CN113958001A - Parallel multiple sleeve type double-yield-point buckling restrained brace - Google Patents
Parallel multiple sleeve type double-yield-point buckling restrained brace Download PDFInfo
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- CN113958001A CN113958001A CN202111575110.7A CN202111575110A CN113958001A CN 113958001 A CN113958001 A CN 113958001A CN 202111575110 A CN202111575110 A CN 202111575110A CN 113958001 A CN113958001 A CN 113958001A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention discloses a parallel multiple sleeve type double-yield-point buckling restrained brace, which comprises: the concrete core area is used as a buckling restrained brace buckling-restrained core unit; the energy-consumption soft steel pipe comprises a first-stage energy-consumption soft steel pipe, wherein at least one end of the first-stage energy-consumption soft steel pipe is provided with a limiting pin, and concrete is poured inside the first-stage energy-consumption soft steel pipe to form a concrete core area; at least one end of the secondary energy consumption soft steel pipe is provided with a first limiting hole on the pipe wall; the restraint steel pipe is provided with a second limiting hole at least one end on the pipe wall; the connecting sleeve is sleeved at least one end outside the restraint steel pipe, and a third limiting hole is formed in the pipe wall of the connecting sleeve; the limiting pin is embedded into the first limiting hole, the second limiting hole and the third limiting hole at the same time, the cross-sectional size of the limiting pin is smaller than that of the first limiting hole, and the size of the first limiting hole is smaller than that of the second limiting hole. 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 parallel multiple sleeve type double-yield-point buckling restrained brace.
Background
The general buckling restrained brace provides lateral stiffness for a building structure under the normal use state and the small-earthquake action, and plays a role of a common brace; under the action of a large earthquake, the buckling restrained brace can dissipate the energy input by the earthquake through repeated pulling and pressing hysteresis. 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, researchers begin to research and develop a staged yielding buckling restrained brace, wherein 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. Similarly, the rigidity of the energy consumption section with a high yield point is much higher than that of the energy consumption section with a low yield point, so that the energy consumption of the energy consumption section with a low yield point is greatly influenced, and the staged yield cannot be well realized.
Some students adopt the combination of the core sections with the oblong holes with different lengths and the bolts to convert the support axial force into the shearing force of the bolts, so that the staged yielding of the buckling restrained brace parallel core sections is realized, but the limited shearing resistance bearing capacity of the bolts leads the buckling restrained brace with staged yielding to be only suitable for the condition of small tonnage, and the popularization and the application of the staged yielding buckling restrained brace are severely limited.
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 existing 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, and in particular, to a parallel multiple casing pipe 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:
the invention provides a parallel multi-sleeve type double-yield-point buckling restrained brace, which comprises:
the concrete core area is used as a buckling restrained brace buckling-restrained core unit;
the concrete core area is formed by pouring concrete inside the first-stage energy-consumption soft steel pipe, and at least one end of the first-stage energy-consumption soft steel pipe is provided with a limiting pin;
the second-stage energy-consumption soft steel pipe is sleeved outside the first-stage energy-consumption soft steel pipe, and the pipe wall of at least one end of the second-stage energy-consumption soft steel pipe is provided with a first limiting hole;
the constraint steel pipe is sleeved outside the secondary energy consumption soft steel pipe, and the pipe wall of at least one end of the constraint steel pipe is provided with a second limiting hole;
the connecting sleeve is sleeved at least one end outside the restraint steel pipe, and a third limiting hole is formed in the pipe wall of the connecting sleeve; and the number of the first and second electrodes,
the first limiting hole corresponds to the second limiting hole and the third limiting hole in position, the limiting pin is embedded into the first limiting hole, the second limiting hole and the third limiting hole simultaneously, the cross section size of the limiting pin is smaller than that of the first limiting hole, and the size of the first limiting hole is smaller than that of the second limiting hole.
In some embodiments, at least one end of the first-stage energy-consumption mild steel pipe is welded with a section of reinforcing steel bar, the reinforcing steel bar and the first-stage energy-consumption mild steel pipe are sleeved together in the second-stage energy-consumption mild steel pipe, and the limiting pin is installed on the reinforcing steel bar.
In some embodiments, the reinforcing steel bar is provided with a through hole, the limiting pin is a whole, penetrates through the through hole, and is embedded into two first limiting holes on the secondary energy consumption soft steel pipe and two second limiting holes on the constraint steel pipe; alternatively, the first and second electrodes may be,
two non-through holes are symmetrically formed in the reinforcing steel bar, two limiting pins are arranged, the two limiting pins are respectively inserted into the two non-through holes, and are embedded into the two first limiting holes in the secondary energy consumption soft steel pipe and the two second limiting holes in the constraint steel pipe.
