Temporary fixing clamp for buckling restrained brace and mounting structure
By using buckling constraint support temporary fixing fixtures, the problems of large welding workload and damage to steel plate performance during temporary fixing of buckling constraint support are solved, and efficient and safe construction process and reliable fixing effect are achieved.
Patent Information
- Application Number
- CN202422237238.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The existing temporary fixing methods of buckling constraint support have problems such as large welding workload, many welding times, great impact on the performance of steel plates in the node area, and difficulty in flaw detection.
A buckling constraint supporting temporary fixture is adopted, including a fixing component and a limit anti-detachment assembly, and the groove type and the node area steel plate are connected by bolts to achieve temporary fixation and release internal force before final welding to avoid repeated welding.
It reduces welding workload, protects the performance of steel plates in the node area, simplifies the flaw detection process, improves construction efficiency and safety, and fixtures can be reused.
Smart Images
Figure CN223151397U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of temporary installation of buckling-restrained braces, in particular to a temporary fixing fixture and an installation structure for buckling-restrained braces. Background Art
[0002] Buckling-restrained braces are commonly used damper devices in seismic reduction structures, with excellent tensile and compressive capacities, capable of effectively absorbing seismic energy and effectively protecting the structural safety. To improve the installation efficiency, when the installation conditions are met, the buckling-restrained braces can be installed synchronously with the main structure's beam-columns, that is, after the installation of this section of beam-column is completed, the buckling-restrained braces are hoisted to the corresponding position on the beam side by a tower crane, and are installed in place with the help of auxiliary measures such as chain hoists, and then temporarily fixed. After all the main structures are capped, the fixing measures are opened to release the internal force generated by the accumulation of vertical loads of the braces, the relative positions of the braces and the bracket gusset plates on the steel columns and steel beams are corrected, and then the final welding fixation is carried out.
[0003] Currently, the common temporary fixing method for buckling-restrained braces on construction sites is to use a certain specification of code plates for temporary welding fixation. The method of using code plates to weld to the brackets and the end gusset plates of the braces for temporary fixation of buckling-restrained braces mainly has three disadvantages:
[0004] First, it increases the welding workload outside the main structure; when buckling-restrained braces are set in high-rise buildings, usually the quantity is large. Using welding for temporary fixation, the welding workload is large, energy consumption is high, and the welding fume emission is increased.
[0005] Second, before the final welding, due to the cumulative action of vertical loads on the overall structure, the structural form has changed to a certain extent compared with the initial installation, and the braces have generated a certain internal force. Therefore, it is necessary to cut open the welded parts of the temporary fixing measures to release the stress of the braces, correct the position of the braces, weld the code plates again, and then carry out the final welding of the joints. After the vertical plate of the joint is welded, the code plates are cut off, and the welding of the transverse gusset plates is carried out. Repeated welding-cutting-welding has a certain potential impact on the performance of the steel plates in the joint area.
[0006] Third, the force-bearing welds in the joint area are usually full penetration welds, and it is necessary to carry out flaw detection to ensure that there are no internal defects. Although the code plates are finally cut off, the cutting position is necessarily uneven, and the welding area itself is small, which has a certain limitation on the flaw detection area range. Summary of the Utility Model
[0007] The utility model provides a temporary fixing fixture and an installation structure for buckling-restrained braces to solve the above problems.
[0008] To solve the above technical problems, the utility model adopts the following technical solutions:
[0009] The utility model relates to a temporary fixing fixture for a buckling-restrained brace, which comprises a fixing component and a limiting and anti-disengagement component. The fixing component includes two channel-shaped parts with opposite openings, and the limiting and anti-disengagement component connects the two channel-shaped parts.
[0010] One side surface of the channel-shaped part is provided with a screw rod, and the screw rod penetrates through the side surface of the channel-shaped part and is in threaded cooperation with the channel-shaped part.
[0011] For the temporary fixing fixture for a buckling-restrained brace of the utility model, further, two groups of the screw rods are arranged on the side surface of the channel-shaped part.
[0012] For the temporary fixing fixture for a buckling-restrained brace of the utility model, further, nuts are in threaded cooperation with the screw rods. Two nuts are provided and are respectively located on the inner and outer sides of the channel-shaped part and are fixedly connected with the channel-shaped part.
[0013] For the temporary fixing fixture for a buckling-restrained brace of the utility model, further, a bottom plate is fixedly provided at one end of the screw rod located inside the channel-shaped part.
[0014] For the temporary fixing fixture for a buckling-restrained brace of the utility model, further, the bottom plate is circular.
