CN220167216U - Energy dissipation beam type steel frame beam column node easy to repair - Google Patents
Energy dissipation beam type steel frame beam column node easy to repair Download PDFInfo
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- CN220167216U CN220167216U CN202321559386.0U CN202321559386U CN220167216U CN 220167216 U CN220167216 U CN 220167216U CN 202321559386 U CN202321559386 U CN 202321559386U CN 220167216 U CN220167216 U CN 220167216U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 120
- 239000010959 steel Substances 0.000 title claims abstract description 120
- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 34
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 description 8
- 239000004033 plastic Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 230000003313 weakening effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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Abstract
The utility model discloses an energy dissipation beam type steel frame beam column node easy to repair, which solves the defects that a beam Duan Suxing is excessively deformed under the action of an earthquake by a beam flange or a web plate of a steel structure, the energy dissipation capacity of the node is not strong, and the node is not easy to repair after the earthquake, and realizes the purposes that the steel frame structure is collapse resistant, can be quickly repaired after the earthquake, and has low repair cost, and the concrete scheme is as follows: the utility model provides an easy prosthetic energy dissipation beam type steel frame beam column node, includes girder steel and buckling restrained brace, the girder steel upper and lower both sides are provided with two convex breach respectively, convex breach sets up in the middle of the girder steel, can dismantle on the convex breach and be connected with buckling restrained brace.
Description
Technical Field
The utility model relates to the technical field of energy dissipation and shock absorption of building steel frame structures, in particular to an energy dissipation beam type steel frame beam column node easy to repair.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The steel frame structure is a common structural form in building steel structures. Under the action of an earthquake, the beam-column joints of the steel frame are easy to generate brittle fracture due to concentrated and complex stress, so that the structure collapses, and according to the design thought of 'Jiang Zhu weak beams' and 'strong joint weak section', the damage of the beam-column joints or the columns is the least expected damage mode, so that researchers at home and abroad usually weaken the beam sections at a certain distance from the joints to ensure the safety of the joints and the columns, reduce the local rigidity of the beams, such as weakening the beam flanges or weakening the holes of the beam webs, so that the plastic hinges of the joints move outwards, under the action of the earthquake, the plastic hinges occur at the weakened positions of the beam sections, and the yield and even damage occur at the weakened positions of the beam sections to consume earthquake energy, thereby avoiding the damage of the columns or the beam-column joints.
However, although the beam flange or web weakening type node effectively avoids the damage of the column or the beam column node, under the rare earthquake action, the beam Duan Suxing deforms seriously, so that the damage cannot be repaired, the whole Liang Jibu is replaced economically, the construction is difficult, the energy dissipation capacity of the beam is limited, and the structure cannot effectively resist the earthquake action.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide an energy dissipation beam type steel frame beam column node which is easy to repair, solves the defects that a beam Duan Suxing of a steel structure beam flange or a web plate weakened type node is too large in deformation under the action of an earthquake, the energy dissipation capacity of the node is not strong, and the repairing is difficult to repair after the earthquake, and achieves the purposes of collapse resistance, quick repairing after the earthquake and low repairing cost of the steel frame structure.
In order to achieve the above object, the present utility model is realized by the following technical scheme:
the utility model provides an easy prosthetic energy dissipation beam type steel frame beam column node, includes girder steel and buckling restrained brace, the girder steel upper and lower both sides are provided with two convex breach respectively, convex breach sets up in the middle of the girder steel, can dismantle on the convex breach and be connected with buckling restrained brace.
Further, the circular arc-shaped notch is a circular arc which is bilaterally symmetrical.
Further, the steel beam is connected to the column flange of the H-shaped steel column.
Further, rib plates are welded on two sides of the circular arc-shaped notch, and the rib plates are perpendicular to the steel beam.
Further, the steel beam is an H-shaped steel beam, and the rib plates are perpendicular to the beam flanges of the steel beam.
Further, the buckling restrained brace comprises a steel core and a rectangular hollow restrained steel pipe sleeved on the steel core, and high-strength mortar is filled in a gap between the steel core and the rectangular hollow restrained steel pipe.
Further, the steel core comprises an energy dissipation section and connecting plates, the connecting plates are arranged on two sides of the buckling restrained brace, and the connecting plates are connected to the beam flanges through bolts.
Further, the energy dissipation section of the connecting plate is connected with the connecting plate through a conversion section, and the conversion section is inclined towards the direction of the energy dissipation section.
Further, the chord length of the two ends of the circular arc-shaped notch is 1-1.5 times of the height of the steel beam.
Further, the depth of the circular arc-shaped notch is 1/4-1/3 of the height of the steel beam.