In some embodiments, the length of the first-stage energy-consumption soft steel pipe is shorter than that of the second-stage energy-consumption soft steel pipe and the length of the constraint steel pipe are the same.
In some embodiments, the third limiting hole has the same size as the cross-sectional size of the limiting pin, so that the limiting pin is tightly inserted into the third limiting hole.
In some embodiments, the concrete core comprises a first energy dissipation soft steel pipe, a second energy dissipation soft steel pipe and a constraint steel pipe, wherein the first energy dissipation soft steel pipe is arranged between the concrete core and the first energy dissipation soft steel pipe, the second energy dissipation soft steel pipe is arranged between the second energy dissipation soft steel pipe and the constraint steel pipe, and/or the second energy dissipation soft steel pipe is arranged between the second energy dissipation soft steel pipe and the constraint steel pipe.
In some embodiments, the first limiting hole, the second limiting hole, the limiting pin and the connecting sleeve are only arranged at one end of the support, the connecting sleeve is connected with one end part connecting piece in a welding manner, and the first-stage energy-consumption soft steel pipe, the second-stage energy-consumption soft steel pipe and the constraint steel pipe are connected with the other end part connecting piece in a welding manner at the other end of the support; alternatively, the first and second electrodes may be,
the first limiting hole, the second limiting hole, the limiting pin and the connecting sleeve are arranged at two ends of the support, and the connecting sleeves at the two ends are respectively connected with one end part connecting piece in a welding mode.
In some embodiments, a sealing plate is welded at the end part of the connecting sleeve at one end of the support, another sealing plate is welded at the end part of the primary energy-consuming soft steel pipe, the secondary energy-consuming soft steel pipe and the restraining steel pipe at the other end of the support, and end connecting pieces at two ends are welded with the sealing plates.
In some embodiments, a sealing plate is welded to the end of the connecting sleeve at both ends of the support, and the end connectors at both ends are welded to the sealing plate.
In some embodiments, the cross sections of the primary energy consumption soft steel pipe, the secondary energy consumption soft steel pipe, the constraint steel pipe and the connecting sleeve 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) lead-in constraint steel pipeWhen the supporting energy consumption soft steel pipe reaches the 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 energy consumption soft steel pipe, so that the first-stage energy consumption soft steel pipe is not bent in the whole energy consumption process; meanwhile, the concrete core area adopts high-strength concrete or grouting material, necessary constraint conditions can be provided for large-tonnage bearing of the primary energy-consumption soft steel pipe, and the size and the cross section of the energy-consumption soft steel pipe also 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 FIG. 1;
FIG. 3 is a longitudinal cross-sectional view of the end node of FIG. 1, as exemplary;
FIG. 4 is a top plan view of the end node exemplarily shown in FIG. 1;
fig. 5-8 are general top view schematic diagrams of various exemplary embodiments 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 following describes the implementation of the present invention in detail with reference to preferred embodiments.
The general buckling restrained brace mainly comprises three parts, namely 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 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 existing BRB buckling restrained brace mainly has the following problems:
(1) the traditional buckling restrained brace generally has only one yield point, and the brace generally does not yield under the action of small shock and only provides lateral rigidity;
(2) the existing buckling restrained 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.
As shown in fig. 1, fig. 1 is an exploded schematic view of the whole device, which illustrates a parallel multiple bushing type dual yield point buckling restrained brace according to an implementation manner of the present invention, and the whole device may be provided with the following components: the concrete core area 1, the primary energy consumption soft steel pipe 2, the secondary energy consumption soft steel pipe 3, the constraint steel pipe 4, the unbonded sliding material 5, the limit pin 6, the reinforced steel bar 7, the closing plate 8, the connecting sleeve 9 and the end connecting piece 10 are only a preferable combination structure for realizing the invention, and do not mean that the whole device is required to use all the components, and the necessary structure, functions and realization modes of the whole device are exemplarily explained in detail below.
It is easy to understand that "parallel connection" mainly means that 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 in parallel connection. "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 compression effect, provides radial restraint for the later first-stage energy-consuming soft steel pipe 2, and prevents the inward local buckling instability of the first-stage energy-consuming soft steel pipe 2.
