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CN110725598A - Friction compound type buckling restrained energy dissipation brace - Google Patents

Friction compound type buckling restrained energy dissipation brace Download PDF

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Publication number
CN110725598A
CN110725598A CN201910891556.7A CN201910891556A CN110725598A CN 110725598 A CN110725598 A CN 110725598A CN 201910891556 A CN201910891556 A CN 201910891556A CN 110725598 A CN110725598 A CN 110725598A
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CN
China
Prior art keywords
core material
friction
sleeve
buckling restrained
energy dissipation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910891556.7A
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Chinese (zh)
Inventor
陈明源
肖世勇
张远喜
管庆松
袁维娜
廖云昆
潘文
徐赵东
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Yunnan Zhen An Damping Science And Technology Co Ltd
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Yunnan Zhen An Damping Science And Technology Co Ltd
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Application filed by Yunnan Zhen An Damping Science And Technology Co Ltd filed Critical Yunnan Zhen An Damping Science And Technology Co Ltd
Priority to CN201910891556.7A priority Critical patent/CN110725598A/en
Publication of CN110725598A publication Critical patent/CN110725598A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, 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
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention discloses a friction composite buckling restrained energy dissipation brace, which comprises a friction device and a buckling restrained energy dissipation brace, wherein the buckling restrained energy dissipation brace comprises a middle baffle, a core material component and an outer restrained sleeve, the outer restrained sleeve is sleeved in the middle of the core material component, and two ports of the outer restrained sleeve are fixedly connected with the middle baffle; the friction devices are arranged at two ends of the core material assembly and comprise end baffles, pressure plates, friction materials and outer sleeves; the outer sleeve is sleeved at two ends of the core material assembly, two ports of the outer sleeve are respectively and fixedly connected with the end baffle and the middle baffle, the pressing plate and the friction material are arranged in the outer sleeve, and the pressing plate and the friction material are connected with the core material assembly by penetrating a waist-shaped hole in the core material assembly through bolts. According to the invention, when the core material component is elastically deformed and displaced, the friction device consumes energy, so that the defect that the buckling restrained energy-consuming support can only flex and consume energy under medium and large earthquakes is overcome, the energy-consuming capability under small earthquakes is improved, the interlayer displacement angle of the small earthquakes is reduced, and the damage of the earthquake to the structure is reduced.

Description

Friction compound type buckling restrained energy dissipation brace
Technical Field
The invention relates to the technical field of earthquake resistance, in particular to a friction composite buckling restrained energy dissipation brace.
Background
China is located in two most active earthquake zones in the world, and casualties caused by earthquakes live at the top of the world. The great damage and collapse of buildings in the earthquake are the direct causes of earthquake disasters. The traditional method of seismic resistance is to dissipate seismic energy by plastic deformation of the structure itself, which entails damage or even collapse of the structure. With the rapid development of society, higher requirements are put forward on building safety. The buckling restrained energy dissipation brace (BRB) is widely used as an element for energy dissipation and shock absorption of buildings, has strong energy dissipation capacity and full hysteresis curve, can be used as a structural component, and is a damper with excellent performance after yielding. However, the conventional buckling restrained energy dissipation support is simple in structure and single in function, has high initial elastic rigidity, and cannot play an energy dissipation role under the condition of small structural displacement, so that the building structure cannot meet the requirement of a required interlayer displacement angle under the condition of small earthquake. The buckling restrained energy dissipation brace is provided with friction energy dissipation devices at two ends, the energy dissipation capacity and the energy dissipation efficiency of the buckling restrained energy dissipation brace can be improved, and the mechanism is as follows: the buckling restrained energy dissipation support core energy dissipation unit core material assembly slides or deforms under a preset load before yielding, and seismic energy is dissipated by means of friction or damping. Meanwhile, the self-vibration period is prolonged after the structure is deformed, so that the earthquake input is reduced, and the purpose of structural earthquake response is achieved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a friction composite buckling restrained energy dissipation brace, which solves the problems that: the buckling restrained energy dissipation brace can not play an energy dissipation role when resisting wind or the structure generates a small displacement action, can meet the energy dissipation requirements under small earthquake, medium earthquake and large earthquake and in the wind resisting field, and has good fatigue performance.