The beneficial effects of the utility model are as follows:
1) According to the beam column node of the energy dissipation steel frame structure, the arc-shaped notch is formed in the steel beam, the cross-section size of the beam is weakened, the beam plastic region is formed at the arc-shaped notch and far away from the joint of the beam column, the linear buckling restrained brace is arranged at the arc-shaped notch of the steel beam, the load on the beam is shared, the linear buckling restrained brace is used as a replaceable damage element, the seismic energy is dissipated through plastic deformation of a steel core of the buckling restrained brace under the action of an earthquake, the safety of a main structure is ensured, the failed buckling restrained brace is replaced after the earthquake, the functional recovery of the node is realized, the defects that the deformation of a beam Duan Suxing of a flange or a web plate weakened type node of the steel structure is overlarge under the action of the earthquake, the energy dissipation capability of the node is not strong, and the restoration is difficult after the earthquake are realized, and the purposes of collapse resistance, quick restoration after the earthquake and low restoration cost are realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic illustration of a structure of an energy dissipating beam steel frame beam column node that is susceptible to repair in accordance with one or more embodiments of the present utility model.
FIG. 2 is a schematic view of a steel beam structure of an energy dissipating beam steel frame beam column node that is susceptible to repair in accordance with one or more embodiments of the present utility model.
FIG. 3 is a schematic view of an anti-buckling restrained brace of an energy-dissipating beam-type steel frame beam-column joint being susceptible to repair according to one or more embodiments of the present utility model.
In the figure: the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustration is only schematic.
Wherein: 1.H steel column 2, steel beam 3, buckling restrained brace 4, rib plate 5, high-strength bolt 6, beam web 7, arc notch 8, beam flange 9, first bolt hole 10, connecting plate 11, second bolt hole 12, energy dissipation section 13, restrained steel pipe 14 and conversion section.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
Example 1
The utility model provides an easy prosthetic energy dissipation beam type steel frame beam column node, is shown as fig. 1, includes girder steel 2 and buckling restrained brace 3, and girder steel upper and lower both sides are provided with two convex breach 7 respectively, and the convex breach sets up in the middle of the girder steel, and the shape of convex breach bilateral symmetry is provided with buckling restrained brace on the convex breach.
The arc-shaped notch 7 is arranged on the steel beam, so that the cross section size of the beam is weakened, a beam plastic region is arranged at the arc-shaped notch and is far away from the joint of the beam and the column, the linear buckling restrained brace is arranged at the arc-shaped notch, the load on the beam with the weakened cross section is shared and weakened, the linear buckling restrained brace is used as a replaceable damage element, the seismic energy is dissipated through plastic deformation of a steel core of the buckling restrained brace under the action of an earthquake, the safety of a main structure is ensured, the functional recovery of a node is realized, the defects that the deformation of a beam Duan Suxing is overlarge under the action of the earthquake of a flange or a web plate of the steel structure, the energy dissipation capability of the node is not strong, and the beam is not easy to repair after the earthquake are overcome, and the purposes of collapse resistance of the steel frame structure, quick repair after the earthquake and low repair cost are realized.
Specifically, under the normal use condition or small shock effect, the buckling restrained brace only elastically deforms, and the buckling restrained brace is not damaged; under the action of the middle earthquake, the buckling restrained brace is subjected to reciprocating plastic deformation, most of energy at the weakened part of the beam section is consumed, the beam column and the main body structure are kept in an elastic state, no damage occurs, and the buckling restrained brace can be replaced after the earthquake, so that quick repair can be realized; under the action of large earthquake, the buckling restrained brace is firstly subjected to plastic damage before a beam column, so that the structure is ensured not to collapse, and the safety of the main body structure is further ensured.
The chord of the arc-shaped notch is too short, and the stress effect of the buckling restrained brace cannot be fully exerted if the notch is too shallow; the chord of the arc-shaped notch is too long, and the notch is too deep, so that the cross section of the beam is easy to deform and unstably. Therefore, the chord length of the two ends of the circular arc-shaped notch is set to be 1-1.5 times of the height of the steel beam, and the depth of the circular arc-shaped notch is set to be 1/4-1/3 of the height of the steel beam.
As shown in fig. 1, the steel frame beam column node further comprises an H-shaped steel column, the steel beam is connected to the column flange of the H-shaped steel column, and specifically, the H-shaped steel column is welded with the steel beam.
The rib plates 4 are welded on two sides of the arc-shaped notch and perpendicular to the steel beam, so that local instability of the beam flange and the web plate at the weak point of the steel beam is prevented, and the stability and the torsion resistance of the beam are improved.
The girder steel is H shaped steel girder, be provided with beam web 6 in the middle of the H shaped steel girder, beam web upper and lower both sides are provided with beam flange 8, and the floor is perpendicular to beam flange, i.e. floor, beam flange and girder steel's beam web mutually perpendicular.
As shown in fig. 3, the buckling restrained brace comprises a steel core and a rectangular hollow restrained steel pipe 13 sleeved on the steel core, high-strength mortar is filled in a gap between the steel core and the rectangular hollow restrained steel pipe, the steel core comprises a horizontal energy dissipation section 12 and a connecting plate 10, the energy dissipation section is a horizontal steel plate, two sides of the energy dissipation section are connected with conversion sections 14, and the conversion sections are inclined steel plates.
