CN114293675A - Friction-metal yield composite type graded damper - Google Patents
Friction-metal yield composite type graded damper Download PDFInfo
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- CN114293675A CN114293675A CN202210165156.XA CN202210165156A CN114293675A CN 114293675 A CN114293675 A CN 114293675A CN 202210165156 A CN202210165156 A CN 202210165156A CN 114293675 A CN114293675 A CN 114293675A
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- 239000002184 metal Substances 0.000 title claims abstract description 63
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 63
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract description 14
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
A friction-metal yield composite type graded damper is characterized in that a first energy dissipation element (2), an L-shaped clamping plate (3) and a U-shaped supporting piece (4) are sequentially and symmetrically arranged on two sides of a T-shaped core plate (1); the T-shaped core plate (1), the first energy dissipation element (2) and the L-shaped clamping plate (3) are fixedly connected through a first connecting bolt (6), the U-shaped supporting piece (4) and the L-shaped clamping plate (3) are fixedly connected through a second connecting bolt (7), and the second energy dissipation element (5) and the U-shaped supporting piece (4) are fixedly connected through a bolt mechanism. Under small displacement, only the friction damper works, and the friction damper does not need to be replaced after an earthquake; under large displacement, the friction damper consumes energy, the metal damper participates in energy consumption, and only the second energy consumption element needs to be replaced after the earthquake. Compared with the traditional displacement-dependent damper, the maintenance and replacement cost can be reduced to the minimum by limiting the working range of different types of dampers according to earthquake requirements.
Description
Technical Field
The invention belongs to the technical field of energy dissipation and shock absorption of engineering structures, and particularly relates to a friction-metal yield composite type graded damper technology.
Background
Earthquakes and winds are extremely common natural phenomena, strong earthquakes and strong winds can become natural disasters which are unpredictable and extremely destructive, and a large number of ground buildings and structures are damaged or even collapsed, so that the life and property safety of human beings is threatened all the time. In order to avoid or reduce the damage of the main structure caused by vibration, a large number of scholars are continuously searching for various new technologies and new methods to reduce the damage of the vibration to the building structure. With the progress of science and technology and the expansion of research direction, the control theory gradually becomes an important component in the field of civil engineering structure vibration. Some researchers have proposed energy dissipation and vibration reduction techniques to reduce the damage of vibration to building structures. The energy dissipation and shock absorption technology is characterized in that a damper, a shear wall, an energy dissipation support and the like are additionally arranged in a structure, the structure enters an inelastic state firstly, energy input into the structure is consumed, the dynamic response of the main structure is reduced, and the purpose of protecting the main structure is achieved.
The middle phase correlation type damper in the vibration damping damper comprises a metal damper and a friction damper. The traditional friction damper cannot adjust the magnitude of the sliding force, if the sliding force is designed according to a small earthquake, the energy consumption is low, and the damper cannot achieve the vibration damping effect under the large earthquake; the traditional metal damper generally uses a single energy consumption material, and the designed yielding displacement is determined as long as the structure is determined, so that the damper under a small earthquake generally only provides rigidity, the structure dissipates energy, and when the yielding displacement is reached under a large earthquake, the damper participates in energy consumption. Therefore, most of the existing displacement-related dampers are single dampers, the energy consumption form is single, and the energy consumption cannot be graded under small and large earthquakes.
Disclosure of Invention
The invention aims to provide a friction-metal yield composite type graded damper.
The invention relates to a friction-metal yield composite type graded damper which comprises a T-shaped core plate 1, a first energy dissipation element 2, an L-shaped clamping plate 3, a U-shaped supporting piece 4, a second energy dissipation element 5, a first connecting bolt 6 and a second connecting bolt 7, wherein the first energy dissipation element 2, the L-shaped clamping plate 3 and the U-shaped supporting piece 4 are sequentially and symmetrically arranged on two sides of the T-shaped core plate 1; the T-shaped core plate 1, the first energy dissipation element 2 and the L-shaped clamping plate 3 are fixedly connected through a first connecting bolt 6, the U-shaped support piece 4 and the L-shaped clamping plate 3 are fixedly connected through a second connecting bolt 7, and the second energy dissipation element 5 and the U-shaped support piece 4 are fixedly connected through a bolt mechanism.
