CN222120599U - Buckling-restrained multistage energy-consumption metal damper - Google Patents
Buckling-restrained multistage energy-consumption metal damper Download PDFInfo
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- CN222120599U CN222120599U CN202420187929.9U CN202420187929U CN222120599U CN 222120599 U CN222120599 U CN 222120599U CN 202420187929 U CN202420187929 U CN 202420187929U CN 222120599 U CN222120599 U CN 222120599U
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- 239000002184 metal Substances 0.000 title claims abstract description 30
- 238000005265 energy consumption Methods 0.000 title description 30
- 238000010008 shearing Methods 0.000 claims description 34
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000000452 restraining effect Effects 0.000 claims description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 64
- 230000035939 shock Effects 0.000 description 17
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000007123 defense Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本实用新型提供了一种防屈曲多阶段耗能金属阻尼器，涉及减震结构技术领域。上连接板、下连接板，以及设置于所述上连接板与下连接板之间的剪切耗能板；所述剪切耗能板的两侧相对设置有与其垂直的三角形耗能板，所述三角形耗能板的底端与所述下连接板连接，其上端与所述上连接板之间形成有间隔；所述上连接板的底面连接有若干顶板块，且所述顶板块对称分布在所述三角形耗能板上端的两侧，以在所述剪切耗能板受力弯曲至相应程度时与所述三角形耗能板接触，并使所述三角形耗能板受力。通过本方案提高了金属阻尼器的耗能能力和适应性，从而更好地满足不同地震条件下的需求。
The utility model provides an anti-buckling multi-stage energy-absorbing metal damper, which relates to the technical field of shock-absorbing structures. An upper connecting plate, a lower connecting plate, and a shear energy-absorbing plate arranged between the upper connecting plate and the lower connecting plate; triangular energy-absorbing plates perpendicular to the shear energy-absorbing plate are arranged on both sides of the shear energy-absorbing plate, the bottom end of the triangular energy-absorbing plate is connected to the lower connecting plate, and a gap is formed between the upper end and the upper connecting plate; a plurality of top plates are connected to the bottom surface of the upper connecting plate, and the top plates are symmetrically distributed on both sides of the upper end of the triangular energy-absorbing plate, so as to contact the triangular energy-absorbing plate when the shear energy-absorbing plate is bent to a corresponding degree under force, and the triangular energy-absorbing plate is subjected to force. This scheme improves the energy-absorbing capacity and adaptability of the metal damper, thereby better meeting the needs under different earthquake conditions.
Description
Technical Field
The utility model relates to the technical field of damping structures, in particular to an buckling-preventing multistage energy-consuming metal damper.
Background
The traditional earthquake-resistant design method of the building mainly depends on the rigidity, strength and ductility of the bearing structure to resist the earthquake so as to meet the three-level performance targets of small earthquake, medium earthquake, repairability and large earthquake. Although the traditional earthquake-resistant design method of the building can ensure that the building does not collapse, the damage caused by the earthquake is difficult to repair and still can seriously damage the property of human beings. Different from the traditional earthquake-proof design method of the building, the energy dissipation and shock absorption technology mainly installs a damper at the weak part of the main body structure which is easy to be damaged. Under the action of an earthquake, the damper generates plastic deformation to dissipate energy before the main body structure so as to reduce earthquake response and realize the earthquake-resistant design goal. According to different energy consumption mechanisms, the damper can be divided into a friction damper, a viscous damper, a metal damper and the like, wherein the metal damper is easy to replace, good in ductility, strong in energy consumption capability and low in price, and is widely applied to practical engineering.
The metal damper has the difference in energy consumption characteristics that the initial rigidity of the shearing damper is larger, the yield displacement is smaller, but under the condition of large shock, the shearing energy consumption plate is easy to bend out of plane, so that the bearing capacity and the energy consumption capacity of the shearing damper are reduced, and therefore, the energy consumption capacity of the shearing damper needs to be improved by adopting buckling prevention measures. The bending damper has stable energy consumption capability, but lower bearing capacity and rigidity, needs more manufacturing materials for achieving the anti-seismic fortification target, and is easy to cause waste and overlarge in damper quality and difficult to install.