The technical scheme of the invention is realized as follows: a friction composite buckling restrained energy dissipation brace is characterized by comprising a friction device and a buckling restrained energy dissipation brace, wherein the buckling restrained energy dissipation brace comprises a middle baffle, a core material component and an outer restrained sleeve, the outer restrained sleeve is sleeved in the middle of the core material component, and two ports of the outer restrained sleeve are fixedly connected with the middle baffle; the friction devices are arranged at two ends of the core material assembly of the buckling-restrained energy-dissipation support core unit and comprise end baffles, pressure plates, friction materials and outer sleeves; the outer sleeve is sleeved at two ends of the core unit core material assembly, two ports of the outer sleeve are respectively and fixedly connected with the end baffle and the middle baffle, the pressing plate and the friction material are sequentially arranged in the outer sleeve from outside to inside, and the pressing plate and the friction material are connected with the core material assembly by penetrating a bolt, a nut and a gasket through a waist-shaped hole, so that the friction device is connected with the buckling restrained energy dissipation support.
Furthermore, the two ends of the core material component are sleeved with the friction devices to form connecting sections, the middle part of the core material component is sleeved with the external constraint sleeve to form a working section, and the connecting sections, the middle part and the working section are integrally formed; the core material assembly penetrates through the end baffle, the middle baffle and the outer constraint sleeve, and two ports of the outer sleeve are respectively and fixedly connected with the end baffle and the middle baffle; an outer constraint sleeve is sleeved on a core material component of the working section, and two ports of the outer constraint sleeve are respectively and fixedly connected with the middle baffle plates on the two sides. The end baffle and the middle baffle are used for limiting the friction material to slide.
Further, the core component comprises a main core and an auxiliary core, and the main core and the auxiliary core are fixedly welded, so that the section of the working section of the core component is in a straight shape, a cross shape or an H shape, and the section of the connecting section of the core component is in a cross shape or an H shape.
Furthermore, the waist-shaped holes are positioned on the connecting sections of the main core material or the auxiliary core material, and the number of the waist-shaped holes is any number. When the bolt fixes the friction material and the core material component, the core material component can reciprocate in the length range of the kidney-shaped hole.
Furthermore, gaps are reserved among the pressing plate, the friction material and the inner wall of the outer sleeve, and gaps are reserved among the pressing plate, the side face of the friction material and the main core material or the auxiliary core material. The effect of the gap is: the abrasion damage caused by the friction contact between the friction device and the inner wall of the outer sleeve and the auxiliary core material is avoided.
Furthermore, the cross sections of the external constraint sleeve and the external sleeve are in a shape of Chinese character hui and a circular ring.
Furthermore, the buckling restrained energy dissipation brace further comprises a buffer cotton plate, filling materials and non-bonding sliding materials.
Furthermore, the shapes of the end baffle and the middle baffle are matched with the shapes of the ports of the outer constraint sleeve and the outer sleeve.
Furthermore, two long sides of the main core material or the auxiliary core material of the working section are inwards sunken, and trapezoidal sunken structures are formed on the two long sides respectively.
Furthermore, the non-adhesive sliding material covers the core material assembly of the working section, the buffering cotton plate is a diamond-shaped plate and is arranged in each trapezoidal concave structure of the main core material or the auxiliary core material of the working section, the shape of the diamond-shaped plate is matched with that of the trapezoidal concave structure, and the filler is positioned between the outer constraint sleeve and the core material assembly.
The working principle is as follows: when the friction composite buckling-restrained energy-dissipation brace is in a wind-resistant state or a small earthquake, the driving force does not reach the yield bearing capacity of the core material component of the core unit of the buckling-restrained energy-dissipation brace, at the moment, the core material is in an elastic stage, the building transfers the motion generated by wind earthquake to the core material component under the action of wind power, the core material component slides and generates friction motion with a friction material, the kinetic energy is converted into heat and is dissipated in the air, and the purposes of shock absorption and wind resistance are achieved.
