CN113958000B - Series sleeve type double-yield-point buckling restrained brace - Google Patents
Series sleeve type double-yield-point buckling restrained brace Download PDFInfo
- Publication number
- CN113958000B CN113958000B CN202111575078.2A CN202111575078A CN113958000B CN 113958000 B CN113958000 B CN 113958000B CN 202111575078 A CN202111575078 A CN 202111575078A CN 113958000 B CN113958000 B CN 113958000B
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- soft steel
- energy consumption
- limiting
- consumption soft
- 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.)
- Active
Links
Images
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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
-
- 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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses a series sleeve type double-yield-point buckling restrained brace, which comprises: a concrete core area; the primary energy consumption soft steel pipe and the secondary energy consumption soft steel pipe are connected in series through a connecting piece, the other end of the primary energy consumption soft steel pipe is provided with a first limiting pin, and the other end of the secondary energy consumption soft steel pipe is provided with a second limiting pin; the restraint steel pipe is sleeved outside the first-stage energy consumption soft steel pipe and the second-stage energy consumption soft steel pipe and is provided with a first limiting hole and a second limiting hole; the first limiting pin and the second limiting pin are respectively embedded into the first limiting hole and the second limiting hole, and a first gap delta is formed between two sides of the first limiting pin and the first limiting hole in the axial direction1A second clearance delta is formed between two sides of the second limit pin and the second limit hole in the axial direction2And δ1＜δ2. The buckling restrained brace can play the energy consumption performance of the full anti-seismic stage of the structure, ensures the safety of the structure, has high bearing energy consumption strength, and meets the requirement of large-tonnage bearing energy consumption.
Description
Technical Field
The invention relates to the technical field of building components, in particular to a series sleeve type double-yield-point buckling restrained brace.
Background
The buckling restrained brace has the characteristics of clear damping mechanism, obvious damping effect, safety, reliability, economy and reasonability, and can meet the anti-seismic requirements of different structures. The buckling restrained brace has the advantages that the energy consumption section is a main stress unit and is generally made of steel with a low yield point, the restraining unit provides a restraining mechanism to prevent the energy consumption unit from being integrally unstable or partially buckled when being pressed by an axle, the buckling restrained brace can be made of steel pipe concrete, a steel concrete outer sleeve, a circular or polygonal steel pipe and the like, and an unbonded material provides a sliding interface between the energy consumption unit and the restraining unit, so that the buckling restrained brace has similar mechanical properties as much as possible when being pulled and pressed, and the increase of the axle force caused by the friction between the energy consumption unit and the restraining unit after being pressed and expanded is avoided.
In recent years, some researchers begin to develop a staged yielding buckling restrained brace, one part of the yielding restrained brace firstly yields and consumes energy under a small earthquake, and most of the yielding restrained brace yields and consumes energy under a medium earthquake or a large earthquake, so that the energy consumption capability of the yielding restrained brace for resisting earthquakes with different strengths is effectively improved. The existing implementation method of the staged energy consumption buckling restrained brace comprises the combination of dampers with different energy consumption mechanisms and the combination of dampers with different energy consumption materials. The existing device mostly adopts a mode that an energy consumption section with a low yield point and an energy consumption section with a high yield point are directly connected in parallel, and under the condition of the same section and length, the rigidity of the energy consumption section with the high yield point is much higher than that of the energy consumption section with the low yield point, so that the energy consumption of the energy consumption section with the low yield point is greatly influenced, and the staged yield cannot be well realized.
The inventor has carried out relevant research on the double-yield-point energy dissipation structure, but in practical application, the bearing capacity is small, the double-yield-point energy dissipation structure cannot be used for large-tonnage bearing, and the double-yield-point energy dissipation structure is not suitable for large-volume building structures such as high-rise buildings and super high-rise buildings, so that the prior structure needs to be further improved.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a buckling restrained brace, specifically a tandem sleeve type double-yield-point buckling restrained brace, so as to solve one or more problems of the existing buckling restrained brace, and especially to meet the requirement of large tonnage bearing.
The above purpose can be realized by the following technical scheme:
a tandem bushing type dual yield point buckling restrained brace, comprising:
the concrete core area is used as a buckling restrained brace buckling-restrained core unit;
the primary energy consumption soft steel pipe and the secondary energy consumption soft steel pipe are connected in series through a connecting piece, concrete is poured inside to form a concrete core area, a first limiting pin is installed at the other end of the primary energy consumption soft steel pipe, and a second limiting pin is installed at the other end of the secondary energy consumption soft steel pipe;
the restraint steel pipe is sleeved outside the first-stage energy consumption soft steel pipe and the second-stage energy consumption soft steel pipe, and the pipe walls at two ends of the restraint steel pipe are provided with a first limiting hole and a second limiting hole corresponding to the first limiting pin and the second limiting pin;
the first limiting pin and the second limiting pin are respectively embedded into the first limiting hole and the second limiting hole, the cross-sectional dimension of the first limiting pin is smaller than that of the first limiting hole, and a first gap delta is formed between two sides of the first limiting pin and the first limiting hole in the axial direction1The cross-sectional dimension of the second limit pin is smaller than that of the second limit hole, and a second gap delta is formed between two sides of the second limit pin and the second limit hole in the axial direction2And δ1＜δ2。
In some embodiments, a section of reinforcing steel bar is welded to the other end of each of the first-stage energy-consumption soft steel pipe and the second-stage energy-consumption soft steel pipe, the reinforcing steel bar, the first-stage energy-consumption soft steel pipe and the second-stage energy-consumption soft steel pipe are sleeved together in the restraint steel pipe, and the first limiting pin and the second limiting pin are mounted on the reinforcing steel bar.
In some embodiments, the reinforcing steel bar and the connecting steel bar are provided with a through hole, and the first limiting pin and the second limiting pin are integrated and penetrate through the through hole to be embedded into the first limiting hole and the second limiting hole at two ends of the constraint steel pipe; alternatively, the first and second electrodes may be,
two non-through holes are symmetrically formed in the reinforcing steel bar and the connecting steel bar, the number of the first limiting pins and the number of the second limiting pins are two, the two limiting pins are respectively inserted into the two non-through holes and are embedded into the first limiting holes and the second limiting holes at two ends of the constraint steel pipe.