The traditional metal damper has single energy consumption level and cannot meet the requirements of low-intensity earthquake and strong earthquake. For a metal damper with large yield displacement, under the action of low-strength earthquake, the metal damper can only maintain an elastic state due to the large yield displacement, and cannot exert the energy consumption function. In this case, the energy dissipation of the damper is very limited, and the seismic energy cannot be sufficiently absorbed and dispersed, so that the design requirements cannot be satisfied. In contrast, in the case of a metal damper with small yield displacement, under the action of intense earthquake, the load and plastic deformation to which it is subjected may increase, possibly resulting in excessive accumulation and even destruction of the plastic damage of the damper. This will result in a reduced energy consumption capacity of the damper, which will not meet the requirements for reliable operation over a long period of time.
Disclosure of utility model
Accordingly, the present utility model is directed to a multi-stage anti-buckling metal damper to solve the problem that the existing metal damper cannot meet the energy consumption requirements under different shock conditions.
The utility model provides an anti-buckling multi-stage energy consumption metal damper, which comprises an upper connecting plate, a lower connecting plate and shearing energy consumption plates arranged between the upper connecting plate and the lower connecting plate, wherein triangular energy consumption plates perpendicular to the shearing energy consumption plates are oppositely arranged on two sides of the shearing energy consumption plates, the bottom ends of the triangular energy consumption plates are connected with the lower connecting plate, a space is formed between the upper ends of the triangular energy consumption plates and the upper connecting plate, a plurality of top plate blocks are connected to the bottom surface of the upper connecting plate, and the top plate blocks are symmetrically distributed on two sides of the upper ends of the triangular energy consumption plates so as to contact the triangular energy consumption plates when the shearing energy consumption plates are stressed and bent to corresponding degrees, and stress the triangular energy consumption plates.
Further, constraint plates are symmetrically arranged on two sides of the shearing energy consumption plates in the deformation direction, the upper ends of the constraint plates are connected with the upper connecting plates, and the lower ends of the constraint plates are arranged at intervals with the lower connecting plates.
Further, a fixed plate is provided on a side of the constraint plate remote from the shear energy consuming plate to provide support to the constraint plate.
Further, the bottom of the fixing plate is arranged on the lower connecting plate, and a space is formed between the upper end of the fixing plate and the upper connecting plate.
Further, the triangular energy dissipation plate comprises a triangular main body and square blocks formed at the top of the triangular main body, wherein the square blocks are positioned between two adjacent top plate blocks, and a space is formed between the top ends of the square blocks and the upper connecting plate.
Further, the triangular energy dissipation plates are provided with a plurality of triangular energy dissipation plates.
Further, the shearing energy dissipation plate and the triangular energy dissipation plate are made of Q235B steel.
Further, the upper connecting plate, the lower connecting plate, the top plate block, the fixing plate and the constraint plate are made of Q355B steel.
The beneficial effects are that:
1. The invention adopts a shearing energy dissipation plate (shearing plate) and a triangular energy dissipation plate (bending plate) as core energy dissipation plates. The introduction of the shear energy consuming plates greatly improves the initial stiffness and yield force of the damper. Meanwhile, the triangular energy consumption plate has good plastic deformation capability and stable hysteresis performance, and the performance of the damper is further enhanced.
2. The invention adopts buckling-restrained measures for the shearing energy-consuming plate, and the fixing plate and the restraint plate can prevent the shearing energy-consuming plate from generating excessive out-of-plane buckling under the condition of medium shock or large shock to reduce the energy-consuming effect, and simultaneously avoid the influence of stress generated by welding on the shearing energy-consuming plate.
3. The invention is suitable for earthquake-proof design of multi-level earthquake. The earthquake protection system comprises a plurality of failure stages, provides a plurality of shock absorption and defense lines for a building structure, and can simultaneously meet the defense requirements of low-intensity earthquakes and strong earthquakes.
