CN209923760U - Series variable-rigidity friction pendulum vibration reduction and isolation support - Google Patents
Series variable-rigidity friction pendulum vibration reduction and isolation support Download PDFInfo
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- CN209923760U CN209923760U CN201920551926.8U CN201920551926U CN209923760U CN 209923760 U CN209923760 U CN 209923760U CN 201920551926 U CN201920551926 U CN 201920551926U CN 209923760 U CN209923760 U CN 209923760U
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Abstract
The utility model provides a series-type becomes rigidity friction pendulum and subtracts isolation bearing, it includes upper bracket board and bottom suspension bedplate, wherein, should subtract isolation bearing still includes: set up the following part between last bedplate and the lower bolster from last down: a damping spherical crown plate; the damping spherical crown plate includes: the damping rubber layer is arranged between the upper convex spherical plate and the lower convex spherical plate. Series-type become rigidity friction pendulum subtract isolation bearing with different rigidity, the structural design of difference subtracting the isolation principle is mixed in a support, researches out the change of a rigidity, fine avoid resonance and class resonance phenomenon subtract isolation bearing, better reply earthquake operating mode realizes better shock insulation and the shock attenuation of bridge.
Description
Technical Field
The utility model relates to an subtract isolation bearing technical field, and in particular to serial-type becomes rigidity friction pendulum and subtracts isolation bearing.
Background
Since the great earthquake of Wenchuan, China deeply studies and applies bridge shock absorption for ten years, and the earthquake-proof design concept adopted by people at present adopts a shock absorption and isolation technology. The basic principle of bridge seismic isolation design is to prolong the vibration period of the structure to isolate seismic energy, and to increase damping to absorb part of the input seismic energy through a damping device to reduce the seismic reaction of the structure and reduce the seismic damage. When the self-vibration period of the bridge is prolonged, the component with a more obvious amplitude value in the earthquake can be avoided, the resonance and the like can be avoided, and the earthquake reaction of the structure is reduced. However, the structure period is prolonged, the displacement reaction of the structure is increased, the appearance of the support is correspondingly enlarged, and troubles are brought to the design and installation of the bridge.
Therefore, how to better realize the seismic isolation and reduction function while prolonging the natural vibration period of the structure becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve at least partial above-mentioned technical problem, the utility model provides a shock insulation support is subtracted to serial-type variable stiffness friction pendulum, it includes upper bracket board and bottom suspension bedplate, wherein, should subtract shock insulation support still includes: the following components are arranged between the upper support plate and the lower support plate: a damping spherical crown plate; wherein the damping spherical crown plate comprises: the damping rubber layer is arranged between the upper convex spherical plate and the lower convex spherical panel.
In the above scheme, in the series variable-stiffness friction pendulum seismic mitigation and isolation bearing, the upper convex spherical plate, the lower convex spherical panel and the damping rubber layer are integrally arranged.
In the above scheme, in the series variable-stiffness friction pendulum seismic mitigation and isolation bearing, the upper end surface of the damping rubber layer is connected to the upper convex spherical plate, and the lower end surface of the damping rubber layer is connected to the lower convex spherical plate.
In the above scheme, in the series-connection type variable-rigidity friction pendulum seismic mitigation and isolation support, the upper convex ball panel and the lower convex ball panel can be integrally formed or assembled and formed.
In the above scheme, in the tandem variable-stiffness friction pendulum seismic mitigation and isolation bearing, the damping spherical crown plate is a cylinder with a hollow structure, or the damping spherical crown plate comprises a plurality of damping spherical crown plate sub-members.
In the above scheme, in the tandem variable stiffness friction pendulum seismic mitigation and isolation bearing, the seismic mitigation and isolation bearing further comprises a first spherical sliding plate arranged between the upper support plate and the damping spherical crown plate, and a second spherical sliding plate arranged between the lower support plate and the damping spherical crown plate; the lower end surface of the upper support plate is provided with a first concave spherical surface, and the first spherical sliding plate is arranged in a groove of the first concave spherical surface; the upper end surface of the lower support plate is provided with a second concave spherical surface, and the second spherical surface sliding plate is arranged in a groove of the second concave spherical surface.
