CN113719176A - Metal damper coated with polyurea elastomer - Google Patents
Metal damper coated with polyurea elastomer Download PDFInfo
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- CN113719176A CN113719176A CN202110879153.8A CN202110879153A CN113719176A CN 113719176 A CN113719176 A CN 113719176A CN 202110879153 A CN202110879153 A CN 202110879153A CN 113719176 A CN113719176 A CN 113719176A
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- China
- Prior art keywords
- connecting part
- polyurea elastomer
- metal damper
- upper connecting
- lower connecting
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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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
- E04H9/0237—Structural braces with damping devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a metal damper coated with a polyurea elastomer, which comprises a shearing energy consumption unit (5), an upper connecting part (1) and a lower connecting part (2), wherein the upper connecting part (1) and the lower connecting part (2) are respectively horizontally arranged at the top and the bottom of the shearing energy consumption unit (5) one above the other, and a polyurea elastomer coating (6) is coated on the shearing energy consumption unit (5), the upper connecting part (1) or the lower connecting part (2). Compared with the prior art, the damper device has the advantages that the energy consumption capability of the damper is improved, the defects of poor fire resistance and poor corrosion resistance of the metal damper are improved in a targeted manner, the structure is simple, the manufacturing difficulty is low, and the damper device is a simple and convenient metal damper device.
Description
Technical Field
The invention belongs to the technical field of vibration control, and particularly relates to a metal damper coated with a polyurea elastomer.
Background
Energy dissipation and shock absorption of a building structure mean that a proper energy dissipation part is arranged in the building structure, and the energy dissipation part can be composed of an energy dissipation and shock absorption device and supporting members such as inclined struts, walls, beams or nodes. The metal damper is an energy dissipation and shock absorption device with excellent energy dissipation performance, simple structure, convenient manufacture, low manufacturing cost and easy replacement. The damping device can be matched with a shock insulation support or a shock insulation system to serve as an energy consumption unit or a limiting device, and can be independently used in a building structure to serve as an energy consumption device to provide additional damping and rigidity, so that the damping device has a wide application prospect.
Compared with other types of dampers such as viscous dampers, viscoelastic dampers, friction dampers and the like, the metal damper has the advantages of low manufacturing and maintenance cost, easiness in processing and manufacturing, stable hysteresis performance, convenience in replacement and the like, so that the metal damper is widely applied to the field of vibration control of building engineering.
The metal damper mainly applied at present has an X-shaped stiffening damping device, a triangular stiffening damping device and an opening stiffening damping device. The metal energy dissipater has good energy dissipation performance, but does not have fireproof and corrosion-resistant performance, and is easy to lose effectiveness.
Disclosure of Invention
The invention aims to provide a metal damper coated with polyurea elastomer.
The purpose of the invention is realized by the following technical scheme:
the metal damper comprises a shearing energy consumption unit, an upper connecting part and a lower connecting part, wherein the upper connecting part and the lower connecting part are respectively horizontally arranged at the top and the bottom of the shearing energy consumption unit one on the other, polyurea elastomer coatings are coated on the shearing energy consumption unit, the upper connecting part or the lower connecting part, namely the shearing energy consumption unit, the upper connecting part or the lower connecting part are coated, or any one or any two coatings can be selected according to actual conditions, and the coatings are large-area coatings.
The shearing energy consumption unit comprises a shearing steel plate and a plurality of paired stiffening rib plates, wherein the shearing steel plate and the stiffening rib plates are vertically arranged, the paired stiffening rib plates are arranged on two sides of the shearing steel plate, the upper end and the lower end of the shearing steel plate are respectively connected with an upper connecting part and a lower connecting part, and the upper end and the lower end of the stiffening rib plates are respectively connected with the upper connecting part and the lower connecting part. The stiffening rib plate can ensure the stability of the shearing steel plate in the stress process, and is favorable for the energy consumption of the metal damper.
The shearing steel plates and the pair of stiffening rib plates are distributed in a cross shape.
The shearing steel plate and the stiffening rib plate are connected by welding.
The shear steel plate is connected with the upper connecting part and the lower connecting part by welding or bolts.
The stiffening rib plates are connected with the upper connecting part and the lower connecting part by welding or bolts.
The upper connecting member is plate-shaped.
The lower connecting member is plate-shaped.
The thickness of the polyurea elastomer coating is not less than 3 mm.
The shearing energy consumption unit, the upper connecting part and the lower connecting part are made of metal materials, and the surface coated with the polyurea elastomer coating is subjected to rough treatment in advance. The polyurea elastomer coating and the surface of the metal damper can be effectively bonded conveniently.
