CN108316502B - SMA wire-friction damper suitable for single-layer spherical reticulated shell - Google Patents
SMA wire-friction damper suitable for single-layer spherical reticulated shell Download PDFInfo
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- CN108316502B CN108316502B CN201810146959.4A CN201810146959A CN108316502B CN 108316502 B CN108316502 B CN 108316502B CN 201810146959 A CN201810146959 A CN 201810146959A CN 108316502 B CN108316502 B CN 108316502B
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- connecting plate
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- plates
- friction
- sma wire
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- 239000002356 single layer Substances 0.000 title claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 25
- 238000005265 energy consumption Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002520 smart material Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses an SMA wire-friction damper suitable for a single-layer spherical reticulated shell, which comprises a first connecting plate, two second connecting plates, two circular friction plates, an SMA wire and the like, wherein the first connecting plate is of a Y-shaped structure; two wing plates of the first connecting plate are respectively connected with one ends of two second connecting plates, and a web plate of the first connecting plate and the other ends of the two second connecting plates are fixed on a single-layer spherical reticulated shell welding ball; a long chute is formed in the second connecting plate; the circular friction plate is arranged between the first connecting plate and the second connecting plate, the high-strength bolt penetrates through the long sliding groove to connect the circular friction plate and the first connecting plate, so that the first connecting plate, the circular friction plate and the second connecting plate are in tight friction connection, and the circular friction plate, the first connecting plate and the high-strength bolt can slide relatively with the second connecting plate along the long sliding groove. The invention has definite stress and simple structure, and can effectively inhibit the vibration of the large-span space single-layer spherical reticulated shell structure.
Description
Technical Field
The invention relates to the field of large-span building steel structures, in particular to an SMA wire-friction damper suitable for a single-layer spherical reticulated shell.
Background
With the continuous progress of the building level in China, the large-span space reticulated shell structure is widely applied to large public buildings such as large-scale stadiums, exhibition halls and airport terminal buildings. Because the single-layer spherical reticulated shell structure with large span space is mainly applied to public buildings with frequent activities and dense personnel, the stress mode, the force transmission path and the stress distribution of the structure are changed when the single-layer spherical reticulated shell structure is subjected to earthquake, wind disaster and the like in the construction or use process due to load or environment change, so that the structure is damaged, the single-layer spherical reticulated shell is low in redundancy and weak in continuous collapse resistance, and the whole structure is likely to be unstable and damaged quickly after the local structure is damaged. The method for improving the collapse resistance of the structure by adding the damper is a reasonable and effective method. At present, the large-span space structure is mainly provided with traditional tuned mass dampers, viscous dampers and the like for damping and energy consumption. These dampers are generally prone to problems such as oil leakage, high cost and need for post maintenance. There is a great need to develop high performance vibration damper suitable for large span space single layer spherical reticulated shell structures.
Shape Memory Alloys (SMA) are rapidly developing as one of the smart materials for research and application in the anti-seismic aspect of civil engineering. SMA has unique shape memory effect and superelastic properties. Superelasticity is one of the main characteristics, namely that SMA generates larger deformation, the SMA can return to a shape before deformation after external force is removed, and the stress-strain relationship presents nonlinear characteristics and can generate dissipation energy. Notably, the stress-strain curve with significant hysteresis characteristics is caused by the solid phase transformation process inside the SMA, and therefore does not lead to damage to the material. The damper designed by utilizing the superelastic effect of the shape memory alloy has good durability and corrosion resistance, long service life, large deformation and recoverable deformation.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an SMA wire-friction damper suitable for a single-layer spherical reticulated shell, which can effectively inhibit the vibration of a large-span space single-layer spherical reticulated shell structure.
The technical scheme adopted by the invention is as follows: an SMA wire-friction damper suitable for a single-layer spherical reticulated shell comprises a first connecting plate, two second connecting plates, two circular friction plates, an SMA wire, a first clamp and a second clamp; the first connecting plate is of a Y-shaped structure, two wing plates of the first connecting plate are respectively connected with one ends of two second connecting plates, and a web plate of the first connecting plate and the other ends of the two second connecting plates are respectively fixed on a single-layer spherical reticulated shell welding ball; each second connecting plate is provided with a long chute for sliding the high-strength bolt; the circular friction plate is arranged at the joint of the first connecting plate and the second connecting plate and is positioned between the first connecting plate and the second connecting plate, the high-strength bolt penetrates through the long chute to connect the circular friction plate and the first connecting plate, so that the first connecting plate, the circular friction plate and the second connecting plate are in tight friction connection, and the circular friction plate, the first connecting plate and the high-strength bolt can slide relatively along the long chute and the second connecting plate together; and an SMA wire is arranged between the first connecting plate and the second connecting plate, and the SMA wire applies prestress and is anchored on the first connecting plate and the second connecting plate through the first clamp and the second clamp respectively.
