Buckling-restrained brace connecting joint capable of eliminating temperature stress influence and connecting process

Abstract

The invention belongs to the technical field of building construction, and discloses a buckling-restrained brace connecting node and a connecting process capable of eliminating temperature stress influence, the buckling-restrained brace connecting node comprises a buckling-restrained brace, a node piece and a sliding structure, a gap is formed between one end of the node piece and the connecting end of the buckling-restrained brace, and the other end of the node piece is connected with a main body structure; the sliding structure comprises a first connecting plate, a second connecting plate and a connecting piece, the side wall of the first connecting plate is connected to the side portion of the joint piece in the first direction, part of the side wall of the second connecting plate is connected to the side portion of the buckling-restrained brace in the first direction, and the other part of the side wall of the second connecting plate is stacked on the first connecting plate. The first connecting plate is provided with a first elliptical hole in the first direction, the second connecting plate is provided with a second elliptical hole in the first direction, one end of the connecting piece sequentially penetrates through the first elliptical hole and the second elliptical hole and is fixed, the temperature stress defect of the inner core unit of the buckling-restrained brace can be avoided, the mechanical property of the brace is guaranteed, and structural potential safety hazards are effectively eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a buckling-restrained brace connection node and a connection process for eliminating the influence of temperature stress. Background Art

[0002] Buckling-restrained brace (BRB), also known as buckling-restrained brace, consists of a brace core unit, a peripheral restraint mechanism, and unbonded material (or an appropriate gap) between the two. Because the brace core unit can yield under tension and compression, and has consistent mechanical properties, it avoids the defect of significant differences in tension and compression bearing capacity of ordinary steel braces, and is widely used in seismic design of various building structures.

[0003] When buckling-restrained braces are used in heavy-duty industrial buildings with steel structures, the buckling-restrained braces are connected to the main structure through node plates, which are connected by direct welding or friction-type high-strength bolts. During the construction of the main structure, the buckling-restrained braces will be deformed due to temperature effects, which will increase defects such as the initial stress of the inner core unit of the buckling-restrained braces, seriously affecting the mechanical properties of the braces and causing safety hazards to the overall structure. Summary of the invention

[0004] The purpose of the present invention is to provide a buckling-restrained brace connection node that eliminates the influence of temperature stress, can ensure the mechanical properties of the support, and effectively eliminate structural safety hazards.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A buckling-restrained brace connection node for eliminating the influence of temperature stress, comprising:

[0007] Buckling-resistance bracing;

[0008] A node member, one end of which has a gap with the connection end of the anti-buckling brace, and one end of which can be welded to the connection end of the anti-buckling brace, and the other end of which is connected to the main structure;

[0009] A sliding structure, the sliding structure includes a first connecting plate, a second connecting plate and a connecting member, the side wall of the first connecting plate is connected to the side of the node member along a first direction, part of the side wall of the second connecting plate is connected to the side of the anti-buckling support along the first direction, the remaining part of the side wall of the second connecting plate is stacked on the first connecting plate, the first connecting plate is provided with a first elliptical hole along the first direction, the second connecting plate is provided with a second elliptical hole along the first direction, at least part of the projection of the first elliptical hole passes through the second elliptical hole, and one end of the connecting member passes through the first elliptical hole and the second elliptical hole in sequence and is fixed.

[0010] Preferably, the buckling-restrained brace connection node for eliminating the influence of temperature stress is provided with two sliding structures, and the two sliding structures are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

[0011] Preferably, one end of the node member is fully penetrated and welded to the connecting end of the buckling-restrained brace.

[0012] Preferably, the cross-sectional shape of the connection end of the anti-buckling brace is cross-shaped, H-shaped, or W-shaped.

[0013] Preferably, the node member, the first connecting plate and the second connecting plate are all made of steel plates.

[0014] Preferably, the first elliptical hole and the second elliptical hole are both cut by laser.

[0015] Preferably, the size of the gap is 3-5 mm.

[0016] Preferably, the connecting member is a bolt.

[0017] Another object of the present invention is to provide a buckling-restrained brace connection process that eliminates the influence of temperature stress, has a simple construction process, and can effectively ensure the quality of the connection node.

[0018] To achieve this object, the present invention adopts the following technical solutions:

[0019] A buckling-restrained brace connection process for eliminating the influence of temperature stress, using the buckling-restrained brace connection node for eliminating the influence of temperature stress, comprises the following steps:

[0020] S1. Connecting the first connecting plate and the second connecting plate through the connecting member;

[0021] S2, adjusting the size of the gap;

[0022] S3. Welding one end of the node member to the connecting end of the buckling-restrained brace.

