All-steel double-core fabricated buckling-restrained brace

Abstract

The utility model discloses a full -steel double core assembly type buckling restrained brace belongs to building structure damping technical field, and the application includes flange open -hole channel steel restraint unit, flange open -hole H section steel restraint unit, core plate unit, non -bonding layer and elastic connecting section stiffener, open -hole channel steel restraint unit, open -hole H section steel restraint unit constitute restraint unit, the elastic connecting section stiffener is welded in the core plate unit end portion and forms core unit, and the non -bonding material is arranged on the outer surface of core unit and forms non -bonding layer, and the cavity connected with external joint plate is formed between the end portion of two core units, and the core unit is placed in the restraint unit inside. The utility model can solve the traditional problem of buckling restrained brace production, application aspect such as high production difficulty, production machining precision difficult guarantee, low connection precision tolerance between support and main structure of large tonnage buckling restrained brace assembly production, and with the characteristics of the post -earthquake core unit replaceable, is applicable to the application of new construction and reinforcement engineering project.

Description

Technical Field

[0001] This utility model relates to a building structure damping component, specifically an all-steel double-core prefabricated buckling restraint brace. Background Technology

[0002] In recent years, with the continuous development and increasing maturity of seismic technology in buildings, damping technology and its corresponding products have been widely used in new construction and reinforcement projects, and have been unanimously recognized by industry experts and structural engineers for their low cost and high performance.

[0003] Currently, most buckling-restrained braces widely used in engineering in my country have the following characteristics:

[0004] The outer constraint element is a steel-concrete composite confinement element;

[0005] The connection between the buckling restraint brace and the node plate is a welded connection or bolted connection within the control accuracy error range, with low connection accuracy tolerance and small adjustable range;

[0006] After an earthquake, it is difficult to quickly and easily replace damaged core units, and the repair costs are high.

[0007] Large-tonnage buckling restraint braces are difficult to assemble and produce, and the manufacturing precision is low.

[0008] The above characteristics all indicate that traditional buckling restraint braces have problems such as low manufacturing precision, high connection precision requirements, and high replacement and repair costs after earthquakes. Utility Model Content

[0009] To address the issues of low connection accuracy tolerance and difficulty in replacement of traditional buckling restraint braces, this invention provides an all-steel dual-core prefabricated buckling restraint brace.

[0010] This utility model provides the following technical solution:

[0011] The all-steel dual-core prefabricated buckling-restrained brace includes flange-perforated channel steel restraint units, flange-perforated H-beam restraint units, core plate units, an unbonded layer, and elastic connecting stiffeners. Flange-perforated channel steel restraint units are installed on both sides of the perforated H-beam restraint units, forming a restraint unit. Elastic connecting stiffeners are installed at both ends of the core plate units, and these stiffeners are welded to the ends of the core plate units to form a core unit. An unbonded layer is formed on the outer surface of the core unit. A cavity is formed at the ends between the two core units, connecting to an external node plate. The core unit is placed inside the restraint unit.

[0012] Furthermore, a core plate unit is installed in the groove on the H-side of the perforated H-beam constraint unit, and two core plate units are sandwiched together to form a double core plate.

[0013] Furthermore, the connection between the perforated channel steel constraint unit and the perforated H-beam constraint unit is a high-strength bolt connection, and the connection part is the connection between the channel steel flange and the H-beam flange. The number of perforated channel steel constraint units is 2, and the number of perforated H-beam constraint units is 1.

[0014] Furthermore, the core board unit has a rectangular cross-section, and the number of core board units is 2.

[0015] Furthermore, the material of the adhesive-free layer is rubber, polyethylene, silicone, or latex.

[0016] Furthermore, the number of stiffening ribs in the elastic connecting section is 4.

[0017] Furthermore, the cavity is connected to the external node plate by bolts or welding.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. Improved manufacturing precision of buckling-restrained braces: This invention significantly improves the manufacturing precision of the core unit, peripheral restraint unit, and unbonded layer of the buckling-restrained brace by employing prefabrication and assembly technology. This ensures both the dimensional consistency and geometric accuracy of the brace components and guarantees the stable performance of the brace components.

[0020] 2. Optimize the connection adjustment range between the support and the node plate: Compared with the traditional butt welding connection or bolt connection of the support, this utility model realizes the effective connection between the support component and the node plate within a large error range through the cavity structure formed at the end of the support, reducing the overall installation difficulty of the support component.

[0021] 3. Facilitates rapid replacement and repair after earthquakes: This utility model is designed with an easily disassembled constraint unit. After natural disasters such as earthquakes, the constraint unit can be quickly disassembled and the core unit replaced, greatly shortening the repair cycle and reducing repair costs.

[0022] 4. Achieving prefabricated production of large-tonnage buckling restraint braces: This utility model proposes a dual-core unit structure. By connecting the dual core units in parallel and prefabricating the restraint units, it is possible to not only reduce the production difficulty and cost of large-tonnage buckling restraint braces, but also improve production efficiency and product quality, which is conducive to promoting the application of buckling restraint braces on a wider scale. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the component of this utility model;

[0024] Figure 2This is a three-dimensional disassembly diagram of the component of this utility model;

[0025] Figure 3 This is a perspective view of the present utility model;

[0026] Figure 4 This is a front view of the present invention;

[0027] Figure 5 This is a top view of the present invention.