When the friction composite type buckling-restrained energy-dissipation brace is in an anti-seismic state, the driving force is larger than the yield bearing capacity of the core material assembly of the core unit of the buckling-restrained energy-dissipation brace, at the moment, the core material is in a plastic deformation stage after yielding, most energy generated when a building is in an earthquake is consumed by plastic deformation, and the core material assembly in the friction devices at two ends and the friction material generate friction motion, so that the energy dissipation effect can be generated, and the common energy dissipation is realized.
Compared with the prior art, the invention has the beneficial effects that: the friction composite buckling restrained energy dissipation brace is capable of resisting wind and earthquakes, and the friction devices are arranged at the two ends of the core material component of the buckling restrained energy dissipation brace, so that the buckling restrained energy dissipation brace can slide or deform under a preset load before yielding, and earthquake energy can be dissipated by means of friction or damping. The invention can meet the energy consumption requirements in the fields of small earthquake, medium earthquake, large earthquake and wind resistance, and has good fatigue performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along the direction M-M in FIG. 2;
FIG. 4 is a schematic structural diagram of a core material assembly of a core energy dissipation unit in accordance with example 1;
FIG. 5 is a schematic structural diagram of a core material assembly of a core energy dissipation unit in accordance with example 2;
FIG. 6 is a schematic structural diagram of a core material assembly of a core energy dissipation unit in accordance with example 3;
in the figure: 1-friction device, 2-buckling restrained energy dissipation brace, 1-1-end baffle, 1-2-outer sleeve, 1-3-pressing plate, 1-4-friction material, 1-5-bolt, 1-6-nut, 1-7-gasket, 2-1-core material component, 2-1-1-main core material, 2-1-2-auxiliary core material, 2-1-3-waist-shaped hole, 2-2-middle baffle, 2-3-buffer cotton plate, 2-4-outer restrained sleeve, 2-5-filling material, 2-6-non-adhesive sliding material, 1-2-1-gap A and 1-2-2-gap B.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-4, a friction composite buckling restrained energy dissipation brace is characterized by comprising a friction device 1 and a buckling restrained energy dissipation brace 2, wherein the buckling restrained energy dissipation brace 2 comprises a middle baffle 2-2, a core material component 2-1, an outer restrained sleeve 2-4, a buffer cotton plate 2-3, a filler 2-5 and a non-adhesive sliding material 2-6; the outer constraint sleeve 2-4 is sleeved in the middle of the core material component 2-1, and two ports of the outer constraint sleeve 2-4 are fixedly connected with the middle baffle 2-2;
the friction devices 1 are arranged at two ends of a core unit core material component 2-1 of the buckling restrained energy-consuming support 2 and comprise end baffles 1-1, pressure plates 1-3, friction materials 1-4 and outer sleeves 1-2; the outer sleeve 1-2 is sleeved at two ends of the core unit core material component 2-1, two end ports of the outer sleeve 1-2 are respectively and fixedly connected with the end baffle 1-1 and the middle baffle 2-2, the pressing plate 1-3 and the friction material 1-4 are sequentially arranged in the outer sleeve 1-2 from outside to inside, and the pressing plate 1-3 and the friction material 1-4 are connected with the core material component 2-1 by penetrating the bolt 1-5, the nut 1-6 and the gasket 1-7 through the waist-shaped hole 2-1-3.
The two ends of the core material component 2-1 are sleeved with the friction devices 1 to form connecting sections, the middle part of the core material component is sleeved with the outer constraint sleeve 2-4 to form a working section, and the connecting sections, the working section and the working section are integrally formed; the core material component 2-1 penetrates through the end baffle 1-1, the middle baffle 2-2 and the outer constraint sleeve 2-4, and two ports of the outer sleeve 1-2 are fixedly connected with the end baffle 1-1 and the middle baffle 2-2 respectively; an outer constraint sleeve 2-4 is sleeved on the core material component 2-1 of the working section, and two ports of the outer constraint sleeve 2-4 are respectively and fixedly connected with the middle baffles 2-2 at two sides.
