CN117005570A - Buckling restrained brace with double-stage yielding - Google Patents
Buckling restrained brace with double-stage yielding Download PDFInfo
- Publication number
- CN117005570A CN117005570A CN202310996962.6A CN202310996962A CN117005570A CN 117005570 A CN117005570 A CN 117005570A CN 202310996962 A CN202310996962 A CN 202310996962A CN 117005570 A CN117005570 A CN 117005570A
- Authority
- CN
- China
- Prior art keywords
- core material
- energy
- buckling restrained
- restrained brace
- core
- 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.)
- Withdrawn
Links
- 239000011162 core material Substances 0.000 claims abstract description 194
- 238000005265 energy consumption Methods 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000000945 filler Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a buckling restrained brace with double-stage yielding, which comprises a sealing cylinder, a filler and energy-consumption core materials, wherein two end parts of the energy-consumption core materials extend out of sealing plates at two ends of the sealing cylinder, two outer end parts of the energy-consumption core materials and through holes of the sealing plates can slide relatively, the filler is filled in an inner cavity of the sealing cylinder, the energy-consumption core materials comprise a first core material and a second core material component, the first core material and the second core material component are arranged in parallel, the two outer end parts of the first core material and the second core material component are fixedly connected, the second core material component comprises two second core materials, the inner end parts of the two second core materials, which are positioned in the sealing cylinder, are connected through a limiting device, and the two second core materials slide relatively in a preset stroke. According to the buckling restrained brace with double-stage yielding, energy-consumption and earthquake-resistant effects can be achieved in small earthquake and large earthquake respectively through the energy-consumption core materials which are arranged in parallel.
Description
Technical Field
The invention relates to the technical field of buckling restrained brace, in particular to a buckling restrained brace with double-stage yielding.
Background
It can be found from major earthquake disaster investigation of the whole country that more than 95% of casualties are caused by damage or collapse of buildings, and the country is more and more important in building earthquake resistance, so that buckling restrained braces are required to be installed in the building to play an earthquake-resistant role.
The buckling restrained brace mainly comprises a core energy dissipation component, a filling material and a restraining member, wherein the filling material and the restraining member limit buckling behavior of the core energy dissipation component in a stress state. During an earthquake, a large amount of energy consumption is carried out by the buckling restrained brace so as to protect other main body structures from being damaged as little as possible. The buckling restrained brace can yield without buckling when being pressed and can extend when being pulled, so that the energy-consumption anti-seismic effect is achieved.
The existing buckling restrained brace has only one fixed yield point, and generally only plays a role in energy consumption and earthquake resistance in the case of heavy earthquake, so that the yield force of the selected buckling restrained brace is relatively large, and the energy consumption effect cannot be exerted due to the fact that the rigidity of the buckling restrained brace is too large in the case of light earthquake. If the yield force of the buckling restrained brace is smaller, the energy consumption capability is limited when the buckling restrained brace is in a large earthquake, and the buckling restrained brace cannot consume energy and resist earthquake.
Patent grant publication number CN217352892U discloses a two-stage buckling restrained brace comprising a restraining member, an edge banding and an energy-dissipating core plate; the energy-consumption core plate and the edge banding strips are arranged between the two constraint members, and the edge banding strips are arranged at two ends of the energy-consumption core plate in the width direction; the energy-consuming core plate comprises a first-order energy-consuming section and a second-order energy-consuming section, wherein the width of the second-order energy-consuming section is larger than that of the first-order energy-consuming section.
In the above patent, through dividing into two kinds of different width sections with the power consumption core for it can carry out different yield strength, surpass the yield scope of first energy consumption section after, the second order energy consumption section begins to function, and then has guaranteed the antidetonation effect, has satisfied people's user demand. However, the first energy consumption section and the second energy consumption section are arranged on the same energy consumption core plate, the strength of the first energy consumption section is lower than that of the second energy consumption section, and if the first energy consumption section breaks in a large earthquake, the energy consumption core plate cannot play a role in energy consumption when being pulled.