[0028] In the diagram: 1. Flange-perforated channel steel constraint unit; 2. Flange-perforated H-beam steel constraint unit; 3. Core plate unit; 4. High-strength bolt; 5. Unbonded layer; 6. Elastic connection section stiffening rib; 7. Cavity. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5 The all-steel double-core assembled buckling restraint brace of this utility model includes a flange-perforated channel steel restraint unit 1, a flange-perforated H-beam restraint unit 2, a core plate unit 3, an unbonded layer 5, and an elastic connecting section stiffening rib 6.

[0031] Among them, flange-perforated channel steel constraint units 1 are installed on both sides of the perforated H-beam constraint unit 2. The perforated channel steel constraint unit 1 and the perforated H-beam constraint unit 2 constitute the constraint unit. Elastic connecting section stiffening ribs 6 are installed at both ends of the core plate unit 3. The elastic connecting section stiffening ribs 6 are welded to the ends of the core plate unit 3 to form a core unit. The outer surface of the core unit is provided with an adhesive-free material to form an adhesive-free layer 5. A cavity 7 is formed at the end between the two core units to connect with the external node plate. The core unit is placed inside the constraint unit.

[0032] Core plate unit 3 is installed in the groove of the H-face of the perforated H-beam constraint unit 2, and two core plate units 3 are sandwiched to form a double core plate.

[0033] The connection between the perforated channel steel restraint unit 1 and the perforated H-beam restraint unit 2 is made by high-strength bolts 4. The connection point is the connection between the channel steel flange and the H-beam flange. There are 2 perforated channel steel restraint units 1 and 1 perforated H-beam restraint unit 2. The number of openings in the channel steel flange and the H-beam flange is determined based on the tonnage of the buckling restraint brace.

[0034] The cross-sectional shape of core board unit 3 is rectangular, and the number of core board units 3 is 2.

[0035] The material of the non-adhesive layer 5 is rubber, polyethylene, silicone, or latex.

[0036] The number of stiffening ribs 6 in the elastic connection section is 4.

[0037] The cavity 7 is connected to the external gusset plate by bolts or welding. The gusset plate refers to the plate that connects the buckling brace to the main structure and is not shown in the figure.

[0038] This utility model of an all-steel dual-core prefabricated buckling restraint brace improves upon the shortcomings of traditional buckling restraint braces in terms of production and processing precision, connection convenience, and post-earthquake repair costs, thanks to its all-steel structure, dual-core design, prefabricated production, and high-efficiency vibration reduction.

[0039] The installation method is as follows:

[0040] The buckling restraint brace forms a double core plate with stiffening ribs at both ends and two core plate units 3 to form a whole clamping plate. The clamping plate is externally connected to the buckling restraint brace connecting node plate, and the buckling restraint brace and node plate are welded together by weld.

[0041] Table 1 Performance Parameters

[0042]

[0043] This invention can solve the traditional problems in the production and application of buckling restraint braces, such as the high difficulty in the prefabricated production of large-tonnage buckling restraint braces, the difficulty in ensuring production and processing accuracy, and the low tolerance for connection accuracy between the brace and the main structure. It also features the characteristic that the core unit can be replaced after an earthquake, making it suitable for application in new construction and reinforcement projects.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully-steel double-cores fabricated buckling-restrained brace, characterized in that: The system includes a flange-perforated channel steel constraint unit (1), a flange-perforated H-beam steel constraint unit (2), a core plate unit (3), an unbonded layer (5), and an elastic connecting section stiffening rib (6). The flange-perforated channel steel constraint unit (1) is installed on both sides of the perforated H-beam steel constraint unit (2). The perforated channel steel constraint unit (1) and the perforated H-beam steel constraint unit (2) constitute a constraint unit. The elastic connecting section stiffening rib (6) is installed at both ends of the core plate unit (3). The elastic connecting section stiffening rib (6) is welded to the end of the core plate unit (3) to form a core unit. An unbonded layer (5) is formed on the outer surface of the core unit. A cavity (7) is formed between the two core units at the end to connect with the external node plate. The core unit is placed inside the constraint unit.

2. The fully-steel double-cores assembled buckling-restrained brace according to claim 1, characterized in that: The core plate unit (3) is installed in the groove of the H-face of the perforated H-beam constraint unit (2), and the two core plate units (3) are sandwiched to form a double core plate.

3. The fully-steel double-cores assembled buckling-restrained brace according to claim 2, characterized in that: The connection between the perforated channel steel constraint unit (1) and the perforated H-beam constraint unit (2) is a high-strength bolt 4 connection, and the connection part is the connection between the channel steel flange and the H-beam flange. The number of perforated channel steel constraint units (1) is 2, and the number of perforated H-beam constraint units (2) is 1.

4. The fully-steel double-cores assembled buckling-restrained brace according to claim 2, characterized in that: The core board unit (3) has a rectangular cross-section, and the number of core board units (3) is 2.

5. The fully-steel double-cores assembled buckling-restrained brace according to claim 1, characterized in that: The material of the non-adhesive layer (5) is rubber, polyethylene, silicone or latex.

6. The fully-steel double-cores assembled buckling-restrained brace according to claim 1, characterized in that: The number of stiffening ribs (6) in the elastic connecting section is 4.

7. The fully-steel double-cores assembled buckling-restrained brace according to claim 1, characterized in that: The cavity (7) is connected to the external node plate by bolt connection or welding connection.

Images