Deformation-controllable double-inner-core buckling-restrained brace
By setting constraint components at both ends of the double core plate of the anti-buckling support and setting a limit space to control its deformation, the problem of excessive strain amplitude of the existing anti-buckling support when the energy-consuming section is deformed in concentrated deformation, improving service life and structural safety.
Patent Information
- Application Number
- CN202421666395.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-15
AI Technical Summary
When the existing anti-buckling support is concentrated in the energy-consuming section, the strain amplitude of the restraint exceeds the design value, resulting in a decrease in service life and structural safety and reliability.
The deformation controllable double inner core anti-buckling support design is adopted. By setting a restraint member at both ends of the double core plate and setting a limit space at the other end of the restraint member, the deformation of the double core plate is controlled within the range of the limit space by cooperating with the limit space.
It effectively avoids excessive deformation of the double-core board, extends service life, improves the reliability and safety of the structure, and ensures the reliability of load transfer.
Smart Images
Figure CN222878954U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of anti-buckling supports, in particular to a deformable and controllable double-core anti-buckling support. Background Art
[0002] Buckling-resistance braces absorb and consume external input energy through the elastic-plastic deformation of the core material, thereby improving the safety and reliability of the main structure under extreme natural disasters such as earthquakes and hurricanes.
[0003] Although the current anti-buckling brace composed of an energy-absorbing section and an elastic section can meet the basic mechanical performance requirements such as providing a large lateral stiffness and dissipating external energy, the anti-buckling brace has an elastic section in the middle area. Once the energy-absorbing sections on both sides cannot yield at the same time due to processing or internal defects, the deformation of the two energy-absorbing sections will be uneven during actual operation, and the energy-absorbing section that yields first will have obvious deformation concentration.
[0004] When the axial deformation applied to both ends of the anti-buckling brace is concentrated in a certain energy dissipation section, the actual strain amplitude of the inner core of the energy dissipation section will be significantly higher than the design value, which will not only easily cause local buckling failure of the constrained component, but also seriously reduce the fatigue life of the anti-buckling brace, thereby affecting the safety and reliability of the overall structure. Utility Model Content
[0005] The utility model provides a deformation controllable double inner core buckling-resistance support, which is used to solve the technical problem that when the energy-consuming section of the buckling-resistance support is subjected to concentrated deformation, the strain amplitude of the constraint part exceeds the design value, resulting in reduced service life.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A deformation controllable double-core anti-buckling support comprises a constraint member and a double-core plate, wherein the constraint member is respectively sleeved on opposite ends of the double-core plate, one end of the constraint member is fixedly connected to the double-core plate, and the other end of the constraint member is provided with a limited space, and the connecting end of the double-core plate cooperates with the limited space through a limit piece, so that the deformation of the double-core plate is controlled within the range of the limit space.
[0008] It is further defined that the double core plate comprises two single core plates arranged in parallel, the single core plate comprises two energy absorbing core plates and an elastic core plate connected between the two energy absorbing core plates, and the single core plate is an integrated structure;
[0009] The restraining member is sleeved on the outside of the two single core plates, the limiting space is opened along the length direction of the energy absorbing core plate, and the limiting space cooperates with the corresponding connecting end of the energy absorbing core plate through the limiting piece, so that the energy absorbing core plate can be deformed within the range of the limiting space.
[0010] It is further defined that an end rib is provided between the two single core plates, the end rib is located at the connection end of the energy-absorbing core plate, and the end rib cooperates with the limiting space through a limiting member.
[0011] It is further defined that a connecting hole is provided on the end rib plate, and the end rib plate is connected to the connecting hole through a stopper; the inner diameter of the connecting hole is d0, the outer diameter of the stopper is d, 0<(d0-d)≤0.2mm;
[0012] The width of the limit space is d0, and the length of the limit space is d+2δ, where δ is the maximum allowable deformation value of the energy-absorbing core plate.
[0013] It is further defined that the restraining member is sleeved on the outside of the energy-absorbing core plate, and the restraining member includes two cover plates and two U-shaped steels, the U-shaped steel is located between the two single core plates, the two U-shaped steels are arranged on opposite sides of the end rib plate along the width direction of the energy-absorbing core plate, the cover plate and the U-shaped steel are arranged along the length direction of the energy-absorbing core plate, the cover plate is arranged on the outer end surface of the corresponding energy-absorbing core plate, the end of the cover plate close to the elastic core plate is fixedly connected to the energy-absorbing core plate, the U-shaped steel is connected to the elastic core plate, and the cover plate is connected to the wing plate of the U-shaped steel;
[0014] The limiting spaces are arranged on the web of the U-shaped steel, and the connecting holes are respectively matched with the limiting spaces on the two U-shaped steels through limiting members.
