CN112575919A - Maintainable buckling-restrained energy-dissipation supporting device - Google Patents
Maintainable buckling-restrained energy-dissipation supporting device Download PDFInfo
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- CN112575919A CN112575919A CN202011468275.XA CN202011468275A CN112575919A CN 112575919 A CN112575919 A CN 112575919A CN 202011468275 A CN202011468275 A CN 202011468275A CN 112575919 A CN112575919 A CN 112575919A
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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
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
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Abstract
The invention relates to the technical field of civil engineering structures, in particular to a maintainable buckling-restrained brace device which comprises an external restraint system and a core energy-dissipation steel plate, wherein the external restraint system is provided with a cavity structure for preventing the core energy-dissipation steel plate from buckling and installing the core energy-dissipation steel plate. According to the buckling-restrained energy-dissipation supporting device, the cavity structure which prevents the buckling of the core energy-dissipation steel plate and is provided with the core energy-dissipation steel plate is formed through the external restraint system, so that the buckling of the core energy-dissipation steel plate can be prevented in an all-round manner, and the complete buckling-restrained energy-dissipation supporting device is formed. Meanwhile, the maintainable buckling-restrained energy-dissipation brace provided by the invention is simple in structural form and stable in stress performance, and the core energy-dissipation steel plate can be conveniently disassembled and replaced after being subjected to stress yield failure, so that the maintenance of the buckling-restrained brace is realized, and the maintainable buckling-restrained energy-dissipation brace has good popularization.
Description
Technical Field
The invention relates to the technical field of civil engineering structures, in particular to a maintainable buckling-restrained energy-dissipation supporting device.
Background
Natural disasters such as earthquakes have the characteristics of unpredictability, strong destructive power and the like, China is a country with multiple earthquakes, and huge economic loss and casualties are caused by the earthquakes every year. The ability of building and structures to resist natural disasters such as earthquake and strong wind is one of important research directions of civil engineering disciplines, and energy dissipation damping elements are adopted to dissipate energy of external input structures and are increasingly widely applied to the aspects of structural disaster prevention and reduction and the like. Buckling restrained braces are energy-dissipating and shock-absorbing elements which are widely applied to structures such as buildings and bridges. Under the action of medium and small earthquakes, the buckling-restrained brace can provide additional rigidity for the structure and reduce the deformation of the structure; under the condition of a large earthquake, the energy dissipation elements in the buckling-restrained brace work to dissipate the energy of the earthquake input structure, so that the good hysteretic energy dissipation performance is shown, and the earthquake-resistant requirement of the building structure is met.
The buckling restrained brace that adopts in fields such as building and bridge at present, structural dimension is big, the cost is high, and buckling restrained brace basically destroys after the structure suffers great earthquake, needs to be changed, brings the loss of a large amount of manpower, material resources and financial resources, and complicated maintenance process and longer maintenance cycle seriously influence the reuse of building structure. Therefore, the novel buckling restrained brace is designed, the buckling restrained brace can be repaired after an earthquake, the maintenance period is shortened, and the economic loss is reduced, so that the problem becomes increasingly prominent. In order to solve the problems, the invention provides a maintainable buckling-restrained energy-dissipation brace.
Disclosure of Invention
The invention provides a maintainable buckling-restrained energy-dissipation supporting device to overcome the problems.
In the technical scheme, the maintainable buckling-restrained brace device comprises an external restraint system and a core energy-consumption steel plate, wherein the external restraint system is provided with a cavity structure which prevents the core energy-consumption steel plate from buckling and is provided with the core energy-consumption steel plate.
According to the buckling-restrained energy-dissipation supporting device, the cavity structure which prevents the buckling of the core energy-dissipation steel plate and is provided with the core energy-dissipation steel plate is formed through the external restraint system, so that the buckling of the core energy-dissipation steel plate can be prevented in an all-round manner, and the complete buckling-restrained energy-dissipation supporting device is formed. Meanwhile, the maintainable buckling-restrained energy-dissipation brace provided by the invention is simple in structural form and stable in stress performance, and the core energy-dissipation steel plate can be conveniently disassembled and replaced after being subjected to stress yield failure, so that the maintenance of the buckling-restrained brace is realized, and the maintainable buckling-restrained energy-dissipation brace has good popularization.
