Buckling-restrained brace member

Abstract

The utility model discloses an anti-buckling supporting member in the field of steel structure buildings, which comprises a core plate, a lateral restraint plate and a cover plate, the main body of the core plate is linear, the middle part of the core plate is provided with a lateral bulge, the two ends of the core plate are provided with variable cross-section external expansion parts and variable cross-section stiffening ribs, and the variable cross-section external expansion parts and the main body of the core plate are integrally formed. The variable cross-section stiffening ribs and the variable cross-section external expansion parts are vertically and fixedly connected to form a cross-shaped cross section, the lateral restraining plates are symmetrically arranged on the two sides of the core plate, grooves matched with the lateral protrusions are formed in the middles of the lateral restraining plates, the cover plates are arranged at the two ends of the core plate, and the cover plates and the lateral restraining plates are connected through bolts. According to the buckling-restrained brace member, the core plate body is embedded in the middle through the lateral restraining plates and the cover plates, buckling instability can be avoided when the core plate body is subjected to reciprocating force, meanwhile, detachable connecting structures are adopted among the core plate, the lateral restraining plates and the cover plates, and the buckling-restrained brace member is convenient to disassemble and easy to maintain.

Description

Technical Field

[0001] The utility model relates to the field of steel structure buildings, in particular to an anti-buckling support component. Background Art

[0002] Buckling-resistance brace is an axial load-bearing member that can achieve full-section yielding regardless of tension or compression. Compared with traditional braces, it has good energy dissipation capacity and stable hysteresis performance. It can be used to provide lateral stiffness to the structure, and can also dissipate energy through yielding to reduce the response of the structure under earthquake or vibration. In recent years, it has been widely used in structural reinforcement and transformation or energy dissipation and vibration reduction design.

[0003] Traditional buckling-resistance braces mostly use the "steel pipe and mortar" constraint mechanism. Such buckling-resistance braces have a large deadweight and are not suitable for use in large-span spatial structures. Their poor durability limits their use in open-air environments. In addition, since traditional buckling-resistance braces are integrated components, they are not easy to repair. After being damaged by earthquake damage, the entire component needs to be replaced, wasting resources and increasing the cost of post-earthquake repair of buildings. Utility Model Content

[0004] The utility model aims to provide an anti-buckling support member to solve the problems existing in the prior art.

[0005] The purpose of the utility model is achieved as follows: a buckling-resistant support member comprises a core plate, a lateral constraint plate and a cover plate, the core plate body is in a straight line shape and has a lateral protrusion in the middle, and has a variable-section expansion portion and a variable-section stiffening rib at both ends, the variable-section expansion portion and the core plate body are integrally formed, the variable-section stiffening rib is vertically fixed to the variable-section expansion portion to form a cross-shaped section, the lateral constraint plates are symmetrically arranged on both sides of the core plate and have a groove in the middle that cooperates with the lateral protrusion, the cover plates are arranged at both ends of the core plate, and the cover plates and the lateral constraint plates are connected by bolts.

[0006] The buckling-resistant support member of the utility model adopts lateral restraint plates and cover plates to embed the core plate body in the middle, so that it can avoid buckling instability when subjected to reciprocating force, ensure that it enters a plastic energy consumption state to consume the energy brought by external earthquake disasters and reduce damage. At the same time, a detachable connection structure is adopted between the core plate, lateral restraint plates and cover plates, which is easy to disassemble and simple to maintain, and has good economic and social benefits.

[0007] As a further improvement of the utility model, the lateral protrusion includes a central rectangular portion and a trapezoidal expansion portion connected to the bottom of the rectangle. Therefore, when the core plate is subjected to a certain degree of tensile and compressive load and yields, and consumes seismic energy through hysteresis deformation, the lateral constraint plate can better provide lateral constraints, prevent the core plate from buckling under compression, and reduce the structural damage that may be caused to the core plate and the lateral constraint plate in the process.

[0008] As a further improvement of the present invention, the bottom width of the trapezoidal expansion portion is 4 times the width of the rectangular portion, which further improves the shock absorption capacity and reduces the structural damage that may be caused to the core plate and the lateral restraint plate during the process.

[0009] As a further improvement of the present invention, the length of the variable-section stiffening rib is greater than the length of the variable-section expansion portion, which can meet the demand for a larger bearing capacity and expand the application scope of the supporting member.

[0010] As a further improvement of the present invention, notches are provided at both ends of the cover plate to cooperate with the inner ends of the variable-section stiffening ribs, that is, the cover plate is longer, ensuring that the cover plate and the lateral constraint plates connected to the cover plate can cover the entire position of the core plate body, thereby minimizing buckling instability and reducing damage when subjected to reciprocating force.

[0011] As a further improvement of the present invention, the first connection holes are densely distributed at the corresponding positions of the cover plate and the lateral restraint plate, and the density of the first connection holes near the ends of the cover plate and the lateral restraint plate is higher than that in the middle, thereby ensuring the reliability of the connection.

[0012] As a further improvement of the utility model, a connecting plate is welded to the outer ends of the variable-section expansion portion and the variable-section stiffening rib, and a second connecting hole is provided on the connecting plate to improve the convenience of connecting the supporting member with other structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the anti-buckling support member of the utility model.

[0014] Figure 2 for Figure 1 Side view of.

[0015] Figure 3 It is a schematic diagram of the core plate of the buckling-resistance support member of the utility model.