Therefore, there is a need to develop a buckling restrained brace that yields in two stages for the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a buckling restrained brace with double-stage yielding, which can respectively play a role in energy dissipation and earthquake resistance in small earthquake and large earthquake through energy dissipation core materials arranged in parallel.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses a buckling restrained brace with double-stage yielding, which comprises a sealing cylinder, a filler and an energy-consumption core material, wherein two end parts of the energy-consumption core material extend out of sealing plates at two ends of the sealing cylinder, two outer end parts of the energy-consumption core material and through holes of the sealing plates can slide relatively, the filler is filled in an inner cavity of the sealing cylinder, the energy-consumption core material comprises a first core material and a second core material component, the first core material and the second core material component are arranged in parallel, the two outer end parts of the first core material and the second core material component are fixedly connected, the second core material component comprises two second core materials, the two inner end parts of the two second core materials, which are positioned in the sealing cylinder, are connected through a limiting device, the two second core materials slide relatively in a preset stroke, and the yield point of the second core material is larger than that of the first core material.
Further, the limiting device comprises a connecting piece and a limiting bolt, and two connecting pieces are symmetrically fixed on two side surfaces of the inner end part of the second core material on the right side; the inner end part of the second core material on the left side is provided with a waist-shaped hole along the axial direction, and the inner end part of the second core material on the left side is arranged in a strip-shaped cavity formed by the two connecting pieces in a sliding way; the limiting bolt penetrates through the waist-shaped hole and is fixedly connected with the connecting piece, and the diameter of the limiting bolt is matched with the width of the waist-shaped hole.
Further, the two ends of the waist-shaped hole are respectively fixed with a first elastic body, and the limit bolt is positioned between the two first elastic bodies.
Further, the displacement travel of the limit bolt along the length direction of the waist-shaped hole is smaller than the breaking deformation of the first core material.
Further, the limiting device comprises a fixed block and a limiting block, wherein the fixed block is fixedly connected to the inner end part of the second core material on the right side, a hollow cavity is formed in the fixed block, and the inner end part of the second core material on the left side is slidably arranged in the hollow cavity of the fixed block; the limiting block is fixed at the end of the inner end part of the second core material at the left side; the side of the fixed block is provided with a guide hole corresponding to the section of the second core material, and the circumferential outer surface of the limiting block is in sliding connection with the inner side of the hollow cavity.
Furthermore, the first core material and the second core material are plate bodies with the middle parts narrower than the two end parts, and the connection parts of the middle parts and the two end parts are provided with second elastic bodies.
Further, protrusions are arranged on the upper side and the lower side of the middle of the first core material.
Further, the two outer ends of the first core material and the second core material component are fixedly connected through a strip-shaped plate, and the strip-shaped plate is vertically and centrally arranged between the plate surfaces of the two outer ends.
Further, the first core material is specifically made of LY160 steel, and the second core material is specifically made of LY225 steel.
Further, the energy consumption core material and the outer surface of the limiting device are coated with a non-adhesive layer formed by non-adhesive materials.
Compared with the prior art, the invention has the beneficial technical effects that:
according to the buckling restrained brace with double-stage yielding, the first core material is subjected to yielding energy consumption in small earthquake; when the earthquake happens, the first core material yields and consumes energy, and drives the second core materials to slide at the same time, after the relative sliding stroke of the two second core materials reaches the maximum, the two second core materials are limited by the limiting device, and the two second core materials bear stress and yield and consume energy at the same time; namely, only the first core material participates in energy dissipation and earthquake resistance during small earthquake, and the first core material and the second core material participate in energy dissipation and earthquake resistance together during large earthquake, and even if the first core material breaks during large earthquake, the second core material can still play the role of energy dissipation and earthquake resistance.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a schematic view of a front view of a buckling restrained brace of the present invention in dual-stage yielding;
fig. 2 is a schematic front view of the energy dissipation core of embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the rear side three-dimensional structure of the energy-dissipating core material according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing the front side of the energy dissipating core material according to embodiment 1 of the present invention;
FIG. 5 is a schematic diagram of an explosion structure of an energy-dissipating core material according to embodiment 1 of the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 5A;
FIG. 7 is a schematic cross-sectional view of a limiting device according to embodiment 2 of the present invention;
fig. 8 is a schematic perspective view of a fixing block according to embodiment 2 of the present invention.
