CN220580187U

CN220580187U - Connection structure of BRB buckling restrained brace and concrete frame structure node

Info

Publication number: CN220580187U
Application number: CN202321888111.1U
Authority: CN
Inventors: 吕勇奇; 邢军; 姜耀飞; 雷森; 李伟龙
Original assignee: Shaanxi Construction Engineering Group Co ltd First Building
Current assignee: Shaanxi Construction Engineering Group Co ltd First Building
Priority date: 2023-07-18
Filing date: 2023-07-18
Publication date: 2024-03-12
Anticipated expiration: 2033-07-18

Abstract

The utility model relates to the technical field of building structures, in particular to a connection structure of a BRB buckling restrained brace and a concrete frame structure node, which comprises a first steel concrete frame and a second steel concrete frame, wherein two BRB buckling restrained braces are arranged between the first steel concrete frame and the second steel concrete frame, and fixing blocks are fixedly arranged on the left side and the right side of each BRB buckling restrained brace; the device can realize the promotion of intensity, stability and shock resistance of node through setting up BRB buckling restrained brace and the connection structure of first steel concrete frame and second steel concrete frame, and this connection structure has simple, reliable and economic characteristics, is applicable to the node design and the construction of various concrete frame structures.

Description

Connection structure of BRB buckling restrained brace and concrete frame structure node

Technical Field

The utility model relates to the technical field of building structures, in particular to a connection structure of a BRB buckling restrained brace and a concrete frame structure node.

Background

In the field of building structure design and construction, concrete frame structures are widely used in various building types, such as residential, commercial and industrial buildings, the concrete frame structures are composed of columns, beams, floors and the like, nodes are key parts for connecting different structural components, and the design and connection structure of the nodes are critical to the stability and performance of the whole structure;

the traditional frame structure node connection structure usually adopts a steel bar welding or bolt connection mode, and the mode needs additional labor and material cost and takes longer construction time;

secondly, because the concrete material can be deformed such as shrinkage, creep deformation and the like in the long-term use process, the traditional node connection structure is difficult to meet the stress change caused by structural deformation and the interfacial shear stress between the concrete and the steel bars;

therefore, we propose a connection structure of a BRB buckling restrained brace and a concrete frame structure node, so as to solve the problems that the frame structure node connection structure of the device usually adopts a steel bar welding or bolt connection mode, additional labor and material costs are required, the construction time is long, and the traditional node connection structure is difficult to meet the stress change caused by structural deformation and the interface shear stress between the concrete and the steel bar.

Disclosure of Invention

The utility model aims to provide a connection structure of a BRB buckling restrained brace and a concrete frame structure node, which aims to solve the problems that in the prior art, the frame structure node connection structure is usually welded by steel bars or connected by bolts, extra labor and material cost are required, the construction time is long, and the traditional node connection structure is difficult to meet the stress change caused by structural deformation and the interface shear stress between the concrete and the steel bars.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a connection structure of a BRB buckling restrained brace and a concrete frame structure node comprises a first steel concrete frame and a second steel concrete frame;

two BRB buckling restrained braces are arranged between the first steel concrete frame and the second steel concrete frame, and fixing blocks are fixedly installed on the left side and the right side of each BRB buckling restrained brace.

Preferably, the two BRB buckling restrained braces comprise sleeves, core materials and nodes, and the core materials are embedded in the sleeves.

Preferably, the upper end and the lower end of the core material are fixedly provided with two nodes, and the nodes are symmetrically arranged with the nodes.

Preferably, the sleeve is internally provided with a cross groove, the lengths of the two core materials are consistent with the length of the core material, and the length of the core material are smaller than the length of the cross groove.

Preferably, bolt holes are formed in the tops of the two fixing blocks, and bolts are fixedly embedded into the bolt holes formed in the two fixing blocks.

Preferably, the penetrating fixed blocks of the two bolts are respectively embedded into the first steel concrete frame and the second steel concrete frame.

Preferably, the outer surface of the core material is fixedly provided with an unbonded layer, and the unbonded layer is fixed between two nodes.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the connection structure of the BRB buckling restrained brace and the concrete frame structure node, the core material is arranged, the sleeve can be embedded into the sleeve through the cross groove, concrete can be poured into a gap between the core material and the BRB buckling restrained brace and the concrete frame structure node, and a non-adhesive layer material is adopted on the contact surface of the concrete and the core material, so that the adhesive property and the shearing resistance of an interface are improved, after the connection structure is completed, the node is tested and detected, and the performance and the stability of the connection structure are verified.

2. Secondly, the BRB buckling restrained brace and the concrete frame structure node are connected together by adopting a fixing block mode of fixing the left side and the right side of the BRB buckling restrained brace to ensure the reliability and compactness of connection through setting the connection mode of the BRB buckling restrained brace and the first steel concrete frame and the second steel concrete frame node, and the connection considers the force transmission effect, the connection detachability and the earthquake resistance.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of a BRB buckling restrained brace construction of the present utility model;

FIG. 3 is a schematic diagram of the core structure of the present utility model;

FIG. 4 is a schematic view of the sleeve structure of the present utility model;

in the figure: 1. a first steel concrete frame; 2. a second steel concrete frame; 3. BRB buckling restrained brace; 301. a sleeve; 302. a core material; 303. a node; 304. a cross groove; 305. no adhesive layer; 4. a fixed block; 401. and (5) a bolt.

Detailed Description

Referring to fig. 1 to 4, in an embodiment of the present utility model;

example 1: a connecting structure of a BRB buckling restrained brace and a concrete frame structure node comprises a first steel concrete frame 1 and a second steel concrete frame 2;

two BRB buckling restrained braces 3 are arranged between the first steel concrete frame 1 and the second steel concrete frame 2, and fixing blocks 4 are fixedly arranged on the left side and the right side of each BRB buckling restrained brace 3;

the two BRB buckling restrained braces 3 comprise a sleeve 301, a core material 302 and a node 303, wherein the core material 302 is embedded in the sleeve 301, the two nodes 303 are fixedly arranged at the upper end and the lower end of the core material 302, the nodes 303 and the nodes 303 are symmetrically arranged, a cross groove 304 is formed in the sleeve 301, the lengths of the two core materials 302 are consistent with the lengths of the core materials 302, and the lengths of the core materials 302 and the core materials 302 are smaller than the lengths of the cross groove 304;

the BRB buckling restrained brace 3 adopts BRB with high ductility and strength as a main brace for connecting nodes, the BRB buckling restrained brace 3 comprises a core material 302 of the inner core, a sleeve 301 of an outer pipe and end connectors of a node 303, the core material 302 of the inner core can buckle under tension or compression, so that energy is absorbed, the outer pipe material of the sleeve 301 plays a role in restraining and protecting the core material 302, and the node 303 is used for a node of concrete;

in order to ensure the reliability and compactness of the connection, the BRB buckling restrained brace 3 is connected with the concrete nodes by adopting a fixed block 4 mode fixedly installed at the left side and the right side of the BRB buckling restrained brace 3, and the connection considers the force transmission effect, the connection detachability and the earthquake resistance;

through the inside that core 302 can imbed sleeve 301 through cross groove 304, can pour the gap between the two with the concrete, adopt no tie coat 305 material on the contact surface of concrete and core 302 to improve the bonding performance and the shearing performance of interface, after accomplishing the connection structure, test and detect node 303, verify connection structure's performance and stability.

Example 2: as can be seen by referring to fig. 2 to 4 of the specification, embodiment 2 differs from embodiment 1 in that:

bolt holes are formed in the tops of the two fixing blocks 4, bolts 401 are embedded and fixed in the bolt holes formed in the two fixing blocks 4, and penetrating fixing blocks 4 of the two bolts 401 are respectively embedded in the first steel concrete frame 1 and the second steel concrete frame 2;

aiming at the problems of shear force transmission and shear stress of a concrete-steel bar interface in a concrete node, reinforcing measures are taken by adopting a mode of a fixed block 4 and a bolt 401 to improve the shear resistance and interface bonding performance of a connecting part, and proper shear force transmission measures are arranged in the concrete node to increase the shear bearing capacity of the node;

through the above embodiment, the strength, stability and anti-seismic performance of the node can be improved based on the connection structure of the BRB buckling restrained brace 3 and the first steel concrete frame 1 and the second steel concrete frame 2, and the connection structure has the characteristics of simplicity, reliability and economy, is suitable for node design and construction of various concrete frame structures, and can be adjusted and optimized according to specific design requirements and engineering requirements.

Claims

1. A connecting structure of a BRB buckling restrained brace and a concrete frame structure node comprises a first steel concrete frame (1) and a second steel concrete frame (2);

the steel-concrete bending-restrained brace is characterized in that two BRB bending-restrained braces (3) are arranged between the first steel-concrete frame (1) and the second steel-concrete frame (2), and fixing blocks (4) are fixedly arranged on the left side and the right side of each BRB bending-restrained brace (3);

the two BRB buckling restrained braces (3) comprise sleeves (301), core materials (302) and nodes (303), and the core materials (302) are embedded in the sleeves (301);

the inner part of the sleeve (301) is provided with cross grooves (304), the lengths of the two core materials (302) are consistent with the length of the core materials (302), and the lengths of the core materials (302) and the core materials (302) are smaller than the length of the cross grooves (304);

an adhesive-free layer (305) is fixedly arranged on the outer surface of the core material (302), and the adhesive-free layer (305) is fixedly arranged between the two nodes (303).

2. The connection structure of a BRB buckling restrained brace and a concrete frame structure node according to claim 1, wherein: two nodes (303) are fixedly arranged at the upper end and the lower end of the core material (302), and the nodes (303) are symmetrically arranged.

3. The connection structure of a BRB buckling restrained brace and a concrete frame structure node according to claim 1, wherein: bolt holes are formed in the tops of the two fixing blocks (4), and bolts (401) are embedded and fixed in the bolt holes formed in the two fixing blocks (4).

4. A BRB buckling restrained brace and concrete frame structure joint connection structure according to claim 3, wherein: the penetrating fixed blocks (4) of the two bolts (401) are respectively embedded into the first steel concrete frame (1) and the second steel concrete frame (2).