CN211341249U - Low yield point buckling restrained brace of high seismic fortification intensity steel construction - Google Patents
Low yield point buckling restrained brace of high seismic fortification intensity steel construction Download PDFInfo
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- CN211341249U CN211341249U CN201922051726.9U CN201922051726U CN211341249U CN 211341249 U CN211341249 U CN 211341249U CN 201922051726 U CN201922051726 U CN 201922051726U CN 211341249 U CN211341249 U CN 211341249U
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- gusset plate
- buckling restrained
- restrained brace
- support
- bucking restraint
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Abstract
The utility model provides a high antidetonation is fortified with strong steel construction and is hanged down yield point bucking restraint and support, including bucking restraint support and gusset plate, the gusset plate sets up respectively in the both ends of gusset plate along horizontal setting, the bucking restraint that two slopes set up is supported, and the both ends of gusset plate respectively with the upper end fixed connection that two bucking restraint supported, the lower extreme that two bucking restraint supported still respectively fixedly connected with gusset plate. The problem that the traditional supporting system cannot meet the requirements is solved. Belongs to the technical field of earthquake resistance.
Description
Technical Field
The utility model relates to a high antidetonation is fortified with strong steel construction and is hanged down yield point buckling restrained brace belongs to antidetonation technical field.
Background
The earthquake brings huge loss to people's life and property, and the country has further increased the input in the field of anti-seismic afterwards, and later revised GB50011-2010 "building antidetonation design Specification" has enlarged the application scope of energy dissipation shock attenuation and shock insulation building.
Buckling restrained brace, also called anti-buckling brace or BRB (bucking restrained brace), the product technology was developed in Japan in 1973 for the first time, and then a group of Japanese scholars successfully developed the earliest wallboard type buckling restrained energy-consuming brace and performed a tension-compression test with different non-adhesive materials; after the northern Ridge earthquake of 1994, the United states also starts to carry out corresponding design research and large-scale tests on the buckling restrained brace system, and the advantages of the brace system compared with other brace systems are analyzed by combining theoretical calculation.
Disclosure of Invention
The utility model provides a high antidetonation is fortified with strong steel construction and is hanged down yield point buckling restrained brace to solve the problem that traditional support system can't satisfy the requirement.
In order to solve the problems, the buckling restrained brace with the high seismic fortification intensity steel structure and the low yield point comprises buckling restrained braces and a gusset plate, wherein the gusset plate is transversely arranged, the two obliquely arranged buckling restrained braces are respectively arranged at two ends of the gusset plate, two ends of the gusset plate are respectively fixedly connected with the upper ends of the two buckling restrained braces, and the lower ends of the two buckling restrained braces are respectively and fixedly connected with the gusset plate.
In the above-mentioned constraint support, the two buckling constraint supports have the same structure, size and inclination angle, and the buckling constraint support and the gusset plate are located in the same plane.
Buckling restrained brace is also called as buckling restrained brace or BRB (bucking restrained brace), buckling phenomenon can be generated when common brace is pressed, and rigidity and bearing capacity are sharply reduced after the brace is pressed and buckled. Under the action of earthquake or wind, the internal force of the support is changed back and forth under the two states of compression and tension. When the support is gradually changed from a buckling state to a tension state, the internal force and the rigidity of the support are close to zero. Therefore, the hysteresis performance of the common support under the action of repeated load is poor.
In order to solve the problems of the common support that the buckling is pressed and the hysteretic performance is poor, a sleeve is arranged outside the support to restrain the buckling of the support, so that the buckling restrained support is formed.
The buckling restrained brace only has the core plate connected with other components, the borne load is borne by the core plate, the outer sleeve and the filling material only restrain the core plate from buckling under compression, and the core plate can be buckled under tension and compression, so that the buckling restrained brace has excellent hysteretic performance. The buckling restrained brace can avoid the defect that the difference of the tension-compression bearing force of a common brace is obvious on one hand, and has the energy consumption capacity of a metal damper on the other hand, and the buckling restrained brace can serve as a fuse in the structure, so that the main body structure is basically in the elastic range. Therefore, the application of the buckling restrained brace can comprehensively improve the seismic performance of the traditional support frame under medium and large earthquakes.