According to the invention, the primary energy-consumption soft steel pipe 2 is wrapped outside the concrete core area 1, namely the concrete is poured inside the primary energy-consumption soft steel pipe 2 to form the concrete core area 1, and the primary energy-consumption soft steel pipe 2 can provide a certain degree of constraint effect for the concrete in the core area, so that the support strength of the concrete is improved.
At least one end of the first-level energy-consumption soft steel pipe 2 is provided with a limiting pin 6, and the function of the limiting pin 6 will be explained in detail later.
The secondary energy consumption soft steel pipe 3 is sleeved outside the primary energy consumption soft steel pipe 2, and at least one end of the secondary energy consumption soft steel pipe 3 is provided with a first limiting hole 3-1 on the pipe wall; when the first-stage energy consumption soft steel pipe 2 is subjected to buckling energy consumption, the second-stage energy consumption soft steel pipe 3 provides lateral restraint for the first-stage energy consumption soft steel pipe 2, and the first-stage energy consumption soft steel pipe 2 is prevented from being subjected to out-of-plane instability.
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 "mild steel" may be 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.
The constraint steel pipe 4 is sleeved outside the secondary energy consumption soft steel pipe 3, and at least one end of the constraint steel pipe 4 is provided with a second limiting hole 4-1 on the pipe wall; when the second-stage energy consumption soft steel pipe 3 is subjected to buckling energy consumption, the constraint steel pipe 4 provides radial constraint for the second-stage energy consumption soft steel pipe 3, so that the second-stage energy consumption soft steel pipe 3 is prevented from being unstable, and meanwhile, the constraint steel pipe 4 can 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.
A section of connecting sleeve 9 is sleeved outside at least one end of a constraint steel pipe 4, and a third limiting hole 9-1 is correspondingly formed in the wall of the connecting sleeve 9. Referring to FIG. 3, the third position-limiting hole 9-1 is connected to the first position-limiting hole 3-1 and the second position-limiting hole 4-1Correspondingly, the limiting pin 6 is simultaneously embedded into the first limiting hole 3-1, the second limiting hole 4-1 and the third limiting hole 9-1. The size of the cross section of the limiting pin 6 is smaller than that of the first limiting hole 3-1, the size of the first limiting hole 3-1 is smaller than that of the second limiting hole 4-1, namely, a first gap is formed between the limiting pin 6 and the edge of the first limiting hole 3-1 in the axial direction, and the first gap is defined as delta1A second gap is formed between the limit pin 6 and the edge of the second limit hole 4-1 in the axial direction, and the second gap is defined as delta2The first gap is delta1A second clearance delta from2The function of which will be described in detail later.
It should be understood that the length of the connection sleeve 9 is not limited, and it is sufficient to open the third position-limiting hole 9-1, and the present invention preferably extends to the same length on both sides of the first position-limiting hole 3-1 and the second position-limiting hole 4-1.
In some embodiments, referring to fig. 1 and 3 again, a section of reinforcing steel bar 7 is welded to at least one end of the primary energy dissipating soft steel pipe 2, the reinforcing steel bar 7 and the primary energy dissipating soft steel pipe 2 are sleeved together in the secondary energy dissipating soft steel pipe 3, and the limit pin 6 is installed on the reinforcing steel bar 7. The invention preferably adopts a solid steel bar structure and is welded with the first-stage energy-consumption soft steel pipe 2, in particular to the end surface of the first-stage energy-consumption soft steel pipe 2, the limiting pin 6 is arranged on the end surface, compared with the situation that the limiting pin 6 is directly arranged on the first-stage energy-consumption soft steel pipe 2, the first-stage energy-consumption soft steel pipe 2 is soft steel, the pipe wall strength is lower, the local damage to the first-stage energy-consumption soft steel pipe 2 caused by the arrangement of the limiting pin 6 is avoided, the connection strength of the limiting pin 6 is difficult to ensure, and the problem is well solved by the reinforcing steel bar 7.
Preferably, the length of the reinforcing steel bar 7 is not limited, the limiting pin 6 is only required to be installed enough, and the size of the cross section of the reinforcing steel bar 7 is not limited, but the reinforcing steel bar is preferably designed to be the same as the size of the cross section of the first-stage energy-consumption soft steel pipe 2, so that welding construction is facilitated, and the reinforcing steel bar 7 can just block the end face of the first-stage energy-consumption soft steel pipe 2 after welding connection, so that concrete is sealed in the first-stage energy-consumption soft steel pipe 2, and the corrosion resistance of the concrete in a core area is improved.