[0015] For the temporary fixing fixture for a buckling-restrained brace of the utility model, further, the screw rod and the limiting and anti-disengagement component are respectively arranged on opposite side surfaces of the channel-shaped part.
[0016] For the temporary fixing fixture for a buckling-restrained brace of the utility model, further, the limiting and anti-disengagement component includes a first limiting plate and a second limiting plate. One ends of the first limiting plate and the second limiting plate are connected by a limiting and anti-disengagement bolt, and the other ends are respectively fixedly connected with the corresponding channel-shaped parts.
[0017] For the temporary fixing fixture for a buckling-restrained brace of the utility model, further, the limiting and anti-disengagement component is an anti-slip disengagement chain, and the anti-slip disengagement chain connects the two channel-shaped parts.
[0018] An installation structure of the utility model includes a frame column, a frame beam and a buckling-restrained brace. The buckling-restrained brace is connected with the frame column and the frame beam through a fixing fixture.
[0019] For the installation structure of the utility model, further, corbels are respectively provided on the frame column and the frame beam. Transverse stiffening plates are provided on the corbels. A gusset plate is provided at the end of the buckling-restrained brace. The channel-shaped part is clamped outside the transverse stiffening plate and the gusset plate and is fastened by a screw rod.
[0020] Compared with the prior art, the utility model has the following beneficial effects:
[0021] Compared with the currently commonly used temporary fixing measures for welding code plates, by using this fixture, the fixture is closely attached to the steel plate in the joint area by tightening the bolts, and the buckling-restrained brace is temporarily fixed to the steel column and steel beam. Before the final welding of the joint, loosen the bolts to release the internal force generated by the change of load during the construction stage of the brace, and then tighten the bolts again after re-aligning the position for welding. After the vertical fillet weld of the steel plate in the joint area is welded, the fixing components in the fixture can be removed, and then the transverse weld of the steel plate in the joint area can be welded. The whole process does not require welding, saving materials and energy; the performance of the steel plate in the joint area will not be affected by repeated welding and cutting, etc.; there is no influence of cutting surplus height in the joint area, and the joint area is comprehensively detected to ensure the quality of flaw detection work. This fixture has good versatility. By controlling the plate thickness and cross-sectional height of the channel-shaped part, it can be applied to a large range of brace weights and can be reused. In actual construction, this fixture is safe and reliable, reusable, easy to operate, efficient, and has high popularization value.
[0022] The following further describes the present utility model with reference to the accompanying drawings. Description of the Drawings
[0023] Figure 1 It is a schematic structural diagram of the fixing fixture of the present utility model;
[0024] Figure 2 It is a schematic structural diagram of the connection between the channel-shaped part of the present utility model and the first limiting plate;
[0025] Figure 3 It is a schematic structural diagram of the connection between the channel-shaped part of the present utility model and the second limiting plate;
[0026] Figure 4 It is a diagram of the usage state of the fixing fixture of the present utility model;
[0027] Figure 5 It is a partial detail diagram of the installation of the fixing fixture of the present utility model.
[0028] Reference Signs:
[0029] 1. Fixing components; 1.1. Channel-shaped part; 1.2. Screw; 1.3. Nut; 1.4. Base plate; 2. Limiting and anti-disengagement components; 2.1. First limiting plate; 2.2. Second limiting plate; 2.3. Limiting and anti-disengagement bolt; 3. Frame column; 4. Frame beam; 5. Bracket; 6. Transverse stiffening plate; 7. Gusset plate; 8. Buckling-restrained brace. Specific Embodiments
[0030] Refer to Figures 1 - 5 , the present utility model discloses a temporary fixing fixture and installation structure for a buckling-restrained brace.
[0031] Embodiment 1:
[0032] The fixing fixture includes a fixing component 1 and a limiting and anti - detachment component 2. The fixing component 1 includes two channel - shaped parts 1.1 with opposite openings. The cross - section of the channel - shaped part 1.1 is U - shaped. The limiting and anti - detachment component 2 connects the two channel - shaped parts 1.1 into a whole to prevent the two channel - shaped parts 1.1 from separating.
[0033] On the upper flange of the channel - shaped part 1.1, there are screw rods 1.2. Two groups of screw rods 1.2 are arranged at intervals on the upper flange of the channel - shaped part 1.1. The screw rods 1.2 penetrate through the side surface of the channel - shaped part 1.1. There are two nuts 1.3 thread - fitted on the screw rods 1.2. The two nuts 1.3 are located on both sides of the upper flange respectively and are welded and fixed to the upper flange.
