CN116044036A - Graded yield energy consumption damper - Google Patents
Graded yield energy consumption damper Download PDFInfo
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- CN116044036A CN116044036A CN202211700382.XA CN202211700382A CN116044036A CN 116044036 A CN116044036 A CN 116044036A CN 202211700382 A CN202211700382 A CN 202211700382A CN 116044036 A CN116044036 A CN 116044036A
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- energy dissipation
- plate
- energy
- base plate
- yielding
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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
Abstract
The invention discloses a graded yield energy consumption damper which comprises a first substrate, a second substrate, a stop block, a second yield energy consumption piece and a first yield energy consumption piece, wherein the first substrate and the second substrate are arranged in parallel at intervals; the stop block is fixed on the second substrate and is provided with a plurality of saw-tooth-shaped positioning grooves; the second yield energy dissipation piece comprises a plurality of second energy dissipation metal plates, the number of which is the same as that of the positioning grooves, one end of each second energy dissipation metal plate is fixed with the first substrate, the other end of each second energy dissipation metal plate is inserted into the positioning groove, a movable gap is formed between the end head and the positioning groove, and the section size of the fixed end of each second energy dissipation metal plate and the section size of the fixed end of each first substrate are larger than the section size of the other end of each second energy dissipation metal plate; the first energy dissipation part comprises a plurality of first energy dissipation metal plates which are divided into two groups and symmetrically arranged on two sides of the second energy dissipation part, two ends of the first energy dissipation metal plates are respectively fixed with the first base plate and the second base plate, and the section sizes of two ends of the first energy dissipation metal plates are larger than the section sizes of the middle parts of the first energy dissipation metal plates.
Description
Technical Field
The invention relates to the technical field of disaster prevention and shock absorption, in particular to a graded yield energy consumption damper.
Background
The traditional metal damper has only one yield point, has limitation in practical engineering application, and cannot meet the requirements of large earthquake and small earthquake at the same time, for example, the initial rigidity of the metal damper is larger, the energy consumption and vibration reduction effects of the metal damper can be greatly reflected only under the large earthquake effect, and the energy consumption and vibration reduction effects of the metal damper are not obvious under the frequent small earthquake effect. In order to make metal dampers more effective in protecting structures in multi-level earthquakes, new dampers with multiple yield points have been developed in recent years.
However, in existing graded yield metal dampers, the physical multiple yield point effect is not obvious. The energy dissipation capacity and fatigue resistance are to be improved.
In summary, how to provide a graded yielding damper capable of yielding energy in stages and having excellent performance under small, medium and large shocks is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a graded yielding energy-consuming damper, which has two clear yield points by utilizing a preset gap, can realize graded yielding energy consumption under the earthquake with different intensities, and can meet the requirements of small earthquake energy consumption and shock absorption and medium earthquake and large earthquake energy consumption and shock absorption.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a graded yield energy consuming damper comprising: the device comprises a first base plate, a second base plate, a stop block, a second yielding energy consumption piece and a first yielding energy consumption piece, wherein the first base plate and the second base plate are arranged in parallel at intervals;
the stop block is fixed on the second substrate and is provided with a plurality of saw-tooth-shaped positioning grooves;
the second yield energy dissipation piece comprises a plurality of second energy dissipation metal plates, the number of the second energy dissipation metal plates is the same as that of the positioning grooves, one end of each second energy dissipation metal plate is fixed with the first substrate, the other end of each second energy dissipation metal plate is inserted into the positioning groove, the end head and the positioning groove form a movable gap, and the section size of the fixed end of each second energy dissipation metal plate and the section size of the fixed end of each first substrate are larger than the section size of the other end of each second energy dissipation metal plate;
the first energy dissipation part comprises a plurality of first energy dissipation metal plates, the first energy dissipation metal plates are divided into two groups and are symmetrically arranged on two sides of the second energy dissipation part, two ends of each first energy dissipation metal plate are respectively fixed with the first substrate and the second substrate, and the section sizes of two ends of each first energy dissipation metal plate are larger than the section sizes of the middle parts of the first energy dissipation metal plates.
Preferably, in the above-mentioned graded yielding energy-consuming damper, the second energy-consuming metal plate includes a bottom plate having a trapezoidal plate shape and a top plate having a rectangular plate shape, the top plate is integrally formed at a top edge of the bottom plate having a trapezoidal shape, a cross section of a bottom rectangular edge of the top plate is identical to a cross section of the top edge of the bottom plate having a trapezoidal shape, the bottom edge of the bottom plate is fixed to the first base plate, and one end of the top plate away from the bottom plate is inserted into the positioning groove.