In the invention, the reinforcing steel bar 7 is provided with an insertion hole, and the limiting pin 6 is inserted into the insertion hole and connected with the reinforcing steel bar 7. The specific form of the insertion hole is not limited, and the insertion hole can be arranged according to the section form of the reinforced steel bar 7 as long as the insertion hole can be matched with the limiting pin 6, so that the limiting pin 6 can be conveniently inserted and kept in the insertion hole.
In some embodiments, the insertion hole on the reinforcing steel bar 7 is a through hole, the limiting pin 6 is a whole body, penetrates through the through hole, and is embedded into the two first limiting holes 3-1 on the secondary energy consumption mild steel pipe 3 and the two second limiting holes 4-1 on the constraint steel pipe 4, so that the reinforcing steel bar 7 and the primary energy consumption mild steel pipe 2 are constrained in the first limiting holes 3-1 and the second limiting holes 4-1.
Certainly, two non-through holes can be symmetrically formed in the reinforcing steel bar 7, two limiting pins 6 are provided, the two limiting pins 6 are respectively inserted into the two non-through holes and embedded into the two first limiting holes 3-1 of the secondary energy consumption flexible steel pipe 3 and the two second limiting holes 4-1 of the constraint steel pipe 4, and the reinforcing steel bar 7 and the primary energy consumption flexible steel pipe 2 are constrained in the first limiting holes 3-1 and the second limiting holes 4-1.
In addition, the size of the through hole or the non-through hole is slightly smaller than that of the stopper pin 6, or a structure such as a protrusion, a convex strip, a convex rib or the like is provided on the inner wall of the hole, or the stopper pin 6 and the insertion hole are designed to be in threaded connection, so that the stopper pin 6 can be firmly held after being wedged, and is prevented from slipping out of the hole.
It will be readily appreciated that the above-described connection of the arresting pin 6 to the reinforcing steel bar 7 is possible and that the strength and reliability of the connection is guaranteed, but this is not the only limitation of the present invention and that other connections reasonably foreseen by a person skilled in the art should not be understood as departing from the spirit of the present invention.
With continued reference to fig. 3 and 4, the third limiting hole 9-1 has the same size as the cross-sectional size of the limiting pin 6, so that the limiting pin 6 is tightly embedded into the third limiting hole 9-1, and the limiting pin 6 is 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-consuming mild steel pipe 2 through the limiting pin 6 and the reinforcing steel bar 7.
Referring again to fig. 1, the present invention provides for the attachment of end connectors 10 at both ends of the brace, the end connectors 10 being adapted 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.
Preferably, the end connecting piece 10 is fixedly connected with the connecting sleeve 9, stress is transmitted to the first-stage energy-consumption soft steel pipe 2 by means of the connecting sleeve 9, the limiting pin 6 and the reinforcing steel bar 7, stable force transmission and buckling energy consumption can be achieved, meanwhile, the connecting sleeve 9 is wrapped outside, the end strength of the whole support is also enhanced to a certain degree, and the requirement of large-tonnage bearing energy consumption is met.
In some embodiments, a sealing plate 8 is welded at the end of the connecting sleeve 9, the sealing plate 8 is only welded with the end of the connecting sleeve 9, but not connected with the primary energy-consuming mild steel pipe 2, the secondary energy-consuming mild steel pipe 3 and the constraint steel pipe 4, and the end connecting piece 10 is welded with the sealing plate 8. 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.
Referring to fig. 1 and 2, as a preferred embodiment, an unbonded sliding layer 5 is further disposed between the concrete core region 1 and the primary energy dissipating soft steel pipe 2, the unbonded sliding layer 5 is formed by an unbonded sliding material in a gap between the concrete core region 1 and the primary energy dissipating soft steel pipe 2, and particularly, the energy dissipating member may be coated with a common material such as polytetrafluoroethylene 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.
Of course, an unbonded sliding layer can be arranged between the first-stage energy consumption soft steel pipe 2 and the second-stage energy consumption soft steel pipe 3 and between the second-stage energy consumption soft steel pipe 3 and the constraint steel pipe 4 independently or simultaneously.
In some embodiments, with continued reference to fig. 1, the length of the first-stage energy-consuming soft steel pipe 2 is shorter than the length of the second-stage energy-consuming soft steel pipe 3 and the length of the constraining steel pipe 4, or the lengths of the second-stage energy-consuming soft steel pipe 3 and the length of the constraining steel pipe 4 are designed to be the same, so that convenience is provided for connecting the limiting pin 6 at one end or two ends of the first-stage energy-consuming soft steel pipe 2, limiting holes can be conveniently formed in the second-stage energy-consuming soft steel pipe 3 and the constraining steel pipe 4, and the limiting pin 6 is connected at one end or two ends of the first-stage energy-consuming soft steel pipe 2 and embedded into the limiting holes.