The metal damper is axially symmetric as a whole, the horizontal length of the upper connecting part is greater than that of the shearing steel plate, and the horizontal width of the upper connecting part is greater than the sum of the length of the paired stiffening rib plates and the width of the shearing steel plate. The joint of the shearing steel plate and the upper connecting part is positioned in the middle of the upper connecting part, the joint of the shearing steel plate and the lower connecting part is also positioned in the middle of the lower connecting part, and the plurality of stiffening rib plates are symmetrical about the long central line of the shearing steel plate and the short central line of the shearing steel plate, so the axial symmetry means that the metal damper is symmetrical up and down and also symmetrical left and right.
When the metal damper is used for stabilizing a building main body, the upper connecting part is provided with a plurality of upper connecting holes, the lower connecting part is provided with a plurality of lower connecting holes, and high-strength bolts penetrate through the upper connecting holes or the lower connecting holes to connect the upper connecting part or the lower connecting part with the building main body. When the building main body connected with the metal damper displaces, the shearing energy consumption unit can bear shearing force and consume input energy, so that the vibration of the building structure is controlled.
An upper connecting device and a lower connecting device are preset on the building main body, the upper connecting device is connected with the upper connecting part, and the lower connecting device is connected with the lower connecting part, so that the purpose of mounting the metal damper is achieved.
The polyurea elastomer is generated by the reaction of an isocyanic acid component and an amino compound component, is an environment-friendly solvent-free coating, and is commonly used in the fields of corrosion resistance, wear resistance, water resistance and the like. The polyurea elastomer has certain strain rate sensitivity, and has a longer elastic stage when high strain rate is acted, and the elastic modulus can reach 180 MPa-260 MPa. In addition, the polyurea elastomer has higher tensile strength and elongation at break, so that the polyurea elastomer has the capability of bearing large deformation, and can resist tearing damage brought by high strain rate loading so as to ensure the structural integrity. And the polyurea elastomer has extremely high elastic modulus under the action of high strain rate. Through reasonable formula design, the polyurea elastomer has the performances of high impact resistance, high toughness, high strength, corrosion resistance, ageing resistance, high temperature resistance and the like. The polyurea elastomer is sprayed on the metal damper, so that the deformation capability of the metal damper can be further improved, the energy consumption capability of the damper is improved, and meanwhile, the fireproof and corrosion-resistant performance of the metal damper is improved, which has important significance on the performance of the vibration control capability of the metal damper.
The invention discloses a metal damper coated with a polyurea elastomer, which comprises an upper connecting part, a lower connecting part, a shearing energy consumption unit and a polyurea elastomer coating, wherein the upper connecting part, the lower connecting part and the shearing energy consumption unit are made of metal materials, and the polyurea elastomer coating is uniformly sprayed on the surfaces of the metal materials. The polyurea elastomer coating has the performance characteristics of impact resistance, high temperature resistance, good toughness, corrosion resistance and the like, and the polyurea elastomer coating is coated on the metal damper, so that the integral deformation capacity of the damper is further improved, and the energy consumption capacity of the damper in strong vibration environments such as earthquakes is improved. Meanwhile, the polyurea elastomer coating can also improve the fire resistance and corrosion resistance of the metal damper and reduce the failure probability of the metal damper.
The polyurea elastomer coating is utilized to further improve the deformation capacity of the metal damper and improve the energy consumption capacity of the damper; the invention utilizes the advantages of corrosion resistance, high temperature resistance and the like of the polyurea elastomer material to pertinently improve the defects of poor fire resistance and poor corrosion resistance of the metal damper. The metal damper device is simple in structure, low in manufacturing difficulty and simple and convenient.
Drawings
FIG. 1 is a schematic view showing the overall construction of a metal damper coated with a polyurea elastomer (in the figure, a cut-out section is shown);
FIG. 2 is a front view of a metal damper coated with a polyurea elastomer;
FIG. 3 is a bottom view at section A-A of FIG. 2;
fig. 4 is a left side view at section B-B in fig. 2.