The invention has the beneficial effects that: most of the existing displacement-related dampers are single dampers, so that not only is the energy consumption form single, but also the energy cannot be consumed in stages under small and large earthquakes. Compared with the prior art, the invention has the following advantages:
1. the invention combines friction energy consumption and metal yield energy consumption to realize graded energy consumption. Under small displacement, the friction damper consumes energy; under large displacement, the metal damper participates in energy consumption. By limiting the working range of different types of dampers according to seismic requirements, maintenance and replacement costs can be minimized, ultimately saving life cycle costs. 2. The invention can realize displacement adjustment by changing the length of the strip hole. 3. According to the invention, by adjusting the pre-tightening force of the first bolt, the surface pressure can be adjusted, the friction energy consumption capability is changed, and the influence of the environmental temperature on the energy consumption is small. 4. The invention has simple structure and low cost, can be produced in a standardized way by a processing factory and is convenient to assemble, disassemble and replace.
Drawings
Fig. 1 is a schematic three-dimensional structure of the present invention, fig. 2 is a schematic front view of the present invention, fig. 3 is a schematic three-dimensional structure of a T-core plate of the present invention, fig. 4 is a schematic three-dimensional structure of a first energy dissipating member of the present invention, fig. 5 is a schematic three-dimensional structure of an L-shaped splint of the present invention, fig. 6 is a schematic three-dimensional structure of a U-shaped support of the present invention, fig. 7 is a schematic three-dimensional structure of a second energy dissipating member of the present invention, fig. 8 is a schematic three-dimensional structure of a first connecting bolt of the present invention, and fig. 9 is a schematic flow chart of an assembly structure of the present invention; reference numerals and corresponding names: 1-a T-shaped core plate; 1-metal core plate; 1-2-upper connecting plate; 2-a first dissipative element; 3-L-shaped splint; 3-1-metal splint; 3-2-lower connecting plate; 4-a U-shaped support member; 5-a second dissipative element; 6-first connecting bolt; 6-1-screw; 6-2-nut; 6-3-belleville spring washer; 7-second connecting bolt.
Detailed Description
The invention relates to a friction-metal yield composite type graded damper which comprises a T-shaped core plate 1, a first energy dissipation element 2, an L-shaped clamping plate 3, a U-shaped supporting piece 4, a second energy dissipation element 5, a first connecting bolt 6 and a second connecting bolt 7, wherein the first energy dissipation element 2, the L-shaped clamping plate 3 and the U-shaped supporting piece 4 are sequentially and symmetrically arranged on two sides of the T-shaped core plate 1; the T-shaped core plate 1, the first energy dissipation element 2 and the L-shaped clamping plate 3 are fixedly connected through a first connecting bolt 6, the U-shaped support piece 4 and the L-shaped clamping plate 3 are fixedly connected through a second connecting bolt 7, and the second energy dissipation element 5 and the U-shaped support piece 4 are fixedly connected through a bolt mechanism.
In the above-mentioned hierarchical damper, the T-shaped core plate 1 is composed of the metal core plate 1-1 and the upper connecting plate 1-2, the metal core plate 1-1 is provided with the i-shaped elongated hole and the ii-shaped elongated hole, and the upper connecting plate 1-2 is provided with the bolt mounting hole.
In the above-mentioned hierarchical damper, the L-shaped clamp plate 3 is composed of the metal clamp plate 3-1 and the lower connecting plate 3-2, the metal clamp plate 3-1 is provided with the bolt connecting hole and the threaded hole, the middle part is provided with the i-shaped elongated hole, and the lower connecting plate 3-2 is provided with the bolt mounting hole.
In the above-mentioned stepped damper, the U-shaped support member 4 is formed by bending a common steel plate, bolt connection holes are formed at both ends, a circular hole is formed in the middle, and an internal thread structure is formed in the circular hole.
In the hierarchical damper, the first energy dissipation element 2 is a brake pad or a red copper plate; the planar shape of the first energy dissipation element 2 is rectangular, the middle part is provided with an I-shaped long hole, and the two sides are provided with bolt connecting holes.
In the hierarchical damper, the second energy dissipation element 5 is a steel bar with a low yield point; external threads are arranged at two ends of the second energy dissipation element 5, and the specification of the external threads is matched with that of the internal threads of the middle round hole of the U-shaped supporting piece 4.
In the hierarchical damper, the positions, the sizes and the numbers of the II-shaped long strip holes on the metal core plate 1-1, the first energy dissipation elements 2 and the bolt connecting holes on the metal clamping plate 3-1 are matched; the positions, the sizes and the number of the bolt connecting holes on the U-shaped supporting piece 4 are matched with those of the threaded holes on the metal clamping plate 3-1.
