A self-centering buckling-restrained brace device

Abstract

The utility model discloses a kind of self-resetting buckling restrained brace devices, including core plate, both ends of core plate are equipped with outer sealing plate and inner sealing plate, there is concrete between two inner sealing plates, and there is outer sleeve outside concrete;Towing assembly, outer sealing plate and inner sealing plate are connected by towing assembly, there is polyurethane elastic layer vulcanization integrated process between outer sealing plate and inner sealing plate, outer sealing plate, polyurethane elastic layer and inner sealing plate are tightly combined as a whole, eliminate the connecting gap and weak link between each component, significantly improve the integrity and stability of structure, buckling deformation occurs after earthquake support, the spacing between outer sealing plate and inner sealing plate increases, but due to the connection of polyurethane elastic layer and steel strand, outer sealing plate and inner sealing plate move towards each other, so that the deformed support is self-resetting.

Description

Technical Field

[0001] This utility model belongs to the field of building vibration reduction technology, specifically relating to a self-resetting buckling restraint brace for post-earthquake building repositioning. Background Technology

[0002] Buckling-restrained braces are commonly used dampers in building seismic isolation to dissipate energy during earthquakes. However, ordinary buckling-restrained braces lack self-resetting capabilities, leading to permanent deformation of both the building and the brace after an earthquake, which is detrimental to post-disaster recovery. Utility Model Content

[0003] The purpose of this invention is to provide a self-resetting buckling restraint support device to solve the problems of storing and conveniently accessing temporary tools in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A self-resetting buckling restraint support device includes a core plate, with an outer sealing plate and an inner sealing plate installed at both ends of the core plate, and concrete between the two inner sealing plates; The traction assembly, outer sealing plate and inner sealing plate are connected by the traction assembly, and there is a polyurethane elastic layer between the outer sealing plate and the inner sealing plate; Preferably, the outer sealing plate and the inner sealing plate are integrally formed by vulcanizing the polyurethane elastic layer. This integral vulcanization process tightly bonds the outer sealing plate, the polyurethane elastic layer, and the inner sealing plate into a single unit, eliminating gaps and weak points between components and significantly improving the overall integrity and stability of the structure. When subjected to external forces, the components work together to resist deformation and damage, effectively preventing structural failure due to component separation or loosening. Furthermore, the integrated structure provides excellent sealing, preventing external moisture, dust, corrosive substances, etc., from entering the device, further extending its service life.

[0005] Preferably, the inner sealing plate is connected with pre-embedded bolts, one end of which is equipped with a nut assembly. The nut assembly is located between the outer sealing plate and the inner sealing plate, and the pre-embedded bolts are symmetrically distributed around the core plate.

[0006] Preferably, the two inner sealing plates are connected by concrete pouring, with pre-embedded bolts located within the concrete. Because one end of the pre-embedded bolt is located in the concrete and reinforced by the concrete pouring, while the other end, a nut assembly, is located between the outer sealing plate and the inner sealing plate, the pre-embedded bolt, the inner sealing plate, and the concrete form a unified whole. This stable connection of the inner sealing plates helps improve the deformation resistance of the entire self-resetting buckling-restrained brace. When subjected to external forces such as earthquakes or wind-induced vibrations, the pre-embedded bolts and nut assembly can work together to limit the relative displacement of the inner sealing plates, reduce structural deformation, and allow the device to better perform its buckling restraint and self-resetting functions.

[0007] Preferably, the core plate has cross plates at both ends, forming a cross shape with the core plate. This cross structure creates a rigid connection between the core plate and the cross plates in two mutually perpendicular directions, effectively increasing the cross-sectional area and moment of inertia of the structure. When subjected to external forces, this structure can distribute stress more evenly, reducing local stress concentration and thus improving the load-bearing capacity of the entire device, enabling it to withstand greater loads. The cross plates can provide additional restraint forces in the initial stage of core plate buckling, limiting the lateral displacement of the core plate and delaying the occurrence and development of buckling. Compared with structures without cross plates, the cross structure can significantly increase the core plate's critical buckling load and enhance the buckling restraint capability of the device.