Drawings
FIG. 1 is a schematic view of an embodiment of an anti-buckling multistage energy dissipating metal damper mounted on a frame structure;
FIG. 2 is a schematic structural view of an anti-buckling multistage energy-consuming metal damper according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of an exploded structure of an anti-buckling multistage energy-dissipating metal damper according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a triangular energy dissipating frame of an anti-buckling multi-stage energy dissipating metal damper according to an embodiment of the present utility model;
Reference numerals are a frame 1, a metal damper 2, an upper connecting plate 21, a lower connecting plate 22, a shear energy dissipation plate 23, a triangular energy dissipation plate 24, a top plate block 25, a fixing plate 26 and a constraint plate 27.
Detailed Description
As shown in fig. 1 to 4, the present embodiment provides an anti-buckling multi-stage energy dissipation metal damper, which comprises an upper connecting plate 21, a lower connecting plate 22, and a shearing energy dissipation plate 23 disposed between the upper connecting plate 21 and the lower connecting plate 22, wherein triangular energy dissipation plates 24 perpendicular to the shearing energy dissipation plate 23 are disposed on two sides of the shearing energy dissipation plate 23, the bottom end of the triangular energy dissipation plate 24 is connected with the lower connecting plate 22, a space is formed between the upper end of the triangular energy dissipation plate 24 and the upper connecting plate 21, a plurality of top plate pieces 25 are connected to the bottom surface of the upper connecting plate 21, and the top plate pieces 25 are symmetrically distributed on two sides of the upper end of the triangular energy dissipation plate 24 so as to contact the triangular energy dissipation plate 24 when the shearing energy dissipation plate 23 is stressed and bent to a corresponding extent, and stress the triangular energy dissipation plate 24.
As shown in fig. 1 and 2, in this embodiment, the upper connecting plate 21 and the lower connecting plate 22 may be made of Q355B steel, and may be connected to the reinforced concrete mounting frames 1, and each mounting frame 1 may be provided with a plurality of the buckling restrained multi-stage energy-dissipation metal dampers 2, and a plurality of the buckling restrained multi-stage energy-dissipation metal dampers 2 may be arranged on the same straight line. The upper connection plate 21 and the lower connection plate 22 may be fixedly connected by welding or by means of a locking member. A plurality of top plate blocks 25 adapted to be matched with the triangular energy dissipation plates 24 are arranged on the bottom surface of the upper connecting plate 21. The upper end of the top plate block 25 is welded on the upper connecting plate 21, and the lower end is not in contact with the lower connecting plate 22, and is symmetrically arranged at both sides of the triangular energy dissipation plate 24.
The shear energy dissipation plate 23 can be made of Q235B steel, and is vertically arranged in the middle of the upper connecting plate 21 and the lower connecting plate 22 and used for absorbing seismic energy to realize a yield function. The shear energy dissipation plate 23 may be fixed between the upper and lower connection plates 21 and 22 by welding.