[0023] Preferably, S2 comprises:

[0024] S21, the main structure undergoes temperature deformation;

[0025] S22, releasing the connecting piece;

[0026] S23, adjusting the position of the connecting member passing through the first elliptical hole and the second elliptical hole.

[0027] Beneficial effects of the present invention:

[0028] A buckling-resistance brace connection node for eliminating the influence of temperature stress provided by the present invention comprises a buckling-resistance brace, a node member and a sliding structure, one end of the node member and the connection end of the buckling-resistance brace have a gap, and one end of the node member can be welded to the connection end of the buckling-resistance brace, the other end of the node member is connected to the main structure, and the sliding structure comprises a first connecting plate, a second connecting plate and a connecting member, the side wall of the first connecting plate is connected to the side of the node member along a first direction, part of the side wall of the second connecting plate is connected to the side of the buckling-resistance brace along the first direction, the rest of the side wall of the second connecting plate is stacked on the first connecting plate, the first connecting plate is provided with a first elliptical hole along the first direction, and the second connecting plate is provided with a first elliptical hole along the first direction. There is a second elliptical hole, at least part of the projection of the first elliptical hole passes through the second elliptical hole, and one end of the connecting piece passes through the first elliptical hole and the second elliptical hole in sequence and is fixed, which can avoid the temperature stress defects in the inner core unit of the anti-buckling support, ensure the mechanical properties of the support, and effectively eliminate the hidden dangers of structural safety; the present invention provides a buckling-resistance support connection process for eliminating the influence of temperature stress, and uses the above-mentioned buckling-resistance support connection node for eliminating the influence of temperature stress, including S1, connecting the first connecting plate and the second connecting plate through a connecting piece; S2, adjusting the size of the gap; S3, welding one end of the node member to the anti-buckling support connection end, the construction process is simple, and the quality of the connection node can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a buckling-restrained brace connection node for eliminating the influence of temperature stress provided by an embodiment of the present invention;

[0030] Figure 2 is a cross-sectional view of a buckling-restrained brace connection node that eliminates the influence of temperature stress provided by an embodiment of the present invention;

[0031] Figure 3 is a structural schematic diagram of a first connecting plate provided in an embodiment of the present invention;

[0032] Figure 4 is a structural schematic diagram of a second connecting plate provided in an embodiment of the present invention;

[0033] Figure 5It is a flow chart of a buckling-restrained brace connection process for eliminating the influence of temperature stress provided by an embodiment of the present invention.

[0034] In the figure:

[0035] 1. Buckling-resisting brace; 2. Node member; 31. First connecting plate; 311. First elliptical hole; 32. Second connecting plate; 321. Second elliptical hole; 33. Connecting member; 10. Gap; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Embodiment 1

[0041] In the prior art, when the anti-buckling brace is used in a heavy-duty industrial plant with a steel structure, the anti-buckling brace is connected to the main structure through a node plate, and the anti-buckling brace and the node plate are connected by direct welding or friction-type high-strength bolt connection. During the construction of the main structure, the main structure will be deformed due to the temperature effect, which will cause an increase in defects such as the initial stress of the support core unit of the anti-buckling brace, seriously affecting the mechanical properties of the support and causing safety hazards to the overall structure.

[0042] Therefore, this embodiment provides a buckling-restrained brace connection node that eliminates the influence of temperature stress, which can avoid the generation of temperature stress defects in the inner core unit of the buckling-restrained brace, ensure the mechanical properties of the brace, and effectively eliminate structural safety hazards.

[0043] See also Figure 1 and Figure 2 A buckling-resistance brace connection node for eliminating the influence of temperature stress comprises a buckling-resistance brace 1, a node member 2 and a sliding structure. The node member 2 is used to connect the buckling-resistance brace 1 and a main structure (not shown in the figure). The sliding structure connects the node member 2 and the buckling-resistance brace 1 and can release the deformation of the main structure components under the action of temperature effects, avoid temperature stress defects in the inner core unit of the buckling-resistance brace 1, ensure the mechanical properties of the support, and effectively eliminate structural safety hazards.

[0044] Optionally, the cross-sectional shape of the connection end of the buckling-resistance brace 1 can be a cross shape, an H shape, a W shape, etc., depending on the bearing capacity.

[0045] Specifically, the node member 2 is plate-shaped and made of steel plate. The shape and size of the node member 2 are adapted to the connection end of the buckling-restrained brace 1 .