Reference numerals illustrate: 1. sealing the cylinder; 2. a sealing plate; 3. a first core material; 301. a protrusion; 4. a second core material; 401. a waist-shaped hole; 5. a connecting piece; 6. a limit bolt; 7. a first elastomer; 8. a fixed block; 9. a limiting block; 10. a second elastomer; 11. a strip-shaped plate.
Detailed Description
The invention aims to provide a buckling restrained brace with double-stage yielding, which can respectively play a role in energy consumption and earthquake resistance in small earthquake and large earthquake through energy consumption core materials arranged in parallel.
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the invention. 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.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "middle," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.
Referring to the drawings, FIG. 1 is a schematic view of a front view of a buckling restrained brace of the present invention in dual stage yielding; fig. 2 is a schematic front view of the energy dissipation core of embodiment 1 of the present invention; FIG. 3 is a schematic view showing the rear side three-dimensional structure of the energy-dissipating core material according to embodiment 1 of the present invention; FIG. 4 is a schematic view showing the front side of the energy dissipating core material according to embodiment 1 of the present invention; FIG. 5 is a schematic diagram of an explosion structure of an energy-dissipating core material according to embodiment 1 of the present invention; FIG. 6 is an enlarged schematic view of the structure of FIG. 5A; FIG. 7 is a schematic cross-sectional view of a limiting device according to embodiment 2 of the present invention; fig. 8 is a schematic perspective view of a fixing block according to embodiment 2 of the present invention.
Example 1
As shown in fig. 1 to 6, the energy-consumption sealing device comprises a sealing cylinder 1, a filler and an energy-consumption core material, wherein two end parts of the energy-consumption core material extend out of sealing plates 2 at two ends of the sealing cylinder 1, two outer end parts of the energy-consumption core material and through holes of the sealing plates 2 can slide relatively, the shape of each through hole corresponds to the shape of the cross section of each outer end part, the filler is filled in an inner cavity of the sealing cylinder 1, the energy-consumption core material comprises a first core material 3 and a second core material component, the first core material 3 and the second core material component are arranged in parallel, the two outer end parts of the first core material 3 and the second core material component are fixedly connected, the second core material component comprises two second core materials 4, the inner end parts of the two second core materials 4 positioned in the sealing cylinder 1 can slide relatively through a limiting device, and the two second core materials 4 are limited by the limiting device to slide relatively; the yield point of the second core material 4 is greater than the yield point of the first core material 3.
As shown in fig. 2 to 6, the limiting device is that two connecting pieces 5 (which can also be fixed by welding) are symmetrically fixed on two side surfaces of the inner end part of the right second core material 4 through bolts and nuts, and a strip-shaped cavity is formed between the two connecting pieces 5; the inner end part of the left second core material 4 is provided with a waist-shaped hole 401 along the axial direction, and the inner end part of the left second core material 4 is arranged in a strip-shaped cavity formed by the two connecting pieces 5 in a sliding way; the waist-shaped hole 401 is internally provided with a limit bolt 6, the diameter of the limit bolt 6 is matched with the width dimension of the waist-shaped hole 401, the diameter of the limit bolt 6 is smaller than the length dimension of the waist-shaped hole 401, and two ends of the limit bolt 6 are fixedly connected with the two connecting pieces 5 respectively; the end head of the left second core material 4 is positioned in the middle of the strip-shaped inner cavity in a normal state; the limit bolt 6 may be a bolt with no screw thread in the middle, and the limit bolt 6 may be a rivet. The second core material 4 is limited to continue sliding by the limit bolts 6 when sliding to both ends of the waist-shaped hole 401.
It will be appreciated that the connecting piece 5 may be made as a channel, and the notches of the two connecting pieces 5 are arranged opposite to each other, so as to guide and limit the left second core material 4.
As shown in fig. 5 and 6, the first elastic bodies 7 are respectively fixed at two ends of the waist-shaped hole 401, and the limit bolt 6 is positioned between the two first elastic bodies 7, so that a sufficient compression space is ensured when the second core material 4 at the left side is displaced, and the central position of the limit bolt 6 in the waist-shaped hole 401 can be ensured during assembly; the first elastic body 7 may be made of polyurethane or rubber material, and the first elastic body 7 may be fixedly connected with the waist-shaped hole 401 through vulcanization or adhesion.
