CN216552505U - Double-ring staged yield damper for assembled steel structure external wall panel - Google Patents
Double-ring staged yield damper for assembled steel structure external wall panel Download PDFInfo
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- CN216552505U CN216552505U CN202122941848.2U CN202122941848U CN216552505U CN 216552505 U CN216552505 U CN 216552505U CN 202122941848 U CN202122941848 U CN 202122941848U CN 216552505 U CN216552505 U CN 216552505U
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Abstract
The utility model discloses a double-ring staged yield damper for an assembled steel structure external wall panel, which comprises an external wall panel and a steel beam, wherein the external wall panel is connected with the steel beam through the double-ring staged yield damper; the outer surface of one end of the outer ring steel plate is connected with the connecting steel plate in a welding mode, and the connecting steel plate is connected with the steel beam through bolts; the other end of the outer ring steel plate is connected with the inner ring steel plate and the wallboard embedded part by using high-strength bolts; the embedded part is positioned in the external wall panel and comprises a bolt sleeve, an anchoring reinforcing steel bar and an embedded part steel plate.
Description
Technical Field
The utility model belongs to the field of steel structure buildings, and particularly relates to a double-ring staged yield damper for an assembled steel structure external wall panel, which is suitable for areas with high earthquake occurrence frequency and high fortification intensity.
Background
The assembled steel structure building in China is in the rapid development stage, a series of relevant policies are brought out by the country to popularize the assembled steel structure, and the popularization of the assembled steel structure becomes a trend. In the assembled steel structure building, the enclosing wall plate is an important component, and the outer wall plate is used as one of the enclosing wall plates, and the development is particularly rapid. In order to ensure the safety of the external wall-hanging panel, the connection mode of the external wall-hanging panel and the steel structure main body is particularly important for the seismic performance of the wall panel and even the whole structure, and how to improve the seismic performance of the connection node to reduce the damage of an earthquake to the structure is a subject worthy of research.
Nowadays, energy dissipation and shock absorption are widely accepted shock absorption concepts, energy input into a structure is introduced into a specific component through control, so that the safety of a main body structure is guaranteed, and a fuse is added for the safety of the structure. Steel dampers are a large category of dissipative vibration damping devices, wherein a U-shaped steel plate is a typical out-of-plane bending dissipative damper, which mainly achieves the dissipation of seismic energy through shear deformation of bent sections of the steel plate. However, in the currently existing embodiments, U-shaped steel plates are mainly used for the connection between wall panels, and are rarely used for the connection between wall panels and steel frames (hou and tao, qiao, xie shun. U-shaped steel-friction energy dissipation node and exterior wall system for fabricated exterior wall panels [ P ]. shandong province: CN111519786A, 2020-08-11.); most metal dampers are based on medium-to-large-earthquake yielding energy dissipation design, and small earthquakes are in an elastic state and do not have energy dissipation capacity.
SUMMERY OF THE UTILITY MODEL
In order to enable the metal damper to play a good energy consumption role under earthquakes with different strengths, the utility model provides a double-ring staged yield damper based on a U-shaped steel plate damper. Annular steel sheet has compared U shaped steel board and has increased an segmental arc, and the deformation of two segmental arcs of accessible realizes the consumption to seismic energy, and the power consumption ability is more outstanding than U shaped steel board. Under a small earthquake, the bolt slides in the oblong holes in the inner ring steel plate and the outer ring steel plate, and energy consumption is carried out through friction sliding of the bolt; under the medium or large earthquake, the design that the thickness of the outer ring steel plate is larger and the thickness of the inner ring steel plate is smaller enables the inner ring and the outer ring to have different yield displacements, the plastic deformation of the inner ring and the yield yielding (the outer ring keeps an elastic state) under the action of the medium earthquake are realized, and the plastic deformation of the outer ring and the yielding (the energy consumption together with the inner ring) under the action of the large earthquake are realized, so that the design goal of graded yield energy consumption is realized. When the double-ring staged yielding damper is used as a connecting node of the steel frame and the external wall panel, the inner ring of the damper can yield before the wall panel is damaged during small earthquake by adjusting parameters such as the thickness of the damper, so that the wall panel is effectively protected; during medium or large earthquakes, the outer ring of the damper yields after the wallboard is damaged, and the wallboard is prevented from being further seriously damaged.
The utility model is realized by at least one of the following technical schemes.