As shown in fig. 2 to 4, the triangular energy dissipation plates 24 are disposed on two sides of the shear energy dissipation plate 23, specifically on two sides of the narrow surface of the shear energy dissipation plate 23, and may also be made of Q235B steel. The triangular energy consuming plates 24 may be provided with 1, 2 or more, as desired. The triangular energy dissipation plate 24 comprises a triangular main body in the shape of an isosceles triangle and square blocks formed at the top of the triangular main body, wherein the square blocks are positioned between two adjacent top plate blocks 25, and a space is formed between the top end of each square block and the upper connecting plate 21. The bottom edge of the lower end of the triangular energy dissipation plate 24 can be welded on the lower connecting plate 22, the upper end of the triangular energy dissipation plate is arranged at intervals with the upper connecting plate 21, the triangular energy dissipation plate 24 is vertically arranged relative to the shearing energy dissipation plate 23, and the triangular energy dissipation plates are distributed on the left side and the right side of the shearing energy dissipation plate 23. According to the judgment of the performance level of the energy dissipation and shock absorption structure and the macroscopic judgment of the shock resistance performance target of the energy dissipation and shock absorption structure, the distance between the triangular energy dissipation plate 24 and the top plate block 25 is adjusted for different building types and performance targets. Taking a reinforced concrete frame 1 with a layer height of 3.3m as an example, taking performance 3 as a target, the deformation reference value of the energy dissipation and shock absorption structure is 1/600 under the condition of most earthquake, it is recommended that the distance between the triangular energy dissipation plate 24 and the top plate block 25 is 5-8mm, and the triangular energy dissipation plate 24 is ensured not to be contacted with the top plate block 25 under the condition of small earthquake or is only in an elastic deformation state. When a large shock is encountered or the shear energy dissipation plate 23 is greatly deformed, the top plate block 25 is contacted with the triangular energy dissipation plate 24, and the earthquake acting force is transmitted to enable the triangular energy dissipation plate to enter a plastic state from an elastic state, so that the earthquake energy is dissipated.
In an embodiment, the two sides of the shear energy dissipation plate 23 in the deformation direction are symmetrically provided with constraint plates 27, the upper ends of the constraint plates 27 are connected with the upper connecting plate 21, and the lower ends of the constraint plates are spaced from the lower connecting plate 22. Specifically, the upper end is welded to the upper connecting plate 21, and the lower end is not in contact with the lower connecting plate 22. The restraint plate 27 is provided with a fixing plate 26 on a side far away from the shear energy dissipation plate to provide support for the restraint plate 27, and the bottom of the fixing plate 26 is disposed on the lower connecting plate 22, and a space is formed between the upper end and the upper connecting plate 21. The fixing plate 26 and the restraint plate 27 can prevent the energy consumption effect from being reduced due to the fact that the shearing energy consumption plate generates excessive out-of-plane buckling under the condition of medium shock or large shock, and meanwhile the influence of stress generated by welding on the shearing energy consumption plate 23 is avoided. The distance between the restraint plate 27 and the fixing plate 26 relative to the shear energy dissipation plate 23 is adjustable, so that the bending amplitude of the shear energy dissipation plate 23 can be adjusted according to the requirement to quickly adapt to different earthquake-proof requirements.
In this embodiment, the top plate block 25, the fixing plate 26 and the constraint plate 27 may be made of Q355B steel.
In operation, when only small earthquake occurs, the shear energy dissipation plate 23 is used as a first stage energy dissipation plate and is vertically arranged between the upper and lower connection plates 22 to start absorbing earthquake energy, so as to realize yield function. At this point, the triangular energy consuming plates 24 are not in contact with the roof plate block 25, providing neither rigidity nor dissipating seismic energy. When a middle earthquake or a large earthquake occurs, the shearing energy dissipation plate 23 is bent out of plane and can be contacted with the restraint plates 27 at two sides, the fixed plates 26 provide support for the restraint plates 27, so that the shearing energy dissipation plate 23 is prevented from continuously generating out-of-plane deformation, the triangular energy dissipation plate 24 is contacted with the top plate block 25, the earthquake action is conducted to the triangular energy dissipation plate 24 through the top plate block 25, so that the earthquake energy is dissipated from an elastic state to a plastic state, and the whole damper completes the yielding energy dissipation process.
This embodiment greatly improves the initial stiffness and yield force of the damper by introducing a shear energy consuming plate 23. Meanwhile, the triangular energy dissipation plate 24 has good plastic deformation capability and stable hysteresis performance, and the performance of the damper is further enhanced. In addition, buckling-restrained measures are taken for the shearing energy dissipation plate 23, and the fixing plate 26 and the restraining plate 27 can prevent the shearing energy dissipation plate 23 from generating excessive out-of-plane buckling under the condition of medium shock or large shock to reduce the energy dissipation effect, and meanwhile, the influence of stress generated by welding on the shearing energy dissipation plate 23 is avoided. The scheme comprises a plurality of failure stages, provides a plurality of shock absorption defense lines for the building structure, and can simultaneously meet the fortification requirements of low-intensity earthquakes and strong earthquakes. In addition, this scheme simple structure easily makes, and the mounting means is convenient and change also very rapidly after the shake, has higher convenience. The invention is not only suitable for damping of new buildings, but also can be used for reinforcing and reforming the existing buildings. The adjusting can be carried out according to different anti-seismic fortification targets, the thickness of the energy consumption plate can be changed, and the gap distance between the triangular plate and the top plate block 25 can be adjusted within a certain range, so that more convenient shock absorption design is realized, and the adjusting can be optimized and carried out according to specific requirements so as to meet the requirements of different anti-seismic fortification targets.