[0016] Figure 4 It is a schematic diagram of the lateral restraint plate of the anti-buckling support member of the utility model.

[0017] Figure 5 It is a schematic diagram of a cover plate of the anti-buckling support member of the utility model.

[0018] Figure 6 for Figure 1 Center KK view.

[0019] Figure 7 for Figure 1 Middle PP view.

[0020] Among them, 1 is a core plate, 1A is a lateral protrusion, 1B is a variable-section expansion part, 1C is a variable-section stiffening rib, 2 is a lateral restraining plate, 3 is a cover plate, 4 is a first connecting hole, 5 is a connecting plate, and 6 is a second connecting hole. DETAILED DESCRIPTION

[0021] like Figure 1-7 The anti-buckling support member shown includes a core plate 1, a lateral restraint plate 2 and a cover plate 3.

[0022] The main body of the core plate 1 is in the shape of a straight line and has a lateral protrusion 1A in the middle, and has a variable cross-section expansion part 1B and a variable cross-section stiffening rib 1C at both ends. The variable cross-section expansion part 1B and the main body of the core plate 1 are formed in one piece, and the variable cross-section stiffening rib 1C is vertically fixed to the variable cross-section expansion part 1B to form a cross-shaped cross-section. The length of the variable cross-section stiffening rib 1C is greater than that of the variable cross-section expansion part 1B, which can meet the demand for a larger bearing capacity and expand the scope of application of the support member.

[0023] The lateral restraint plates 2 are symmetrically arranged on both sides of the core plate 1 and have a groove in the middle that matches the lateral protrusion 1A. The lateral protrusion 1A includes a central rectangular portion and a trapezoidal expansion portion connected to the bottom of the rectangle. The bottom width of the trapezoidal expansion portion is 4 times the width of the rectangular portion, so that when the core plate 1 is subjected to tensile and compressive loads reaching a certain level and yields, and consumes seismic energy through hysteresis deformation, the lateral restraint plates 2 can better provide lateral restraints, prevent the core plate 1 from compressive buckling, and reduce the structural damage that may be caused to the core plate 1 and the lateral restraint plates 2 during the process.

[0024] The cover plate 3 is arranged at both ends of the core plate 1. Notches that match the inner ends of the variable-section stiffening ribs 1C are provided at both ends of the cover plate 3, that is, the cover plate 3 is relatively long, ensuring that the cover plate 3 and the lateral constraint plate 2 connected to the cover plate 3 can cover the entire position of the main body of the core plate 1, so as to avoid buckling instability to the greatest extent when subjected to reciprocating force and reduce damage. The cover plate 3 and the lateral constraint plate 2 are connected by bolts. The first connection holes 4 are densely distributed at the corresponding positions of the cover plate 3 and the lateral constraint plate 2, and the density of the first connection holes 4 near the ends of the cover plate 3 and the lateral constraint plate 2 is higher than that in the middle, ensuring the reliability of the connection.

[0025] A connecting plate 5 is welded to the outer ends of the variable-section expansion portion 1B and the variable-section stiffening rib 1C. The connecting plate 5 is provided with a second connecting hole 6 to improve the convenience of connecting the supporting member with other structures.

[0026] The buckling-resistant support member of this embodiment uses lateral restraint plates 2 and cover plates 3 to embed the main body of the core plate 1 in the middle, so that it can avoid buckling instability when subjected to reciprocating force, ensure that it enters a plastic energy consumption state to consume the energy brought by external earthquake disasters and reduce damage. At the same time, a detachable connection structure is used between the core plate 1, the lateral restraint plates 2 and the cover plates 3, which is easy to disassemble and simple to maintain, and has good economic and social benefits.

[0027] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A buckling-resistance support member, characterized in that: It includes a core plate, a lateral constraint plate and a cover plate. The core plate body is in a straight line shape and has a lateral protrusion in the middle, and has variable-section expansion parts and variable-section stiffening ribs at both ends. The variable-section expansion part and the core plate body are formed in one piece. The variable-section stiffening rib is vertically fixed to the variable-section expansion part to form a cross-shaped section. The lateral constraint plates are symmetrically arranged on both sides of the core plate and have grooves in the middle that match the lateral protrusions. The cover plates are arranged at both ends of the core plate, and the cover plates are connected to the lateral constraint plates by bolts.

2. The buckling-resistance support member according to claim 1, characterized in that: The lateral protrusion includes a central rectangular portion and a trapezoidal outward expansion portion connected to the bottom of the rectangle.

3. The buckling-resistance support member according to claim 2, characterized in that: The bottom width of the trapezoidal outward expansion portion is 4 times the width of the rectangular portion.

4. The buckling-resistance support member according to claim 1, characterized in that: The length of the variable-section stiffening rib is greater than the length of the variable-section expansion portion.

5. The buckling-resistance support member according to claim 4, characterized in that: Notches matching the inner ends of the variable-section stiffening ribs are provided at both ends of the cover plate.

6. The buckling-resistance support member according to any one of claims 1 to 5, characterized in that: The first connection holes are densely distributed at corresponding positions of the cover plate and the lateral restraint plate, and the density of the first connection holes near the ends of the cover plate and the lateral restraint plate is higher than that in the middle.

7. The buckling-resistance support member according to any one of claims 1 to 5, characterized in that: A connecting plate is welded to the outer ends of the variable-section expansion portion and the variable-section stiffening rib, and a second connecting hole is provided on the connecting plate.

Images