[0008] Preferably, the outer sealing plate has a cross groove on its surface and four first positioning holes are rectangularly distributed on its surface; the inner sealing plate has a rectangular groove on its surface and second positioning holes and bolt holes are symmetrically arranged on both sides of the rectangular groove, and the number of second positioning holes is equal to that of the first positioning holes and they are concentrically fitted.

[0009] Preferably, the traction assembly includes a steel strand, one end of which is fitted with a steel strand end cap, and the outer sealing plate and the inner sealing plate are connected by the steel strand.

[0010] Preferably, the nut assembly includes two nuts and a circular washer. Using two nuts for connection significantly improves the strength of the connection compared to a single nut. When the device is subjected to various dynamic and static loads, the two nuts cooperate to effectively prevent loosening, ensuring a stable connection between the outer and inner sealing plates, avoiding structural damage due to connection failure, and guaranteeing the overall structural safety. When the two nuts work together, the preload is applied more evenly to the connection. The circular washer plays an auxiliary role, ensuring that the preload is evenly distributed on the surfaces of the connected components (outer and inner sealing plates), reducing localized stress caused by preload concentration, lowering the risk of deformation or damage to the connected components, and improving the stability and durability of the connection.

[0011] The technical solution of this utility model has the following beneficial effects: 1. The integrated vulcanization process tightly bonds the outer sealing plate, polyurethane elastic layer, and inner sealing plate into a whole, eliminating the connection gaps and weak points between the components, and significantly improving the integrity and stability of the structure. After an earthquake, the support buckles and the gap between the outer and inner sealing plates increases. However, due to the connection between the polyurethane elastic layer and the steel strands, the outer and inner sealing plates move towards each other, thereby enabling the deformed support to self-reset. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.

[0015] Figure 3 This is the overall left view of this utility model.

[0016] Figure 4 This is a diagram showing the disassembled and assembled structure of this utility model.

[0017] Figure 5 This is an exploded view of the present invention.

[0018] Figure reference numerals: 10, core board; 101, cross board; 20. Outer sealing plate; 201. Cross groove; 202. First positioning hole; 30. Inner sealing plate; 301. Rectangular groove; 302. Second positioning hole; 303. Bolt hole; 40. Concrete; 50. Embedded bolt; 60. Outer sleeve; 70. Steel strand termination; 80. Steel strand; 90. Nut assembly; 100. Polyurethane elastic layer. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] Example 1: Reference Figures 1-5 , A self-resetting buckling restraint support device includes a core plate 10, with an outer sealing plate 20 and an inner sealing plate 30 installed at both ends of the core plate 10, and concrete 40 between the two inner sealing plates 30; a traction assembly, with the outer sealing plate 20 and the inner sealing plate 30 connected by the traction assembly, and a polyurethane elastic layer 100 between the outer sealing plate 20 and the inner sealing plate 30. In the above scheme, one end of the core plate 10 can be welded or anchored to the beam-column joint plate of the upper floor of the building, while the other end of the core plate 10 can be welded or anchored to the beam-column joint plate or floor of the lower floor of the building. Here, the two ends of the core plate 10 do not need to be deliberately distinguished and can be represented as either end. The core plate 10 has a symmetrical structure. Outer sealing plates 20 and inner sealing plates 30 are installed near both ends of the core plate 10. Concrete 40 is placed between the inner sealing plates 30, forming a reinforced structure. A traction component is used to position the distance between the outer sealing plates 20 and the inner sealing plates 30, and a polyurethane elastic layer 100 connects the sealing plates 20 and 30. When the device is subjected to external forces, such as earthquakes or wind-induced vibrations, the core plate may buckle. The polyurethane elastic layer 100 has good elasticity and can undergo elastic deformation during the deformation of the core plate 10, absorbing and dissipating some energy, reducing the impact of external forces on other components of the device, thereby reducing the stress generated by vibration in the entire structure and improving the structure's seismic and wind resistance. The polyurethane elastic layer 100 can mitigate the effects of vibration: it can effectively buffer vibrations generated during operation, prevent excessive transmission and amplification of vibrations within the structure, ensure the stability and reliability of the device, and extend its service life. For example, in some vibration-sensitive building structures, the polyurethane elastic layer 100 can reduce the adverse effects of vibration on internal equipment and personnel. Self-resetting assistance: The polyurethane elastic layer 100 plays a key role in this process. When the external force disappears, the polyurethane elastic layer 100, relying on its own elastic restoring force, can push the core plate 10 and other related components back to their initial positions, realizing the self-resetting of the device. This allows the structure to quickly return to its normal working state after experiencing loads, reducing residual deformation of the structure. Sealing function: The polyurethane elastic layer 100 can play a certain sealing role, preventing external moisture, dust and other impurities from entering the space between the outer sealing plate 20 and the inner sealing plate 30, avoiding these impurities from causing erosion and damage to concrete and other components, and protecting the internal materials and structure of the device.