A double-ring staged yield damper for an assembled steel structure external wall panel comprises a steel beam and the external wall panel, wherein the external wall panel is connected with the steel beam through the double-ring staged yield damper, and the double-ring staged yield damper comprises an inner ring steel plate, an outer ring steel plate, a connecting steel plate and a wall panel embedded part; the outer surface of one end of the outer ring steel plate is connected with the connecting steel plate, and the connecting steel plate is connected with the steel beam through a first connecting piece; the other end of the outer ring steel plate is connected with the inner ring steel plate and the wallboard embedded part through a second connecting piece; the wall panel embedded part is positioned in the external wall panel.
Preferably, the outer ring steel plate and the inner ring steel plate respectively comprise two sections of straight steel plates which are oppositely arranged, and the end parts of the two sections of straight steel plates are connected through two sections of arc-shaped plates.
Preferably, be equipped with first through-hole on connecting plate, the girder steel, connecting plate is connected through the first connecting piece that passes first through-hole with the girder steel.
Preferably, the straight steel plate on one side of the outer ring steel plate and the inner ring steel plate is provided with a second through hole, and the outer ring steel plate, the inner ring steel plate and the external wall panel are connected through a second connecting piece penetrating through the second through hole.
Preferably, the diameter of the first through hole and the second through hole is 1-2mm larger than that of the bolt rod, and the length of the long edge of each long hole is 3-5 times of the diameter of the hole.
Preferably, the thickness of the outer ring steel plate is 8-12mm, and the diameter of the bending section is 100-150mm according to the size of the steel beam.
Preferably, the thickness of the inner ring steel plate is smaller than that of the outer ring steel plate, and is 4-6 mm.
Preferably, the gap between the top of the external wallboard and the steel beam is filled with a heat insulation material.
Preferably, the wallboard embedded part comprises a bolt sleeve, an anchoring steel bar and an embedded part steel plate.
Preferably, the anchoring steel bar is an HPB300 steel bar with the diameter of 10 mm.
Compared with the prior art, the utility model has the beneficial effects that:
the double-ring staged yield damper provided by the utility model has the advantages that under small vibration, the deformation between the structural layers is small, and energy is consumed through the friction sliding action of the bolt in the oblong hole; during the middle earthquake, the bolt starts to contact the wall of the long circular hole, the inner ring starts to generate plastic deformation due to small thickness and small yield displacement to yield and consume energy, the outer ring is still in an elastic state at the moment, the wallboard is not damaged, and the expected effect that the damper yields before the main body structure is realized; when a large earthquake occurs, the outer ring is plastically deformed and yields, and consumes energy together with the inner ring, so that the overall energy consumption capability of the structure is improved, and the structure is prevented from collapsing under the large earthquake. Through friction sliding and damper plastic deformation energy consumption, the effect of multi-mode and staged yielding can be realized, the energy consumption capability of the metal damper for resisting earthquakes with different strengths is effectively improved, and the brittle failure of the wallboard is avoided.
The double-ring staged yield damper provided by the utility model adopts a bolt connection and welding mode, so that wet operation such as field grouting is avoided, the labor cost is saved, and the construction progress is accelerated.
The double-ring staged yield damper provided by the utility model has the advantages that all connecting pieces can be detached and recycled, and the maintenance cost is saved.
Drawings
FIG. 1 is a perspective view of the overall structure of an embodiment of the present invention;
FIG. 2 is a perspective detail view of a dual ring staged yield damper according to an embodiment of the present invention;
FIG. 3 is a schematic plan view of the overall structure of an embodiment of the present invention;
in the figure: 1-a steel beam; 2-external hanging wall board; 3-outer ring steel plate; 4-inner ring steel plate; 5-connecting steel plates; 6-a first oblong hole; 7-a second oblong hole; 8-a first connector, 9-a second connector; 10-bolt sleeves; 11-anchoring a steel bar; 12-embedment steel plates.
Detailed Description
The following describes the object of the present invention in further detail with reference to the drawings and specific examples, which are not repeated herein, but the embodiments of the present invention are not limited to the following examples. 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 application belongs.
As shown in fig. 1, the double-ring staged yielding damper for the fabricated steel structure external wall panel comprises a steel beam 1 and an external wall panel 2, wherein the external wall panel 2 is connected with the steel beam 1 through the double-ring staged yielding damper.
As shown in fig. 2 and 3, the double-ring staged yield damper comprises an inner ring steel plate 4, an outer ring steel plate 3, a connecting steel plate 5 and a wallboard embedded part; the outer ring steel plate 3 and the inner ring steel plate 4 both comprise two sections of straight steel plates which are oppositely arranged, and the end parts of the two sections of straight steel plates are connected through two sections of arc-shaped plates; the straight steel sheet surface of one end of outer loop steel sheet 3 with linking steel sheet 5 links to each other with the welding mode, all be equipped with first slotted hole 6 on linking steel sheet 5, the girder steel 1, linking steel sheet 5 is connected through the first connecting piece 8 that passes first slotted hole 6 with girder steel 1.