In some embodiments, the connecting member is provided with a third limiting pin, a third limiting hole is formed in the wall of the restraint steel pipe corresponding to the third limiting pin, the third limiting pin is embedded into the third limiting hole, and the size of the third limiting hole is the same as the cross-sectional size of the third limiting pin, so that the third limiting pin is tightly embedded into the third limiting hole.
In some embodiments, the concrete core region further comprises an unbonded sliding layer arranged between the concrete core region and the first-stage energy dissipation soft steel pipe and/or between the first-stage energy dissipation soft steel pipe and the second-stage energy dissipation soft steel pipe and the constraint steel pipe.
In some embodiments, the connecting device further comprises a connecting sleeve sleeved at two ends of the restraining steel pipe, a fourth limiting hole is formed in the pipe wall of the connecting sleeve, and the first limiting pin and the second limiting pin are further embedded into the fourth limiting hole.
In some embodiments, the size of the fourth limiting hole is the same as the cross-sectional size of the first limiting pin and the second limiting pin, so that the first limiting pin and the second limiting pin are tightly embedded into the fourth limiting hole.
In some embodiments, a sealing plate is welded to the end of the connection sleeve, and the sealing plate is welded to an end connector.
In some embodiments, the steel materials of the first-stage energy consumption soft steel pipe and the second-stage energy consumption soft steel pipe are the same, the wall thickness of the first-stage energy consumption soft steel pipe is smaller than that of the second-stage energy consumption soft steel pipe, and the length of the first-stage energy consumption soft steel pipe is larger than that of the second-stage energy consumption soft steel pipe.
In some embodiments, the cross sections of the first-stage energy-consumption soft steel pipe, the second-stage energy-consumption soft steel pipe and the constraint steel pipe are rectangular, square or circular.
Compared with the prior art, the invention has the following beneficial effects:
(1) introducing a first-stage energy-consumption soft steel pipe and a second-stage energy-consumption soft steel pipe, and restraining the maximum deformation value delta of energy consumption by controlling first-stage buckling1And the maximum deformation value delta of the two-stage buckling constraint energy consumption2The two-stage working mode of double-yield-point design is realized, and the next-stage energy-dissipating mild steel generates yield energy dissipation under the action of small shock, so that the energy dissipation and shock absorption effects are achieved; meanwhile, the device is ensured to still have the energy consumption capability under the working conditions of medium and large earthquakes;
(2) introducing a constraint steel pipe, and when the supporting energy consumption soft steel pipe reaches a deformation value delta2Then, the device continues to provide necessary lateral stiffness for the structure through the constraint steel pipe, so that the structure is prevented from being seriously damaged and completely quitting working under the action of the estimated rare earthquake, and meanwhile, the primary energy consumption soft steel pipe and the secondary energy consumption soft steel pipe are prevented from buckling in the whole energy consumption process;
(3) the concrete core area is introduced to provide radial restraint for the first-stage and second-stage energy consumption soft steel pipes, so that the first-stage and second-stage energy consumption soft steel pipes are not bent in the whole energy consumption process; meanwhile, high-strength concrete or grouting material is adopted in the concrete core area, so that necessary constraint conditions are provided for large-tonnage bearing of the primary and secondary energy-consumption soft steel pipes, and the size and the cross section of the energy-consumption soft steel pipe meet the performance requirements of large-tonnage energy-consumption components;
(4) the end part adopts the connecting sleeve, the connecting sleeve pulls the first-level energy-consumption soft steel pipe to do axial reciprocating motion under the combined action of the limiting pin and the reinforcing steel bar, the end part node strength is higher, the large-tonnage bearing requirement is better met, the main structure and the end part connecting node are reasonable in layout, and the connection is reliable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, shall fall within the scope covered by the technical contents disclosed in the present invention.
FIG. 1 is a schematic illustration of an explosive structure according to an exemplary embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view schematically illustrating a primary energy dissipating segment and a secondary energy dissipating segment of FIG. 1;
FIG. 3 is an overall longitudinal section view schematically showing FIG. 1;
FIG. 4 is a longitudinal cross-sectional view of the left end node of FIG. 1, as exemplary;
FIG. 5 is a top plan view exemplarily illustrating the left end node of FIG. 1;
FIG. 6 is a longitudinal cross-sectional view of the right end node of FIG. 1, as exemplary;
FIG. 7 is a right end node top view exemplary showing FIG. 1;
FIG. 8 is a longitudinal cross-sectional view of the intermediate connection node of FIG. 1;
FIG. 9 is a top plan view exemplary illustrating the intermediate connection node of FIG. 1;
FIG. 10 is a schematic illustration of an explosive structure according to another exemplary embodiment of the present invention;
FIG. 11 is an overall longitudinal sectional view exemplarily showing FIG. 10;
FIG. 12 is a longitudinal cross-sectional view of the left end node of FIG. 10;
FIG. 13 is a longitudinal cross-sectional view of the right end node of FIG. 10, as exemplary;
fig. 14 is an overall structural view of still another exemplary embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention is described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In the description of the present invention, the terms "comprises/comprising," "consisting of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
It is to be understood that, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," "secured," and the like are intended to be construed broadly, and for example, as the arrangement may be in any reasonably feasible configuration, and the connection may be fixed or releasable, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "center," and the like are used in an orientation or positional relationship illustrated in the drawings for convenience in describing and simplifying the invention, and do not indicate or imply that the device, component, or structure being referred to must have a particular orientation, be constructed in a particular orientation, or be operated in a particular manner, and should not be construed as limiting the invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The buckling restrained brace mainly comprises a core unit, an outer wrapping restrained unit and a sliding mechanism unit. When the core energy consumption section bears axial pressure, the outsourcing constraint unit is utilized to constrain the transverse deformation of the core energy consumption section, so that the core energy consumption section is prevented from buckling, the core energy consumption section can generate full-section yielding under the action of axial force, and symmetrical stress performance is obtained in the stretching and compressing directions.