[0021] The concrete 40 is surrounded by an outer sleeve 60. The outer sleeve 60 is the outermost layer of the self-resetting buckling restraint brace, used to seal the entire self-resetting buckling restraint brace and improve the overall protective performance.

[0022] Preferred reference Figure 2 and Figure 4 The outer sealing plate 20 and the inner sealing plate 30 are integrally formed by vulcanization of a polyurethane elastic layer 100.

[0023] In the preferred embodiment, the integrated vulcanization process tightly bonds the outer sealing plate 20, the polyurethane elastic layer 100, and the inner sealing plate 30 into a single unit, eliminating gaps and weak points between components and significantly improving the overall integrity and stability of the structure. When subjected to external forces, the components work together to resist deformation and damage, effectively preventing structural failure due to component separation or loosening. Furthermore, the integrated structure provides excellent sealing, preventing external moisture, dust, corrosive substances, and other contaminants from entering the device, further extending its service life.

[0024] Preferred reference Figure 4 The inner sealing plate 30 is connected to a pre-embedded bolt 50, and a nut assembly 90 is installed at one end of the pre-embedded bolt 50. The nut assembly 90 is located between the outer sealing plate 20 and the inner sealing plate 30. The pre-embedded bolts 50 are symmetrically distributed with respect to the core plate 10. The two inner sealing plates 30 are connected by a concrete 40, and the pre-embedded bolts 50 are located inside the concrete 40.

[0025] In the preferred embodiment, one end of the embedded bolt 50 is located at the concrete 40 and reinforced by the concrete 40, while the other end, the nut assembly 90, is located between the outer sealing plate 20 and the inner sealing plate 30. Thus, the embedded bolt 50, the inner sealing plate 30, and the concrete 40 form a single unit. The stable connection of the inner sealing plate 30 helps improve the deformation resistance of the entire self-resetting buckling restraint brace. When subjected to external forces such as earthquakes or wind-induced vibrations, the embedded bolt 50 and the nut assembly 90 can work together to limit the relative displacement of the inner sealing plate 30, reduce structural deformation, and allow the device to better perform its buckling restraint and self-resetting functions.

[0026] Preferred reference Figures 1-5 The core board 10 has cross plates 101 at both ends, and the cross plates 101 and the core board 10 form a cross.

[0027] In the preferred embodiment, the "+" structure creates a rigid connection between the core plate 10 and the cross plate 101 in two mutually perpendicular directions, effectively increasing the cross-sectional area and moment of inertia of the structure. When subjected to external forces, this structure can distribute stress more evenly, reducing local stress concentration and thus improving the overall load-bearing capacity of the device, enabling it to withstand larger loads. The cross plate 101 provides additional restraint during the initial buckling stage of the core plate 10, limiting its lateral displacement and delaying the occurrence and development of buckling. Compared to a structure without the cross plate 101, the "+" structure significantly increases the buckling critical load of the core plate 10, enhancing the buckling restraint capability of the device.

[0028] Furthermore, the outer sealing plate 20 has a cross groove 201 on its surface and four first positioning holes 202 are rectangularly distributed on its surface; the inner sealing plate 30 has a rectangular groove 301 on its surface and second positioning holes 302 and bolt holes 303 are symmetrically arranged on both sides of the rectangular groove 301. The number of second positioning holes 302 is equal to that of the first positioning holes 202 and they are concentrically fitted.

[0029] The traction assembly includes a steel strand 80, one end of which is fitted with a steel strand end cap 70. The outer sealing plate 20 and the inner sealing plate 30 are connected by the steel strand 80.