[0034] One end of the screw rod 1.2 located inside the channel - shaped part 1.1 is fixedly installed with a bottom plate 1.4. The bottom plate 1.4 is circular. By setting the bottom plate 1.4, the stress position can avoid point contact, making the fixture evenly stressed.
[0035] The limiting and anti - detachment component 2 is installed on the lower flange plate of the channel - shaped part 1.1. It includes a first limiting plate 2.1 and a second limiting plate 2.2. One end of the first limiting plate 2.1 and the second limiting plate 2.2 is connected by a limiting and anti - detachment bolt 2.3 and locked with a nut 1.3, and the other end is fixedly connected to the corresponding channel - shaped part 1.1 respectively. The two channel - shaped parts 1.1 are connected into a whole by the first limiting plate 2.1 and the second limiting plate 2.2.
[0036] Among them, the first limiting plate 2.1 is L - shaped. Corresponding bolt holes are opened at the connecting ends of the first limiting plate 2.1 and the second limiting plate 2.2. The first limiting plate 2.1 and the second limiting plate 2.2 are connected by the limiting and anti - detachment bolt 2.3 passing through the bolt holes.
[0037] The fixture of this application does not need to be welded to the bracket 5 or the support, and is convenient for disassembly and assembly. First, by setting the bottom plate 1.4 at the end of the screw rod 1.2, the stress position can avoid point contact, making the fixture evenly stressed and fitting well with the gusset plate at the connection point. Second, during the operation, a manual wrench is used to tighten the bolt downward, which saves labor for workers. Third, no additional power supply, welding materials, etc. are required during the operation.
[0038] Embodiment Two:
[0039] The difference from Embodiment One is that the limiting and anti - detachment component 2 is an anti - slipping chain, and the anti - slipping chain connects the two channel - shaped parts 1.1.
[0040] Embodiment Three:
[0041] The installation structure of the fixed fixture is applicable to cruciform connection nodes, which includes a frame column 3, a frame beam 4, and a buckling-restrained brace 8 connected between the frame column 3 and the frame beam 4. Corbels 5 are respectively provided on the frame column 3 and the frame beam 4, transverse stiffeners 6 are provided on the corbels 5, a gusset plate 7 is provided at the end of the buckling-restrained brace 8, and two channel-shaped members 1.1 are respectively clamped at both ends and the outside of the transverse stiffener 6 and the gusset plate 7, and a bottom plate 1.4 abuts against the transverse stiffener 6 and the gusset plate 7 and is fastened by a screw 1.2.
[0042] During installation, after the buckling-restrained brace 8 is hoisted in place, the two channel-shaped members 1.1 are respectively clamped on the transverse stiffener 6 and the gusset plate 7. After the position of the fixture is determined, the screw 1.2 is tightened downward so that the bottom plate 1.4 below the screw 1.2 is in close contact with the transverse stiffener 6 and the gusset plate 7 and generates a certain pressure, and then the first limiting plate 2.1 and the second limiting plate 2.2 are connected and fixed by a limiting anti-loosening bolt 2.3.
[0043] The solution of this application does not need to be welded to the corbel 5 and the buckling-restrained brace. Only after the buckling-restrained brace is installed in place, the fixture is installed at the node position like a clip. The transverse stiffener 6 is placed in the middle of the channel-shaped member 1.1, and the screw 1.2 is tightened so that the fixture is clamped with the transverse stiffener 6 and the gusset plate 7, and the buckling-restrained brace can be fixed. Finally, the anti-loosening limiting bolt is tightened. The fixture of this application is convenient for disassembly and installation, does not require welding, saves materials and energy. Before final welding, only the screw 1.2 needs to be loosened, and the relative position of the buckling-restrained brace and the transverse stiffener 6 is corrected, without repeated welding, and it has no impact on the performance of the steel plate in the node area; there is no influence of cutting surplus height in the node area, which ensures the smooth progress of flaw detection work, and the node area is comprehensively detected to ensure quality; the fixture has good versatility. By controlling the plate thickness and section height of the channel-shaped member 1.1, the applicable range of the supported weight is large and it can be reused. In actual construction, the fixture is very safe and reliable and has high popularization value.
[0044] Example 4:
[0045] In a preferred embodiment of this application:
[0046] The channel-shaped member 1.1, the bottom plate 1.4, the first limiting plate 2.1, and the second limiting plate 2.2 are all made of Q235 or Q355 steel, and the screw 1.2 and the limiting anti-loosening bolt 2.3 are 4.8-grade ordinary bolts and their matching nuts 1.3.