[0015] It is further defined that the restraining member also includes a pad, which is arranged between the cover plate and the wing plate of the corresponding U-shaped steel, the pad is located on the outside of the energy-absorbing core plate, and the pad cooperates with the convergent groove.
[0016] It is further defined that the restraining member also includes a sealing plate, and two side ribs are arranged on the elastic core plate; the side ribs are connected between the two elastic core plates, and the two side ribs are arranged on opposite sides of the middle rib along the width direction of the elastic core plate, and the sealing plate is connected to the opposite ends of the U-shaped steel, and the side ribs are connected to the corresponding ends of the U-shaped steel through the sealing plates.
[0017] It is further defined that the elastic core plate is also connected to a middle rib plate, the middle rib plate is located between the two side rib plates, the two elastic core plates are arranged on opposite sides of the middle rib plate, and the end of the middle rib plate extends between the two U-shaped steels on the same side.
[0018] It is further defined that convergence slots are provided on opposite sides of the energy-absorbing core plate, and the convergence slots are provided along the length direction of the energy-absorbing core plate.
[0019] It is further defined that the vertical cross-sectional area of the connection end of the double core plate is S, and the vertical cross-sectional area of the energy dissipation core plate through the convergence slot is s, where S≥2s.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] 1. The utility model selects a double-core board and sets a constraint member on both ends of the double-core board, uses one end of the constraint member to be fixedly connected to the double-core board, and the other end of the constraint member is provided with a limiting space and connected to the connecting end of the double-core board, so that when one end of the double-core board encounters concentrated deformation, the deformation of the corresponding end of the double-core board can be controlled within the range of the limiting space, thereby avoiding damage to the double-core board, ensuring its service life, and improving structural reliability; at the same time, it can also drive the constraint member through the limiting piece to transfer excess load from one end of the double-core board to the other end of the double-core board, thereby ensuring reliable load transmission and further ensuring safety in use.
[0022] 2. The utility model opens a connection hole on the end rib plate and a limiting space on the U-shaped steel, and the two can be slidably connected through a limiting piece. The connection is reliable and easy to disassemble and assemble, thereby improving production efficiency and reducing maintenance difficulty. At the same time, the cover plate end is fixedly connected to the energy-absorbing core plate, and the side rib plate is used to fix the U-shaped steel and the elastic core plate, thereby improving the reliability of load transmission. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0024] Figure 2 This is a schematic diagram of the explosion of the inner core component of the utility model;
[0025] Figure 3 This is a schematic diagram of the structure of the inner core component of the utility model;
[0026] Figure 4 It is a schematic cross-sectional diagram of each part of the inner core component of the utility model, Figure 4 a is Figure 3 AA section diagram, Figure 4 b is Figure 3 BB cross-section diagram, Figure 4 c is Figure 3 Schematic diagram of the CC section;
[0027] Figure 5 This is a schematic diagram of the constraint component of the utility model. Figure 5 a is the installation diagram of U-shaped steel and sealing plate. Figure 5 b is the explosion diagram of the connection between the restraining component and the energy dissipating component;
[0028] Figure 6 This is a side view of the structure of the utility model;
[0029] Figure 7 This is a schematic cross-sectional view of the energy-consuming section of the utility model. Figure 7 a is Figure 6 Schematic diagram of the DD section, Figure 7 b is Figure 6 EE cross-section diagram, Figure 7 c is Figure 6 Schematic diagram of the FF cross section;
[0030] Figure 8 This is a schematic diagram of the pressure working condition of the utility model;
[0031] Fig. 9 This is a schematic diagram of the tensile working condition of the utility model;
[0032] Among them, 10-energy absorption section; 20-elastic section; 21-middle rib; 22-elastic core plate; 23-side rib; 30-energy absorption component; 31-end rib; 32-energy absorption core plate; 33-convergence groove; 40-restraint component; 41-cover plate; 42-U-shaped steel; 43-pad; 44-sealing plate; 50-connecting hole; 51-limiting space; 52-limiting member; 60-gasket. DETAILED DESCRIPTION
[0033] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the implementation methods described below.