Compared with the prior art, the buckling restrained brace of the utility model increases the lateral stiffness of the structure under small earthquakes, reduces the displacement of the structure under horizontal load, and simultaneously better controls the adverse effect of torsion of the structure; under the condition of heavy earthquake, the buckling restrained brace exerts the energy consumption capability thereof, protects the main body structure and improves the earthquake resistance performance of the whole structure, and the high earthquake-resistant fortification intensity steel structure low yield point buckling restrained brace integrates the detailed design, manufacture and installation of the buckling restrained brace into a whole to form a dragon service, thereby not only ensuring the engineering quality, but also reasonably arranging the construction according to the field conditions and further ensuring the construction period; the high-seismic fortification intensity steel structure low-yield-point buckling restrained brace metal damper has the advantages of being small in structure, early in yield, early in energy consumption, high in lateral stiffness resistance, large in ductility, high in material utilization rate, good in economy, full in hysteresis curve, strong and stable in energy consumption capacity and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
referring to fig. 1, this embodiment provides a low yield point buckling restrained brace of high earthquake-resistant intensity of fortifying steel construction, including buckling restrained brace 1 and gusset plate 2, gusset plate 2 is along horizontal setting, buckling restrained brace 1 that two slopes set up sets up respectively in the both ends of gusset plate 2, and the both ends of gusset plate 2 respectively with two buckling restrained brace 1's upper end fixed connection, two buckling restrained brace 1's lower extreme still respectively fixedly connected with gusset plate 2, two buckling restrained brace 1's structure, size and inclination are the same, and buckling restrained brace 1 and gusset plate 2 are located the coplanar.
The specific working process is as follows:
preparation before installation: the upper and lower beam column nodes connected with the support are checked before the support is installed, and the main checking content comprises deviation of the nodes and a construction drawing and out-of-plane deviation of a node plate in the installation process. And (3) measuring the reserved node on site, and when the deviation exists, correcting the deviation by adopting corresponding measures, correcting the binding of the length of the node plate and then installing the buckling restrained brace.
The finished product supporting member is welded with special lifting lugs (two lifting lugs are arranged along the supporting length), and can be directly penetrated into a sling for lifting, and the lifting equipment is a hoist crane. The face on which the lifting lug is supported faces upwards. The hoisting is that the two ends are lifted at different heights, firstly, the lower end of the support is drawn to reach the installation position, and the upper end of the support can be in place through the temporary support. After the support is in place, measures are adopted for temporary fixing (usually adopting temporary bolts for connecting webs, and the like), after the temporary fixing, the support position is corrected, and the support torsion deviation needs to be particularly noticed. After the correction is finished, butt welding is carried out on the two ends of the support, and in order to avoid the problems of poor field kerf quality and large engineering quantity, the two ends of the buckling restrained brace are provided with kerfs (the two ends of the buckling restrained brace are forbidden to be cut) before leaving a factory; during welding, the lower end node of the support can be welded firstly, and the upper end node is welded after the lower end node is welded. After welding is finished, flaw detection inspection is carried out on the connecting welding seams for supporting and butting the node plates, and the requirement of secondary flaw detection is met.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (2)
1. The utility model provides a low yield point buckling restrained brace of high antidetonation fortification intensity steel construction which characterized in that: including bucking restraint support (1) and gusset plate (2), gusset plate (2) are along horizontal setting, and bucking restraint support (1) that two slopes set up sets up respectively in the both ends of gusset plate (2), and the both ends of gusset plate (2) respectively with the upper end fixed connection of two bucking restraint supports (1), the lower extreme of two bucking restraint supports (1) still respectively fixedly connected with gusset plate (2).
2. The high seismic fortification intensity steel structure low-yield-point buckling restrained brace as claimed in claim 1, is characterized in that: the two buckling restrained braces (1) are identical in structure, size and inclination angle, and the buckling restrained braces (1) and the gusset plate (2) are located on the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922051726.9U CN211341249U (en) | 2019-11-25 | 2019-11-25 | Low yield point buckling restrained brace of high seismic fortification intensity steel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922051726.9U CN211341249U (en) | 2019-11-25 | 2019-11-25 | Low yield point buckling restrained brace of high seismic fortification intensity steel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211341249U true CN211341249U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922051726.9U Active CN211341249U (en) | 2019-11-25 | 2019-11-25 | Low yield point buckling restrained brace of high seismic fortification intensity steel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211341249U (en) |
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2019
- 2019-11-25 CN CN201922051726.9U patent/CN211341249U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Beijing road 563000 in Guizhou province Zunyi city Honghuagang District No. 57 Patentee after: The Third Construction Co.,Ltd. of China Construction Fourth Engineering Bureau Address before: Beijing road 563003 in Guizhou province Zunyi city Honghuagang District No. 57 Patentee before: THE THIRD CONSTRUCTION & ENGINEERING Co. OF CCFED |
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| CP03 | Change of name, title or address |