Preferably, the external restraint system comprises two lateral restraint plates, a plurality of filling plates and two end connection plates, the two lateral restraint plates are arranged on the upper side and the lower side of the core energy consumption steel plate, the plurality of filling plates are arranged between the two lateral restraint plates and located on the two opposite sides of the core energy consumption steel plate, and the two end connection plates are arranged between the two lateral restraint plates and located on the other two opposite sides of the core energy consumption steel plate. The core energy consumption steel plate is reliably fixed, so that the core energy consumption steel plate is fixed from all directions up, down, left, right, front and back, and is prevented from buckling. Specifically, the method comprises the following steps: the lateral restraint plates are arranged on the upper side and the lower side of the core energy consumption steel plate and are used for preventing the core energy consumption steel plate from out-of-plane buckling; in addition, the left side and the right side of the core energy consumption steel plate are provided with filling plates which mainly play a role in limiting the lateral buckling of the maintainable energy consumption steel plate and limiting. The two end connecting plates are arranged between the two lateral restraining plates and are positioned on the other two opposite sides of the core energy consumption steel plate, and the two end connecting plates are mainly used for transferring load. It should be understood that the number of the two lateral restraining plates and the two connecting plates is preferably, but not restrictively, set, and that other numbers of the two lateral restraining plates and the two connecting plates are possible as long as the corresponding functions can be performed.
Preferably, the cavity structure is formed by two lateral restraining plates, a plurality of filling plates and two end connecting plates. The arrangement is that the core energy consumption steel plate is fixed in an all-round mode, buckling of the core energy consumption steel plate in all directions from top to bottom, left to right, front to back is prevented, a protection cover is formed, and buckling prevention effects are greatly improved.
Preferably, the external restraint system is further provided with a connecting plate, and the end connecting plate and the core energy consumption steel plate are fixedly connected through the connecting plate. The connecting plates are arranged to transmit external loads to the core energy consumption steel plates and connect the core energy consumption steel plates and the end connecting plates into a whole. Preferably, the connection plate is arranged at a connection part of the core energy consumption steel plate and the end connection plate.
Preferably, both sides of the lateral restraining plate are provided with notches, and the connecting plate is installed at the positions of the notches. This is provided to facilitate the mounting of the connection plate and to transfer forces.
Preferably, the connecting plate is arranged at a connecting part of the end connecting plate and the core energy consumption steel plate, and the end connecting plate is fixedly connected with the core energy consumption steel plate through a first fixing structure. The arrangement is that the core energy dissipation steel plate and the end connecting plate are reliably connected into a whole through the first fixing structure.
Preferably, the two lateral restraint plates and the plurality of filling plates are fixedly connected through a second fixing structure. The arrangement can reliably and fixedly connect the plurality of filling plates with the two lateral restraining plates.
Preferably, a gap is formed between the end connecting plate and the core energy consumption steel plate, the core energy consumption steel plate and the lateral restraint plates on the upper side and the lower side are also provided with gaps, and the gaps are formed between the core energy consumption steel plate and the plurality of filling plates and are not adhered. The gap is set for keeping the buffer space or facilitating the mutual installation and matching.
Preferably, the corners of the lateral restraint plates corresponding to the end connecting plates are provided with reserved holes. The reserved hole is arranged to facilitate maintenance work by inserting a steel bar into the reserved hole when the buckling restrained brace is maintained after an earthquake.
Preferably, the core energy consumption steel plate is made of low-yield-point steel.
Compared with the prior art, the beneficial effects are:
according to the buckling-restrained energy-dissipation supporting device, the cavity structure which prevents the buckling of the core energy-dissipation steel plate and is provided with the core energy-dissipation steel plate is formed through the external restraint system, so that the buckling of the core energy-dissipation steel plate can be prevented in an all-round manner, and the complete buckling-restrained energy-dissipation supporting device is formed. The buckling-restrained energy-dissipation brace is simple in structural form, and consists of an external restraint system and a core energy-dissipation steel plate, and the core energy-dissipation steel plate is arranged in the external restraint system to form a complete buckling-restrained energy-dissipation brace system. Meanwhile, the maintainable buckling-restrained energy-dissipation brace provided by the invention is simple in structural form and stable in stress performance, and the core energy-dissipation steel plate can be conveniently disassembled and replaced after being subjected to stress yield failure, so that the maintenance of the buckling-restrained brace is realized, and the maintainable buckling-restrained energy-dissipation brace has good popularization. Compared with the traditional buckling restrained brace, the maintainable buckling restrained brace has good stress and energy consumption performance and is set to be in a maintainable structural form, and after an earthquake, the damaged core energy consumption steel plate is replaced to realize the quick repair of the buckling restrained brace, so that the economic loss is reduced.