[0034] refer to Figures 1 to 3 The present embodiment provides a deformable and controllable double-core anti-buckling support, including a double-core plate and a constraint member 40, wherein the constraint member 40 is sleeved on the opposite ends of the double-core plate, so that the deformable and controllable double-core anti-buckling support forms two energy-absorbing sections 10 and an elastic section 20 connected between the two energy-absorbing sections 10, and at this time, the energy-absorbing section 10 includes an energy-absorbing member 30 and a constraint member 40 sleeved on the outside of the energy-absorbing member 30.
[0035] One end of the constraint member 40 is fixedly connected to the energy absorbing member 30, and the other end of the constraint member 40 is provided with a limited space 51, and the limited space 51 is close to the connection end of the energy absorbing member 30, that is, the connection end of the double core plate, so that the connection end of the double core plate can control the deformation of the energy absorbing member 30 within the range of the limited space 51 through the limit piece 52 and the limit space 51, so as to avoid the deformation of the energy absorbing member 30 exceeding the design value and improve the service life; at the same time, when there is concentrated deformation in the energy absorbing section 10, when the deformation of the energy absorbing member 30 reaches the design value, the excess stress will be transmitted to the other energy absorbing section 10 through the constraint member and the elastic section fixedly connected to the constraint member, so as to ensure the stability and reliability of the structure.
[0036] The limiting space 51 can be formed by setting a sink groove, and the connecting end of the energy-absorbing component 30 is gap-connected with the limiting space 51 through the limiting member 52, so that the limiting member 52 moves in the limiting space 51; or the limiting space 51 is formed by setting an oblong hole, and the connecting end of the energy-absorbing component 30 passes through the limiting space 51 through the limiting member 52, so that the limiting member 52 moves in the limiting space 51; or the connecting end of the energy-absorbing component 30 is connected to the limiting member 52, and the limiting member 52 fixes the moving range under the constraint of the connecting member to form the limiting space 51.
[0037] Specifically, refer to Figure 2 to Figure 4 The energy-absorbing component 30 includes an end rib plate 31 and two energy-absorbing core plates 32. One end of the energy-absorbing core plate 32 is connected to the elastic section 20, and the other end of the energy-absorbing core plate 32 is provided with the end rib plate 31. The two energy-absorbing core plates 32 are provided at the upper and lower ends of the end rib plate 31. The end rib plate 31 is provided along the length direction of the energy-absorbing core plate 32. Preferably, the end rib plate 31 is provided along the axial direction of the energy-absorbing core plate 32. A connecting hole 50 is provided on the end rib plate 31, and the center of the connecting hole 50 is located in the middle position of the end rib plate 31.
[0038] Both ends of the energy-absorbing core plate 32 are connection ends. At this time, the end rib plate 31 is located at the connection end of the energy-absorbing core plate 32. A convergence slot 33 is provided between the two connection ends of the energy-absorbing core plate 32 to improve the deformation capacity of the energy-absorbing section 10. The length of the convergence slot 33 is L. y There are two convergent slots 33 , and the two convergent slots 33 are symmetrically arranged about the axis of the energy dissipation core plate 32 , so that the convergent slots 33 are located on the left and right sides of the end rib plate 31 .
[0039] The area of the vertical cross section of the energy-absorbing component 30 passing through the center of the connecting hole 50 is S, referring to Figure 4 energy-absorbing member 30 in the vertical cross-sectional area of the convergence notch 33 is s, reference Figure 4 b) In order to ensure that the energy-absorbing member 30 is always in an elastic state during operation, S ≥ 2s should be ensured.
[0040] The elastic section 20 includes a middle rib plate 21, two elastic core plates 22 and two side rib plates 23. Two energy-absorbing core plates 32 are respectively connected to the corresponding ends of the elastic core plate 22 to form a single core plate. The single core plate is an integrated structure, and two single core plates form a double core plate.
[0041] The middle rib 21 is arranged along the length direction of the elastic core plate 22, and the middle rib 21 is also arranged in the middle position of the elastic core plate 22, so that the middle rib 21 and the two end ribs 31 are in the same vertical plane, and the side ribs 23 are arranged on the opposite sides of the middle rib 21 along the width direction of the elastic core plate 22.
[0042] refer to Figure 3 and Figure 4 c. The length of the middle rib 21 is greater than that of the side rib 23 , and the end of the middle rib 21 extends to the corresponding connection end of the energy-absorbing core plate 32 . At this time, the convergent notch 33 is located between the end rib 31 and the corresponding end of the middle rib 21 .