Preferably, in the above-mentioned graded yield energy-consuming damper, a thickness of an end of the top plate away from the bottom plate tapers to zero.
Preferably, in the above-mentioned graded yield energy-dissipation damper, the positioning groove is a linear notch structure.
Preferably, in the above-mentioned graded yielding energy dissipation damper, the two ends of the first energy dissipation metal plate and the first substrate and the second substrate are fixed by welding, fastening piece locking connection, or interference fit grafting.
Preferably, in the above-mentioned graded yield damper, the first energy-dissipating metal plate and the second energy-dissipating metal plate are energy-dissipating steel plates.
Preferably, in the above-mentioned graded yield energy dissipation damper, a plurality of bolt connection holes are formed in the first base plate and the second base plate.
Compared with the prior art, the invention discloses a graded yield energy consumption damper which has the following beneficial effects:
1. the graded yielding energy consumption damper can be conveniently and quickly integrally applied to energy dissipation and shock absorption buildings as a prefabricated whole, for example, the graded yielding energy consumption damper is installed in a frame supporting structure of the shock absorption building or in a concrete embedded part.
2. According to the invention, the first energy-consuming metal plates are symmetrically arranged at two sides of the second yield energy-consuming piece, so that the overall stability is improved.
3. The thickness of one end, close to the second base plate, of the top plate of all the second energy-consumption metal plates is gradually reduced to zero within a certain range, so that friction and collision between the top plate and the inner wall of the positioning groove during yielding are avoided.
4. According to the invention, the cross section size of the two ends of the first energy-consuming metal plate is larger than that of the middle, and the cross section size of the bottom end of the second energy-consuming metal plate is larger than that of the top end, so that each section of the component can reach yield when in operation, and the energy-consuming capacity and fatigue resistance of the structure are improved.
5. Based on different connection relations of the first yielding energy consumption piece and the second yielding energy consumption piece, the first yielding energy consumption piece and the second yielding energy consumption piece respectively generate yielding deformation when the first base plate and the second base plate of the graded yielding damper generate different relative positions, namely, only the first yielding energy consumption piece enters a yielding deformation stage in small earthquake, and both the first yielding energy consumption piece and the second yielding energy consumption piece enter a yielding deformation stage in medium and large earthquake, so that grading yielding according to a vibration source grade is realized, an obvious grading yielding effect is achieved, and the purpose of multistage energy dissipation and vibration reduction is fulfilled.
6. The invention utilizes the preset gap between the second energy-consumption metal plate and the stop block, so that the invention has two clear yield points in working, and can realize graded yield energy dissipation under different earthquakes, which is to selectively realize yield energy consumption under different earthquakes by adjusting the size parameters of the energy-consumption metal plate and the gap distance between the energy-consumption metal plate and the stop block.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a staged yield dissipative damper provided by the invention;
FIG. 2 is a schematic structural view of a first energy-dissipating metal plate according to the present invention;
fig. 3 is a schematic structural diagram of a second energy-dissipating metal plate according to the present invention.
Wherein:
1-a first substrate; 2-a second substrate; 3-a first yield energy consuming member; 31-a first energy-consuming metal plate; 4-a second yield energy consuming member; 41-a second energy-consuming metal plate; 411-floor; 412-top plate; 5-a stop block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 3, an embodiment of the present invention discloses a graded yield energy-consuming damper, comprising: a first base plate 1 and a second base plate 2 arranged in parallel at intervals, and a stopper 5, a second energy-yielding piece 4 and a first energy-yielding piece 3 connected between the first base plate 1 and the second base plate 2;
the stop block 5 is fixed on the second substrate 2 and is provided with a plurality of saw-tooth-shaped positioning grooves;
the second yielding energy dissipation piece 4 comprises a plurality of second energy dissipation metal plates 41 with the same quantity as the positioning grooves, one end of each second energy dissipation metal plate 41 is fixed with the first substrate 1, the other end of each second energy dissipation metal plate 41 is inserted into each positioning groove, a movable gap is formed between the end head and each positioning groove, and the section size of the fixed end of each second energy dissipation metal plate 41 and the section size of the fixed end of each first substrate 1 are larger than the section size of the other end;
the first yielding energy dissipation members 3 comprise a plurality of first energy dissipation metal plates 31, the plurality of first energy dissipation metal plates 31 are divided into two groups and symmetrically arranged on two sides of the second yielding energy dissipation member 4, two ends of the first energy dissipation metal plates 31 are respectively fixed with the first base plate 1 and the second base plate 2, and the cross-sectional dimensions of two ends of the first energy dissipation metal plates 31 are larger than those of the middle parts of the first energy dissipation metal plates.