The existing BRB buckling restrained energy-consuming brace mainly has the following problems:
(1) the traditional buckling restrained energy-consuming brace generally has only one yield point, and the brace generally does not yield under the action of small earthquake and only provides lateral rigidity;
(2) the existing buckling restrained energy-consuming brace cannot meet the requirement of providing necessary lateral rigidity for the structure when the structure encounters more than estimated earthquake;
(3) the existing buckling restrained brace can not meet the requirements of multi-stage energy consumption and large-tonnage bearing energy consumption at the same time.
Therefore, the buckling restrained brace provided by the invention can play the energy consumption performance of the full anti-seismic stage of the structure, and can still provide necessary lateral stiffness for the structure when the structure encounters an earthquake exceeding the estimated prevention, so that the safety of the structure is ensured, and the application range is wider.
The following describes the implementation of the present invention in detail with reference to preferred embodiments.
As shown in fig. 1, fig. 1 is an exploded schematic view of the whole device, showing a tandem bushing type dual yield point buckling restrained brace according to an implementation manner of the present invention, and the whole device can be provided with the following components: the concrete core area 1, the first-stage energy-consumption soft steel pipe 2, the second-stage energy-consumption soft steel pipe 3, the constraint steel pipe 4, the unbonded sliding material 5, the first limit pin 6-1, the second limit pin 6-2, the connecting piece 7 and the like are described, and the above components are only a preferable combination structure for realizing the invention, and do not mean that the whole device is required to use all the above components, and the necessary structure, functions and realization modes of the whole device are exemplarily described in detail below.
It is easy to understand that "in series" mainly means that the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3 are in series relation. "buckling", sometimes also referred to as yielding, reaches a critical state of stress or deformation at the limit. "support" is a generic term for a type of structure or member, and is not limited to a specific form or function of the structure, and may be a tension member, a compression member, etc., or a combination thereof according to a use scenario.
The core assembly is explained in detail below with reference to the drawings.
As shown in fig. 2, in the invention, the concrete core area 1 serves as a buckling restrained core unit of the whole buckling restrained brace, bears the strength of the conventional brace, and provides radial restraint for the first-stage energy-consuming soft steel pipe 2 and the second-stage energy-consuming soft steel pipe 3 at the back to limit the radial inward instability of the soft steel.
Inside concreting of first order power consumption soft steel pipe 2 and the soft steel pipe of second grade power consumption 3 forms concrete core area 1, and first order power consumption soft steel pipe 2, the soft steel pipe of second grade power consumption 3 can provide the restraint effect to a certain extent for core area concrete, improve the support intensity of concrete.
In the invention, as shown in fig. 1 and 3, a first-stage energy-consumption soft steel pipe 2 and a second-stage energy-consumption soft steel pipe 3 are connected in series at one end through a connecting piece 7, and it can be seen from the figure that one end at the position is the inner end of the first-stage energy-consumption soft steel pipe 2 and the inner end of the second-stage energy-consumption soft steel pipe 3, and the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3 realize yield energy consumption at different yield stages and double yield point buckling energy consumption by virtue of different yield strengths of the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3, and the specific implementation mode will be explained in detail later.
The constraint steel pipe 4 is sleeved outside the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3, when the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 are subjected to buckling energy consumption, the constraint steel pipe 4 provides radial constraint for the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 to prevent instability, and meanwhile, the constraint steel pipe 4 can also provide necessary lateral stiffness for the structure.
In the invention, the restraint steel pipe 4 can be a common steel pipe, the wall thickness has no special requirement, and the requirement of no yield under the condition of large shock in practical application can be met.
As shown in fig. 4-9, the other end of the first-stage energy-consumption soft steel pipe 2 is provided with a first limit pin 6-1, and the other end of the second-stage energy-consumption soft steel pipe 3 is provided with a second limit pin 6-2; the pipe walls at the two ends of the constraint steel pipe 4 are provided with a first limiting hole 4-1 and a second limiting hole 4-2 corresponding to the first limiting pin 6-1 and the second limiting pin 6-2; and the first limit pin 6-1 and the second limit pin 6-2 are respectively embedded into the first limit hole 4-1 and the second limit hole 4-2, the cross section size of the first limit pin 6-1 is smaller than that of the first limit hole 4-1, a first gap is formed between two sides of the first limit pin 6-1 and the edge of the first limit hole 4-1 in the axial direction, and the first gap is defined as delta1The cross-sectional dimension of the second limit pin 6-2 is smaller than that of the second limit hole 4-2, a second gap is formed between the two sides of the second limit pin 6-2 and the edge of the second limit hole 4-2 in the axial direction, and the second gap is defined as delta2And δ1＜δ2The first gap is delta1A second clearance delta from2The function of which will be described in detail later.
The invention can use the first limit pin 6-1 and the second limit pin 6-2 with the same cross section size, and the requirement of delta is met1＜δ2In the case of (1), the size of the first stopper hole 4-1 is smaller than that of the second stopper hole 4-2.
In the present invention, the use of "soft steel pipe" is not the only option, and ordinary steel materials such as Q235 can be used, and in practical applications, soft steel pipe is preferred in at least the first yield section because of its superior hysteresis energy dissipation curve.
In addition, the "soft steel pipe" may be made of carbon steel having a carbon content of less than 0.25%, and has low strength and low hardness.
It should be understood that the primary and secondary energy dissipating soft steel pipes 2 and 3 each play the same important role in the whole restraining support according to the earthquake intensity and the yield stage, and the primary and secondary energy dissipating soft steel pipes are only in a hierarchical relationship here and are not limited to the level, primary and secondary or importance.
In some embodiments, referring to fig. 1 and 3 again, a section of reinforcing steel bar 7-1 is welded to the other end of each of the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3, the reinforcing steel bar 7-1 is welded to the end face of the soft steel pipe, and is sleeved in the restraint steel pipe 4 together with the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3, and the first limiting pin 6-1 and the second limiting pin 6-2 are both installed on the reinforcing steel bar 7-1. The invention preferably adopts a solid steel bar structure, and is welded with the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3, the limiting pin is arranged on the solid steel bar structure, compared with the method that the limiting pin is directly arranged on the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3, the soft steel pipe is soft steel, the pipe wall strength is lower, the local damage to the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3 caused by the arrangement of the limiting pin is avoided, the connection strength of the limiting pin is difficult to ensure, and the problem is well solved by the reinforcing steel bar 7-1.