As shown in fig. 2 to 6, the first core material 3 and the second core material 4 are both plate bodies with the middle part narrower than the two end parts, and the connection parts between the middle part and the two end parts are provided with the second elastic bodies 10 so as to ensure that enough deformation or displacement space is generated when the middle parts of the first core material 3 and the second core material yield; the second elastic body 10 may be made of polyurethane, nylon, or rubber material, and the second elastic body 10 may be fixedly connected to the first core material 3 and the second core material 4 by vulcanization or adhesion.
It will be appreciated that the first core material 3 and the second core material 4 may be not only plate bodies but also columns or other shapes or combinations thereof.
As shown in fig. 2 to 6, the upper and lower sides of the middle part of the first core material 3 are provided with protrusions 301, and the protrusions 301 are limited by the filler, so that the protrusions are fixed, and the stress uniformity of the two ends of the first core material 3 is ensured.
As shown in fig. 1, 3 and 5, the two outer ends of the first core material 3 and the second core material assembly are welded and fixed together by a strip-shaped plate 11, and the strip-shaped plate 11 is vertically and centrally arranged between the plate surfaces of the two outer ends.
The yield force of the second core material 4 is greater than the yield force of the first core material 3, which has two implementations.
First, the first core material 3 may be a LY100 or LY160 steel material, preferably a LY160 steel material, and the second core material 4 may be a LY225 steel material.
Secondly, the sections of the first core material 3 and the second core material 4 are different, and when the sections of the second core material 4 are the same steel materials, the section of the second core material is larger than the section of the first core material 3; in the case of different steels, the cross sections of the two are determined as the case may be.
It is understood that the energy consuming core materials may be reasonably selected from LY100, LY160, LY225, Q235, Q355, Q390 and Q420 according to standard recommendations.
The displacement stroke of the limit bolt 6 relative to the length direction of the waist-shaped hole 401 is smaller than the breaking deformation of the first core material 3.
The first core material 3 has approached the yield limit in the earthquake, so the yield energy consumption effect is very small, and the second core material 4 in the earthquake plays a main energy consumption and earthquake resistance role.
The filler is micro-expansion or self-leveling high-strength mortar.
The outer surface of the first core material 3 is coated with a layer of non-adhesive layer formed by non-adhesive materials, and the outer surfaces of the second core material 4 and the limiting device are coated with a layer of non-adhesive layer formed by non-adhesive materials; the non-adhesive material may be a thin layer formed of soft materials such as silica gel, latex, rubber, or asphalt tape, so as to ensure that the first core material 3 and the second core material 4 are not adhered to the filler, so that the first core material 3 and the second core material 4 can smoothly yield.
As shown in fig. 1, a lifting lug is arranged on the outer wall of the sealing cylinder 1, so that the device is convenient to carry or install.
The invention relates to a buckling restrained brace working principle of double-stage yielding, which comprises the following steps: in the small shock, the yield of the first core material 3 is lengthened when being under tension, the yield of the first core material 3 is compressed when being under pressure, so that the energy-consuming and shock-resistant effects are achieved, meanwhile, the first core material 3 drives the second core material 4 to synchronously slide and displace through the outer end part, the sliding stroke of the second core material 4 cannot reach the maximum value, the second core material 4 is not under tension or pressure, and the second core material 4 does not exert the energy-consuming and shock-resistant effects.
In a large shock, the yield of the first core material 3 is lengthened when the first core material is under tension, the yield of the first core material 3 is compressed when the first core material is under pressure, meanwhile, the outer end part of the first core material 3 drives the second core material 4 to synchronously slide and displace, and the sliding stroke is limited by the limiting bolt 6 when reaching the maximum stroke; when the outward sliding travel of the second core materials 4 reaches the maximum value, the two second core materials 4 bear the tensile force at the same time, and the yield of the second core materials 4 is prolonged; when the inward sliding stroke of the second core material 4 reaches the maximum value, the two second core materials 4 bear pressure at the same time, and the second core materials 4 yield and are compressed. Therefore, in the earthquake, the first core material 3 firstly yields and consumes energy, and the second core material 4 secondly yields and consumes energy, so that the energy-consuming and earthquake-resistant effects are achieved.