[0047] The channel-shaped member 1.1 is cut and made of a steel plate with a thickness of 20 mm, and is welded and assembled by full penetration welds. The upper and lower flange steel plates forming the channel-shaped member 1.1 have specifications of 20X100X180 mm, and the web steel plate has specifications of 20X110X180 mm. Two φ18 mm holes are opened on the upper flange of the channel-shaped member 1.1 for the screw 1.2 to pass through. The hole edge distance is 40 mm, and the center distance between the two holes is 100 mm.
[0048] The screw 1.2 is M16X85 with a length of 85 mm; the nut 1.3 is a matching nut for M16, and they are respectively fixed to the channel-shaped part 1.1 at the opening positions by fillet welding.
[0049] The bottom plate 1.4 is a circular steel plate with a diameter of 50 mm, which is cut and made from a steel plate with a thickness of 6 mm. The bottom plate 1.4 is welded to the end of the screw 1.2 and kept perpendicular to the axis of the screw 1.2.
[0050] The first limiting plate 2.1 and the second limiting plate 2.2 are cut and made from 8-mm-thick steel plates. The first limiting plate 2.1 is L-shaped, with a long side length of 185 mm, a short side length of 160 mm, and a width of 50 mm. The width direction of the short side is welded to the channel-shaped part 1.1. The second limiting plate 2.2 has a length of 160 mm and a width of 50 mm, and its width direction is welded to the channel-shaped part 1.1.
[0051] The first limiting plate 2.1 and the second limiting plate 2.2 are located at the end positions on the opening side of the lower flange of the channel-shaped part 1.1. During installation, they are placed below the joint area to avoid interference with the position of the screw 1.2.
[0052] The limiting anti-loosening bolt 2.3C uses a hexagon head class C bolt connection pair of M12X40. After the fixture is in place, the first limiting plate 2.1 and the second limiting plate 2.2 are connected.
[0053] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.
Claims
1. A buckling-restrained brace temporary fixing fixture, characterized in that: It includes a fixing component (1) and a limiting and anti - detachment component (2). The fixing component (1) includes two channel - shaped parts (1.1) with opposite openings, and the limiting and anti - detachment component (2) connects the two channel - shaped parts (1.1). One side surface of the channel - shaped part (1.1) is provided with a screw rod (1.2), and the screw rod (1.2) penetrates through the side surface of the channel - shaped part (1.1) and is in threaded fit with the channel - shaped part (1.1).
2. The temporary fixing fixture for a buckling-restrained brace according to claim 1, wherein: Two groups of the screw rods (1.2) are arranged on the side surface of the channel - shaped part (1.1).
3. The temporary fixing fixture for a buckling-restrained brace according to claim 1, wherein: Nuts (1.3) are in threaded fit with the screw rods (1.2). Two nuts (1.3) are provided, and are respectively located inside and outside the channel - shaped part (1.1) and are fixedly connected to the channel - shaped part (1.1).
4. A temporary fixing fixture for a buckling-restrained brace according to claim 1, characterized in that: One end of the screw rod (1.2) located inside the channel - shaped part (1.1) is fixedly provided with a bottom plate (1.4).
5. A temporary fixing fixture for a buckling-restrained brace according to claim 4, characterized in that: The bottom plate (1.4) is circular.
6. The temporary fixing fixture for a buckling-restrained brace according to claim 1, characterized in that: The screw rod (1.2) and the limiting and anti - detachment component (2) are respectively arranged on opposite side surfaces of the channel - shaped part (1.1).
7. A temporary fixing fixture for a buckling-restrained brace according to claim 6, characterized in that: The limiting and anti - detachment component (2) includes a first limiting plate (2.1) and a second limiting plate (2.2). One end of the first limiting plate (2.1) and the second limiting plate (2.2) is connected by a limiting and anti - detachment bolt (2.3), and the other ends are respectively fixedly connected to the corresponding channel - shaped parts (1.1).
8. A temporary fixing fixture for a buckling-restrained brace according to claim 7, characterized in that: The limiting and anti - detachment component (2) is an anti - slipping chain, and the anti - slipping chain connects the two channel - shaped parts (1.1).
9. An installation structure, comprising a frame column (3), a frame beam (4) and a buckling-restrained brace (8), characterized in that: The buckling - restrained brace (8) is connected to the frame column (3) and the frame beam (4) through the fixing fixture according to any one of claims 1 - 8.
10. The mounting structure according to claim 9, characterized in that: Corbel (5) is respectively provided on the frame column (3) and the frame beam (4). A transverse stiffener (6) is provided on the corbel (5). A gusset plate (7) is provided at the end of the buckling - restrained brace (8). The channel - shaped part (1.1) is clamped outside the transverse stiffener (6) and the gusset plate (7) and is fastened by the screw rod (1.2).