The core material assembly 2-1 comprises a main core material 2-1-1 and an auxiliary core material 2-1-2 which are fixedly welded, so that the cross section of the working section of the core material assembly 2-1 is cross-shaped, and the cross section of the connecting section of the core material assembly 2-1 is cross-shaped. The waist-shaped holes 2-1-3 are positioned on the connecting section of the main core material 2-1-1, and the number of the waist-shaped holes is 4. When the connecting bolt fixes the friction material and the core material component, the core material component can reciprocate within the length range of the waist-shaped hole. A gap A1-2-1 is reserved between the pressing plate 1-3, the friction material 1-4 and the inner wall of the outer sleeve 1-2, and a gap B1-2-2 is reserved between the pressing plate 1-3, the side surface of the friction material 1-4 and the auxiliary core material 2-1-2. The clearance avoids the abrasion damage caused by the friction contact between the friction device 1 and the inner wall of the outer sleeve 1-2 and the auxiliary core material 2-1-2. The cross sections of the external constraint sleeve 2-4 and the external sleeve 1-2 are circular. The shapes of the end baffle 1-1 and the middle baffle 2-2 are matched with the shapes of the ports of the outer constraint sleeve 2-4 and the outer sleeve 1-2. Make the three better connected
The two long sides of the main core material 2-1-1 or the auxiliary core material 2-1-2 of the working section are inwards sunken, and trapezoidal sunken structures are formed on the two long sides respectively. The non-adhesive sliding material 2-6 covers the core material component 2-1 of the working section, the buffering cotton plate 2-3 is a diamond plate and is arranged in each trapezoidal concave structure of the main core material 2-1-1 or the auxiliary core material 2-1-2 of the working section, the shape of the diamond plate is matched with that of the trapezoidal concave structure, and the filler 2-5 is positioned between the outer constraint sleeve 2-4 and the core material component (2-1). The surface of the working section of the core material component 2-1 is coated with a macromolecular composite viscoelastic non-adhesive sliding material. The primary core material and the secondary core material can be the same material, or can be different materials, such as Q235B and a soft material with low yield point.
Example 2
As shown in fig. 5, the core material assembly 2-1 includes a main core material 2-1-1 and an auxiliary core material 2-1-2, which are fixedly welded to make the cross section of the working section of the core material assembly 2-1 in a straight shape and the cross section of the connecting section of the core material assembly 2-1 in a cross shape. The waist-shaped holes 2-1-3 are positioned on the connecting section of the main core material 2-1-1, and the number of the waist-shaped holes is 4. The rest of the structure is the same as in example 1.
Example 3
As shown in fig. 6, the core material assembly 2-1 includes a main core material 2-1-1 and an auxiliary core material 2-1-2, which are fixedly welded to make the section of the working section of the core material assembly 2-1 in a straight line shape and the section of the connecting section of the core material assembly 2-1 in an H shape. The waist-shaped holes 2-1-3 are positioned on the connecting section of the main core material 2-1-1, and the number of the waist-shaped holes is 4. The rest of the structure is the same as in example 1.
When the friction composite buckling-restrained energy-dissipation brace is in a wind-resistant state, the driving force does not reach the yield bearing capacity of the core material component 2-1 of the core unit of the buckling-restrained energy-dissipation brace, the core material is in an elastic stage, the building transfers the motion generated by wind vibration to the core material component 2-1 under the action of wind power, the core material component (2-1) slides and generates friction motion with the friction material 1-4, the kinetic energy is converted into heat and is dissipated in the air, and the purposes of shock absorption and wind resistance are achieved. When the friction composite type buckling-restrained energy-dissipation brace is in an anti-seismic state, the driving force is larger than the yield bearing capacity of the core material component 2-1 of the core unit of the buckling-restrained energy-dissipation brace, the core material is in a buckling plastic deformation stage, most energy generated when a building is in an earthquake is consumed by buckling plastic deformation, and the core material component 2-1 and the friction material 1-4 in the friction device 1 at two ends move relatively to generate an energy dissipation effect so as to achieve the anti-seismic purpose.