Further, the two second connecting plates are respectively located on the same axis with the two wing plates of the first connecting plate.
Further, the tail ends of the two wing plates of the first connecting plate are of a circular structure, and the radius is equal to that of the circular friction plate.
Further, bolt holes are formed in wing plates of the first connecting plates, and the first connecting plates are tightly connected with the first clamp through common bolts penetrating through the bolt holes; the second connecting plate is provided with a bolt hole, and the second connecting plate passes through the bolt hole through a common bolt to be tightly connected with the second clamp.
The beneficial effects of the invention are as follows:
the invention relates to an SMA wire-friction damper suitable for a single-layer spherical reticulated shell, which is used for deforming the damper when a structure is subjected to earthquake action, so that deformation energy consumption of the SMA wire and friction energy consumption of the structure are generated. Compared with other types of dampers, the damper is suitable for a single-layer spherical reticulated shell structure, is convenient to install, has good energy consumption capability and working stability, and is easy to replace after earthquake.
The damper is provided with a friction plate and an SMA wire between a first connecting plate and a second connecting plate. When the shock is small, the stress of the damper is smaller than the sliding friction force, the damper provides rigidity, and the first connecting plate deforms so as to pull the SMA wire to generate deformation energy consumption; when a large earthquake occurs, the friction force is overcome, the damper structural layer slides relatively, and at the moment, the friction energy consumption and the SMA wire deformation energy consumption work together. The damper has definite stress and simple structure, and is convenient to process, install and replace.
Drawings
Fig. 1: the front three-dimensional structure of the invention is schematically shown;
fig. 2: the back side three-dimensional structure schematic diagram of the invention;
fig. 3: the first connecting plate of the invention is schematically shown;
fig. 4: the second connecting plate is schematically shown in the invention;
the drawings are marked: the friction plate comprises a first connecting plate, a second connecting plate, a 3-round friction plate, a 4-first clamp, a 5-second clamp, a 6-SMA wire, a 7-high-strength bolt and an 8-ordinary bolt.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:
as shown in fig. 1 to 4, an SMA wire-friction damper suitable for a single-layer spherical reticulated shell comprises a first connecting plate 1, two second connecting plates 2, two circular friction plates 3, a first clamp 4, a second clamp 5 and an SMA wire 6.
The first connecting plate 1 is of a Y-shaped structure, two wing plates of the first connecting plate 1 are respectively connected with one ends of the two second connecting plates 2, and the two second connecting plates 2 are respectively located on the same axis with the two wing plates of the first connecting plate 1. The web plate of the first connecting plate and the other ends of the two second connecting plates 2 are respectively welded on a single-layer spherical reticulated shell welding ball. Two bolt holes for fixing the first clamp 4 and one bolt hole for fixing the circular friction plate 3 are respectively formed in the two wing plates of the first connecting plate 1, and the tail ends of the two wing plates of the first connecting plate 1 are of circular structures. The second connecting plate 2 is provided with a long chute for the high-strength bolt 7 to slide and two bolt holes for fixing the second clamp 5.
The circular friction plates 3 are respectively arranged at the connection positions of the first connecting plate 1 and the second connecting plate and are positioned between the first connecting plate 1 and the second connecting plate. The circular friction plate 3 is provided with a bolt hole with the same aperture as that of the bolt hole for fixing the circular friction plate 3 on the first connecting plate 1, the center position of the bolt hole corresponds to the center position of a long chute of the second connecting plate 2, and two high-strength bolts 7 penetrate through the long chute to connect the circular friction plate 3 with the first connecting plate 1, so that the first connecting plate 1, the circular friction plate 3 and the second connecting plate 2 are in tight friction connection, and the circular friction plate 3, the first connecting plate 1 and the high-strength bolts 7 can jointly slide relatively with the second connecting plate 2 along the long chute. Wherein the radius of the circular friction plate 3 is equal to the radius of the wing plate tail end circle of the first connecting plate 1.
An SMA wire 6 is arranged between the two second connecting plates 2 and the first connecting plate 1, and the SMA wire 6 applies prestress and is anchored on the first connecting plate 1 and the two second connecting plates 2 through the first clamp 4 and the two second clamps 5 respectively. The first clamp 4 is provided with a bolt hole with the same aperture as the bolt hole on the first connecting plate 1, the second clamp 5 is provided with a bolt hole with the same aperture as the bolt hole on the second connecting plate 2, the first clamp 4 is tightly connected with the first connecting plate 1 through the bolt hole on the first connecting plate 1, and the second clamp 5 is tightly connected with the second connecting plate 2 through the bolt hole on the second connecting plate 2 through the common bolt 8.
