Self-resetting buckling-restrained brace device
By designing a self-reset anti-buckling support device for a single-line energy-consuming inner core and a return spring member, combining the rubber cushion layer and stiffener, the problems of excessive structural pressure and complex and expensive design when resisting lateral forces in the prior art are solved. Good energy consumption and reset effect are achieved, and residual deformation is reduced.
Patent Information
- Application Number
- CN202420661532.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The existing self-reset anti-buckling support devices can easily lead to excessive structural pressure when resisting lateral forces, and the shape memory alloy support members are complex in design, small output and expensive, making it difficult to effectively control the maximum deformation and residual deformation of the structure.
A self-reset anti-buckling support device including an energy-consuming inner core, a restraining unit and a return spring member is designed. The energy-consuming inner core is a one-shaped structure. The restraining unit consists of front and rear restraining plates and a return spring member, combined with a rubber pad layer and stiffener ribs, which realize self-reset function through reset ribs and springs.
It achieves good energy consumption capacity and reset effect, basically eliminates residual deformation of anti-buckling support, and improves anti-buckling ability and overall toughness.
Smart Images
Figure CN222206840U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of protective structures of buildings, in particular to a self-resetting anti-buckling support device. Background Art
[0002] Buckling-resistance braces are good energy-absorbing components and lateral force-resistance structural components. They can yield without buckling when subjected to tension or compression. Compared with traditional support components, buckling-resistance braces have more stable mechanical properties. After reasonable design, they can obtain higher stiffness and better hysteretic energy dissipation capacity. With the development and progress of society, people's demands for building functions are becoming more and more diversified, and higher requirements are also put forward for the deformation of structures under earthquakes. Therefore, how to strictly control the maximum deformation and residual deformation of structures has become a problem of concern. In order to solve the problem of residual deformation of buckling-resistance braces, scholars at home and abroad installed self-resetting devices on buckling-resistance braces to form self-resetting buckling-resistance braces, which can effectively reduce the residual deformation of components.
[0003] The current self-resetting anti-buckling supports use a variety of methods to achieve the self-resetting function. Some scholars use disc springs to achieve self-resetting. Compared with ordinary springs, it has a high consumption rate but is relatively rigid. It is easy to cause excessive instantaneous pressure on the structure during an earthquake, which in turn causes damage to the structure. SMA shape memory alloy, as a new type of intelligent material with shape memory effect and superelasticity, is also often used in self-resetting devices. It can effectively dissipate seismic energy and achieve self-resetting under large plastic deformation. However, the research and development or design structure of common shape memory alloy supports is cumbersome, mostly limited to wire materials, with low output and can only be subjected to tension, and there are problems such as high prices.
[0004] Therefore, how to provide a self-resetting anti-buckling brace with strong energy dissipation capacity and good reset effect has become a problem that technical personnel in this field need to solve urgently. Utility Model Content
[0005] The utility model aims to provide a self-resetting anti-buckling support device to solve the problems existing in the above-mentioned prior art.
[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a self-resetting anti-buckling support device, comprising:
[0007] An energy-dissipating inner core, a restraining unit for restraining the bending deformation of the energy-dissipating inner core, and a return spring component for restoring the tensile or compressive deformation of the energy-dissipating inner core;
[0008] The constraint units are centrally symmetrically installed on both sides of the energy-absorbing inner core. Two groups of return spring components are provided and respectively installed on two groups of the constraint units. The two return spring components are also centrally symmetrical about the energy-absorbing inner core.
[0009] The energy dissipation inner core is a straight-line structure, and stiffening ribs are welded at both ends of the energy dissipation inner core, and the stiffening ribs are perpendicular to the space of the energy dissipation inner core.
[0010] The restraint unit comprises a front restraint plate and a rear restraint plate of the same structure; the front restraint plate and the rear restraint plate are both provided with grooves inwardly dug on one side facing the energy-absorbing inner core, and the energy-absorbing inner core is placed in a cavity formed by the two grooves;
[0011] The center ends of both sides of the front restraining plate and the rear restraining plate are both provided with sliding grooves facing inwards, and the stiffening ribs pass through the sliding grooves.