In the above scheme, in the tandem variable-stiffness friction pendulum seismic mitigation and isolation bearing, the upper convex spherical plate is arranged in contact with the first spherical sliding plate, and a sliding friction pair is formed between the upper convex spherical plate and the first spherical sliding plate; the lower convex ball panel is arranged in contact with the second spherical sliding plate, and a sliding friction pair is formed between the lower convex ball panel and the second spherical sliding plate.
In the above scheme, in the series variable-stiffness friction pendulum seismic mitigation and isolation bearing, the damping rubber layer comprises a plurality of rubber layers and a steel plate arranged between the two rubber layers.
In the above scheme, in the series variable-stiffness friction pendulum seismic mitigation and isolation support, the upper convex spherical plate and the lower convex spherical plate are coated with the stainless steel plate.
In the above scheme, in the serial variable-stiffness friction pendulum seismic mitigation and isolation bearing, the convex spherical surface of the upper convex spherical plate and the convex spherical surface of the lower convex spherical panel are subjected to chrome plating treatment or polishing treatment.
In the scheme, in the series-connection type variable-rigidity friction pendulum seismic mitigation and isolation support, the seismic mitigation and isolation support further comprises foundation bolts used for fixing the upper support plate and the lower support plate.
Has the advantages that:
series-type become rigidity friction pendulum subtract isolation bearing in, with different rigidity, the difference subtracts the structural design of isolation principle and mashups in a support, develops the change of a rigidity, fine avoid resonance and class resonance phenomenon subtract isolation bearing, better reply earthquake operating mode realizes better shock insulation and the shock attenuation of bridge.
Drawings
FIG. 1 is a schematic view of a first structure of a tandem type variable stiffness friction pendulum seismic mitigation and isolation bearing according to an embodiment of the present invention;
FIG. 2 is a partial enlarged view of a damping spherical crown plate in the tandem type variable stiffness friction pendulum seismic mitigation and isolation bearing according to one embodiment of the present invention;
FIG. 3 is a schematic view of a spherical seismic mitigation and isolation operating condition in the tandem variable stiffness friction pendulum seismic mitigation and isolation bearing according to one embodiment of the present invention;
FIG. 4 is a schematic view of the working condition of rubber damping vibration damping in the tandem variable stiffness friction pendulum vibration damping and isolating support according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of a second structure of a tandem type variable stiffness friction pendulum seismic mitigation and isolation bearing according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a third structure of a tandem type variable stiffness friction pendulum seismic mitigation and isolation bearing according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a first top view of a damping spherical crown plate member of the tandem variable stiffness friction pendulum seismic mitigation and isolation bearing according to one embodiment of the present invention;
FIG. 8 is a schematic diagram of a second top view of a damping spherical cap plate member of the tandem variable stiffness friction pendulum seismic mitigation and isolation bearing according to one embodiment of the present invention;
FIG. 9 is a third schematic top view of a damping spherical cap plate member of the tandem variable stiffness friction pendulum seismic isolation bearing according to one embodiment of the present invention;
fig. 10 is a fourth schematic top view of a damping spherical cap plate member in the tandem variable stiffness friction pendulum seismic mitigation and isolation bearing according to one embodiment of the present invention.