In this embodiment: the first base plate 1 and the second base plate 2 are used for being connected in construction facilities or sites to be damped and shock-resistant, for example, the first base plate 1 and the second base plate 2 are fixed between support columns or embedded parts in the sites to be damped through fasteners such as bolts, and accordingly, a plurality of connecting holes for the bolts to penetrate can be formed in the first base plate 1 and the second base plate 2.
The two ends of the first yielding energy dissipation element 3 are fixedly connected with the first base plate 1 and the second base plate 2 respectively, and are equivalent to fixed beams between the first base plate 1 and the second base plate 2. According to the material of the first yielding energy dissipation piece 3, the two ends of the first yielding energy dissipation piece 3 can be fixedly connected through welding, fastening piece locking, interference fit and the like.
One end of the second energy-dissipating metal plates 41 is fixedly connected to the first substrate 1, the other end is adjacent to the second substrate 2 and suspended in the air, and the thickness of one end close to the second substrate 2 is gradually reduced to zero within a certain range, so that the second energy-dissipating metal plates are completely changed into a stress state of a cantilever beam. According to the bending moment diagram of the cantilever beam, the bottom plate 411 is arranged into a trapezoid plate shape, and the top plate 412 is arranged into a rectangular plate shape, so that each section can reach yield during working, and the deformability, the energy consumption capability and the fatigue resistance of the structure are improved.
The lower part of the stopper 5 is cut into a tooth slot shape to form a plurality of positioning grooves for restricting the swing range of the top plate 412. It is apparent that the inner wall spacing of any one of the detents is greater than the radial dimension of the top plate 412 to provide ample swing space for the top plate 412.
When the second yieldable energy consuming member 4 is subjected to external vibrations through the first and second base plates 1, 2, the top plate 412 swings between the positioning grooves. With the strengthening of the external vibration, the swing amplitude of the top plate 412 increases until the positioning groove is contacted with the side wall of the positioning groove, and the positioning groove applies stress to the second yielding energy consumption member 4 in combination with the first base plate 1, so that the second yielding energy consumption member 4 is bent and deformed.
The materials of the first yielding energy dissipation element 3 and the second yielding energy dissipation element 4 include, but are not limited to, metal materials, and specifically should be set according to the use occasion and the use condition of the graded yielding energy dissipation damper.
When the graded yielding damper is installed on a place to be damped, if small vibration occurs in the place to be damped, external vibration acts on the first yielding energy dissipation piece 3 and the second yielding energy dissipation piece 4 through the first base plate 1 and the second base plate 2.
Based on the different connection relations of the first yielding energy dissipation piece 3 and the second yielding energy dissipation piece 4, when small shock occurs outside and the stress externally applied to the first yielding energy dissipation piece 3 exceeds the elastic limit of the first yielding energy dissipation piece 3, the first yielding energy dissipation piece 3 yields and deforms, so that the energy of an external seismic source is consumed. At this time, the stress transmitted from the outside to the second yielding energy dissipation element 4 is insufficient to make the second yielding energy dissipation element 4 in the yielding deformation stage, so the second yielding energy dissipation element 4 is in the elastic stage during the small shock, and the top plate 412 of the second yielding energy dissipation element 4 swings between the gaps of the positioning grooves. When the external earthquake and the major earthquake occur, the stress transmitted to the second yielding energy dissipation piece 4 by the external environment is larger than the elastic limit of the second yielding energy dissipation piece 4, and at the moment, besides the bending deformation of the first yielding energy dissipation piece 3, the second yielding energy dissipation piece 4 also enters a yielding deformation stage to consume the energy of the external earthquake source through the bending deformation. It can be seen that in this embodiment, the first yielding energy dissipation member 3 and the second yielding energy dissipation member 4 achieve graded yielding energy dissipation based on the different connection relationship between the first base plate 1 and the second base plate 2, and have obvious graded yielding energy dissipation effects.
It should be noted that the above definition of small, medium and large shocks can be referred to the conventional definition in the art.
In summary, the invention combines two kinds of yielding energy consumption pieces with different connection relations into the graded yielding damper, based on the different connection relations of the first yielding energy consumption piece 3 and the second yielding energy consumption piece 4, the first base plate 1 and the second base plate 2 generate different relative displacements under different grades of seismic sources to respectively generate yielding deformation, so that the graded yielding damper has good grading yielding capacity according to different grades of seismic sources, can meet the aim of multistage energy dissipation and shock absorption, and can be widely applied to the field of various anti-seismic building structures.