The functions of wind resistance and earthquake resistance are realized through the mode, and the friction composite type buckling restrained energy dissipation support can realize the wind resistance effect or the energy dissipation effect under small earthquake by using the friction devices at the two ends. Under the premise of the same structure, larger damping force can be provided. Or on the premise of the same damper, the overall dimension of the friction composite type buckling restrained energy dissipation brace can be smaller, and the requirement on attractive structure is better met.

Claims (10)

1. The friction composite buckling restrained energy-consuming brace is characterized by comprising a friction device (1) and a buckling restrained energy-consuming brace (2), wherein the buckling restrained energy-consuming brace (2) comprises a middle baffle (2-2), a core material assembly (2-1) and an outer restraining sleeve (2-4), the outer restraining sleeve (2-4) is sleeved in the middle of the core material assembly (2-1), and two ports of the outer restraining sleeve (2-4) are fixedly connected with the middle baffle (2-2); the friction devices (1) are arranged at two ends of a core unit core material component (2-1) of the buckling restrained energy-consuming brace (2) and comprise end baffles (1-1), pressure plates (1-3), friction materials (1-4) and outer sleeves (1-2); the outer sleeve (1-2) is sleeved at two ends of a core unit core component (2-1), two end openings of the outer sleeve (1-2) are fixedly connected with an end baffle (1-1) and a middle baffle (2-2) respectively, a pressing plate (1-3) and a friction material (1-4) are arranged in the outer sleeve (1-2) from outside to inside in sequence, and the pressing plate (1-3) and the friction material (1-4) are connected with the core component (2-1) by penetrating a bolt (1-5), a nut (1-6) and a gasket (1-7) through a waist-shaped hole (2-1-3) in the core component (2-1).
2. The friction composite type buckling restrained energy dissipation brace as claimed in claim 1, wherein the core material assembly (2-1) is integrally formed by a connecting section, a friction device (1) is sleeved at two ends of the core material assembly (2-1), and an outer restraining sleeve (2-4) is sleeved in the middle of the core material assembly; the core material component (2-1) penetrates through the end baffle (1-1), the middle baffle (2-2) and the outer constraint sleeve (2-4), and two ports of the outer sleeve (1-2) are respectively and fixedly connected with the end baffle (1-1) and the middle baffle (2-2); an outer constraint sleeve (2-4) is sleeved on a core material component (2-1) of the working section, and two ports of the outer constraint sleeve (2-4) are respectively and fixedly connected with the middle baffles (2-2) at two sides.
3. The friction composite type buckling restrained energy dissipation brace as claimed in claim 1, wherein the core material assembly (2-1) comprises a main core material (2-1-1) and an auxiliary core material (2-1-2), and the main core material and the auxiliary core material are fixedly welded to enable the section of the working section of the core material assembly (2-1) to be in a straight shape, a cross shape or an H shape, and enable the section of the connecting section of the core material assembly (2-1) to be in a cross shape or an H shape.
4. The friction composite type buckling restrained energy dissipation brace as claimed in claim 1, wherein the kidney-shaped holes (2-1-3) are located at the connecting sections of the main core material (2-1-1) or the auxiliary core materials (2-1-2), and the number of the kidney-shaped holes is any number.
5. The friction composite type buckling restrained energy dissipation brace as claimed in claim 1, wherein a gap A (1-2-1) is reserved between the pressure plate (1-3), the friction material (1-4) and the inner wall of the outer sleeve (1-2), and a gap B (1-2-2) is reserved between the pressure plate (1-3), the side surface of the friction material (1-4) and the main core material (2-1-1) or the auxiliary core material (2-1-2).
6. The friction composite type buckling restrained energy dissipation brace as claimed in claim 1, wherein the cross sections of the outer restraining sleeve (2-4) and the outer sleeve (1-2) are in a shape of Chinese character hui and circular ring.
