounting hole; 9. First rib; 10. Second rib; 11. First connecting plate; 12. Rectangular steel; 13. Second connecting plate; 14. Fixing bolt; 15. Concave block; 16. Threaded hole; 17. Hexagonal nut. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figures 1-4 As shown, the present embodiment proposes an anti-seismic buckling restrained bracing structure, which includes rectangular steel 12 and connection components; core plates 1 are provided on both sides of the rectangular steel 12 .

[0023] like Figure 1 、 Figure 2 and Figure 4 As shown, the connecting assembly is used to connect the rectangular steel 12 and the core core plate 1, including a first connecting plate 11 arranged on the core core plate 1, two second connecting plates 13 respectively arranged on both ends of the rectangular steel 12, a plurality of fixing bolts 14 arranged through the first connecting plate 11 and the second connecting plate 13, and a hexagonal nut 17 threadedly connected to the fixing bolt 14. The first connecting plate 11 and the second connecting plate 13 fit together, and the hexagonal nut 17 abuts against the second connecting plate 13. The first connecting plate 11 and the second connecting plate 13 are both provided with threaded holes 16 distributed in a rectangular array for the fixing bolts 14 to be screwed together.

[0024] The connecting assembly also includes four concave blocks 15 distributed in a circular array. The concave surfaces of the concave blocks 15 are respectively in contact with the first connecting plate 11 and the second connecting plate 13. When the concave blocks 15 are installed, the concave blocks 15 are continuously struck by a hammer so that they are sunk into the first connecting plate 11 and the second connecting plate 13, thereby greatly improving the stability of the connection between the first connecting plate 11 and the second connecting plate 13.

[0025] In this embodiment, by connecting two core core panels 1 with a rectangular steel 12 of a rigid structure, the length of the yield section of the supporting structure is effectively reduced, avoiding the disadvantage of low axial stiffness at the mid-end of the supporting structure when the diagonal length of the frame is too long. At the same time, the connecting components provided in conjunction with the arrangement improve the strength of the connection between the core core panel 1 and the rectangular steel connection 12, thereby improving the seismic performance of the buckling-restrained supporting structure and having good practicality.

[0026] Example 2

[0027] like Figure 2 and Figure 3As shown, this embodiment proposes an anti-seismic buckling restrained support structure. Compared with Example 1, in this embodiment, a support assembly is provided on the core core panel 1, and the support assembly includes two restraining steel plates 2 distributed up and down on the core core panel 1 and a limiting steel plate 3 provided on the restraining steel plate 2. Two reinforcing protrusions 4 are provided on the restraining steel plate 2, and the reinforcing protrusions 4 abut against the core core panel 1. The reinforcing protrusions 4 cover the side surfaces of the core core panel 1 to improve the tightness of the connection between the core core panel 1 and the restraining steel plate 2.

[0028] The core plate 1 and the constraint steel plate 2 are respectively provided with a first mounting hole 7 and a second mounting hole 8 that are symmetrically distributed and have the same size. The symmetrical center lines of the first mounting hole 7 and the second mounting hole 8 coincide. Two lead blocks 6 are provided inside the core plate 1. The lead blocks 6 are located inside the first mounting hole 7 and the second mounting hole 8. The two ends of the lead blocks 6 are respectively fitted with the limiting steel plate 3 and completely fill the first mounting hole 7 and the second mounting hole 8.

[0029] A plurality of positioning ridges 5 are provided on the core plate 1, and the end faces of the restraining steel plate 2 are fitted with the positioning ridges 5. The positioning ridges 5 serve as auxiliary installation. When the restraining steel plate 2 is fixedly welded, the two end faces of the restraining steel plate 2 are respectively abutted against the positioning ridges 5, that is, welding is performed, which not only plays a fixing role, but also ensures that the restraining steel plate 2 is located in the center of the core plate 1.

[0030] In this embodiment, when an earthquake causes the core panel 1 to undergo plastic deformation, a shear force will be generated on the lead block 6 located in the first mounting hole 7 and the second mounting hole 8, thereby causing the lead block 6 to undergo shear deformation, thereby further consuming the energy transmitted by the earthquake and improving the seismic performance of the structure.

[0031] Example 3

[0032] like Figure 2 As shown, this embodiment proposes an anti-seismic buckling restrained support structure. Compared with the first embodiment, in this embodiment, a reinforcement component is provided on the core core plate 1, and the reinforcement component includes two first ribs 9 distributed up and down and two second ribs 10 distributed up and down, and the second ribs 10 are provided on the first connecting plate 11.

[0033] In this embodiment, when the buckling restraint structure is installed, the core core panel 1 is welded and fixed to the node plate at the corner of the building, and then the first rib plate 9 is also welded to the node plate. The first rib plate 9 is used to improve the support strength of the end of the buckling restraint structure, and the second rib plate 10 is used to improve the strength of the connection between the first connecting plate 10 and the core core panel 1.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A seismic buckling restrained brace structure, characterized in that: include: A rectangular steel (12) with core plates (1) provided on both sides; A connecting assembly is used to connect a rectangular steel (12) and a core plate (1), comprising a first connecting plate (11) arranged on the core plate (1), two second connecting plates (13) respectively arranged on both ends of the rectangular steel (12), a plurality of fixing bolts (14) passing through the first connecting plate (11) and the second connecting plate (13), and a hexagonal nut (17) threadedly connected to the fixing bolts (14), wherein the first connecting plate (11) and the second connecting plate (13) are fitted to each other, and the hexagonal nut (17) and the second connecting plate (13) are in contact with each other.

2. The seismic buckling restrained brace structure according to claim 1, characterized in that: The first connecting plate (11) and the second connecting plate (13) are both provided with threaded holes (16) for screwing the fixing bolts (14) and distributed in a rectangular array.

3. The seismic buckling restrained brace structure according to claim 1, characterized in that: The connecting assembly further comprises four concave blocks (15) distributed in a ring array, and the concave surfaces of the concave blocks (15) respectively abut against the first connecting plate (11) and the second connecting plate (13).

4. The seismic buckling restrained brace structure according to claim 1, characterized in that: A support assembly is provided on the core plate (1), and the support assembly comprises two restraining steel plates (2) distributed up and down on the core plate (1) and a limiting steel plate (3) provided on the restraining steel plates (2).

5. The seismic buckling restrained brace structure according to claim 4, characterized in that: Two reinforcing protrusions (4) are provided on the restraining steel plate (2), and the reinforcing protrusions (4) and the core plate (1) are in contact with each other.

6. The seismic buckling restrained brace structure according to claim 4, characterized in that: A first mounting hole (7) and a second mounting hole (8) that are symmetrically distributed and have the same size are respectively provided on the core plate (1) and the restraining steel plate (2), and the symmetrical center lines of the first mounting hole (7) and the second mounting hole (8) coincide with each other. Two lead blocks (6) are provided inside the core plate (1), and the lead blocks (6) are located inside the first mounting hole (7) and the second mounting hole (8). Both ends of the lead blocks (6) are respectively fitted with the limiting steel plate (3) and completely fill the first mounting hole (7) and the second mounting hole (8).

7. The seismic buckling restrained brace structure according to claim 4, characterized in that: A plurality of positioning ridges (5) are provided on the core plate (1), and the end faces of the constrained steel plates (2) are fitted with the positioning ridges (5).

8. The seismic buckling restrained brace structure according to claim 1, characterized in that: A reinforcement assembly is provided on the core plate (1), the reinforcement assembly comprising two first ribs (9) distributed up and down and two second ribs (10) distributed up and down, the second ribs (10) being provided on the first connecting plate (11).

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