The staged yield damper provided by the invention will be further described with reference to the drawings and embodiments.
Based on the above embodiment, considering that the second yielding energy dissipation element 4 is installed between the first base plate 1 and the second base plate 2 in a cantilever beam structure, based on this arrangement, when the positioning groove in the stopper 5 applies stress to the second yielding energy dissipation element 4, the bending moment suffered by the second yielding energy dissipation element 4 gradually increases from the top plate 412 to the bottom plate 411 of the second yielding energy dissipation element 4, so the cross-sectional dimension of the bottom plate 411 of the second yielding energy dissipation element 4 is larger than the cross-sectional dimension of the top plate 412, ensuring that each cross section of the member yields simultaneously when stressed, being beneficial to improving the deformability and yielding energy dissipation effect of the second yielding energy dissipation element 4 and enhancing the fatigue resistance of the structure.
The second yielding energy consumer 4 employed for the present invention may comprise a plurality of second energy consuming metal plates 41. All the second energy-consuming metal plates 41 can be arranged between the first substrate 1 and the second substrate 2 side by side, and two adjacent second energy-consuming metal plates 41 are spaced in parallel and mainly bear the energy-consuming effect under the action of large earthquake. The specific number of second dissipative metal plates 41 can be analyzed and set according to the specific requirements of different engineering operations on the load capacity, the dissipative situation, etc. of the graded yield damper.
The cross-sectional dimension of the bottom plate 411 of any one of the second dissipative metal plates 41 is larger than the cross-sectional dimension of the top plate 412. The thickness of the end, close to the second base plate 2, of the top plate 412 is gradually reduced to zero within a certain range, so that collision and friction between the second energy-consuming metal plate 41 and the positioning groove during yielding deformation are avoided, and the yielding energy-consuming effect of the second energy-consuming metal plate 41 is improved.
In order to achieve a better technical effect, all the second energy-consuming metal plates 41 are inserted in a dispersed manner and suspended in the independent positioning grooves, and any one of the second energy-consuming metal plates 41 is not contacted with the positioning groove; compared with the design that the top plates 412 of the second energy-consuming metal plates 41 are connected by connecting blocks, the design avoids the fracture of the lower edge of the triangular energy-consuming steel plate connected with the rectangular connecting blocks at the top of the triangular energy-consuming steel plate during yield energy consumption, and the design completely becomes the stress state of the cantilever beam, thereby improving the deformability, the energy-consuming capacity and the fatigue resistance.
The first yielding energy consuming member 3 employed for the present invention may comprise a plurality of first energy consuming metal plates 31. The first dissipative metal plate 31 may be vertically connected between the first substrate 1 and the second substrate 2 to consume energy transferred from the first substrate 1 and the second substrate 2 during a small shock by bending deformation.
The number of the first energy dissipation metal plates 31 can be multiple, and all the first energy dissipation metal plates 31 are distributed in parallel at intervals and symmetrically arranged on two sides of the second yield energy dissipation piece 4, so that overall stability is improved.
The specific number of the first energy consuming metal plates 31 may be calculated according to the specific situation of the bearing capacity, the energy consumption situation, etc. assumed by the first yield energy consuming member 3 in the engineering example.
The first energy consuming metal plate 31 may be provided as an X-shaped steel plate, for example. Referring to fig. 2, fig. 2 is a schematic structural diagram of a first energy-dissipating metal plate 31 according to an embodiment of the present invention. The thickness of any one of the first dissipative metal plates 31 is uniform up and down, and the cross-sectional dimensions of both ends are larger than those of the middle part. This structure is adapted to the stress distribution situation of the first energy-consuming metal plate 31, and is advantageous for improving the yield energy-consuming effect of the first energy-consuming metal plate 31.
In the embodiments provided by the invention, the stop block 5 is fixedly arranged on the inner surface of the second substrate 2, and the stop block 5 is cut into tooth grooves to form a plurality of linear channels; all the second energy consuming metal plates 41 are inserted and suspended in separate positioning grooves in a dispersed manner, and any one of the second energy consuming metal plates 41 is not in contact with the positioning groove. When the top plate 412 of the second energy-dissipating metal plate 41 is still or the swing amplitude does not exceed the constraint range of the positioning groove, the second energy-dissipating metal plate 41 does not elastically yield due to the relative displacement of the first base plate 1 and the second base plate 2, and only the first yielding energy dissipation member 3 participates in energy dissipation and vibration reduction. As the seismic source level increases, when the swing amplitude of the top plate 412 of the second energy-dissipating metal plate 41 increases beyond the constraint range of the positioning groove, the second energy-dissipating member 4 is deformed and yields in addition to the first energy-dissipating member 3, and participates in energy dissipation and shock absorption.