The outer ring steel plate 3, the inner ring steel plate 4 and the outer wall-hung wallboard 2 are connected through a second connecting piece 9 penetrating through the second long round hole 7.
In a preferred embodiment, the first connecting member 8 and the second connecting member 9 are high-strength bolts.
The wallboard embedded part is positioned in the external wallboard 2 and comprises a bolt sleeve 10, an anchoring steel bar 11 and an embedded part steel plate 12. The embedded part steel plate 12 is welded with the distributed steel bars of the wallboard concrete layer, the anchoring steel bars 11 are welded with the embedded part steel plate 12, and the bolt sleeve 10 is connected with the second connecting piece 9.
In a preferred embodiment, the anchoring bar 11 is a HPB300 bar with a diameter of 10 mm.
The hole diameters of the first long round hole 6 and the second long round hole 7 are 1-2mm larger than the diameter of the bolt rod, and the length of the long edge of each long hole is 3-5 times of the hole diameter;
in a preferred embodiment, each bolt is rated at 8.8 or 10.9.
The thickness of the outer ring steel plate 3 is 8-12mm, and the diameter of the bending section is 100-150mm according to the size of the steel beam.
The thickness of the inner ring steel plate 4 is smaller than that of the outer ring steel plate 3.
As a preferred embodiment, the inner ring steel plate 4 is 4-6 mm.
Under the action of a horizontal earthquake parallel to the wall surface, the frame beam firstly bears earthquake load. When the earthquake load is small, the first connecting piece 8 slides in the first long circular hole 6, energy is consumed through friction sliding, and the first connecting piece 8 does not contact the wall of the bolt hole, so that the outer ring steel plate 3 and the inner ring steel plate 4 are deformed; when the earthquake load is gradually increased, the first connecting piece 8 slides to the edge of the first long circular hole 6 to be contacted with the hole wall, and drives the outer ring steel plate 3 and the inner ring steel plate 4 to elastically deform; when the earthquake load continues to increase, the inner ring steel plate 4 begins to yield before the wallboard 4 is damaged due to smaller thickness and smaller yield displacement, and generates plastic deformation to consume energy, and the outer ring steel plate 3 is still in an elastic deformation state at the moment; when the earthquake load is larger, the wallboard begins to be damaged, the plastic deformation of the inner ring steel plate 4 is increased, the energy consumption is increased, the outer ring steel plate 3 begins to yield and consume energy, the inner ring steel plate and the outer ring steel plate both participate in the energy consumption of the structure at the moment, and the integral energy consumption capacity of the structure is obviously enhanced. Therefore, the effects of friction sliding energy consumption under small earthquake, inner ring yielding energy consumption under medium earthquake and outer ring yielding and inner ring energy consumption together under large earthquake are achieved, and the aims of dissipating energy by stages and protecting the wallboard are achieved.
The construction method of the above example mainly comprises the following steps:
1. when the connecting piece is installed, the outer ring steel plate 3 and the connecting steel plate 5 are welded with each other and are placed at the lower flange position of the I-shaped steel beam 1, the connecting steel plate 5 with the reserved long circular hole is aligned with the lower flange hole of the I-shaped steel beam 1, and the first connecting piece 8 is installed and fastened.
2. And (3) placing the inner ring steel plate 4 in the outer ring steel plate 3, aligning the inner ring steel plate and the outer ring steel plate with the oblong holes of the outer wall-hung plate 2, and installing and tightening the second connecting piece 9.
3. After the nodes and the wall boards are installed, gaps between the externally-hung wall boards 2 and the I-shaped steel beams 1 are filled with heat insulation materials.
4. When the inner ring steel plate 4 is seriously damaged under the condition of a large earthquake, the second connecting piece 9 can be unscrewed and the inner ring steel plate 4 can be replaced on the premise of supporting the outer wall hanging plate 2.