In the invention, the length of the reinforced steel bar 7-1 is not limited, as long as the first limiting pin 6-1 and the second limiting pin 6-2 are installed enough, and the size of the cross section of the reinforced steel bar 7-1 is not limited, but the reinforced steel bar is preferably designed to be the same as the sizes of the cross sections of the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3, so that the welding construction is convenient, and the reinforced steel bar 7-1 can just block the end faces of the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3 after being welded, so that the concrete is sealed in the soft steel pipes, and the corrosion resistance of the concrete in a core area is improved.
In the invention, the reinforcing steel bar 7-1 is provided with an insertion hole, and the first limiting pin 6-1 and the second limiting pin 6-2 are inserted into the insertion hole and connected with the reinforcing steel bar 7-1. The specific form of the jack is not limited, and the jack can be arranged according to the section form of the reinforced steel bar 7-1 as long as the jack can be matched with the limiting pin, so that the limiting pin can be conveniently inserted and kept in the jack.
In some embodiments, the insertion hole of the reinforcing steel bar 7-1 is a through hole, and the first and second limiting pins 6-1 and 6-2 are integrated and pass through the through hole to be respectively embedded into the first and second limiting holes 4-1 and 4-2 of the restraining steel tube 4.
Certainly, two non-through holes can be symmetrically formed in the reinforcing steel bar 7-1, two first limiting pins 6-1 and two second limiting pins 6-2 are respectively arranged, namely, the two limiting pins are of two split structures, and the limiting pins of the two split structures are respectively inserted into the two non-through holes from two sides and are embedded into the first limiting hole 4-1 and the second limiting hole 4-2 of the constraint steel pipe 4.
In addition, the size of the through hole or the non-through hole is slightly smaller than that of the limit pin, or the inner wall of the hole is provided with a structure such as a bulge, a convex strip, a convex rib and the like, or the limit pin and the jack are designed to be in threaded connection, so that the limit pin can be firmly held after being wedged, and is prevented from slipping out of the hole.
It is easy to understand that the above connection modes of the first and second limiting pins 6-1 and 6-2 and the reinforcing steel bar 7-1 are all possible, and the connection strength and reliability can be ensured, but the connection modes are not only limited to the present invention, and other connection modes reasonably foreseen by a person skilled in the art should not be understood as departing from the spirit of the present invention.
In some embodiments, as shown in fig. 1 and 3, the connecting member 7 is provided with a third limiting pin 6-3, a third limiting hole 4-3 is formed in the pipe wall of the middle part of the constraint steel pipe 4 corresponding to the third limiting pin 6-3, and the third limiting pin 6-3 is embedded into the third limiting hole 4-3, so that after the first-stage yielding, the constraint steel pipe 4 and the first-stage energy consumption soft steel pipe 2 can drive the second-stage energy consumption soft steel pipe 3 to move axially through the connecting member 7, the bearing stress of the first-stage energy consumption soft steel pipe 2 is shared well, and the first-stage energy consumption soft steel pipe 2 is prevented from being damaged by independent stress.
With continued reference to fig. 8 and 9, preferably, the third limiting hole 4-3 is designed to have the same size as the cross-sectional size of the third limiting pin 6-3, so that the third limiting pin 6-3 is tightly embedded into the third limiting hole 4-3, i.e., the third limiting pin 6-3 can be tightly contacted with the constraint steel tube 4, and thus, the constraint steel tube 4 can synchronously drive the second-stage energy consumption soft steel tube 3 to axially move through the connecting piece 7 and the first-stage energy consumption soft steel tube 2, and the bearing stress of the first-stage energy consumption soft steel tube 2 is timely shared.
In addition, similar to the reinforced steel bar 7-1, the connecting piece 7 is a connecting steel bar, the connecting steel bar is also provided with jacks for mounting the third limiting pins 6-3, and the mounting mode of the jacks is the same as that of the first limiting pin 6-1 and the second limiting pin 6-2 which are inserted into the reinforced steel bar 7-1.
Referring to fig. 10-13, in another implementation manner of the present invention, a connection sleeve 9 is additionally disposed at two ends outside the constraint steel tube 4, a fourth limiting hole 9-1 is disposed on a tube wall of the connection sleeve 9, and the first limiting pin 6-1 and the second limiting pin 6-2 are further embedded into the fourth limiting hole 9-1. The stress is transmitted to the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3 by the aid of the connecting sleeve 9, the first limiting pin 6-1, the second limiting pin 6-2 and the reinforcing steel bar 7-1, stable force transmission and buckling energy consumption can be realized, meanwhile, the connecting sleeve 9 is wrapped outside one section, the end strength of the whole support is enhanced to a certain extent, and the large-tonnage energy-consumption bearing requirement is met.
Preferably, the size of the fourth limiting hole 9-1 is the same as the cross-sectional sizes of the first limiting pin 6-1 and the second limiting pin 6-2, so that the first limiting pin 6-1 and the second limiting pin 6-2 are tightly embedded into the fourth limiting hole 9-1, and the first limiting pin 6-1 and the second limiting pin 6-2 are tightly contacted with the connecting sleeve 9, so that when the connecting sleeve 9 is stressed, the force can be timely and directly transmitted to the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 through the first limiting pin 6-1, the second limiting pin 6-2 and the reinforcing steel bar 7-1.
It should be understood that the length of the connection sleeve 9 is not limited, and it is sufficient to open the fourth position-limiting hole 9-1, and the present invention preferably extends to the same length on both sides of the first position-limiting hole 4-1 and the second position-limiting hole 4-2.