Drawings
Fig. 1 is a schematic view of the overall structural arrangement of a maintainable buckling-restrained brace apparatus.
Fig. 2 is a schematic plan view of a repairable buckling restrained energy dissipation brace apparatus with a lateral restraining plate.
Fig. 3 is a schematic plan view of a repairable buckling restrained brace apparatus without an upper side lateral restraining plate.
Fig. 4 is a schematic plan view of a core energy dissipation steel plate in a maintainable buckling restrained energy dissipation bracing apparatus.
Fig. 5 is a schematic sectional view taken along line a-a in fig. 3.
Fig. 6 is a schematic view of a connection structure of a core energy consumption steel plate and an end connection plate in a maintainable buckling-restrained energy consumption supporting device.
Description of the drawings: 1-external restraint system, 12-core energy consumption steel plate, 11-cavity structure, 12-lateral restraint plate, 13-filling plate, 15-connecting plate, 14-end connecting plate, 2-core energy consumption steel plate, 3-bolt and 121-notch.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
examples
Referring to fig. 1 to 6, an embodiment of a repairable buckling restrained brace apparatus according to the present invention includes an external restraint system 1 and a core energy dissipation steel plate 2, wherein the external restraint system 1 is formed with a cavity structure 11 for preventing the core energy dissipation steel plate 2 from buckling and mounting the core energy dissipation steel plate 2.
The external restraint system 1 comprises two lateral restraint plates 12, a plurality of filling plates 13 and two end connection plates 14, the two lateral restraint plates 12 are arranged on the upper side and the lower side of the core energy consumption steel plate 2, the plurality of filling plates 13 are arranged between the two lateral restraint plates 12 and located on the two opposite sides of the core energy consumption steel plate 2, and the two end connection plates 14 are arranged between the two lateral restraint plates 12 and located on the other opposite sides of the core energy consumption steel plate 2. The core energy consumption steel plate is reliably fixed, so that the core energy consumption steel plate is fixed from all directions up, down, left, right, front and back, and is prevented from buckling. Specifically, the method comprises the following steps: the lateral restraint plates are arranged on the upper side and the lower side of the core energy consumption steel plate and are used for preventing the core energy consumption steel plate from out-of-plane buckling; in addition, the left side and the right side of the core energy consumption steel plate are provided with filling plates which mainly play a role in limiting the lateral buckling of the maintainable energy consumption steel plate and limiting. The two end connecting plates are arranged between the two lateral restraining plates and are positioned on the other two opposite sides of the core energy consumption steel plate, and the two end connecting plates are mainly used for transferring load. It should be understood that the number of the two lateral restraining plates and the two connecting plates is preferably, but not restrictively, set, and that other numbers of the two lateral restraining plates and the two connecting plates are possible as long as the corresponding functions can be performed.
In addition, the cavity structure 11 is formed by two lateral constraining plates 12, several filling plates 13 and two end connecting plates 14. The arrangement is that the core energy consumption steel plate is fixed in an all-round mode, buckling of the core energy consumption steel plate in all directions from top to bottom, left to right, front to back is prevented, a protection cover is formed, and buckling prevention effects are greatly improved.
Wherein, the external restraint system 1 is further provided with a connecting plate 15, and the end connecting plate 14 and the core energy consumption steel plate 2 are fixedly connected through the connecting plate 15. The connecting plates are arranged to transmit external loads to the core energy consumption steel plates and connect the core energy consumption steel plates and the end connecting plates into a whole. Preferably, the connection plate is arranged at a connection part of the core energy consumption steel plate and the end connection plate.
In addition, both sides of the lateral restraining plate 12 are provided with notches 121, and the connecting plate 15 is installed at the positions of the notches 121.
The connecting plate 15 is arranged at the connecting part of the end connecting plate 14 and the core energy consumption steel plate 2, and the end connecting plate 14 and the core energy consumption steel plate 2 are fixedly connected by the connecting plate 15 through a first fixing structure. The arrangement is that the core energy dissipation steel plate is connected with the end connecting plate through the first fixing structure to form a whole.
In addition, the two lateral restraint plates 12 and the plurality of filling plates 13 are fixedly connected through a second fixing structure. The arrangement can reliably and fixedly connect the plurality of filling plates with the two lateral restraining plates.
The gap between the end connecting plate 14 and the core energy consumption steel plate 2 is not attached, the gap between the core energy consumption steel plate 2 and the lateral restraining plates 12 on the upper side and the lower side is not attached, and the gap between the core energy consumption steel plate 2 and the plurality of filling plates 13 is not attached. The gap is set for keeping the buffer space or facilitating the mutual installation and matching.