In conclusion, compared with other energy consumption connection nodes, the double-ring staged yielding damper for the assembled steel structure external wall panel has the following advantages:
1. under the condition of small shock, energy is consumed through the friction sliding action of the high-strength bolt, and the premature yield failure of the damper is avoided;
2. under the condition of moderate shock, the inner ring steel plate begins to yield before the wallboard is damaged due to smaller thickness and smaller yield displacement, the arc-shaped section is driven to generate plastic deformation through the relative displacement between the straight sections so as to consume energy, and the outer ring steel plate is still in an elastic deformation state at the moment;
3. the outer ring steel plate begins to yield under the heavy earthquake, and the inner ring and the outer ring consume energy together. Obviously, the earthquake energy of the input structure can be introduced into the connecting node through passive control, and the staged energy consumption is realized by adjusting the sizes of the inner ring steel plate and the outer ring steel plate, so that the energy consumption capability of the structure for resisting earthquakes with different strengths is effectively improved, the safety of the main body structure is ensured, and the damage of the earthquake to the wall plate is reduced.
The utility model improves and supplements the energy-consuming connection node form of the existing external wall board and the frame beam, and theoretically, the performance in the actual engineering is more excellent than the existing node connection. The damper with the damping and energy-dissipating functions is applicable to earthquakes with various intensities, and is undoubtedly a good choice for small earthquakes or large earthquakes.
The above examples 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. It will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the disclosure. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a dicyclo is surrender attenuator stage by stage for assembled steel construction externally-hung wallboard which characterized in that: the double-ring staged yield damper comprises a steel beam (1) and an external wall panel (2), wherein the external wall panel (2) is connected with the steel beam (1) through a double-ring staged yield damper, and the double-ring staged yield damper comprises an inner ring steel plate (4), an outer ring steel plate (3), a connecting steel plate (5) and a wall panel embedded part; the outer surface of one end of the outer ring steel plate (3) is connected with the connecting steel plate (5), and the connecting steel plate (5) is connected with the steel beam (1) through a first connecting piece (8); the other end of the outer ring steel plate (3) is connected with the inner ring steel plate (4) and the wallboard embedded part through a second connecting piece (9); the wallboard embedded part is positioned in the external wallboard (2).
2. The dual ring staged yield damper for an assembled steel structural outer panel of claim 1, wherein: the outer ring steel plate (3) and the inner ring steel plate (4) both comprise two sections of straight steel plates which are oppositely arranged, and the end parts of the two sections of straight steel plates are connected through two sections of arc-shaped plates.
3. The dual ring staged yield damper for an assembled steel structural outer panel of claim 2, wherein: be equipped with first through-hole (6) on connecting plate (5), girder steel (1), connecting plate (5) are connected through first connecting piece (8) that pass first through-hole (6) with girder steel (1).
4. A dual ring staged yield damper for an assembled steel structural outer panel as claimed in claim 3 wherein: the steel plate is straight and is equipped with second through-hole (7) in one side of outer ring steel sheet (3), inner ring steel sheet (4), externally hung wallboard (2) are connected through second connecting piece (9) that pass second through-hole (7).
5. The dual ring staged yield damper for an assembled steel structural outer panel of claim 4, wherein: the diameter of the first through hole (6) and the second through hole (7) is 1-2mm larger than that of the bolt rod, and the length of the long edge of each long hole is 3-5 times of the diameter of the hole.
6. The dual ring staged yield damper for an assembled steel structural outer panel of claim 5, wherein: the thickness of the outer ring steel plate (3) is 8-12mm, and the diameter of the bending section is 100-150mm according to the size of the steel beam.
7. The dual ring staged yield damper for an assembled steel structural outer panel of claim 6, wherein: the thickness of the inner ring steel plate (4) is smaller than that of the outer ring steel plate (3) and is 4-6 mm.
8. The dual ring staged yield damper for an assembled steel structural outer panel of claim 7, wherein: and a gap between the top of the external wallboard (2) and the steel beam (1) is filled with a heat insulation material.
9. The dual ring staged yield damper for an assembled steel structural outer panel of any of claims 1 to 8, wherein: the wallboard embedded part comprises a bolt sleeve (10), an anchoring steel bar (11) and an embedded part steel plate (12).
10. The dual ring staged yield damper for an assembled steel structural outer panel of claim 9, wherein: the anchoring steel bars (11) are HPB300 steel bars with the diameter of 10 mm.
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| CN202122941848.2U CN216552505U (en) | 2021-11-25 | 2021-11-25 | Double-ring staged yield damper for assembled steel structure external wall panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653634A (en) * | 2022-12-05 | 2023-01-31 | 中国矿业大学(北京) | Semi-rigid connecting device for assembled cladding panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653634A (en) * | 2022-12-05 | 2023-01-31 | 中国矿业大学(北京) | Semi-rigid connecting device for assembled cladding panel |
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