In addition, the end of the connecting sleeve 9 is welded with a sealing plate 8, and the sealing plate 8 is welded with an end connecting piece 10. The closing plate 8 is only welded with the end part of the connecting sleeve 9 and is not connected with the first-stage energy-consumption soft steel pipe 2, the second-stage energy-consumption soft steel pipe 3 and the restraint steel pipe 4. The size of the closing plate 8 is the same as or slightly larger than the section of the connecting sleeve 9, the closing plate 8 is used for plugging the outer end face of the connecting sleeve 9, so that the end connecting piece 10 can be conveniently connected to the connecting sleeve 9, meanwhile, the closing plate 8 plugs the connecting sleeve 9 and each internal component, and the corrosion resistance of each component is enhanced.
It should be appreciated that the end connector 10 is intended to be connected to a host structure or structural member to which the entire buckling restrained brace is attached. The end connecting piece 10 of the invention adopts a cross connecting component formed by welding steel plates, the steel plates are provided with bolt holes and are connected and fixed with a main body structure or a structural component through bolts.
Referring to fig. 1, 2 and 10, as a preferred embodiment, the present invention further provides an unbonded sliding layer 5 between the concrete core region 1 and the first-stage energy-consuming soft steel pipe 2 and the second-stage energy-consuming soft steel pipe 3, or between the first-stage energy-consuming soft steel pipe 2 and the second-stage energy-consuming soft steel pipe 3 and the constraining steel pipe 4, wherein the unbonded sliding layer 5 is formed by an unbonded sliding material in a gap between the concrete core region 1 and the first-stage energy-consuming soft steel pipe 2 and the second-stage energy-consuming soft steel pipe 3, and particularly, the energy-consuming members can be coated with common materials such as teflon when being processed in a factory. The unbonded sliding material provides a sliding interface between two structural interfaces, so that friction is reduced, the buckling restrained brace has similar mechanical properties as much as possible when being pulled and pressed, and the increase of axial force caused by friction between the energy consumption unit and the restrained unit after being pressed and expanded is avoided.
As a better implementation mode, as shown in fig. 3 and 11, the sum of the lengths of the reinforcing steel bar 7-1, the first-stage energy-consuming soft steel pipe 2, the connecting piece 7, the second-stage energy-consuming soft steel pipe 3 and the reinforcing steel bar 7-1 is exactly equal to the length of the restraining steel pipe 4, so that the end faces of the components are kept flush after being assembled, the structural arrangement is more reasonable, and the construction operation is more convenient.
In some embodiments, as shown in fig. 4, 6 and 8, two first limiting holes 4-1, two second limiting holes 4-2 and two third limiting holes 4-3 are symmetrically formed in the tube wall of the constraint steel tube 4, or four limiting holes are formed in the tube section in a manner of uniformly distributing the upper part, the lower part, the left part and the right part according to circumstances, and the symmetric arrangement of the limiting holes can ensure more reasonable sliding energy consumption and more uniform stress on the tube wall section.
In the invention, the cross section forms of the first-stage energy consumption soft steel pipe 2, the second-stage energy consumption soft steel pipe 3 and the constraint steel pipe 4 are not limited, the common steel pipe sections of the constraint support in the building can be used, and the invention preferably adopts rectangular or square section steel pipes as shown in figures 1 and 10, and can also be round section steel pipes as shown in figure 14.
Correspondingly, the forms of the first limiting hole 4-1, the second limiting hole 4-2 and the third limiting hole 4-3 can be flexibly adjusted, the invention takes a rectangular hole as an example, namely, the long side is a rectangle along the axial direction of the tube, and the short side is a short side along the radial direction of the tube, but obviously, other forms of holes do not depart from the gist of the invention, such as a square hole, a circular hole, an elliptical hole, a cross-shaped hole and the like.
The assembly process of the series sleeve type double-yield-point buckling restrained brace (taking fig. 1 as an example) comprises the following steps:
firstly, welding a first-stage energy consumption soft steel pipe 2 and a second-stage energy consumption soft steel pipe 3 (an unbonded sliding material is coated inside to form an unbonded sliding layer 5) from the middle through a connecting piece 7;
secondly, pouring a concrete core area 1;
thirdly, welding a reinforcing steel bar 7-1 with the left end of the first-stage energy consumption soft steel pipe 2 and the right end of the second-stage energy consumption soft steel pipe 3;
fourthly, brushing an unbonded sliding material outside the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 to form an unbonded sliding layer 5;
fifthly, sleeving a restraint steel pipe 4 outside the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3;
sixthly, if the connecting sleeve 9 is adopted, the left and right sealing plates 8 and the connecting sleeve 9 are welded, and are sleeved outside the left and right sides of the constraint steel pipe 4;
a seventh part, inserting a first limit pin 6-1 and a second limit pin 6-2 into the first limit hole 4-1 and the second limit hole 4-2 of the constraint steel pipe 4 at the left and right sides, and inserting a third limit pin 6-3 into the third limit hole 4-3;
and eighthly, welding the end connecting piece 10 with the reinforced steel bar 7-1 or the closing plate 8.
The mechanism for realizing the buckling energy consumption of the double yield points by connecting the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 in series is as follows:
assuming first-level energy consumption soft steel elastic modulusE 1Cross sectional areaA 1Calculating the lengthl 1Second-order energy consumption soft steel elastic modulusE 2Cross sectional areaA 2Calculating the lengthl 2Yield point of mild steelf yUltimate yield strength of mild steelf su；
The device working process is as follows:
in the first stage, the first-stage energy-consumption soft steel pipe 2 begins to yield
Onset of yield deformation
；
In the second stage, the first-stage energy-consumption soft steel pipe 2 is deformed
When the first-stage energy consumption soft steel pipe 2 is subjected to yield energy consumption;
in the third stage, the displacement deformation value of the first-stage energy-consumption mild steel pipe 2 is used
When the first-level energy-consumption soft steel pipe 2 does not reach the limit deformation, the supporting internal force is
，
Designing a yield point for the first-stage energy-consumption soft steel pipe 2; when the supporting axial force continues to increase, the restraint steel pipe 4 limits the axial deformation of the first-stage energy-consumption soft steel pipe 2, and at the moment, the restraint steel pipe 4 and the first-stage energy-consumption soft steel pipe 2 jointly transfer force, namely
(ii) a At this time, the first stageThe energy-consuming soft steel pipe 2 and the constraint steel pipe 4 pull the secondary energy-consuming soft steel pipe 3 to work through the third limiting pin 6-3 (the axial deformation of the constraint steel pipe 4 is ignored at this stage).