In the figure: 1-an upper connecting member; 101-upper connection hole; 2-lower connecting member; 201-lower connection hole; 3-shearing a steel plate; 4-stiffening rib plates; 5-a shearing energy consumption unit; 6-polyurea elastomer coating.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
As shown in fig. 1, 2, 3 and 4, the polyurea elastomer coated metal damper is axisymmetric as a whole, and includes a shearing energy consumption unit 5, an upper connecting member 1 and a lower connecting member 2, wherein the upper connecting member 1 is plate-shaped, the lower connecting member 2 is plate-shaped, the upper connecting member 1 and the lower connecting member 2 are horizontally arranged on the top and bottom of the shearing energy consumption unit 5 one above the other, and a polyurea elastomer coating 6 (obtained by coating a commercially available polyurea elastomer in a coating method according to the prior art) is coated on the surface of the shearing energy consumption unit 5, the upper connecting member 1 or the lower connecting member 2 in a large area, and the thickness of the polyurea elastomer coating 6 is not less than 3 mm. The shearing energy consumption unit 5 comprises a shearing steel plate 3 and a plurality of paired stiffening rib plates 4, the shearing steel plate 3 and the stiffening rib plates 4 are vertically arranged, the paired stiffening rib plates 4 are respectively arranged at two sides of the shearing steel plate 3, the shearing steel plate 3 and the paired stiffening rib plates 4 are distributed in a cross manner, the upper end and the lower end of the shearing steel plate 3 are respectively connected with an upper connecting part 1 and a lower connecting part 2, the upper end and the lower end of the stiffening rib plates 4 are respectively connected with the upper connecting part 1 and the lower connecting part 2, the joint of the shearing steel plate 3 and the upper connecting part 1 is positioned in the middle of the upper connecting part 1, the joint of the shearing steel plate 3 and the lower connecting part 2 is also positioned in the middle of the lower connecting part 2, the stiffening rib plates 4 are symmetrical about the long central line of the shearing steel plate 3 and also about the short central line of the shearing steel plate 3, and the stiffening rib plates 4 are connected by welding, the shear steel plate 3 is connected with the upper connecting part 1 and the lower connecting part 2 by welding, and the stiffening rib plate 4 is connected with the upper connecting part 1 and the lower connecting part 2 by welding. The horizontal length of the upper connecting member 1 is greater than the horizontal length of the shear steel plate 3, and the horizontal width of the upper connecting member 1 is greater than the sum of the length of the pair of stiffening ribs 4 plus the width of the shear steel plate 3.
Example 2
As shown in fig. 1, 2, 3 and 4, a polyurea elastomer-coated metal damper is the same as that of example 1 except that a shear steel plate 3 is connected to an upper connecting member 1 and a lower connecting member 2 by bolts, and a reinforcing rib plate 4 is connected to the upper connecting member 1 and the lower connecting member 2 by bolts.
Example 3
As shown in fig. 1, 2, 3 and 4, a polyurea elastomer-coated metal damper is the same as that of example 1 except that the shearing energy consuming unit 5, the upper connecting member 1 and the lower connecting member 2 are made of metal, and the surface coated with the polyurea elastomer coating 6 is roughened by mechanical polishing to a roughness of 50 to 100 μm.
Example 4
As shown in fig. 1, 2, 3 and 4, when the metal damper is used for stabilizing a building body, a plurality of upper connection holes 101 are formed in an upper connection member 1, the plurality of upper connection holes 101 are distributed in two rows, a plurality of lower connection holes 201 are formed in a lower connection member 2, the plurality of lower connection holes 201 are distributed in two rows, and high-strength bolts are respectively inserted through the upper connection holes 101 or the lower connection holes 201 to connect the upper connection member 1 or the lower connection member 2 with the building body.
Example 5
As shown in fig. 1, 2, 3, and 4, when the metal damper is used for stabilizing a building main body, an upper connecting device and a lower connecting device are preset on the building main body, a plurality of upper connecting holes 101 are arranged on an upper connecting part 1, the plurality of upper connecting holes 101 are distributed in two rows, a plurality of lower connecting holes 201 are arranged on a lower connecting part 2, the plurality of lower connecting holes 201 are distributed in two rows, a high-strength bolt is adopted between the upper connecting device and the upper connecting part 1 to pass through the upper connecting holes 101, and a high-strength bolt is adopted between the lower connecting device and the lower connecting part 2 to pass through the lower connecting holes 201 to be connected.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The metal damper coated with the polyurea elastomer is characterized by comprising a shearing energy consumption unit (5), an upper connecting part (1) and a lower connecting part (2), wherein the upper connecting part (1) and the lower connecting part (2) are horizontally arranged at the top and the bottom of the shearing energy consumption unit (5) one on the other, and the polyurea elastomer coating (6) is coated on the shearing energy consumption unit (5), the upper connecting part (1) or the lower connecting part (2).
2. The polyurea elastomer coated metal damper according to claim 1, wherein the shearing energy dissipation unit (5) comprises a shearing steel plate (3) and a plurality of paired stiffening rib plates (4), the shearing steel plate (3) and the stiffening rib plates (4) are both vertically arranged, the paired stiffening rib plates (4) are respectively arranged at two sides of the shearing steel plate (3), the upper end and the lower end of the shearing steel plate (3) are respectively connected with the upper connecting part (1) and the lower connecting part (2), and the upper end and the lower end of the stiffening rib plates (4) are respectively connected with the upper connecting part (1) and the lower connecting part (2).