It should be understood that the foregoing is only a preferred embodiment of the present utility model, and the scope of the present utility model is not limited to the foregoing examples, but all technical solutions falling under the concept of the present utility model fall within the scope of the present utility model.
The description of the drawings in the embodiments above illustrates only certain embodiments of the utility model and should not be taken as limiting the scope, since other related drawings may be made by those of ordinary skill in the art without the benefit of the inventive faculty.
Claims (7)
1. The buckling-preventing multistage energy-consuming metal damper is characterized by further comprising a shearing energy-consuming plate arranged between the upper connecting plate and the lower connecting plate, wherein triangular energy-consuming plates perpendicular to the shearing energy-consuming plate are oppositely arranged on two sides of the shearing energy-consuming plate, the bottom end of each triangular energy-consuming plate is connected with the lower connecting plate, a space is formed between the upper end of each triangular energy-consuming plate and the upper connecting plate, a plurality of top plate blocks are connected to the bottom surface of the upper connecting plate, the top plate blocks are symmetrically distributed on two sides of the upper end of each triangular energy-consuming plate so as to be in contact with the triangular energy-consuming plate when the shearing energy-consuming plates are stressed and bent to a corresponding degree, constraint plates are symmetrically arranged on two sides of the shearing energy-consuming plates in the deformation direction of the shearing energy-consuming plates, the upper ends of the constraint plates are connected with the upper connecting plate, and the lower ends of the constraint plates are spaced from the lower connecting plate.
2. The buckling restrained multistage energy dissipating metal damper of claim 1, wherein a side of the constraining plate remote from the shear energy dissipating plate is provided with a fixed plate to provide support to the constraining plate.
3. The buckling restrained multistage energy-dissipating metal damper of claim 2, wherein the bottom of the fixing plate is disposed on the lower connecting plate, and a space is formed between the upper end and the upper connecting plate.
4. The buckling restrained multi-stage energy dissipating metal damper according to claim 1, wherein the triangular energy dissipating plate comprises a triangular body and square blocks formed on the top of the triangular body, the square blocks being located between two adjacent top plate blocks with a space formed between the top ends thereof and the upper connecting plate.
5. The buckling restrained multistage energy dissipating metal damper of claim 1, wherein the triangular energy dissipating plates are provided in several.
6. The buckling restrained multistage energy dissipating metal damper of claim 1, wherein the shear energy dissipating plates and triangular energy dissipating plates are made of Q235B steel.
7. The buckling restrained multistage energy dissipating metal damper of claim 2, wherein the upper connecting plate, lower connecting plate, roof block, fixing plate and restraining plate are made of Q355B steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420187929.9U CN222120599U (en) | 2024-01-25 | 2024-01-25 | Buckling-restrained multistage energy-consumption metal damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420187929.9U CN222120599U (en) | 2024-01-25 | 2024-01-25 | Buckling-restrained multistage energy-consumption metal damper |
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| CN222120599U true CN222120599U (en) | 2024-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202420187929.9U Active CN222120599U (en) | 2024-01-25 | 2024-01-25 | Buckling-restrained multistage energy-consumption metal damper |
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| Country | Link |
|---|---|
| CN (1) | CN222120599U (en) |
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- 2024-01-25 CN CN202420187929.9U patent/CN222120599U/en active Active
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