Example 2
Embodiment 2 differs from embodiment 1 in the variation of the structure of the stopper.
As shown in fig. 7 and 8, a fixed block 8 is welded and fixed at the inner end of the right second core material 4, a hollow cavity is formed in the fixed block 8, and the inner end of the left second core material 4 is slidably arranged in the hollow cavity of the fixed block 8; a limiting block 9 is welded and fixed at the end of the inner end part of the left second core material 4; the side surface of the fixed block 8 is provided with a guide hole corresponding to the section of the second core material 4, and the circumferential outer surface of the limiting block 9 is in sliding connection with the inner side surface of the hollow cavity; the limiting block 9 is normally positioned in the middle of the cavity. The second core material 4 slides outwards under tension, and the second core material 4 reaches the maximum sliding stroke when the side surface of the limiting block 9 abuts against the inner wall of the fixed block 8; the second core material 4 slides inwards under pressure, and the second core material 4 reaches the maximum sliding stroke when the other side surface of the limiting block 9 abuts against the inner wall of the fixed block 8.
In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, so that the same similar parts of each embodiment refer to each other, and each embodiment may be combined with 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 above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. The buckling restrained brace with the double-stage yielding comprises a sealing cylinder (1), a filler and an energy-consumption core material, wherein two end parts of the energy-consumption core material extend out of sealing plates (2) at two ends of the sealing cylinder (1), two outer end parts of the energy-consumption core material and through holes of the sealing plates (2) can slide relatively, and the filler is filled in an inner cavity of the sealing cylinder (1), and the buckling restrained brace is characterized in that the energy-consumption core material comprises a first core material (3) and a second core material component, the first core material (3) and the second core material component are arranged in parallel, the two outer end parts of the first core material (3) and the second core material component are fixedly connected, the second core material component comprises two second core materials (4), the two second core materials (4) are located at the inner end parts inside the sealing cylinder (1) and are connected through limiting devices, and the two second core materials (4) slide relatively in a preset stroke; the yield point of the second core material (4) is greater than the yield point of the first core material (3).
2. The dual-stage yielding buckling restrained brace of claim 1, wherein: the limiting device comprises a connecting piece (5) and a limiting bolt (6), and two connecting pieces (5) are symmetrically fixed on two side surfaces of the inner end part of the second core material (4) on the right side; the inner end part of the second core material (4) at the left side is provided with a waist-shaped hole (401) along the axial direction, and the inner end part of the second core material (4) at the left side is arranged in a strip-shaped cavity formed by the two connecting pieces (5) in a sliding way; the limiting bolt (6) penetrates through the waist-shaped hole (401) and is fixedly connected with the connecting piece (5), and the diameter of the limiting bolt (6) is matched with the width of the waist-shaped hole (401).
3. The dual-stage yielding buckling restrained brace of claim 2, wherein: the two ends of the waist-shaped hole (401) are respectively fixed with a first elastic body (7), and the limit bolt (6) is positioned between the two first elastic bodies (7).
4. The dual-stage yielding buckling restrained brace of claim 2, wherein: the displacement stroke of the limit bolt (6) relative to the length direction of the waist-shaped hole (401) is smaller than the stretch-break deformation of the first core material (3).
5. The dual-stage yielding buckling restrained brace of claim 1, wherein: the limiting device comprises a fixed block (8) and a limiting block (9), wherein the fixed block (8) is fixedly connected to the inner end part of the second core material (4) at the right side, a hollow cavity is formed in the fixed block (8), and the inner end part of the second core material (4) at the left side is slidably arranged in the hollow cavity of the fixed block (8); the end head of the inner end part of the second core material (4) at the left side is fixed with the limiting block (9); the side of the fixed block (8) is provided with a guide hole corresponding to the section of the second core material (4), and the circumferential outer surface of the limiting block (9) is in sliding connection with the inner side of the hollow cavity.
6. The dual-stage yielding buckling restrained brace of any of claims 1-5, wherein: the first core material (3) and the second core material (4) are plate bodies with the middle parts narrower than the two end parts, and the connection parts of the middle parts and the two end parts are provided with second elastic bodies (10).