7. The friction composite type buckling restrained brace as claimed in claim 1, wherein the buckling restrained brace (2) further comprises a buffer cotton plate (2-3), a filling material (2-5) and a non-adhesive sliding material (2-6).
8. The friction composite type buckling restrained energy dissipation brace as claimed in claim 2, wherein the shapes of the end baffle (1-1) and the middle baffle (2-2) are matched with the shapes of the end openings of the outer restraining sleeve (2-4) and the outer sleeve (1-2).
9. A friction composite type buckling restrained energy dissipation brace as defined in claim 3, wherein two long sides of the main core material (2-1-1) or the auxiliary core material (2-1-2) of the working section are recessed inwards, and a trapezoidal recessed structure is formed on each of the two long sides.
10. The friction composite type buckling restrained energy dissipation brace as claimed in claim 7, wherein the non-adhesive sliding material (2-6) covers the core material assembly (2-1) of the working section, the buffer cotton plate (2-3) is a diamond plate, the diamond plate is arranged in each trapezoidal recessed structure of the main core material (2-1-1) or the auxiliary core material (2-1-2) of the working section, the shape of the diamond plate is matched with that of the trapezoidal recessed structure, and the filler (2-5) is located between the outer restraining sleeve (2-4) and the core material assembly (2-1).
CN201910891556.7A 2019-09-20 2019-09-20 Friction compound type buckling restrained energy dissipation brace Pending CN110725598A (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN112359999A (en) * 2020-11-18 2021-02-12 山东塞米克工程科技有限公司 Friction-metal yield composite energy dissipation steel support
CN113175115A (en) * 2021-05-11 2021-07-27 四川大学 Double-rigidity buckling restrained damper
CN113279495A (en) * 2021-06-17 2021-08-20 昆明理工大学 Axial metal damper
CN114622761A (en) * 2022-04-28 2022-06-14 震安科技股份有限公司 Compound type frictional buckling restrained brace

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CN109356298A (en) * 2018-11-02 2019-02-19 江苏蓝科减震科技有限公司 Single order friction-type buckling restrained brace
CN109972759A (en) * 2019-04-17 2019-07-05 智性科技南通有限公司 A kind of friction-anti-buckling support of metal yield composite damping
CN110158453A (en) * 2019-07-01 2019-08-23 沈阳建筑大学 A kind of BRB and the concatenated damper of carriage and its construction method
CN211622802U (en) * 2019-09-20 2020-10-02 震安科技股份有限公司 Friction compound type buckling restrained energy dissipation brace

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CN101575884A (en) * 2009-05-27 2009-11-11 清华大学 Reinforced-fiber composite constraining anti-buckling energy-consumption steel timbering
CN103174229A (en) * 2013-03-12 2013-06-26 同济大学 Novel compound energy-dissipation and shock-reduction support
JP2018009294A (en) * 2016-07-11 2018-01-18 清水建設株式会社 Damper for buckling restraining brace
CN106400997A (en) * 2016-09-14 2017-02-15 东南大学 Round-pipe self-centering buckling restrained brace end connecting device
CN107514068A (en) * 2017-08-29 2017-12-26 同济大学 Double ranks surrender energy dissipating bracing members
CN109356298A (en) * 2018-11-02 2019-02-19 江苏蓝科减震科技有限公司 Single order friction-type buckling restrained brace
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112359999A (en) * 2020-11-18 2021-02-12 山东塞米克工程科技有限公司 Friction-metal yield composite energy dissipation steel support
CN112359999B (en) * 2020-11-18 2022-04-12 山东塞米克工程科技有限公司 Friction-metal yield composite energy dissipation steel support
CN113175115A (en) * 2021-05-11 2021-07-27 四川大学 Double-rigidity buckling restrained damper
CN113279495A (en) * 2021-06-17 2021-08-20 昆明理工大学 Axial metal damper
CN114622761A (en) * 2022-04-28 2022-06-14 震安科技股份有限公司 Compound type frictional buckling restrained brace
CN114622761B (en) * 2022-04-28 2024-01-02 震安科技股份有限公司 Composite friction buckling restrained brace

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