[0030] In a further embodiment, the cross groove 201 on the surface of the outer sealing plate 20 is used to facilitate the installation of the core plate 10. The steel strand 80 passes through the second positioning hole 302 and the first positioning hole 202 to reinforce the connection between the outer sealing plate 20 and the inner sealing plate 30. The length of the steel strand 80 is stabilized by the steel strand end cap 70 to locate the distance between the outer sealing plate 20 and the inner sealing plate 30.

[0031] Preferably, the nut assembly 90 includes two nuts and a circular washer.

[0032] In the preferred embodiment, two nuts are used for connection, which significantly improves the strength of the connection compared to a single nut. When the device is subjected to various dynamic and static loads, the two nuts cooperate to effectively prevent loosening, ensuring a stable connection between the outer sealing plate 20 and the inner sealing plate 30, avoiding structural damage due to connection failure, and ensuring the safety of the overall structure. When the two nuts work together, the preload is applied more evenly to the connection. The circular washer plays an auxiliary role, ensuring that the preload is evenly distributed on the surfaces of the connected components (outer and inner sealing plates), reducing localized stress caused by preload concentration, lowering the risk of deformation or damage to the connected components, and improving the stability and durability of the connection.

[0033] The specific implementation process of this embodiment is as follows: After the earthquake, the support buckles and deforms, and the gap between the outer end plate 20 and the inner end plate 30 increases. However, due to the connection between the polyurethane elastic layer 100 and the steel strand 80, the outer end plate 20 and the inner end plate 30 move towards each other, thereby causing the deformed support to self-reset.

[0034] The above embodiments are merely exemplary models of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Various modifications or equivalent substitutions can be made to this utility model within its substance and scope of protection. Such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "inner," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached circle, or the orientation or positional relationship commonly used when the utility model product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, these terms indicating orientation or positional relationship should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should be further noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, these terms can refer to a fixed connection, a detachable connection, or an integral connection between components; they can also refer to a mechanical connection or an electrical connection; or they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

Claims

1. A self-resetting buckling restraint support device, characterized in that: Includes a core plate (10), both ends of which are equipped with an outer sealing plate (20) and an inner sealing plate (30), with concrete (40) between the two inner sealing plates (30), and an outer sleeve (60) outside the concrete (40). The traction assembly, the outer sealing plate (20) and the inner sealing plate (30) are connected by the traction assembly, and there is a polyurethane elastic layer (100) between the outer sealing plate (20) and the inner sealing plate (30).

2. The self-resetting buckling restraint support device according to claim 1, characterized in that: The outer sealing plate (20) and the inner sealing plate (30) are integrally formed by vulcanization through the polyurethane elastic layer (100).

3. The self-resetting buckling restraint support device according to claim 2, characterized in that: The inner sealing plate (30) is connected with a pre-embedded bolt (50), and a nut assembly (90) is installed at one end of the pre-embedded bolt (50). The nut assembly (90) is located between the outer sealing plate (20) and the inner sealing plate (30). The pre-embedded bolts (50) are symmetrically distributed with respect to the core plate (10).

4. The self-resetting buckling restraint support device according to claim 3, characterized in that: The two inner sealing plates (30) are connected by concrete (40), and the pre-embedded bolts (50) are located inside the concrete (40).

5. The self-resetting buckling restraint support device according to claim 4, characterized in that: The core plate (10) has cross plates (101) at both ends, and the cross plates (101) and the core plate (10) form a cross.

6. The self-resetting buckling restraint support device according to claim 5, characterized in that: The outer sealing plate (20) has a cross groove (201) on its surface and four first positioning holes (202) are rectangularly distributed on its surface. The inner sealing plate (30) has a rectangular groove (301) on its surface. The rectangular groove (301) has a second positioning hole (302) and a bolt hole (303) symmetrically arranged on both sides. The number of the second positioning holes (302) is equal to that of the first positioning holes (202) and they are concentrically matched.

7. The self-resetting buckling restraint support device according to claim 6, characterized in that: The traction assembly includes a steel strand (80), one end of which is fitted with a steel strand end cap (70), and the outer sealing plate (20) and the inner sealing plate (30) are connected by the steel strand (80).

8. The self-resetting buckling restraint support device according to claim 3, characterized in that: The nut assembly (90) includes two nuts and a circular washer.

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