In addition, the side restraint plate 12 and the end connection plate 4 are provided with reserved holes 122 at four corners thereof. The reserved hole is arranged to facilitate maintenance work by inserting a steel bar into the reserved hole when the buckling restrained brace is maintained after an earthquake.
The lateral restraint plate 12, the plurality of filling plates 13, the end connecting plate 14 and the connecting plate 15 are all made of high-strength steel, the core energy consumption steel plate 2 is made of low-yield-point steel, and the thickness of the connecting plate 15 is larger than those of the lateral restraint plate 12, the plurality of filling plates 13 and the end connecting plate 14. The core energy consumption steel plate is made of low-yield-point steel with low strength and good hysteretic performance. The lateral restraint plate, the filling plate, the connecting plate and the end connecting plate are made of high-strength steel, and yield can be avoided in the using process. The connecting plate adopts the size that cross-sectional thickness is great, avoids in the use, and the connecting plate takes place buckling restrained brace local damage because of the rigidity is not enough.
In addition, the first fixing structure and the second fixing structure are both bolts 3. It should be noted that the bolt 3 is not a limiting option, but is preferred, and other detachable fastening structures are possible. The bolt 3 is a friction type high-strength bolt.
Specifically, the method comprises the following steps:
the lateral restraint plates 12 are arranged on the upper side and the lower side of the core energy consumption steel plate 2 and are used for preventing the core energy consumption steel plate 2 from buckling out of the plane; in addition, the left side and the right side of the core energy consumption steel plate 2 are provided with the filling plates 13 which mainly have the functions of limiting the lateral buckling of the core energy consumption steel plate 2 and limiting, the filling plates are arranged in a three-section mode, two holes are reserved, and the filling plates have the functions of knocking out the core energy consumption steel plate from the side surface when the core energy consumption steel plate is detached and not taking down the lateral restraint plate. Gaps of about 1mm are reserved between the core energy consumption steel plate 2 and the lateral restraint plate 12 and between the core energy consumption steel plate and the filling plate 13. The end connecting plates 14 are positioned at two ends of the core energy consumption steel plate 2 in the longitudinal direction, and one end of each end connecting plate is connected with an external structure and mainly plays a role in transferring external load; the other end of the core energy consumption steel plate is connected with the core energy consumption steel plate 2 through a connecting plate 15 by using a bolt 3, in addition, a wing plate for preventing buckling can be arranged on the end connecting plate 14, the stability of the connecting plate is enhanced, the connecting plate is prevented from buckling under the action of load, and a gap of about 1mm is reserved at the connecting part of the core energy consumption steel plate 2 and the end connecting plate 14; the connecting plates 14 are arranged on the upper side and the lower side of the connecting part of the core energy consumption steel plate 2 and the end connecting plate 14, are used for transmitting external loads to the core energy consumption steel plate 2, play a role in restraining the end part of the core energy consumption steel plate 2 from buckling, and connect the core energy consumption steel plate 2 and the end connecting plate 14 into a whole. The bolts 3 connect all the parts to form a complete maintainable buckling-restrained energy-dissipation supporting system, and the supporting system is coordinated to bear force together.
The core energy consumption steel plate 2 is made of steel with low strength and good hysteretic performance.
The lateral restraint plates 12, the filling plates 13, the connecting plates 15 and the end connecting plates 14 are made of high-strength steel materials, and yield is avoided in the using process.
The connecting plate 15 is of a size with a large section thickness, so that the local damage of the buckling-restrained brace caused by insufficient rigidity of the connecting plate in the use process is avoided.
The positions corresponding to the connecting positions of the end connecting plates 14 on the four corners of the lateral restraint plate 12 are provided with reserved holes 122, and the function of the lateral restraint plate is that when the buckling restrained brace is repaired after an earthquake, steel rods are inserted into the reserved holes to perform maintenance.
The specific maintenance steps are as follows: after earthquake, inserting a steel bar into a hole reserved in the lateral restraint plate, unscrewing a bolt, and taking off a filling plate on one side; taking down the damaged core energy consumption steel plate 2, and replacing a completely new core energy consumption steel plate; and thirdly, installing the filling plate, screwing bolts at all parts, and taking down the steel bar to finish the quick repair of the buckling-restrained energy-dissipation brace. It can be seen that the maintenance process of the maintainable buckling-restrained brace is very simple, and the quick maintenance can be realized.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The maintainable buckling-restrained brace device is characterized by comprising an external restraint system (1) and a core energy-dissipation steel plate (2), wherein the external restraint system (1) is provided with a cavity structure (11) for preventing the core energy-dissipation steel plate (2) from buckling and installing the core energy-dissipation steel plate (2).