Reference numerals:
1 represents an upper support plate, 2 represents a first spherical sliding plate, 3 represents a lower support plate, 4 represents an anchor bolt, 5 represents a damping spherical crown plate, 51 represents an upper convex spherical surface plate, 52 represents a rubber layer, 53 represents a steel plate, 54 represents a lower convex spherical surface plate, 55 represents a damping spherical crown plate component, and 6 represents a second spherical sliding plate.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, which should not be considered limiting of the invention, but rather should be understood to be a more detailed description of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, to the extent that numerical ranges are recited in the present disclosure, it is understood that the upper and lower limits of the range, and each intervening value therebetween, is specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
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 invention belongs. Although only the preferred methods and materials are described in this disclosure, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present disclosure. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present disclosure without departing from the scope or spirit of the disclosure. The specification and examples are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
As used herein, "and/or" includes any and all combinations of the stated items.
The present invention will be further described with reference to the following detailed description and accompanying drawings.
As shown in fig. 1 to 10, the utility model provides a shock insulation support is subtracted to serial-type variable rigidity friction pendulum, it includes upper bracket board 1 and undersetting board 3, wherein, should subtract shock insulation support still includes: the following components are provided between the upper seat plate 1 and the lower seat plate 3: a damping spherical crown plate 5; wherein the damping spherical crown plate 5 comprises: an upper convex spherical plate, a lower convex spherical plate 54, and a damping rubber layer disposed between the upper convex spherical plate and the lower convex spherical plate 54.
The utility model discloses in with different rigidity, different upper seat board, damping ball crown board 5 and the lower seat plate structural design of subtracting the isolation principle are mixed in a support, develop the change of a rigidity, fine the isolation bearing that subtracts of avoiding resonance and class resonance phenomenon, better reply earthquake operating mode realizes better shock insulation and the shock attenuation of bridge.
When the seismic isolation and reduction support has a horizontal displacement requirement, the damping rubber plate 5 firstly yields to realize a small amount of displacement, and the requirement of the support for larger displacement is realized. When an earthquake occurs, the damping spherical crown plate 5 is in contact with the upper support plate 1 and the lower support plate 3, and in order to protect the support from being damaged under the earthquake working condition, the damping rubber layer in the damping spherical crown plate 5 can buffer horizontal earthquake force transmitted by the upper structure and the lower structure to a certain extent through shearing deformation of the damping rubber layer. Subtract shock insulation support horizontal rigidity and increase to flexible antidetonation comes the correspondence earthquake operating mode, realizes better shock insulation of bridge and shock attenuation.
In the above scheme, the upper convex ball plate, the lower convex ball panel 54 and the damping rubber layer are integrally arranged.
The upper convex spherical face plate 51, the lower convex spherical face plate 54 and the damping rubber layer integrally form a damping spherical crown plate 5, when an earthquake occurs, the spherical sliding plate and the damping spherical crown plate 5 slide relatively, when the damping spherical crown plate 5 moves to a support to set a shock insulation displacement amount, namely when the upper convex spherical face plate 54 and the lower convex spherical face plate 54 of the damping spherical crown plate 5 are in contact with the outer ring check rings of the upper support plate 3 and the lower support plate 3, the rigidity at the moment is the rigidity generated by a friction spherical pendulum surface, the rigidity is small, and the upper seat plate, the lower seat plate and the damping spherical crown plate 5 are utilized to play a role in reducing the earthquake resistance.
In the above solution, the upper end surface of the damping rubber layer is connected to the upper convex spherical surface plate 51, and the lower end surface of the damping rubber layer is connected to the lower convex spherical surface plate 54.
In some embodiments, the upper end surface of the damping rubber layer may be adhered to the upper convex spherical surface plate 51 by vulcanization, or the upper end surface of the damping rubber layer may be attached to the upper convex spherical surface plate 51 by bolts, or the upper end surface of the damping rubber layer may be attached to the upper convex spherical surface plate 51 by an adhesive.
In the above solution, the damping spherical crown plate 5 is a cylinder with a hollow structure, or the damping spherical crown plate 5 includes a plurality of damping spherical crown plate components 55.