The SMA wire-friction damper is directly welded in the single-layer spherical net shell, and when earthquake action occurs, the second connecting plate 2 and the second clamp 5 slide relatively with the circular friction plate 3 along the long chute, so that deformation energy consumption and structure friction energy consumption of the SMA wire 6 are generated.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are within the scope of the present invention.
Claims (3)
1. The SMA wire-friction damper suitable for the single-layer spherical reticulated shell is characterized by comprising a first connecting plate, two second connecting plates, two circular friction plates, an SMA wire, a first clamp and a second clamp; the first connecting plate is of a Y-shaped structure, two wing plates of the first connecting plate are respectively connected with one ends of two second connecting plates, the two second connecting plates are respectively positioned on the same axis with the two wing plates of the first connecting plate, and the web plates of the first connecting plate and the other ends of the two second connecting plates are respectively fixed on a single-layer spherical reticulated shell welding ball; each second connecting plate is provided with a long chute for sliding the high-strength bolt; the circular friction plate is arranged at the joint of the first connecting plate and the second connecting plate and is positioned between the first connecting plate and the second connecting plate, the high-strength bolt penetrates through the long chute to connect the circular friction plate and the first connecting plate, so that the first connecting plate, the circular friction plate and the second connecting plate are in tight friction connection, and the circular friction plate, the first connecting plate and the high-strength bolt can slide relatively along the long chute and the second connecting plate together; and an SMA wire is arranged between the first connecting plate and the second connecting plate, and the SMA wire applies prestress and is anchored on the first connecting plate and the second connecting plate through the first clamp and the second clamp respectively.
2. An SMA wire-friction damper for a single-layer spherical reticulated shell according to claim 1, characterized in that the two wing plates of the first connecting plate are terminated by a circular structure with a radius equal to the radius of the circular friction plate.
3. The SMA wire-friction damper suitable for a single-layer spherical reticulated shell according to claim 1, wherein the wing plate of the first connecting plate is provided with a bolt hole, and the first connecting plate is tightly connected with the first clamp through a common bolt passing through the bolt hole; the second connecting plate is provided with a bolt hole, and the second connecting plate passes through the bolt hole through a common bolt to be tightly connected with the second clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146959.4A CN108316502B (en) | 2018-02-12 | 2018-02-12 | SMA wire-friction damper suitable for single-layer spherical reticulated shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146959.4A CN108316502B (en) | 2018-02-12 | 2018-02-12 | SMA wire-friction damper suitable for single-layer spherical reticulated shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108316502A CN108316502A (en) | 2018-07-24 |
| CN108316502B true CN108316502B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810146959.4A Active CN108316502B (en) | 2018-02-12 | 2018-02-12 | SMA wire-friction damper suitable for single-layer spherical reticulated shell |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110121309A (en) * | 2010-04-30 | 2011-11-07 | 주식회사 에이브이티 | The friction damper for the earthquake-proof |
| KR101393694B1 (en) * | 2012-11-05 | 2014-05-13 | 조선대학교산학협력단 | Friction damper |
| CN205637781U (en) * | 2016-05-23 | 2016-10-12 | 韩玉婷 | A shock -absorbing structure for building |
| CN206128341U (en) * | 2016-09-07 | 2017-04-26 | 同济大学 | A damping device for large -span structure |
| CN106894506A (en) * | 2017-04-01 | 2017-06-27 | 江南大学 | A kind of large span can breathing structure system |
-
2018
- 2018-02-12 CN CN201810146959.4A patent/CN108316502B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110121309A (en) * | 2010-04-30 | 2011-11-07 | 주식회사 에이브이티 | The friction damper for the earthquake-proof |
| KR101393694B1 (en) * | 2012-11-05 | 2014-05-13 | 조선대학교산학협력단 | Friction damper |
| CN205637781U (en) * | 2016-05-23 | 2016-10-12 | 韩玉婷 | A shock -absorbing structure for building |
| CN206128341U (en) * | 2016-09-07 | 2017-04-26 | 同济大学 | A damping device for large -span structure |
| CN106894506A (en) * | 2017-04-01 | 2017-06-27 | 江南大学 | A kind of large span can breathing structure system |
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| Publication number | Publication date |
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| CN108316502A (en) | 2018-07-24 |
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