[0012] The front restraint plate and the rear restraint plate are fixedly connected to the upper end plate and the lower end plate respectively;
[0013] The lengths of the front restraint plate and the rear restraint plate are both shorter than the length of the energy-absorbing inner core, and the front restraint plate and the rear restraint plate are fixedly connected by bolts.
[0014] Buffer layers are also arranged on both sides of the energy dissipation core, and the buffer layers are placed in the cavity.
[0015] The buffer layer is a rubber cushion layer.
[0016] The reset spring structure includes at least two reset ribs, and the two ends of the reset ribs are respectively fixedly mounted on the upper end plate and the lower end plate; a straight-line positioning end plate and an L-shaped positioning end plate are welded on the front constraint plate / rear constraint plate, and one end of the L-shaped positioning end plate is also fixedly connected to the upper end plate / lower end plate; the straight-line positioning end plate is vertically mounted on the front constraint plate / rear constraint plate; the reset rib passes through the straight-line positioning end plate; the reset rib passes through the short axis end plate part of the L-shaped positioning end plate; and a spring is installed on the reset rib, and the spring is respectively arranged between the straight-line positioning end plate and the L-shaped positioning end plate and the L-shaped positioning end plate and the upper end plate / lower end plate.
[0017] The L-shaped positioning end plate is also provided with a clearance groove, and the end of the stiffening rib is placed in the clearance groove.
[0018] The utility model discloses the following technical effects: the device combines the advantages of the self-resetting system and the anti-buckling support, has good energy dissipation capacity, can basically eliminate the large residual deformation of the anti-buckling support, and has a good energy dissipation and resetting effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0020] Figure 1 It is a schematic diagram of the structure of the utility model;
[0021] Figure 2 This is a front view structural schematic diagram of the utility model;
[0022] Figure 3 It is a schematic diagram of the top view structure of the utility model;
[0023] Figure 4 This is a schematic diagram of the AA cross-sectional structure of the utility model;
[0024] Figure 5 It is a side view structural schematic diagram of the utility model;
[0025] Among them, 1. upper end plate; 2. lower end plate; 3. energy-absorbing inner core; 4. stiffening ribs; 5. buffer layer; 6. front constraint plate; 7. rear constraint plate; 8. bolts; 9. spring; 10. reset ribs; 11. I-shaped positioning end plate; 12. L-shaped positioning end plate. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0028] The utility model provides a self-resetting anti-buckling support device, comprising:
[0029] An energy dissipation inner core 3, a restraining unit for restraining the bending deformation of the energy dissipation inner core 3, and a return spring member for restoring the tensile or compressive deformation of the energy dissipation inner core 3;
[0030] The constraint units are centrally symmetrically installed on both sides of the energy-absorbing inner core 3 . Two groups of return spring components are provided and respectively installed on the two groups of constraint units. The two return spring components are also centrally symmetrical about the energy-absorbing inner core 3 .
[0031] The energy dissipation inner core 3 is a straight-line structure, and stiffening ribs 4 are welded at both ends of the energy dissipation inner core 3 , and the stiffening ribs 4 are vertical to the energy dissipation inner core 3 in space.
[0032] The restraint unit includes a front restraint plate 6 and a rear restraint plate 7 of the same structure; the front restraint plate 6 and the rear restraint plate 7 are both provided with grooves inwardly on one side facing the energy-absorbing inner core 3, and the energy-absorbing inner core 3 is placed in the cavity formed by the two grooves;
[0033] The center ends of both sides of the front restraining plate 6 and the rear restraining plate 7 are provided with sliding grooves inwardly, and the stiffening ribs 4 pass through the sliding grooves.
[0034] The front restraining plate 6 and the rear restraining plate 7 are fixedly connected to the upper end plate 1 and the lower end plate 2 respectively;
[0035] The lengths of the front restraint plate 6 and the rear restraint plate 7 are both shorter than the length of the energy-absorbing inner core 3 , and the front restraint plate 6 and the rear restraint plate 7 are fixedly connected by bolts 8 .
[0036] Buffer layers 5 are also provided on both sides of the energy dissipation core 3 , and the buffer layers 5 are placed in the cavity.