[0043] The middle rib 21 and the two side ribs 23 are welded to the elastic core plate 22, and the energy-absorbing core plate 32 and the end ribs 31 are also connected by welding. The welding method can be, for example, full penetration welding to ensure reliable load transfer and thereby achieve deformation control of the energy-absorbing section 10.
[0044] For further explanation, see Figure 5 The restraining member 40 includes a sealing plate 44 , a cushion block 43 , two cover plates 41 , and two U-shaped steels 42 .
[0045] Among them, reference Figure 5 a and Figure 5 b. The U-shaped steel 42 extends along the length direction of the energy-absorbing core plate 32. The sealing plate 44 is arranged at the end of the U-shaped steel 42. The thickness of the sealing plate 44 is the same as the thickness of the U-shaped steel 42. The side ribs 23 are connected to the U-shaped steel 42 through the corresponding sealing plates 44. The side ribs 23 and the sealing plates 44 are connected by welding.
[0046] The U-shaped steel 42 is arranged between the upper and lower energy-absorbing core plates 32 . The two U-shaped steels 42 are arranged on opposite sides of the end ribs 31 with their webs facing each other. At this time, the corresponding end of the middle rib 21 is located between the two U-shaped steels 42 .
[0047] refer to Figure 5 b. The web of the U-shaped steel 42 is provided with a limited space 51, which is provided in the horizontal direction. The limited space 51 is directly opposite to the connecting hole 50 on the end rib 31, so that the connecting hole 50 can be connected with the limited space 51 through the limiting member 52. Figure 7 As shown in a; the limiting member 52 can be selected from a pin shaft or a high-strength bolt, so that the U-shaped steel 42 is movably connected to the end rib 31 through the limiting member 52. When in use, the limiting member 52 is located in the middle position of the limiting space 51. When the deformation of the energy-absorbing component 30 exceeds its maximum allowable value, the limiting member 52 moves to the end of the limiting space 51 and then drives the U-shaped steel 42 to move, thereby driving the elastic section 20 to deform through the sealing plate 44 at the end of the U-shaped steel 42, and finally transferring the excess stress to another energy-absorbing section.
[0048] The inner diameter of the connection hole 50 is d0, the outer diameter of the limiter 52 is d, and 0<(d0-d)≤0.2mm is satisfied; the length of the limit space 51 is d+2δ, wherein δ is the maximum allowable deformation of the energy dissipation section 10. Usually, in order to ensure that the buckling-resistance support can be cyclically loaded for 30 times under the design deformation to meet the fatigue performance requirements, if the energy dissipation core plate 32 is made of Q235 steel, it is preferable to make δ≤1.4%L y If the energy dissipation core plate 32 is made of high ductility and low yield point steel, the requirement can be appropriately relaxed to δ≤1.8%L y , L y is the length of the convergent notch 33 .
[0049] refer to Figure 7 a~ Figure 7 c. The cover plate 41 covers the upper end surface of the corresponding energy-absorbing core plate 32, so that the energy-absorbing component 30 is located between the two cover plates 41; the width of the cover plate 41 is greater than the width of the energy-absorbing core plate 32, so that the cover plate 41 extends to both sides of the width direction of the energy-absorbing core plate 32, and at the same time, the wing plate of the U-shaped steel 42 extends to be flush with the end corresponding to the cover plate 41.
[0050] The cover plate 41 is connected to the wing plate of the U-shaped steel 42. At this time, the pad 43 is selected to be arranged between the cover plate 41 and the corresponding wing plate of the U-shaped steel 42. The pad 43 is located on the opposite sides of the energy-absorbing core plate 32. The pad 43 is arranged along the length direction of the energy-absorbing core plate 32. In order to improve the connection stability between the constraint member 40 and the energy-absorbing member 30, one side of the pad 43 is selected to match the convergence slot 33, so that one side of the pad 43 extends to the convergence slot 33, and the other side of the pad 43 extends to be flush with the end of the cover plate 41; refer to Figure 7 a. It is preferred to arrange a gasket 60 between the cushion block 43 and the wing plate of the U-shaped steel 42 to reduce the wear between the cushion block 43 and the wing plate of the U-shaped steel 42.
[0051] refer to Figure 6 and Figure 7 The end of the cover plate 41 close to the elastic section 20 is welded to the energy-absorbing core plate 32, that is, the end of the cover plate 41 is welded to the single core plate; the cover plate 41 and the wing plate of the U-shaped steel 42 are connected by a plurality of high-strength bolts arranged at equal intervals, so that the constraint member 40 can fully constrain the energy-absorbing section 10.