The fourth stage, when the axial deformation value of the first-stage energy consumption soft steel pipe 2
Then, when the axial force continues to increase, the restraining steel pipe 4 and the first-stage energy-consumption soft steel pipe 2 transmit force together, and when the two combine to form a force
When the secondary energy consumption soft steel pipe 3 begins to yield, the secondary energy consumption soft steel pipe 3 is axially deformed into
；
In the fifth stage, the second-stage energy-consumption soft steel pipe 3 is displaced and deformed
When the secondary energy consumption soft steel pipe 3 generates yield energy consumption;
in the sixth stage, when the displacement deformation value of the two-stage energy consumption soft steel pipe 3 is obtained
When the secondary energy consumption soft steel pipe 3 does not reach the limit deformation, the supporting internal force is
，
Designing a yield point for the secondary energy consumption soft steel pipe 3; when the supporting axial force continues to increase, the restraining steel pipe 4 limits the axial deformation of the secondary energy consumption soft steel pipe 3, at the moment, the primary energy consumption soft steel pipe 2 and the secondary energy consumption soft steel pipe 3 are deformed greatly but do not reach the limit deformation value, and the restraining steel pipe 4, the primary energy consumption soft steel pipe 2 and the secondary energy consumption soft steel pipe 3 transmit force together (the axial deformation of the restraining steel pipe 4 is neglected at the stage).
According to the invention, through two-stage yield points of the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3, the first stage yields firstly, and the second stage yields later, so that buckling energy consumption with double yield points is realized; the steel materials of the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 are preferably the same, the wall thickness of the first-stage energy consumption soft steel pipe is smaller than that of the second-stage energy consumption soft steel pipe, and the length of the first-stage energy consumption soft steel pipe is larger than that of the second-stage energy consumption soft steel pipe, so that the requirements are metE 1=E 2、A 1<A 2、L 1＞L 2And the buckling energy consumption of the series double yield points is realized.
The end part of the series sleeve type double-yield-point buckling restrained brace is connected with an end part connecting piece 10 in a welding mode, or the end part connecting piece 8 is connected with a sealing plate 8 in a welding mode through a connecting sleeve 9, the sealing plate 8 is connected with the end part connecting piece 10 in a welding mode, and the connecting sleeve 9 pulls a first-stage energy-consumption soft steel pipe 2 and a second-stage energy-consumption soft steel pipe 3 to axially reciprocate under the combined action of a limiting pin and a reinforcing steel bar 7-1. The method comprises the following three working stages:
(1) a first yielding phase: the maximum deformation value of buckling restrained energy consumption designed by the device at the stage is less than or equal to delta1. The restraint steel pipe 4 provides lateral restraint for the first-stage energy consumption soft steel pipe 2 at the stage, the first-stage energy consumption soft steel pipe 2 is prevented from being subjected to out-of-plane instability, and meanwhile, the concrete core area 1 provides radial restraint for the first-stage energy consumption soft steel pipe 2 and limits the soft steel from being subjected to radial inward instability. Meanwhile, the device enables the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3 to be connected in series through the connecting piece 7, and the effect of transmitting axial force is achieved. At this stage, the second-stage energy-consumption soft steel pipe 3 does not yield, and the first-stage energy-consumption soft steel pipe 2 generates in-plane buckling energy consumption. At present, the method is mainly applied to providing energy dissipation and shock absorption guarantee for the structure when the structure encounters small shock action.
(2) The second yield stage, the maximum deformation value of the buckling restrained energy consumption of the device design in the stage is larger than delta1Is less than or equal to delta2. The restraint steel pipe 4 and the first-stage energy consumption soft steel pipe 2 pull the second-stage energy consumption soft steel pipe 3 to perform axial reciprocating motion through the connecting piece 7 at the present stage, the restraint steel pipe 4 provides radial restraint for the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 at the same time, the out-of-plane buckling instability of the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe is prevented, and at the moment, the first-stage energy consumption soft steel pipe 2 performs axial reciprocating motionThe soft steel pipe 2 is subjected to buckling energy consumption in the previous stage, and is buckled with the second-stage energy consumption soft steel pipe 3 at the same time. At the present stage, the energy dissipation and shock absorption device is mainly applied to providing energy dissipation and shock absorption guarantee for a structure when the structure encounters the action of medium and large earthquakes.
(3) In the third stage, after the device finishes the energy dissipation and shock absorption work of the upper two stages, when the displacement is continuously increased to be larger than delta2In the process, the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 are deformed greatly but do not reach the limit deformation value, and the device transmits force together through the constraint steel pipe 4, the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3, so that necessary lateral stiffness is provided for the structure. Therefore, the unfavorable condition that the lateral stiffness of the building is suddenly reduced instantly due to the fact that the energy consumption component is withdrawn from working under the action of the structure exceeding the estimated rare earthquake is avoided.
The invention can solve the problems in the prior art and realize that:
(1) aiming at the difficult problems that the traditional buckling restrained energy dissipation brace generally has only one yield point, does not yield under the action of small earthquake, only provides additional rigidity and does not participate in energy dissipation, a first-stage energy dissipation soft steel pipe 2 and a second-stage energy dissipation soft steel pipe 3 are introduced, and the maximum deformation value delta of the first-stage buckling restrained energy dissipation is controlled1And the maximum deformation value delta of the two-stage buckling constraint energy consumption2The two-stage working mode of double yield point design is realized, and the problem can be successfully solved;
(2) aiming at the problems that the existing buckling restrained energy dissipation brace mainly depends on core units to perform structural earthquake resistance and energy dissipation, when the structure encounters an earthquake exceeding the estimated earthquake, the core units are destroyed by energy dissipation, the brace is completely withdrawn from working, so that the lateral stiffness of the building is instantly suddenly reduced, and the building is very easy to collapse and destroy, the restrained steel tube 4 is introduced, and when the energy dissipation soft steel tube of the brace reaches the deformation value delta2Then, the device continues to provide necessary lateral stiffness for the structure through the constraint steel pipe 4, and the structure is prevented from being seriously damaged under the action of an estimated rare earthquake;
(3) the combined action of the concrete core area 1 and the restraint steel pipe 4 is utilized to achieve that the primary energy consumption soft steel pipe 2 and the secondary energy consumption soft steel pipe 3 do not generate out-of-plane integral buckling instability in the whole energy consumption process;
(4) the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3 are filled with the concrete core area 1 and act together with the connecting sleeve 9 and the constraint steel pipe 4, so that the bearing energy consumption strength of the whole constraint support is greatly improved, the device is particularly suitable for large-tonnage bearing requirements, and the defect of low bearing strength of the existing device structure is overcome.