3. The polyurea elastomer-coated metal damper according to claim 2, wherein the shear steel plate (3) and the pair of reinforcing ribs (4) are distributed in a cross shape.
4. The polyurea elastomer-coated metal damper according to claim 2, wherein the shear steel plate (3) and the stiffener plate (4) are connected by welding.
5. The polyurea elastomer-coated metal damper according to claim 2, wherein the shear steel plate (3) is connected to the upper connecting member (1) and the lower connecting member (2) by welding or bolts;
the stiffening rib plates (4) are connected with the upper connecting part (1) and the lower connecting part (2) by welding or bolts.
6. The polyurea elastomer-coated metal damper according to claim 1, wherein the upper connecting member (1) has a plate shape;
the lower connecting member (2) is plate-shaped.
7. The polyurea elastomer-coated metal damper according to claim 1, wherein the polyurea elastomer coating (6) has a thickness of not less than 3 mm.
8. The polyurea elastomer-coated metal damper according to claim 1, wherein the shearing energy dissipating unit (5), the upper connecting member (1) and the lower connecting member (2) are made of metal, and the surface coated with the polyurea elastomer coating (6) is roughened in advance.
9. The polyurea elastomer-coated metal damper according to claim 1, wherein when the metal damper is used for the stabilization of a building body, a plurality of upper connection holes (101) are provided on the upper connection member (1), a plurality of lower connection holes (201) are provided on the lower connection member (2), and the upper connection member (1) or the lower connection member (2) is connected to the building body by using high-strength bolts through the upper connection holes (101) or the lower connection holes (201).
10. The polyurea elastomer-coated metal damper according to claim 9, wherein an upper connecting means and a lower connecting means are provided on the building body in advance, the upper connecting means is connected to the upper connecting member (1), and the lower connecting means is connected to the lower connecting member (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110879153.8A CN113719176A (en) | 2021-08-02 | 2021-08-02 | Metal damper coated with polyurea elastomer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110879153.8A CN113719176A (en) | 2021-08-02 | 2021-08-02 | Metal damper coated with polyurea elastomer |
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| CN113719176A true CN113719176A (en) | 2021-11-30 |
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| CN202110879153.8A Pending CN113719176A (en) | 2021-08-02 | 2021-08-02 | Metal damper coated with polyurea elastomer |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0044956A1 (en) * | 1980-07-30 | 1982-02-03 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Damping coating |
| CN201053468Y (en) * | 2007-05-25 | 2008-04-30 | 黄秀云 | Modified shearing viscoelasticity damper |
| CN101665654A (en) * | 2009-08-16 | 2010-03-10 | 青岛理工大学 | Spraying type polyurethane-carbamide damping vibration attenuation noise-reduction protection material |
| CN202731009U (en) * | 2012-08-03 | 2013-02-13 | 广州容联建筑科技有限公司 | Combined shear type metal damper |
| CN205242668U (en) * | 2015-12-23 | 2016-05-18 | 河北鸿筑源科技有限公司 | Shearing type metal surrender attenuator |
| CN105926797A (en) * | 2016-06-21 | 2016-09-07 | 华侨大学 | Buckling constraint shear type damper |
| CN110823001A (en) * | 2019-11-28 | 2020-02-21 | 青岛理工大学 | Graded energy-consumption composite anti-explosion protective armor and preparation thereof |
-
2021
- 2021-08-02 CN CN202110879153.8A patent/CN113719176A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0044956A1 (en) * | 1980-07-30 | 1982-02-03 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Damping coating |
| CN201053468Y (en) * | 2007-05-25 | 2008-04-30 | 黄秀云 | Modified shearing viscoelasticity damper |
| CN101665654A (en) * | 2009-08-16 | 2010-03-10 | 青岛理工大学 | Spraying type polyurethane-carbamide damping vibration attenuation noise-reduction protection material |
| CN202731009U (en) * | 2012-08-03 | 2013-02-13 | 广州容联建筑科技有限公司 | Combined shear type metal damper |
| CN205242668U (en) * | 2015-12-23 | 2016-05-18 | 河北鸿筑源科技有限公司 | Shearing type metal surrender attenuator |
| CN105926797A (en) * | 2016-06-21 | 2016-09-07 | 华侨大学 | Buckling constraint shear type damper |
| CN110823001A (en) * | 2019-11-28 | 2020-02-21 | 青岛理工大学 | Graded energy-consumption composite anti-explosion protective armor and preparation thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吕平等: "新型阻尼型桥梁支座防护材料研究进展", 《材料导报》 * |
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Application publication date: 20211130 |
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