Wherein the positioning groove is preferentially set as a linear channel, and the inner wall of the linear channel is used for restraining the swinging range of the second end of the second energy-consuming metal plate 41.
The graded yield damper provided by the invention is mainly applied to energy dissipation and shock absorption buildings, and the specific number of the first energy dissipation metal plates 31 and the second energy dissipation metal plates 41 can be determined according to the bearing capacity and shock absorption requirements of the energy dissipation and shock absorption buildings on the graded yield damper. The graded yielding energy dissipation damper can be conveniently and quickly integrally applied to engineering examples as a prefabricated whole, for example, the graded yielding energy dissipation damper is installed in a frame supporting structure of a shock absorption building or a concrete embedded part. In the small earthquake, the plurality of second energy-consuming metal plates 41 sway in the positioning groove in an elastic state, so that only the plurality of first energy-consuming metal plates 31 consume the earthquake energy; when the middle earthquake, the large earthquake and the rare earthquake occur, the swing amplitude of the plurality of second energy dissipation plates 41 reaches the limit of the gap of the positioning groove, and the second energy dissipation plates are blocked by the inner wall of the positioning groove and simultaneously bend and deform, so that the earthquake energy is consumed together with the first energy dissipation metal plates 31, and the effect of obviously yielding in stages is achieved.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A graded yield energy consuming damper comprising: a first base plate (1) and a second base plate (2) which are arranged in parallel at intervals, and a stop block (5), a second yielding energy consumption piece (4) and a first yielding energy consumption piece (3) which are connected between the first base plate (1) and the second base plate (2);
the stop block (5) is fixed on the second substrate (2) and is provided with a plurality of saw-tooth-shaped positioning grooves;
the second yield energy dissipation piece (4) comprises a plurality of second energy dissipation metal plates (41) with the same quantity as the positioning grooves, one end of each second energy dissipation metal plate (41) is fixed with the first base plate (1), the other end of each second energy dissipation metal plate is inserted into the corresponding positioning groove, the end head and the positioning groove form a clearance, and the section size of the fixed end of each second energy dissipation metal plate (41) and the section size of the fixed end of the corresponding first base plate (1) are larger than the section size of the other end;
the first energy dissipation part (3) comprises a plurality of first energy dissipation metal plates (31), the first energy dissipation metal plates (31) are divided into two groups and are symmetrically arranged on two sides of the second energy dissipation part (4), two ends of the first energy dissipation metal plates (31) are respectively fixed with the first base plate (1) and the second base plate (2), and the section sizes of two ends of the first energy dissipation metal plates (31) are larger than the section sizes of the middle parts of the first energy dissipation metal plates.
2. A graded yielding dissipative damper according to claim 1, wherein the second dissipative metal plate (41) comprises a bottom plate (411) in the shape of a trapezoid and a top plate (412) in the shape of a rectangular plate, the top plate (412) is integrally formed at the top side of the trapezoid of the bottom plate (411), the bottom side of the trapezoid of the top plate (412) has the same cross section as the top side of the trapezoid of the bottom plate (411), the bottom side of the trapezoid of the bottom plate (411) is fixed with the first base plate (1), and one end of the top plate (412) far from the bottom plate (411) is inserted into the positioning groove.
3. A graded yield energy consuming damper according to claim 2, wherein the thickness of the end of the top plate (412) remote from the bottom plate (411) tapers to zero.
4. The graded yield energy consuming damper of claim 1, wherein the detent is a linear notch configuration.
5. A graded yielding dissipative damper according to claim 1, wherein the two ends of the first dissipative metal plate (31) are fixed to the first base plate (1) and the second base plate (2) by welding, fastening, locking connection, or interference fit insertion.
6. A graded yielding dissipative damper according to claim 1, wherein the first dissipative metal plate (31) and the second dissipative metal plate (41) are dissipative steel plates.
7. A graded yielding dissipative damper according to claim 1, wherein the first base plate (1) and the second base plate (2) are provided with a plurality of bolting holes.
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| CN117166643A (en) * | 2023-11-02 | 2023-12-05 | 华侨大学 | Multi-stage energy-consumption metal damper and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117166643A (en) * | 2023-11-02 | 2023-12-05 | 华侨大学 | Multi-stage energy-consumption metal damper and use method thereof |
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