[0037] The buffer layer 5 is a rubber cushion layer.
[0038] The reset spring structure includes at least two reset ribs 10, and the two ends of the reset rib 10 are respectively fixedly mounted on the upper end plate 1 and the lower end plate 2; a straight-line positioning end plate 11 and an L-shaped positioning end plate 12 are welded on the front constraint plate 6 / rear constraint plate 7, and one end of the L-shaped positioning end plate 12 is also fixedly connected to the upper end plate 1 / lower end plate 2; the straight-line positioning end plate 11 is vertically mounted on the front constraint plate 6 / rear constraint plate 7; the reset rib 10 passes through the straight-line positioning end plate 11; the reset rib 10 passes through the short axis end plate part of the L-shaped positioning end plate; and a spring 9 is installed on the reset rib 10, and the spring 9 is respectively arranged between the straight-line positioning end plate 11 and the L-shaped positioning end plate 12 and the L-shaped positioning end plate 12 and the upper end plate 1 / lower end plate 2.
[0039] The L-shaped positioning end plate 12 is also provided with a clearance groove, and the end of the stiffening rib 4 is placed in the clearance groove.
[0040] In one embodiment of the present invention, the installation sequence of the device includes the following steps:
[0041] First, weld the stiffening rib 4 to the energy-absorbing inner core 3 to form the energy-absorbing inner core, weld the front restraint plate 6 and the upper end plate 1 to form the front restraint component, and weld the rear restraint plate 7 and the lower end plate 2 to form the rear restraint component; install them in the order of front restraint component, buffer layer 5, energy-absorbing inner core 3, buffer layer 5, and rear restraint component.
[0042] Furthermore, a gap of a certain width is left between the front restraining member and the lower end plate 2, and a gap of a certain width is left between the rear restraining member and the upper end plate 1, and the widths of the two gaps are the same. Bolt holes slightly larger than the diameter of the bolts 8 are reserved on the front restraining plate 6 and the rear restraining plate 7, and the front restraining member and the rear restraining member are fixedly connected by the bolts 8 to form an anti-buckling support device.
[0043] Slide grooves slightly larger than the side area of the stiffening rib 4 are provided at both ends of the constraint plate, so that the self-resetting anti-buckling support device can slide freely when subjected to force without being constrained. At the same time, a groove is provided inside the constraint plate, and the energy-absorbing inner core 3 is placed inside the groove, which can prevent the energy-absorbing inner core 3 from buckling along its weak axis when it is compressed. The constraint plate has a reinforcing effect on the energy-absorbing inner core 3, so that the anti-buckling ability of the self-resetting anti-buckling support device is enhanced; after installation, one end of the constraint plate is connected to the end plate, and a certain gap is left between the other end and the other end plate, so that the two constraint plates can produce relative displacement. When the device is under tension or compression, the constraint plate will produce relative displacement with the movement of the end plate, but will not be pulled or compressed with the energy-absorbing inner core, so it can better play the role of anti-buckling and limiting.
[0044] In one embodiment of the utility model, the spring 9 is respectively arranged between the I-shaped positioning end plate 11 and the L-shaped positioning end plate 12, and between the L-shaped positioning end plate 12 and the upper and lower end plates. The reset rib 10 passes through the center of the spring 9 through the through hole left on the positioning end plate to form a self-reset device.
[0045] Two I-shaped positioning end plates 11 are respectively welded to 1 / 3 of the front and rear constraint plates, and then two L-shaped positioning end plates 12 are respectively welded to the upper end plate 1 and the lower end plate 2. Finally, the two ends of the reset rib 10 are connected to the upper end plate 1 and the lower end plate 2 to form a self-resetting anti-buckling support device.
[0046] In one embodiment of the utility model, the device welds stiffening ribs 4 at both ends of the energy-absorbing inner core 3 to enhance the stability of the ends of the energy-absorbing inner core 3. Rubber cushion layers are arranged on both sides of the energy-absorbing inner core 3. The rubber cushion layers have certain elasticity and toughness, which can effectively improve the seismic isolation performance and improve the overall toughness of the self-resetting anti-buckling support device. At the same time, the rubber cushion layer can be used as a buffer layer 5 to buffer the transmission of force, prevent the energy-absorbing inner core 3 from buckling along the strong axis direction when it is compressed, and improve the overall anti-buckling ability of the self-resetting anti-buckling support device.