[0046] Furthermore, the other end of the node member 2 is connected to the main structure, and one end of the node member 2 is connected to the connecting end of the anti-buckling brace 1 through a sliding structure. There is a gap 10 between one end of the node member 2 and the connecting end of the anti-buckling brace 1. The size of the gap 10 can be adjusted through the sliding structure. When the main structure is deformed under the temperature effect, the deformation can be released by adjusting the size of the gap 10 to prevent the anti-buckling brace 1 from being subjected to greater pressure, thereby avoiding temperature stress defects in the inner core unit of the anti-buckling brace 1.

[0047] Optionally, the size of the gap 10 is 3-5 mm.

[0048] Preferably, the other end of the node member 2 is welded to the main structure.

[0049] Furthermore, when the temperature of the main structure is constant, one end of the node member 2 is welded to the connecting end of the buckling-restrained brace 1, and optionally, full penetration welding is used.

[0050] See also Figure 1-Figure 4 The sliding structure includes a first connecting plate 31, a second connecting plate 32 and a connecting member 33, wherein the side wall of the first connecting plate 31 is connected to the side of the node member 2 along the first direction X, a part of the side wall of the second connecting plate 32 is connected to the side of the buckling-resisting brace 1 along the first direction X, and the remaining part of the side wall of the second connecting plate 32 is stacked on the first connecting plate 31. For the first direction X, please refer to Figure 1 Furthermore, the first connecting plate 31 is provided with a first elliptical hole 311 along the first direction X, the second connecting plate 32 is provided with a second elliptical hole 321 along the first direction X, at least a portion of the projection of the first elliptical hole 311 passes through the second elliptical hole 321, one end of the connecting member 33 passes through the first elliptical hole 311 and the second elliptical hole 321 in sequence and is fixed, and then the node plate and the buckling-resisting brace 1 are connected through the first connecting plate 31 and the second connecting plate 32.

[0051] Through the above arrangement, when the main structure is deformed under the temperature effect, the size of the gap 10 can be adjusted by adjusting the position of the connecting member 33 in the first elliptical hole 311 and the second elliptical hole 321, thereby releasing the deformation and preventing a large pressure on the anti-buckling support 1, thereby avoiding temperature stress defects in the inner core unit of the anti-buckling support 1.

[0052] Specifically, the connecting member 33 is made of high-strength bolts, and its specifications and types are determined according to design requirements.

[0053] Preferably, the buckling-resistance brace connection node for eliminating the influence of temperature stress provided in the present embodiment is provided with two sliding structures, and the two sliding structures are arranged at intervals along the second direction Y, and the second direction Y is perpendicular to the first direction X, so as to improve the connection strength between the node member 2 and the buckling-resistance brace 1.

[0054] Preferably, in this embodiment, the first connecting plate 31 and the second connecting plate 32 are both made of steel plates, and the length of the second connecting plate 32 is greater than that of the first connecting plate 31 .

[0055] Further preferably, the side wall of the first connecting plate 31 is welded to the side of the node member 2 , and part of the side wall of the second connecting plate 32 is welded to the side of the buckling-restrained brace 1 .

[0056] To improve connection accuracy, the first elliptical hole 311 and the second elliptical hole 321 in this embodiment are both formed by laser cutting.

[0057] The present embodiment provides a buckling-resistance brace connection node that eliminates the influence of temperature stress. By setting a first connecting plate 31, a second connecting plate 32 and a connecting member 33, when the main structure is deformed under the temperature effect, the position of the connecting member 33 in the first elliptical hole 311 and the second elliptical hole 321 can be adjusted to adjust the size of the gap 10, thereby releasing the deformation, preventing the buckling-resistance brace 1 from being subjected to greater pressure, and thus avoiding the occurrence of temperature stress defects in the inner core unit of the buckling-resistance brace 1.

[0058] Embodiment 2

[0059] This embodiment provides a buckling-restrained brace connection process that eliminates the influence of temperature stress. By using the above-mentioned buckling-restrained brace connection node that eliminates the influence of temperature stress, the construction process is simple and the quality of the connection node can be effectively guaranteed. In addition, factory processing can be realized to improve construction efficiency.

[0060] See also Figure 5 The embodiment provides a buckling-restrained brace connection process for eliminating the influence of temperature stress, comprising the following steps:

[0061] S1, connecting the first connecting plate 31 and the second connecting plate 32 through the connecting member 33;

[0062] S2, adjusting the size of the gap 10;

[0063] S3, one end of the welded node member 2 is connected to the end of the buckling-restrained brace 1.

[0064] Specifically, in S1, one end of the connector 33 passes through the first elliptical hole 311 and the second elliptical hole 321 in sequence and is fixed, and then the node plate and the buckling-restrained brace 1 are connected through the first connecting plate 31 and the second connecting plate 32 to facilitate the subsequent construction of the main structure.