The opposite side of changeover portion is connected with the connecting plate, the connecting plate is horizontally square connecting plate, the width of connecting plate is greater than the width of energy dissipation section steel sheet, make the width of changeover portion steel sheet reduce gradually by the connecting plate to the energy dissipation section, thereby energy dissipation section cross-section stress is biggest when making buckling restrained brace atress, the relative position between energy dissipation section and the rectangular cavity constraint steel pipe has been fixed simultaneously, be provided with a plurality of second bolt holes 11 on the connecting plate, be provided with a plurality of first bolt holes 9 on the beam flange, the position of first bolt hole and second bolt hole is corresponding, high energy bolt passes first bolt hole and second bolt hole in proper order and connects the connecting plate on the beam flange.
The energy dissipation section can be uniformly coated with high polymer paint such as polyethylene and the like on the steel core to form a non-adhesive layer, so that friction between the steel core and the constraint steel pipe is reduced.
The constraint steel pipe can be a rectangular hollow high Jiang Fang steel pipe.
The construction method of the beam column node of the novel energy dissipation steel frame structure comprises the following steps:
1) And (3) vertically cutting the upper flange and the lower flange of the H-shaped steel beam 2 by using a cutting machine, wherein the cutting length is 1-1.5 times of the height of the beam along the length direction of the beam. Then, an arc 7 opening is cut on the beam web 6, the cutting depth is 1/4-1/3 of the height of the web 6, and the stiffening ribs 4 are welded on the two sides of the beam flange and the web along the cutting surface. And 6 bolt holes are drilled on two sides of the upper flange and the lower flange of the beam respectively by using a drilling machine.
2) The rectangular hollow constraint steel pipe 13 of the straight buckling restrained brace 3 adopts Q690 high-strength steel, the mortar in the rectangular hollow constraint steel pipe 13 is M30 mortar, the steel core 12 adopts Q235 steel, and the high-strength bolts are all 10.9 grades; after the manufacturing of the straight buckling restrained brace is finished, connecting the straight buckling restrained brace with the upper flange and the lower flange of the H-shaped beam 2, inserting 10.9-level high-strength bolts, and performing primary screwing;
3) And (3) finishing re-screwing and final-screwing of all high-strength bolts by adopting a special electric wrench.
4) The H-shaped steel column 1 and the H-shaped beam 2 are welded by adopting fillet weld, the welding rod adopts E50 type, and the grade of the welding seam is first grade.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides an easy prosthetic energy dissipation beam type steel frame beam column node, its characterized in that includes girder steel and buckling restrained brace, both sides are provided with two convex breach about the girder steel respectively, convex breach sets up in the middle of the girder steel, can dismantle on the convex breach and be connected with buckling restrained brace.
2. The energy dissipation beam type steel frame beam column node easy to repair according to claim 1, wherein the circular arc-shaped notch is a circular arc which is bilaterally symmetrical.
3. The energy dissipating beam steel frame beam column node of claim 1, further comprising an H-beam steel column, wherein the steel beam is attached to a column flange of the H-beam steel column.
4. An energy dissipating beam type steel frame beam column node easy to repair according to claim 1, wherein ribs are welded on two sides of the circular arc-shaped notch, and the ribs are perpendicular to the steel beam.
5. An energy dissipating beam steel frame beam column joint according to claim 4 wherein said steel beam is an H-beam and said rib is perpendicular to the beam flange of said steel beam.
6. The energy dissipation beam type steel frame beam column joint easy to repair according to claim 5, wherein the buckling restrained brace comprises a steel core and a rectangular hollow restrained steel pipe sleeved on the steel core, and high-strength mortar is filled in a gap between the steel core and the rectangular hollow restrained steel pipe.
7. The energy dissipation beam type steel frame beam column node easy to repair according to claim 6, wherein the steel core comprises an energy dissipation section and connecting plates, connecting plates are arranged on two sides of the buckling restrained brace, and the connecting plates are connected to beam flanges through bolts.
8. The energy dissipating beam steel frame beam column node of claim 7, wherein the connecting plate energy dissipating section is connected to the connecting plate through a transition section, and the transition section is inclined toward the energy dissipating section.
9. The energy dissipation beam type steel frame beam column node easy to repair according to claim 1, wherein the chord length of two ends of the circular arc-shaped notch is 1-1.5 times of the height of the steel beam.
10. An energy dissipating beam type steel frame beam column joint easy to repair according to claim 9, wherein the depth of the circular arc-shaped notch is 1/4-1/3 of the height of the steel beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321559386.0U CN220167216U (en) | 2023-06-19 | 2023-06-19 | Energy dissipation beam type steel frame beam column node easy to repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321559386.0U CN220167216U (en) | 2023-06-19 | 2023-06-19 | Energy dissipation beam type steel frame beam column node easy to repair |
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| CN220167216U true CN220167216U (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321559386.0U Active CN220167216U (en) | 2023-06-19 | 2023-06-19 | Energy dissipation beam type steel frame beam column node easy to repair |
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| CN (1) | CN220167216U (en) |
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- 2023-06-19 CN CN202321559386.0U patent/CN220167216U/en active Active
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