It will be readily appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A series sleeve type double-yield-point buckling restrained brace is characterized by comprising:
the concrete core area is used as a buckling restrained brace buckling-restrained core unit;
the primary energy consumption soft steel pipe and the secondary energy consumption soft steel pipe are connected in series through a connecting piece, concrete is poured inside to form a concrete core area, a first limiting pin is installed at the other end of the primary energy consumption soft steel pipe, and a second limiting pin is installed at the other end of the secondary energy consumption soft steel pipe;
the restraint steel pipe is sleeved outside the first-stage energy consumption soft steel pipe and the second-stage energy consumption soft steel pipe, and the pipe walls at two ends of the restraint steel pipe are provided with a first limiting hole and a second limiting hole corresponding to the first limiting pin and the second limiting pin;
the first limiting pin and the second limiting pin are respectively embedded into the first limiting hole and the second limiting hole, the cross-sectional dimension of the first limiting pin is smaller than that of the first limiting hole, and a first gap delta is formed between two sides of the first limiting pin and the first limiting hole in the axial direction1The cross-sectional dimension of the second limit pin is smaller than that of the second limit hole, and a second gap delta is formed between two sides of the second limit pin and the second limit hole in the axial direction2And δ1＜δ2。
2. The tandem bushing type dual yield point buckling restrained brace of claim 1, wherein:
the other ends of the first-stage energy-consumption soft steel pipe and the second-stage energy-consumption soft steel pipe are welded with one section of reinforcing steel bar, the first-stage energy-consumption soft steel pipe and the second-stage energy-consumption soft steel pipe are sleeved in the restraint steel pipe, and the first limiting pin and the second limiting pin are installed on the reinforcing steel bar.
3. The tandem bushing type dual yield point buckling restrained brace of claim 2, wherein:
the reinforcing steel bar and the connecting steel bar are provided with a through hole, and the first limiting pin and the second limiting pin are integrated, penetrate through the through hole and are embedded into the first limiting hole and the second limiting hole at two ends of the restraining steel pipe; alternatively, the first and second electrodes may be,
two non-through holes are symmetrically formed in the reinforcing steel bar and the connecting steel bar, the number of the first limiting pins and the number of the second limiting pins are two, the two limiting pins are respectively inserted into the two non-through holes and are embedded into the first limiting holes and the second limiting holes at two ends of the constraint steel pipe.
4. The tandem bushing type dual yield point buckling restrained brace of claim 1, wherein:
the connecting piece is provided with a third limiting pin, the wall of the restraint steel pipe is provided with a third limiting hole corresponding to the third limiting pin, the third limiting pin is embedded into the third limiting hole, and the size of the third limiting hole is the same as the cross section size of the third limiting pin, so that the third limiting pin is tightly embedded into the third limiting hole.
5. The tandem bushing type dual yield point buckling restrained brace of claim 1, wherein:
the concrete core area is arranged between the first-stage energy consumption soft steel pipe and the second-stage energy consumption soft steel pipe, and/or between the first-stage energy consumption soft steel pipe and the second-stage energy consumption soft steel pipe and the constraint steel pipe.
6. The tandem bushing type dual yield point buckling restrained brace of claim 1, wherein:
the restraint steel pipe is characterized by further comprising a connecting sleeve, the two ends of the restraint steel pipe are sleeved with the connecting sleeve, a fourth limiting hole is formed in the pipe wall of the connecting sleeve, and the first limiting pin and the second limiting pin are further embedded into the fourth limiting hole.
7. The tandem bushing type dual yield point buckling restrained brace of claim 6, wherein:
the size of the fourth limiting hole is the same as the cross-sectional sizes of the first limiting pin and the second limiting pin, so that the first limiting pin and the second limiting pin are tightly embedded into the fourth limiting hole.
8. The tandem bushing type dual yield point buckling restrained brace according to claim 6, further comprising:
and a sealing plate is welded at the end part of the connecting sleeve and is connected with an end part connecting piece in a welding way.
9. The tandem bushing type double-yield-point buckling restrained brace according to any one of claims 1 to 8, wherein:
the steel material of the first-stage energy consumption soft steel pipe is the same as that of the second-stage energy consumption soft steel pipe, the wall thickness of the first-stage energy consumption soft steel pipe is smaller than that of the second-stage energy consumption soft steel pipe, and the length of the first-stage energy consumption soft steel pipe is larger than that of the second-stage energy consumption soft steel pipe.