[0065] S2 includes:

[0066] S21, the main structure produces temperature deformation;

[0067] S22, releasing the connecting member 33;

[0068] S23 , adjusting the position of the connecting member 33 passing through the first elliptical hole 311 and the second elliptical hole 321 .

[0069] Specifically, the limb structure is deformed due to the temperature effect during the construction process. At this time, the connector 33 is unscrewed and the size of the gap 10 between the node member 2 and the anti-buckling support 1 is adjusted, that is, the position of the connector 33 passing through the first elliptical hole 311 and the second elliptical hole 321 is adjusted to release the deformation and prevent greater pressure on the anti-buckling support 1, thereby avoiding temperature stress defects in the inner core unit of the anti-buckling support 1, and further, the connector 33 is tightened to reconnect the node member 2 and the anti-buckling support 1.

[0070] In S3, when the temperature of the main structure is constant, one end of the node member 2 is welded to the connection end of the buckling-restrained brace 1 to improve the connection strength.

[0071] The present embodiment provides a buckling-resistance brace connection process for eliminating the influence of temperature stress. The construction process is simple, and the quality of the connection nodes can be effectively guaranteed, the mechanical properties of the supports can be fully utilized, and potential structural safety hazards can be effectively eliminated. In addition, factory processing can be realized to improve construction efficiency.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A buckling-restrained brace connection node that eliminates the influence of temperature stress, characterized in that: include: Buckling Restraint Bracing (1); A node member (2), one end of the node member (2) and the connection end of the anti-buckling brace (1) having a gap (10), one end of the node member (2) being capable of being welded to the connection end of the anti-buckling brace (1), and the other end of the node member (2) being connected to the main structure; A sliding structure, the sliding structure comprising a first connecting plate (31), a second connecting plate (32) and a connecting member (33), the side wall of the first connecting plate (31) being connected to the side of the node member (2) along a first direction (X), part of the side wall of the second connecting plate (32) being connected to the side of the buckling-resisting brace (1) along the first direction (X), the remaining part of the side wall of the second connecting plate (32) being stacked on the first connecting plate (31), the first connecting plate (31) being provided with a first elliptical hole (311) along the first direction (X), the second connecting plate (32) being provided with a second elliptical hole (321) along the first direction (X), at least part of the projection of the first elliptical hole (311) passing through the second elliptical hole (321), and one end of the connecting member (33) passing through the first elliptical hole (311) and the second elliptical hole (321) in sequence and being fixed.

2. A buckling-restrained brace connection node for eliminating the influence of temperature stress according to claim 1, characterized in that: The buckling-resistance brace connection node for eliminating the influence of temperature stress is provided with two sliding structures, and the two sliding structures are arranged at intervals along a second direction (Y), and the second direction (Y) is perpendicular to the first direction (X).

3. A buckling-restrained brace connection node for eliminating the influence of temperature stress according to claim 1, characterized in that: One end of the node member (2) and the connection end of the anti-buckling brace (1) are fully penetrated and welded.

4. A buckling-restrained brace connection node for eliminating the influence of temperature stress according to claim 1, characterized in that: The cross-sectional shape of the connection end of the anti-buckling brace (1) is cross-shaped, H-shaped, or W-shaped.

5. A buckling-restrained brace connection node for eliminating the influence of temperature stress according to claim 1, characterized in that: The node member (2), the first connecting plate (31) and the second connecting plate (32) are all made of steel plates.

6. A buckling-restrained brace connection node for eliminating the influence of temperature stress according to claim 1, characterized in that: The first elliptical hole (311) and the second elliptical hole (321) are both cut by laser.

7. A buckling-restrained brace connection node for eliminating the influence of temperature stress according to claim 1, characterized in that: The size of the gap (10) is 3-5 mm.

8. The buckling-restrained brace connection node for eliminating the influence of temperature stress according to claim 1, characterized in that: The connecting member (33) is a bolt.

9. A buckling-restrained brace connection process for eliminating the influence of temperature stress, using a buckling-restrained brace connection node for eliminating the influence of temperature stress as claimed in any one of claims 1 to 8, characterized in that: The steps include: S1. Connecting the first connecting plate (31) and the second connecting plate (32) via the connecting member (33); S2, adjusting the size of the gap (10); S3. Welding one end of the node member (2) to the connecting end of the anti-buckling brace (1).

10. A buckling-restrained brace connection process for eliminating the influence of temperature stress according to claim 9, characterized in that: The S2 includes: S21, the main structure undergoes temperature deformation; S22, releasing the connecting member (33); S23, adjusting the position of the connecting member (33) passing through the first elliptical hole (311) and the second elliptical hole (321).

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