In the hierarchical damper, the plurality of disc-shaped spring washers 6-3 are arranged among the bolt 6-1, the nut 6-2 and the metal clamping plate 3-1 of the first connecting bolt 6, so that the dissipation of the pretightening force of the first connecting bolt 6 can be prevented; the belleville washer 6-3 conforms to the specifications of the first connecting bolt 6.
The above-mentioned stepped damper can realize the adjustment of the specification of the damper by changing the height H of the U-shaped supporting member 4 and the length L of the second dissipative element 5.
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: as shown in fig. 1 to 9, the invention relates to a friction-metal yield composite type graded damper, which comprises a T-shaped core plate 1, a first energy dissipation element 2, an L-shaped clamp plate 3, a U-shaped support member 4, a second energy dissipation element 5, a first connecting bolt 6 and a second connecting bolt 7. The first energy dissipation element 2, the L-shaped clamping plate 3 and the U-shaped supporting piece 4 are sequentially and symmetrically arranged on two sides of the T-shaped core plate; the T-shaped core plate 1, the first energy dissipation element 2 and the L-shaped clamping plate 3 are fixedly connected through a first connecting bolt 6, the U-shaped support piece 4 and the L-shaped clamping plate 3 are fixedly connected through a second connecting bolt 7, and the second energy dissipation element 5 and the U-shaped support piece 4 are fixedly connected through a bolt mechanism.
The T-shaped core plate 1 consists of a metal core plate 1-1 and an upper connecting plate 1-2, wherein the metal core plate 1-1 is provided with I-shaped long strip holes and II-shaped long strip holes, and the upper connecting plate 1-2 is provided with bolt mounting holes; the L-shaped clamping plate 3 consists of a metal clamping plate 3-1 and a lower connecting plate 3-2, wherein a bolt connecting hole and a threaded hole are formed in the metal clamping plate 3-1, an I-shaped long hole is formed in the middle of the metal clamping plate, and a bolt mounting hole is formed in the lower connecting plate 3-2; the two ends of the U-shaped supporting piece 4 are provided with bolt connecting holes, the middle part of the U-shaped supporting piece is provided with a round hole, and the round hole is provided with an internal thread structure; the planar shape of the first energy dissipation element 2 is rectangular, the middle part is provided with an I-shaped long hole, and the two sides are provided with bolt connecting holes; external threads are arranged at two ends of the second energy dissipation element 5, and the specification of the external threads is matched with that of the internal threads of the circular hole in the middle of the U-shaped supporting piece 4; the positions, the sizes and the number of the II-shaped long holes on the metal core plate 1-1, the first energy dissipation elements 2 and the bolt connecting holes on the metal clamping plate 3-1 are matched; the positions, the sizes and the number of the bolt connecting holes on the U-shaped supporting piece 4 are matched with those of the threaded holes on the metal clamping plate 3-1.
In the friction-metal yield composite type graded damper, the U-shaped supporting piece 4 is formed by bending a common steel plate.
In the friction-metal yield composite type grading damper, the second energy dissipation element 5 is made of steel bars with low yield points, and the two ends of the steel bars are provided with the hexagonal heads, so that the damper is convenient to mount.
In the friction-metal yield composite type graded damper, the first connecting bolt 6 comprises a screw rod 6-1, a nut 6-2 and a disc spring washer 6-3; the screw 6-1 penetrates through the disc spring washer 6-3, the metal clamping plate 3-1, the first energy dissipation element 2, the metal core plate 1-1, the first energy dissipation element 2, the metal clamping plate 3-1 and the disc spring washer 6-3 in sequence and then is matched with the nut 6-2.
According to the friction-metal yield composite type graded damper, the disc spring washers 6-3 are arranged in a plurality of ways, so that the dissipation of the pretightening force of the first connecting bolt 6 is prevented.
The working principle of the invention is as follows: when the energy dissipation and shock absorption device is used for energy dissipation and shock absorption of a structure, the upper connecting plate 1-2 and the lower connecting plate 3-2 are connected with the structure through the connecting units. When earthquake happens, the building structure generates interlayer displacement, so that the upper connecting plate and the lower connecting plate of the damper are driven to generate relative displacement.
When being tensioned: the upper connecting plate moves upwards to drive the metal core plate and the left and right first energy dissipation elements to generate relative displacement for friction energy dissipation; along with the increase of the relative displacement, the edge of the I-shaped long hole on the metal core plate contacts the surface of the second dissipative element, and the second dissipative element is pushed by the metal core plate to generate deformation to dissipate energy.