10. The tandem bushing type double-yield-point buckling restrained brace according to any one of claims 1 to 8, wherein:
the cross sections of the first-stage energy-consumption soft steel pipe, the second-stage energy-consumption soft steel pipe and the constraint steel pipe are rectangular, square or circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111575078.2A CN113958000B (en) | 2021-12-22 | 2021-12-22 | Series sleeve type double-yield-point buckling restrained brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111575078.2A CN113958000B (en) | 2021-12-22 | 2021-12-22 | Series sleeve type double-yield-point buckling restrained brace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113958000A CN113958000A (en) | 2022-01-21 |
| CN113958000B true CN113958000B (en) | 2022-03-04 |
Family
ID=79473541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111575078.2A Active CN113958000B (en) | 2021-12-22 | 2021-12-22 | Series sleeve type double-yield-point buckling restrained brace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113958000B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016071879A1 (en) * | 2014-11-07 | 2016-05-12 | University Of Ottawa | Seismic retrofitting buckling restrained brace |
| CN113338469A (en) * | 2021-08-06 | 2021-09-03 | 湖南大学 | Assembled composite graded energy dissipation buckling restrained brace component |
| CN113374108A (en) * | 2021-07-07 | 2021-09-10 | 北京市建筑设计研究院有限公司 | Metal composite energy dissipater with double-order yield point for seismic isolation layer |
| CN113958001A (en) * | 2021-12-22 | 2022-01-21 | 北京市建筑设计研究院有限公司 | Parallel multiple sleeve type double-yield-point buckling restrained brace |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201002917A (en) * | 2008-07-09 | 2010-01-16 | Nat Applied Res Laboratoires | A groove joint type buckling constraint supporting device |
| CN103015552B (en) * | 2011-09-22 | 2014-11-05 | 同济大学 | Shock and breakage preventive deformation recording type buckling restrained brace and manufacturing method thereof |
| CN102400500B (en) * | 2011-11-25 | 2014-07-09 | 东南大学 | Buckling restrained brace with tension interval protection member |
| CN102493570B (en) * | 2011-12-19 | 2013-09-11 | 苗启松 | Multi-stage series anti-buckling support and manufacturing method |
| CN103088935A (en) * | 2013-02-17 | 2013-05-08 | 王兆荣 | Neck reinforced buckling-restrained brace filled by concrete |
| CN104453001A (en) * | 2014-10-24 | 2015-03-25 | 大连理工大学 | Composite damper formed by parallel connection of viscoelastic damper and buckling-restrained brace |
| CN205206078U (en) * | 2015-12-22 | 2016-05-04 | 山东大学 | Cross arrangement buckling restrained brace and building that has this support |
| CN105839968B (en) * | 2016-05-19 | 2019-03-15 | 华南理工大学 | A kind of connecting node plate with sliding end plate for anti-buckling support |
| CN207176974U (en) * | 2017-09-26 | 2018-04-03 | 唐山市规划建筑设计研究院 | Curvature-prevention support component |
| CN107761982A (en) * | 2017-10-22 | 2018-03-06 | 潍坊科技学院 | A kind of construction method of the external series connection buckling-resistant support structure of assembled |
| CN207553342U (en) * | 2017-10-30 | 2018-06-29 | 南京百西思建筑科技有限公司 | A kind of anti-buckling constraint support |
| CN108999307B (en) * | 2018-09-29 | 2020-06-19 | 上海应用技术大学 | Multistage energy consumption shock attenuation component of adjustable rigidity |
| CN113293878A (en) * | 2021-05-28 | 2021-08-24 | 北京市建筑设计研究院有限公司 | Double-yield-point steel bar buckling restrained brace with limiting function |
| CN113417502B (en) * | 2021-07-28 | 2023-02-28 | 北京市建筑设计研究院有限公司 | Double-yield-point buckling restrained brace |
| CN113718952A (en) * | 2021-09-03 | 2021-11-30 | 西安建筑科技大学 | Series-type self-resetting double-yield-point buckling restrained brace |
-
2021
- 2021-12-22 CN CN202111575078.2A patent/CN113958000B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016071879A1 (en) * | 2014-11-07 | 2016-05-12 | University Of Ottawa | Seismic retrofitting buckling restrained brace |
| CN113374108A (en) * | 2021-07-07 | 2021-09-10 | 北京市建筑设计研究院有限公司 | Metal composite energy dissipater with double-order yield point for seismic isolation layer |
| CN113338469A (en) * | 2021-08-06 | 2021-09-03 | 湖南大学 | Assembled composite graded energy dissipation buckling restrained brace component |
| CN113958001A (en) * | 2021-12-22 | 2022-01-21 | 北京市建筑设计研究院有限公司 | Parallel multiple sleeve type double-yield-point buckling restrained brace |
Non-Patent Citations (1)
| Title |
|---|
| 双钢管耗能支撑理论计算与滞回曲线分析;周鹏等;《特种结构》;20180815(第04期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113958000A (en) | 2022-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113958001B (en) | Parallel multiple sleeve type double-yield-point buckling restrained brace | |
| CN107675800B (en) | Self-resetting deformation coordination floor slab node structure | |
| CN105155710B (en) | A kind of Self-resetting mild steel energy dissipation support | |
| CN104005490B (en) | Anti-buckling limit support member for reinforcing post-yield stiffness | |
| CN113417502B (en) | Double-yield-point buckling restrained brace | |
| WO2023137929A1 (en) | Anti-seismic component with dual functions of energy consumption and load bearing, and buffer | |
| CN113958000B (en) | Series sleeve type double-yield-point buckling restrained brace | |
| JP2000213200A (en) | Damping construction | |
| CN111962704A (en) | Multi-order self-resetting buckling-restrained brace and energy dissipation method and application thereof | |
| CN113293878A (en) | Double-yield-point steel bar buckling restrained brace with limiting function | |
| WO2016169124A1 (en) | Damping steel bar connector | |
| CN216616349U (en) | Parallel triple-sleeve type double-yield-point buckling restrained brace | |
| CN210712520U (en) | Assembled buckling-restrained brace device for improving anti-seismic performance of bridge | |
| CN109629896B (en) | Combined type double-yield buckling restrained energy-dissipation brace | |
| JP2009121190A (en) | Steel material | |
| CN208474278U (en) | A kind of anchor | |
| CN216973812U (en) | Take limit function's two yield point rod iron bucking restraint to support | |
| CN211172484U (en) | Multistage yield stress-resistant stable-load support | |
| JP2003090144A (en) | Damping device, damping structure, and damping structural body | |
| CN213014779U (en) | Metal and composite material laminated damper | |
| CN214738938U (en) | Viscoelastic-metal multi-stage energy dissipation steel support | |
| CN208456245U (en) | A kind of assembly conversion type buckling-restrained energy-dissipation with anti-skid structure | |
| CN109653389B (en) | Multistage control buckling damping energy dissipation supporting component | |
| CN111827760A (en) | Self-resetting wide-frequency-domain hybrid energy consumption damper | |
| CN109914636A (en) | A kind of diagonal ribbed stiffener damper energy consumption steel plate shear wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |