An easily repairable buckling-restrained energy dissipation bracing structure

Abstract

An easily repairable buckling-restrained energy dissipation bracing structure, comprising a rigid bracing and a semi-rigid energy dissipation bracing; both ends of the rigid bracing and the semi-rigid energy dissipation bracing are provided with flanges. A connecting inner tube is coaxially fixed on one flange end of the rigid bracing. The semi-rigid energy dissipation bracing is provided with an inner cavity matching the outer diameter of the connecting inner tube. The other end of the rigid bracing is fixed on a node at one end of the steel frame through a flange. The rigid bracing is inserted into the inner cavity of the semi-rigid energy dissipation bracing through the connecting inner tube, and the rigid bracing and the semi-rigid energy dissipation bracing are fixedly connected through flanges. The other end of the semi-rigid energy dissipation bracing is connected to a node at the other end of the steel frame through a flange. The present invention greatly improves the seismic energy dissipation capacity of the frame, and only needs to replace the energy dissipation element for repair after an earthquake, and is more economical than the conventional triple-steel-pipe buckling-restrained bracing.

Description

Technical Field

[0001] The invention belongs to the field of building structures, and particularly relates to an easily-repaired buckling-restrained energy-dissipating bracing structure. Background Art

[0002] The steel frame structure is a very commonly used structural form in structural buildings. To improve the bearing capacity and lateral stiffness of the frame structure, increase the building height of the structure, and avoid excessive increase in the beam and column cross-sections and the corresponding steel consumption, a frame-bracing structure formed by arranging a certain number of braces along the structural height based on the frame structure is an economical and effective commonly used lateral force-resistant structural system. However, although ordinary braces (the cross-sectional forms of ordinary braces include single channel steel, single angle steel, double angle steel, double channel steel, H-shaped steel, box-section steel, steel pipe) can effectively improve the lateral stiffness of the frame, ordinary braces generally buckle in the elastic stage. Once the brace buckles, the bearing capacity of the brace will drop significantly, and the deformation capacity after the material yields cannot be fully utilized, with poor energy-dissipating capacity, which is not conducive to the seismic energy-dissipating design of the structure. And the conventional triple-steel-pipe buckling-restrained energy-dissipating brace is uneconomical and has a large steel consumption. Summary of the Invention

[0003] The invention provides an easily-repaired buckling-restrained energy-dissipating bracing structure that can greatly improve the seismic energy-dissipating capacity of the frame and has a clear failure location of the brace.

[0004] To achieve the above object, the technical solution adopted by the invention is:

[0005] An easily-repaired buckling-restrained energy-dissipating bracing structure, comprising a rigid brace 1 and a semi-rigid energy-dissipating brace 2; characterized in that connectors are provided at both ends of the rigid brace 1 and the semi-rigid energy-dissipating brace 2. A connecting inner pipe 3 is coaxially fixed on the connector end of one end of the rigid brace 1. The semi-rigid energy-dissipating brace 2 is provided with an inner cavity matching the outer diameter of the connecting inner pipe 3. The other end of the rigid brace 1 is fixed to a node 10 at one end of the steel frame through a connector. The rigid brace 1 is inserted into the inner cavity of the semi-rigid energy-dissipating brace 2 through the connecting inner pipe 3, and the rigid brace 1 and the semi-rigid energy-dissipating brace 2 are further connected and fixed through connectors. The length of the connecting inner pipe 3 is shorter than the length of the inner cavity of the semi-rigid energy-dissipating brace 2. The other end of the semi-rigid energy-dissipating brace 2 is connected to a node 9 at the other end of the steel frame through a connector. The rigid brace 1 is inserted into the semi-rigid energy-dissipating brace 2 through the connecting inner pipe 3

[0006] In this embodiment, the length of the connecting inner pipe 3 is 1 - 2 cm shorter than the length of the inner cavity of the semi-rigid energy-dissipating brace 2.

[0007] In this embodiment, the connectors are connected by high-strength bolts 9.

[0008] In this embodiment, a thickened area 4 is provided at the end of the connecting inner tube 3. The difference between the outer diameter of the thickened area 4 and the inner diameter of the semi-rigid energy-dissipating support 2 is not greater than 0.5 mm, and the outer diameter of the other part of the connecting inner tube 3 is 2-3 mm smaller than the inner diameter of the semi-rigid energy-dissipating support 2.

[0009] In this embodiment, lubricating oil is applied to the outside of the thickened area 4, and the length of the thickened area 4 is not less than the outer diameter of the connecting inner tube 3.

[0010] In this embodiment, steel rings 6 are welded to the two ends of the semi-rigid energy-dissipating support 2 and the rigid support 1 as connecting members, and stiffening plates 7 for strengthening rigidity are provided between the steel rings 6 and the semi-rigid energy-dissipating support 2 and the rigid support 1.

[0011] In this embodiment, eight-shaped through holes 5 are uniformly formed in the outer wall of the semi-rigid energy-dissipating support 2 along the axial direction.

[0012] In this embodiment, the connecting member is a flange.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. This support structure is composed of a rigid support 1 and a semi-rigid energy-dissipating support 2, and is convenient to install;

[0015] 2. When the external force exceeds the limit of the support structure, through the active destruction of the semi-rigid energy-dissipating support, it is prevented that the support main body and the two end nodes are damaged;

[0016] 3. After the semi-rigid energy-dissipating support is damaged, only the semi-rigid energy-dissipating support needs to be replaced or repaired, and the maintenance efficiency is high and the cost is low; Description of the Drawings

[0017] Fig. 1(a) is a sample drawing of a square steel tube in an embodiment of the present invention.

[0018] Fig. 1(b) is an enlarged view of part A in Fig. 1(a).

[0019] Figure 2 is the elevation view of the support combination.

[0020] Figure 3 is the bottom view of the support combination.

[0021] Figure 4 is the axonometric view of the support combination.

[0022] In the drawings, 1 - rigid support; 2 - semi-rigid energy-dissipating support; 3 - connecting inner tube; 4 - end thickened area; 5 - through hole; 6 - steel ring; 7 - stiffening plate; 8 - high-strength bolt; 9 - other end node of the steel frame; 10 - one end node of the steel frame. Detailed Embodiments

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] As shown in FIGS. 1(a), 1(b), Figure 2 , Figure 3 , Figure 4 a repairable and buckling-resistant energy dissipation bracing structure includes a rigid bracing 1 and a semi-rigid energy dissipation bracing 2; flanges are provided at both ends of the rigid bracing 1 and the semi-rigid energy dissipation bracing 2. A connecting inner tube 3 is coaxially fixed on one flange end of the rigid bracing 1. An inner cavity matching the outer diameter of the connecting inner tube 3 is provided in the semi-rigid energy dissipation bracing 2. The other end of the rigid bracing 1 is fixed on a node 10 at one end of the steel frame through a flange. The rigid bracing 1 is inserted into the inner cavity of the semi-rigid energy dissipation bracing 2 through the connecting inner tube 3, and one end of the rigid bracing 1 and the semi-rigid energy dissipation bracing 2 are connected and fixed through a flange. The length of the connecting inner tube 3 is 1-2 cm shorter than the length of the inner cavity of the semi-rigid energy dissipation bracing 2. The other end of the semi-rigid energy dissipation bracing 2 is connected to a node 9 at the other end of the steel frame through a flange, and the flanges are connected by high-strength bolts 8.

[0025] A thickening area 4 is provided at the end of the connecting inner tube 3. The difference between the outer diameter of the thickening area 4 and the inner diameter of the semi-rigid energy dissipation bracing 2 is not more than 0.5 mm. Lubricating oil is applied to the outside of the thickening area 4. The outer diameter of other parts of the connecting inner tube 3 is 2-3 mm smaller than the inner diameter of the semi-rigid energy dissipation bracing 2. The length of the thickening area 4 is not less than the outer diameter of the connecting inner tube 3.

[0026] Steel rings 6 are welded to the ends of both ends of the semi-rigid energy dissipation bracing 2 and the rigid bracing 1 as flanges, and stiffening plates 7 are provided between the steel rings 6 and the semi-rigid energy dissipation bracing 2 and the rigid bracing 1 to strengthen rigidity.

[0027] Eight-shaped through holes 5 are uniformly formed axially on the outer wall of the semi-rigid energy dissipation bracing 2.

[0028] The content clarified in the above embodiments should be understood that these embodiments are only used to illustrate the present invention more clearly, rather than to limit the scope of the present invention. After reading the present invention, various equivalent modifications made by those skilled in the art to the present invention all fall within the scope defined by the appended claims of this application.

Claims

1. An easily repairable buckling-restrained energy dissipation support structure, comprising a rigid support (1) and a semi-rigid energy dissipation support (2); characterized in that, Both ends of the rigid support (1) and the semi-rigid energy-dissipating support (2) are provided with connecting members. A connecting inner tube (3) is coaxially fixed on one end connecting member end of the rigid support (1). The semi-rigid energy-dissipating support (2) is provided with an inner cavity matching the outer diameter of the connecting inner tube (3). The other end of the rigid support (1) is fixed on one end node (10) of the steel frame through a connecting member. The rigid support (1) is inserted into the inner cavity of the semi-rigid energy-dissipating support (2) through the connecting inner tube (3), and the rigid support (1) and the semi-rigid energy-dissipating support (2) are further connected and fixed through connecting members. The length of the connecting inner tube (3) is shorter than the length of the inner cavity of the semi-rigid energy-dissipating support (2). The other end of the semi-rigid energy-dissipating support (2) is connected to the other end node (9) of the steel frame through a connecting member; the connecting member is a flange. The length of the connecting inner tube (3) is 1 - 2 cm shorter than the length of the inner cavity of the semi-rigid energy-dissipating support (2). The end of the connecting inner tube (3) is provided with a thickening area (4). The difference between the outer diameter of the thickening area (4) and the inner diameter of the semi-rigid energy-dissipating support (2) is not more than 0.5 mm. The outer diameter of the other part of the connecting inner tube (3) is 2 - 3 mm smaller than the inner diameter of the semi-rigid energy-dissipating support (2); Lubricating oil is smeared on the outside of the thickening area (4), and the length of the thickening area (4) is not less than the outer diameter of the connecting inner tube (3).

2. The easily repairable buckling-restrained energy dissipation support structure according to claim 1, characterized in that, The connecting members are connected by high-strength bolts (8).

3. The easily repairable buckling-restrained energy dissipation support structure according to claim 1, characterized in that, Steel rings (6) are welded on the two ends of the semi-rigid energy-dissipating support (2) and the rigid support (1) as connecting members. Stiffening plates (7) for strengthening rigidity are provided between the steel rings (6) and the semi-rigid energy-dissipating support (2) and the rigid support (1).

4. The easily repairable buckling-restrained energy dissipation support structure according to claim 1, characterized in that, Eight-shaped through holes (5) are uniformly formed in the axial direction on the outer wall of the semi-rigid energy-dissipating support (2).

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