[0052] Working principle:
[0053] In actual use, the inner core member (the inner core member includes a double core plate, end ribs 31, middle ribs 21 and side ribs 23) is first processed and assembled:
[0054] First, a connecting hole 50 is opened in the center of the end rib 31, and then the length of the convergence slot 33 is determined according to the requirements, and two end ribs 31, an intermediate rib 21, two side ribs 23 and two single core plates (including an elastic core plate 22 and energy-absorbing core plates 32 on both sides of the elastic core plate 22) are made, and then the intermediate rib 21, the two side ribs 23, the two end ribs 31 and the two single core plates are welded into an inner core component by full penetration welding.
[0055] Next, the restraining member 40 is processed and assembled:
[0056] Select U-shaped steel 42 and open a limiting space 51 on the web of the U-shaped steel 42, then prepare a sealing plate 44, a cushion block 43 and a cover plate 41, and open a plurality of connecting screw holes with corresponding positions and quantities on both sides of the cover plate 41, one side of the cushion block 43 and the upper and lower wing plates of the U-shaped steel 42.
[0057] Then, the two ends of the U-shaped steel 42 are welded to the sealing plates 44 respectively, and the cover plate 41 is placed on the outer end surface of the energy-absorbing core plate 32. Subsequently, the U-shaped steel 42 is placed between the two energy-absorbing core plates 32, and a cushion block 43 is arranged between the wing plate of the U-shaped steel 42 and the cover plate 41, and a gasket 60 is arranged between the cushion block 43 and the wing plate of the U-shaped steel 42. High-strength bolts are passed through corresponding connecting screw holes to stably connect the cover plate 41 and the U-shaped steel 42, so as to realize the comprehensive constraint of the constraint member 40 on the energy-absorbing member 30, and then the end of the cover plate 41 close to the elastic section 20 is welded to the energy-absorbing core plate 32, and at the same time, the side rib plate 23 is welded to the sealing plate 44 corresponding to the end to ensure reliable load transmission.
[0058] Finally, the limiting member 52 is used to sequentially pass through the limiting space 51 , the connecting hole 50 and the limiting space 51 , so as to flexibly connect the two U-shaped steels 42 with the end ribs 31 .
[0059] During operation, when the deformation-controlled double-core buckling-restrained brace works under compression, refer to Figure 8 If the left energy-absorbing section 10 produces concentrated deformation, the energy-absorbing component 30 is compressed and deformed to the right under pressure, and the deformation degree of the constraint component 40 is less than that of the energy-absorbing component 30. The end rib plate 31 drives the limiter 52 to slide along the limit space 51 through the connecting hole 50. When the deformation of the left energy-absorbing section 10 reaches the set value, the limiter 52 slides to the rightmost end of the limit space 51. When the stress still exists, the limiter 52 continues to push the U-shaped steel 42 to move to the right. At this time, the right end of the U-shaped steel 42 pushes the side rib plate 23 connected thereto to deform to the right, while the cover plate 41 follows the movement of the U-shaped steel 42 to drive the elastic core plate 22 to deform to the right, thereby transmitting the stress to the energy-absorbing section 10 on the right through the elastic section 20, realizing the regulation of the energy-absorbing section 10 when it is compressed and deformed, avoiding damage to the energy-absorbing section 10 when it is deformed in a concentrated manner, and affecting the service life and safety reliability of the structure.
[0060] Similarly, during operation, when the adjustable buckling restraint brace is working under tension, refer to Fig. 9 When the left energy-absorbing section 10 produces concentrated deformation, the limiting piece 52 moves to the leftmost end of the limiting space 51 due to the deformation of the energy-absorbing component 30, and the U-shaped steel 42 and the cover plate 41 also drive the right energy-absorbing section 10 to deform to the left through the elastic section 20. Therefore, the deformation of the left energy-absorbing component 30 will not continue to increase, meeting the actual use requirements.
[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the present invention.
Claims
1. A deformation controllable double inner core buckling restrained brace, characterized in that: The invention comprises a restraining member (40) and a double core plate, wherein the restraining member (40) is respectively sleeved on opposite ends of the double core plate, one end of the restraining member (40) is fixedly connected to the double core plate, and a limiting space (51) is arranged at the other end of the restraining member (40), and the connecting end of the double core plate cooperates with the limiting space (51) through a limiting member (52), so that the deformation of the double core plate is controlled within the range of the limiting space (51).