7. The dual-stage yielding buckling restrained brace of claim 1, wherein: protrusions (301) are arranged on the upper side and the lower side of the middle of the first core material (3).
8. The dual-stage yielding buckling restrained brace of claim 1, wherein: the two outer end parts of the first core material (3) and the second core material component are fixedly connected through a strip-shaped plate (11), and the strip-shaped plate (11) is vertically and centrally arranged between the plate surfaces of the two outer end parts.
9. The dual-stage yielding buckling restrained brace of claim 5, wherein: the first core material (3) is specifically made of LY160 steel, and the second core material (4) is specifically made of LY225 steel.
10. The dual-stage yielding buckling restrained brace of claim 1, wherein: and the outer surfaces of the energy consumption core material and the limiting device are coated with a non-adhesive layer formed by non-adhesive materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310996962.6A CN117005570A (en) | 2023-08-09 | 2023-08-09 | Buckling restrained brace with double-stage yielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310996962.6A CN117005570A (en) | 2023-08-09 | 2023-08-09 | Buckling restrained brace with double-stage yielding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117005570A true CN117005570A (en) | 2023-11-07 |
Family
ID=88563264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310996962.6A Withdrawn CN117005570A (en) | 2023-08-09 | 2023-08-09 | Buckling restrained brace with double-stage yielding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117005570A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117286943A (en) * | 2023-11-27 | 2023-12-26 | 北京市建筑设计研究院有限公司 | Series-type buckling restrained brace with double yield points |
-
2023
- 2023-08-09 CN CN202310996962.6A patent/CN117005570A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117286943A (en) * | 2023-11-27 | 2023-12-26 | 北京市建筑设计研究院有限公司 | Series-type buckling restrained brace with double yield points |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111962703B (en) | Self-resetting buckling-restrained brace and energy dissipation method thereof | |
| CN117005570A (en) | Buckling restrained brace with double-stage yielding | |
| EP3739139A1 (en) | Self-resetting energy-dissipating steel support having shape memory alloy damper | |
| CN111335146B (en) | Frame type replaceable buckling-restrained damping energy dissipation device and using method thereof | |
| CN105155710A (en) | Self-resetting mild steel energy-dissipating brace | |
| CN108999455B (en) | Easy-reset high-energy-consumption buckling restrained brace | |
| CN111005613A (en) | Viscoelastic friction type energy-consumption self-resetting buckling-restrained brace | |
| KR20120078108A (en) | A device for coupling beam on column | |
| CN113833147B (en) | Multistage replaceable self-resetting buckling-restrained brace device | |
| CN109723159B (en) | Full-length constraint weldless buckling constraint support | |
| CN104989002A (en) | Linear steel plate and rubber laminated and combined type buckling restrained brace | |
| CN109629896B (en) | Combined type double-yield buckling restrained energy-dissipation brace | |
| CN210712520U (en) | Assembled buckling-restrained brace device for improving anti-seismic performance of bridge | |
| CN115263018B (en) | Multistage reset-multistage energy consumption buckling restrained brace | |
| CN114016795B (en) | Buckling restrained corrugated pipe energy dissipation supporting device based on ring spring self-resetting and manufacturing method | |
| CN215670233U (en) | Friction compound type buckling restrained brace | |
| KR20200025356A (en) | Seismic reinforcement vibration control device having double-plate intermediary damper | |
| CN215802397U (en) | Novel multistage self-resetting buckling-restrained brace device | |
| CN116044033A (en) | Novel buckling restrained brace with double-order yield | |
| CN114922296A (en) | Three-dimensional energy-consumption shock insulation support | |
| CN215483738U (en) | Energy-consuming buckling-restrained brace component | |
| CN218715429U (en) | Civil engineering is with high-efficient shock-proof type buckling restrained brace | |
| CN215483739U (en) | Energy-consuming buckling restrained brace device | |
| CN115897832B (en) | Graded energy-consumption type buckling restrained brace device and method based on ring spring self-resetting | |
| CN118309163A (en) | Deformation-enhanced assembled buckling restrained brace device with double yield points |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20231107 |