When being pressed: the edge of the I-shaped long hole of the metal core plate is separated from the surface of the second energy dissipation element, and the metal core plate and the left and right first energy dissipation elements generate relative displacement to rub and dissipate energy; along with the increase of the relative displacement, the edge of the I-shaped long hole of the metal core plate contacts the second dissipative element again, and the second dissipative element is reversely pushed by the metal core plate to generate deformation to dissipate energy.
The above description is only for the purpose of describing the preferred embodiments of the present invention and is not intended to limit the present invention, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as being included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a compound hierarchical attenuator of friction-metal yield, includes T type core board (1), first power consumption component (2), L type splint (3), U type support piece (4), second power consumption component (5), first connecting bolt (6), second connecting bolt (7), its characterized in that: the first energy dissipation element (2), the L-shaped clamping plate (3) and the U-shaped supporting piece (4) are sequentially and symmetrically arranged on two sides of the T-shaped core plate (1); the T-shaped core plate (1), the first energy dissipation element (2) and the L-shaped clamping plate (3) are fixedly connected through a first connecting bolt (6), the U-shaped supporting piece (4) and the L-shaped clamping plate (3) are fixedly connected through a second connecting bolt (7), and the second energy dissipation element (5) and the U-shaped supporting piece (4) are fixedly connected through a bolt mechanism.
2. The friction-metal yielding composite type stepped damper according to claim 1, characterized in that: the T-shaped core plate (1) is composed of a metal core plate (1-1) and an upper connecting plate (1-2), wherein the metal core plate (1-1) is provided with I-shaped long holes and II-shaped long holes, and the upper connecting plate (1-2) is provided with bolt mounting holes.
3. The friction-metal yielding composite type stepped damper according to claim 1, characterized in that: the L-shaped clamping plate (3) is composed of a metal clamping plate (3-1) and a lower connecting plate (3-2), a bolt connecting hole and a threaded hole are formed in the metal clamping plate (3-1), an I-shaped long hole is formed in the middle of the metal clamping plate, and a bolt mounting hole is formed in the lower connecting plate (3-2).
4. The friction-metal yielding composite type stepped damper according to claim 1, characterized in that: the U-shaped supporting piece (4) is formed by bending a common steel plate, bolt connecting holes are formed in two ends of the U-shaped supporting piece, a round hole is formed in the middle of the U-shaped supporting piece, and an internal thread structure is formed in the round hole.
5. The friction-metal yielding composite type stepped damper according to claim 1, characterized in that: the first energy dissipation element (2) is a brake pad or a red copper plate; the planar shape of the first energy dissipation element (2) is rectangular, the middle part is provided with an I-shaped long hole, and the two sides are provided with bolt connecting holes.
6. The friction-metal yielding composite type stepped damper according to claim 1, characterized in that: the second energy dissipation element (5) is made of a steel bar with a low yield point; external threads are arranged at two ends of the second energy dissipation element (5), and the specifications of the external threads are matched with those of the internal threads of the middle round hole of the U-shaped supporting piece (4).
7. The friction-metal yielding composite type stepped damper according to claim 1, characterized in that: the positions, the sizes and the numbers of the II-shaped long strip holes on the metal core plate (1-1), the first energy dissipation element (2) and the bolt connecting holes on the metal clamping plate (3-1) are matched; the positions, the sizes and the number of the bolt connecting holes on the U-shaped supporting piece (4) are matched with the threaded holes on the metal clamping plate (3-1).
8. The friction-metal yielding composite type stepped damper according to claim 1, characterized in that: a plurality of disc-shaped spring washers (6-3) are arranged among the bolt (6-1), the nut (6-2) and the metal clamping plate (3-1) of the first connecting bolt (6), so that the dissipation of the pretightening force of the first connecting bolt (6) can be prevented; the specification of the disc spring washer (6-3) is matched with that of the first connecting bolt (6).
9. The friction-metal yielding composite type stepped damper according to claim 1, characterized in that: by changing the height H of the U-shaped supporting piece (4) and the length L of the second energy dissipation element (5), the specification of the damper can be adjusted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210165156.XA CN114293675A (en) | 2022-02-23 | 2022-02-23 | Friction-metal yield composite type graded damper |
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| CN202210165156.XA CN114293675A (en) | 2022-02-23 | 2022-02-23 | Friction-metal yield composite type graded damper |
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| CN215054165U (en) * | 2021-04-21 | 2021-12-07 | 北京市建筑设计研究院有限公司 | Anti-buckling double-yield-point shearing type mild steel damper with limiting function |
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