2. The repairable buckling restrained brace apparatus according to claim 1, wherein the external restraint system (1) comprises two lateral restraint plates (12), a plurality of filling plates (13) and two end connection plates (14), the two lateral restraint plates (12) are disposed on upper and lower sides of the core energy dissipation steel plate (2), the plurality of filling plates (13) are disposed between the two lateral restraint plates (12) and located on opposite sides of the core energy dissipation steel plate (2), and the two end connection plates (14) are disposed between the two lateral restraint plates (12) and located on the other opposite sides of the core energy dissipation steel plate (2).
3. The serviceable buckling restrained brace device according to claim 2, wherein the cavity structure (11) is formed surrounded by two lateral restraining plates (12), a number of filler plates (13) and two end connection plates (14).
4. The serviceable buckling restrained brace device according to claim 2 or 3, wherein the external restraint system (1) is further provided with a connecting plate (15), and the end connecting plate (14) and the core energy dissipating steel plate (2) are fixedly connected by the connecting plate (15).
5. The serviceable buckling restrained brace arrangement as claimed in claim 4, wherein the lateral restraining plate (12) is provided with notches (121) on both sides, the connection plate (15) being mounted at the location of the notches (121).
6. The repairable buckling restrained brace apparatus according to claim 4, wherein the connection plates (15) are provided at the connection portions of the end connection plates (14) and the core energy dissipation steel plates (2), and the connection plates (15) fixedly connect the end connection plates (14) and the core energy dissipation steel plates (2) through a first fixing structure.
7. The serviceable buckling restrained brace apparatus as claimed in claim 2, wherein the two lateral restraining plates (12) and the plurality of infill plates (13) are fixedly connected by a second fastening structure.
8. The repairable buckling restrained brace device according to claim 2, wherein a gap is formed between the end connection plate (14) and the core energy dissipation steel plate (2) and is not attached to the core energy dissipation steel plate, a gap is formed between the core energy dissipation steel plate (2) and the lateral restraining plates (12) on the upper and lower sides and between the core energy dissipation steel plate (2) and the plurality of filling plates (13) and is not attached to the core energy dissipation steel plate.
9. The serviceable buckling restrained brace arrangement as claimed in claim 2, wherein the corresponding corners of the lateral restraining plates (12) and the end connection plates (4) are provided with preformed holes (122).
10. The serviceable buckling restrained brace apparatus as claimed in any one of claims 1 to 9, wherein the core energy dissipating steel plate (2) is a low yield point steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011468275.XA CN112575919A (en) | 2020-12-14 | 2020-12-14 | Maintainable buckling-restrained energy-dissipation supporting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011468275.XA CN112575919A (en) | 2020-12-14 | 2020-12-14 | Maintainable buckling-restrained energy-dissipation supporting device |
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| CN112575919A true CN112575919A (en) | 2021-03-30 |
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| CN202011468275.XA Pending CN112575919A (en) | 2020-12-14 | 2020-12-14 | Maintainable buckling-restrained energy-dissipation supporting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700213A (en) * | 2021-09-17 | 2021-11-26 | 中衡设计集团股份有限公司 | Assembled buckling-restrained energy-dissipation brace with web plate with holes |
| CN113846767A (en) * | 2021-10-14 | 2021-12-28 | 石家庄铁道大学 | Annular SMA cable-based graded energy-consumption type self-resetting buckling-restrained constraint device and manufacturing method thereof |
| US11371241B2 (en) * | 2019-09-27 | 2022-06-28 | Changsha University Of Science & Technology | Damper for energy dissipation |
-
2020
- 2020-12-14 CN CN202011468275.XA patent/CN112575919A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11371241B2 (en) * | 2019-09-27 | 2022-06-28 | Changsha University Of Science & Technology | Damper for energy dissipation |
| CN113700213A (en) * | 2021-09-17 | 2021-11-26 | 中衡设计集团股份有限公司 | Assembled buckling-restrained energy-dissipation brace with web plate with holes |
| CN113846767A (en) * | 2021-10-14 | 2021-12-28 | 石家庄铁道大学 | Annular SMA cable-based graded energy-consumption type self-resetting buckling-restrained constraint device and manufacturing method thereof |
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