2. The controllable deformation double-core buckling-restrained brace according to claim 1, characterized in that: The double core plate comprises two single core plates arranged in parallel, the single core plate comprises two energy absorbing core plates (32) and an elastic core plate (22) connected between the two energy absorbing core plates (32), and the single core plate is an integrated structure; The restraining member (40) is sleeved on the outer sides of the two single core plates, and the limiting space (51) is opened along the length direction of the energy-absorbing core plate (32). The limiting space (51) cooperates with the corresponding connecting end of the energy-absorbing core plate (32) through the limiting member (52), so that the energy-absorbing core plate (32) is deformed within the range of the limiting space (51).
3. The controllable deformation double-core buckling-restrained brace according to claim 2, characterized in that: An end rib plate (31) is provided between the two single core plates. The end rib plate (31) is located at the connection end of the energy-absorbing core plate (32). The end rib plate (31) cooperates with the limiting space (51) through a limiting member (52).
4. The controllable deformation double-core buckling-restrained brace according to claim 3, characterized in that: The end rib plate (31) is provided with a connection hole (50), and the end rib plate (31) is connected to the connection hole (50) via a stopper (52); the inner diameter of the connection hole (50) is d0, and the outer diameter of the stopper (52) is d, 0<(d0-d)≤0.2 mm; The width of the limiting space (51) is d0, and the length of the limiting space (51) is d+2δ, wherein δ is the maximum allowable deformation value of the energy dissipation core plate (32).
5. The controllable deformation double-core buckling-restrained brace according to claim 4, characterized in that: The restraining member (40) is sleeved on the outer side of the energy-absorbing core plate (32). The restraining member (40) comprises two cover plates (41) and two U-shaped steels (42). The U-shaped steel (42) is located between the two single core plates. The two U-shaped steels (42) are arranged on opposite sides of the end rib plate (31) along the width direction of the energy-absorbing core plate (32). The cover plate (41) and the U-shaped steel (42) are both arranged along the length direction of the energy-absorbing core plate (32). The cover plate (41) is arranged on the outer side end surface of the corresponding energy-absorbing core plate (32). The end of the cover plate (41) close to the elastic core plate (22) is fixedly connected to the energy-absorbing core plate (32). The U-shaped steel (42) is connected to the elastic core plate (22). The cover plate (41) is connected to the wing plate of the U-shaped steel (42). The limiting space (51) is provided on the web of the U-shaped steel (42), and the connecting hole (50) is respectively matched with the limiting spaces (51) on the two U-shaped steels (42) through the limiting pieces (52).
6. The controllable deformation double-core buckling-restrained brace according to claim 5, characterized in that: The restraining member (40) further comprises a pad (43), wherein the pad (43) is arranged between the cover plate (41) and the wing plate of the corresponding U-shaped steel (42), the pad (43) is located outside the energy dissipation core plate (32), and the pad (43) cooperates with the convergent notch (33).
7. The controllable deformation double-core buckling-restrained brace according to claim 5, characterized in that: The restraining member (40) also includes a sealing plate (44), and two side ribs (23) are arranged on the elastic core plate (22); the side ribs (23) are connected between the two elastic core plates (22), and the two side ribs (23) are arranged on the opposite sides of the middle rib (21) along the width direction of the elastic core plate (22); the sealing plate (44) is connected to the opposite ends of the U-shaped steel (42), and the side ribs (23) are connected to the corresponding ends of the U-shaped steel (42) through the sealing plate (44).
8. The controllable deformation double-core buckling-restrained brace according to claim 7, characterized in that: The elastic core plate (22) is also connected to an intermediate rib plate (21), and the intermediate rib plate (21) is located between the two side rib plates (23). The two elastic core plates (22) are arranged on opposite sides of the intermediate rib plate (21), and the end of the intermediate rib plate (21) extends between the two U-shaped steels (42) on the same side.
9. The controllable deformation double-core buckling-restrained brace according to any one of claims 2 to 4, characterized in that: Converging notches (33) are provided on opposite sides of the energy-dissipating core plate (32), and the converging notches (33) are provided along the length direction of the energy-dissipating core plate (32).
10. The controllable deformation double-core buckling-restrained brace according to claim 9, characterized in that: The vertical cross-sectional area of the connection end of the double core plate is S, and the vertical cross-sectional area of the energy dissipation core plate (32) passing through the convergence notch (33) is s, wherein S≥2s.