As shown in fig. 7 to 10, the damping spherical crown plate member has a regular cross section, such as a rectangular shape, a circular shape, etc., and may be disposed between the upper seat plate 1 and the lower seat plate 3 with a certain regulation. Each damping spherical cap plate member 55 comprises an upper convex spherical plate member, a lower convex spherical plate member, and a damping rubber layer member disposed between the upper convex spherical plate member and the lower convex spherical plate member.
In the scheme, the seismic isolation and reduction support further comprises a first spherical sliding plate 2 arranged between the upper support plate 1 and the damping spherical crown plate 5, and a second spherical sliding plate 6 arranged between the lower support plate 3 and the damping spherical crown plate 5; a first concave spherical surface is arranged on the lower end surface of the upper support plate 1, and the first spherical sliding plate 2 is arranged in a groove of the first concave spherical surface; the upper end surface of the lower support plate 3 is provided with a second concave spherical surface, and the second spherical surface sliding plate 6 is arranged in a groove of the second concave spherical surface.
When the seismic isolation and reduction support has a horizontal displacement requirement, the damping rubber layer firstly yields to realize a small amount of displacement, and when the relative displacement is further increased, the sliding friction pair of the first spherical sliding plate 2 and the damping spherical crown plate 5 and the sliding friction pair of the second spherical sliding plate 6 and the damping spherical crown plate 5 slide, so that the requirement of the support for larger displacement is realized. When an earthquake occurs, the first spherical sliding plate 2, the damping spherical crown plate 5 and the second spherical sliding plate 6 slide relatively, when the damping spherical crown plate moves to the support to set the shock insulation displacement, namely when the first spherical sliding plate 2 and the second spherical sliding plate 6 of the damping spherical crown plate 5 are in contact with the upper support plate 1 and the lower support plate 3, in order to protect the support from being damaged under the earthquake working condition, the damping rubber layer in the damping spherical crown plate 5 can buffer the horizontal earthquake force transmitted by the upper structure and the lower structure to a certain extent through the shearing deformation of the damping rubber layer. Subtract shock insulation support horizontal rigidity and increase to flexible antidetonation comes the correspondence earthquake operating mode, realizes better shock insulation of bridge and shock attenuation.
In the above solution, the upper convex spherical panel 51 is disposed in contact with the first spherical sliding plate 2, and a sliding friction pair is formed between the upper convex spherical panel 51 and the first spherical sliding plate 2; the lower convex spherical surface plate 54 is arranged in contact with the second spherical sliding plate 6, and a sliding friction pair is formed between the lower convex spherical surface plate 54 and the second spherical sliding plate 6.
The spherical contact setting of upper bracket board 1 and first spherical slide 2, the spherical contact setting of lower bracket board 3 and second spherical slide 6, the contact setting of protruding spherical plate 51 and first spherical slide 2, protruding spherical plate 54 down with second spherical slide 6 contact setting all satisfy the daily corner and the temperature change displacement of support.
In the above-described aspect, the damping rubber layer includes a plurality of rubber layers 52 and a steel plate 53 disposed between two of the rubber layers 52. The hybrid arrangement of the rubber layer 52 and the steel plate 53 improves the shock resistance of the damping rubber layer.
In the above scheme, the number of the steel plates can be increased in the damping rubber layer to increase the overall rigidity of the damping rubber layer.
In the above solution, the upper convex ball panel 51 and the lower convex ball panel 54 are coated with stainless steel plates.
In the above scheme, the convex spherical surface of the upper convex spherical panel 51 and the convex spherical surface of the lower convex spherical panel 54 are processed by chrome plating or polishing.
In the scheme, the seismic isolation and reduction support further comprises an anchor bolt 4 for fixing the upper support plate 1 and the lower support plate 3.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.
Claims (10)
1. The utility model provides a shock mount is subtracted to serial-type variable rigidity friction pendulum which includes upper bracket board (1) and bottom suspension bedplate (3), wherein, should subtract shock mount and still include: the following components are arranged between the upper support plate (1) and the lower support plate (3):
a damping spherical crown plate (5);
wherein the damping spherical crown plate (5) comprises: the spherical damper comprises an upper convex spherical panel (51), a lower convex spherical plate (54) and a damping rubber layer arranged between the upper convex spherical panel (51) and the lower convex spherical panel (54).