[0047] In one embodiment of the utility model, the spring disposed between the straight-line positioning end plate 11 and the L-shaped positioning end plate 12 is called the middle spring, and the spring disposed between the L-shaped positioning end plate 12 and the end plate is called the side spring; when the self-resetting anti-buckling support device is pulled, the reset rib is pulled, the middle spring is compressed, and the side spring is pulled; when the self-resetting anti-buckling support device is compressed, the reset rib is compressed, the middle spring is pulled, and the side spring is compressed. By combining the reset rib with the spring for self-resetting, the residual deformation of the anti-buckling support can be better controlled, so that the self-resetting anti-buckling support device has a better reset ability.
[0048] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0049] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.
Claims
1. A self-resetting anti-buckling support device, characterized in that: include: An energy-dissipating inner core (3), a restraining unit for restraining the bending deformation of the energy-dissipating inner core (3), and a return spring component for restoring the tensile or compressive deformation of the energy-dissipating inner core (3); The constraint units are centrally symmetrically mounted on both sides of the energy-absorbing inner core (3); two groups of return spring components are provided and are respectively mounted on the two groups of constraint units; and the two return spring components are also centrally symmetrical about the energy-absorbing inner core (3); The energy-absorbing inner core (3) is a straight-line structure, and stiffening ribs (4) are welded at both ends of the energy-absorbing inner core (3), and the stiffening ribs (4) are vertical to the energy-absorbing inner core (3) in space; The restraint unit comprises a front restraint plate (6) and a rear restraint plate (7) of the same structure; the front restraint plate (6) and the rear restraint plate (7) are both provided with grooves on one side facing the energy-absorbing inner core (3), and the energy-absorbing inner core (3) is placed in a cavity formed by the two grooves; The front restraining plate (6) and the rear restraining plate (7) are both provided with sliding grooves inwardly at the center ends of both sides, and the stiffening ribs (4) pass through the sliding grooves.
2. A self-resetting anti-buckling brace according to claim 1, characterized in that: The front restraining plate (6) and the rear restraining plate (7) are fixedly connected to the upper end plate (1) and the lower end plate (2) respectively; The lengths of the front restraining plate (6) and the rear restraining plate (7) are both shorter than the length of the energy-absorbing inner core (3), and the front restraining plate (6) and the rear restraining plate (7) are fixedly connected by bolts (8).
3. A self-resetting anti-buckling brace according to claim 1, characterized in that: Buffer layers (5) are also provided on both sides of the energy dissipation inner core (3), and the buffer layers (5) are placed in the cavity.
4. A self-resetting anti-buckling brace according to claim 3, characterized in that: The buffer layer (5) is a rubber cushion layer.
5. A self-resetting anti-buckling brace according to claim 2, characterized in that: The reset spring structure comprises at least two reset ribs (10), and the two ends of the reset ribs (10) are respectively fixedly mounted on the upper end plate (1) and the lower end plate (2); a straight-line positioning end plate (11) and an L-shaped positioning end plate (12) are welded on the front constraint plate (6) / rear constraint plate (7), and one end of the L-shaped positioning end plate (12) is also fixedly connected to the upper end plate (1) / lower end plate (2); the straight-line positioning end plate (11) is vertically mounted on the front constraint plate (6) / rear constraint plate (7) The restraining plate (6) / rear restraining plate (7); the reset rib (10) passes through the I-shaped positioning end plate (11); the reset rib (10) passes through the short axis end plate portion of the L-shaped positioning end plate (12); and a spring (9) is installed on the reset rib (10), and the spring (9) is respectively arranged between the I-shaped positioning end plate (11) and the L-shaped positioning end plate (12) and between the L-shaped positioning end plate (12) and the upper end plate (1) / lower end plate (2).
6. A self-resetting anti-buckling brace according to claim 5, characterized in that: The L-shaped positioning end plate (12) is also provided with a clearance groove, and the end of the stiffening rib (4) is placed in the clearance groove.