2. The series variable stiffness friction pendulum seismic mitigation and isolation bearing according to claim 1, wherein the upper convex spherical face plate (51), the lower convex spherical face plate (54) and the damping rubber layer are integrally arranged.
3. The series variable stiffness friction pendulum seismic isolation bearing of claim 2, wherein an upper end face of the damping rubber layer is connected to the upper convex spherical face plate (51) and a lower end face of the damping rubber layer is connected to the lower convex spherical face plate (54).
4. The series variable stiffness friction pendulum seismic mitigation and isolation bearing of claim 1, wherein the upper convex spherical panel and the lower convex spherical panel can be integrally formed or assembled.
5. The series variable stiffness friction pendulum seismic mitigation and isolation mount of claim 1,
the damping spherical crown plate (5) is a cylinder with a hollow structure, or the damping spherical crown plate (5) comprises a plurality of damping spherical crown plate sub-pieces (55).
6. The tandem variable stiffness friction pendulum seismic isolation bearing according to claim 1, further comprising a first spherical sliding plate (2) disposed between the upper bearing plate (1) and the damping spherical crown plate (5), and a second spherical sliding plate (6) disposed between the lower bearing plate (3) and the damping spherical crown plate (5);
the lower end surface of the upper support plate (1) is provided with a first concave spherical surface, and the first spherical sliding plate (2) is arranged in a groove of the first concave spherical surface;
the upper end surface of the lower support plate (3) is provided with a second concave spherical surface, and the second spherical surface sliding plate (6) is arranged in a groove of the second concave spherical surface.
7. The series variable stiffness friction pendulum seismic mitigation and isolation mount of claim 6,
the upper convex ball panel (51) is arranged in contact with the first spherical sliding plate (2), and a sliding friction pair is formed between the upper convex ball panel (51) and the first spherical sliding plate (2);
the lower convex spherical panel (54) is arranged in contact with the second spherical sliding plate (6), and a sliding friction pair is formed between the lower convex spherical panel (54) and the second spherical sliding plate (6).
8. The series variable stiffness friction pendulum seismic isolation bearing of claim 1, wherein the damping rubber layer comprises a plurality of rubber layers (52) and a steel plate (53) disposed between two of the rubber layers (52).
9. The series variable stiffness friction pendulum seismic mitigation and isolation bearing according to claim 1, wherein the upper convex spherical face plate (51) and the lower convex spherical face plate (54) are clad with stainless steel plates.
10. The series type variable stiffness friction pendulum seismic mitigation and isolation bearing according to claim 1, wherein the convex spherical surface of the upper convex spherical panel (51) and the convex spherical surface of the lower convex spherical panel (54) are chrome-plated or polished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920551926.8U CN209923760U (en) | 2019-04-22 | 2019-04-22 | Series variable-rigidity friction pendulum vibration reduction and isolation support |
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| CN201920551926.8U CN209923760U (en) | 2019-04-22 | 2019-04-22 | Series variable-rigidity friction pendulum vibration reduction and isolation support |
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| CN209923760U true CN209923760U (en) | 2020-01-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877147A (en) * | 2020-07-29 | 2020-11-03 | 株洲时代新材料科技股份有限公司 | Bridge friction support |
| CN113431100A (en) * | 2021-06-15 | 2021-09-24 | 阳光学院 | Civil engineering antidetonation structure |
-
2019
- 2019-04-22 CN CN201920551926.8U patent/CN209923760U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877147A (en) * | 2020-07-29 | 2020-11-03 | 株洲时代新材料科技股份有限公司 | Bridge friction support |
| CN113431100A (en) * | 2021-06-15 | 2021-09-24 | 阳光学院 | Civil engineering antidetonation structure |
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