Even, as shown in fig. 3, the length difference between the first-stage energy-consumption soft steel pipe 2 and the second-stage energy-consumption soft steel pipe 3 and the restraint steel pipe 4 is exactly equal to the length of the reinforcement steel bar 7, so that after the reinforcement steel bar 7 is welded and fixed on the end face of the first-stage energy-consumption soft steel pipe 2, the reinforcement steel bar 7 is flush with the end faces of the second-stage energy-consumption soft steel pipe 3 and the restraint steel pipe 4, and the structural arrangement is more reasonable.
In some embodiments, as shown in fig. 3, two first limiting holes 3-1 are symmetrically formed in the tube wall of the secondary energy consumption soft steel tube 3, and two corresponding second limiting holes 4-1 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, as the case may be, and the symmetrically arranged limiting pins 6 can ensure that the sliding energy consumption on the tube wall section is more reasonable and the stress is more uniform.
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, square or circular section steel pipes, as shown in figures 5-8.
Accordingly, the form of the first and second position-limiting holes 3-1 and 4-1 can be flexibly adjusted, and the present invention is exemplified by rectangular holes, i.e., rectangular long sides along the axial direction of the tube and short sides along the radial direction of the tube, but it is obvious that other forms of holes, such as square holes, circular holes, elliptical holes, cross-shaped holes, etc., do not depart from the spirit of the present invention.
In the invention, the buckling energy dissipation structure can be arranged at one end of the support, namely the first limiting hole 3-1, the second limiting hole 4-1, the limiting pin 6 and the connecting sleeve 9 are arranged at one end, as shown in fig. 5 and 6, the connection mode of the end part connecting piece 10 at the end is not repeated, at the other end of the support, a sealing plate 8 is welded with the first-stage energy dissipation soft steel pipe 2, the second-stage energy dissipation soft steel pipe 3 and the constraint steel pipe 4, the end faces of the steel pipes are sealed, and the end part connecting piece 10 is welded on the sealing plate 8.
Certainly, the buckling energy dissipation structure may also be disposed at both ends of the brace, which depends on the use situation of the brace, that is, the first limiting hole 3-1, the second limiting hole 4-1, the limiting pin 6 and the connecting sleeve 9 are disposed at both ends, as shown in fig. 7 and 8, the manner of disposing both ends is the same, and details are not repeated.
The assembly process of the parallel multi-sleeve 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 (an unbonded sliding material is coated inside to form an unbonded sliding layer 5) with a right sealing plate 8;
secondly, pouring a concrete core area 1;
thirdly, welding the reinforcing steel bar 7 with the left side of the first-stage energy-consumption soft steel pipe 2;
fourthly, brushing an unbonded sliding material outside the first-stage energy-consumption soft steel pipe 2 to form an unbonded sliding layer 5, and sleeving the second-stage energy-consumption soft steel pipe 3 outside the first-stage energy-consumption soft steel pipe 2 and welding the second-stage energy-consumption soft steel pipe with a right sealing plate 8;
fifthly, brushing an unbonded sliding material on the outer side of the secondary energy consumption soft steel pipe 3 to form an unbonded sliding layer 5, and sleeving the constraint steel pipe 4 outside the secondary energy consumption soft steel pipe 3 and welding the constraint steel pipe with a right sealing plate 8;
sixthly, welding a left sealing plate 8 and a connecting sleeve 9, and sleeving the left sealing plate outside the left side of the constraint steel pipe 4;
a seventh part, inserting a limit pin 6;
and eighthly, welding the end connecting piece 10 and the closing plate 8.
The parallel multi-sleeve double-yield-point buckling restrained brace is welded with the sealing plate 8 through the connecting sleeve 9, the sealing plate 8 is welded with the end connecting piece 10, and the connecting sleeve 9 pulls the first-stage energy-consuming mild steel pipe 2 to axially reciprocate under the combined action of the limiting pin 6 and the reinforcing steel bar 7. The method comprises the following three working stages:
(1) a first yield stage for designing the allowable deformation value of the buckling constraint energy consumption to be less than delta1Delta can be reached in the limit state1This is a critical state. When the displacement is less than or equal to delta1When the first-stage energy consumption soft steel pipe 2 generates yield energy consumption, the second-stage energy consumption soft steel pipe 3 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 generating out-of-plane instability, and at the moment, the first-stage energy consumption soft steel pipe 2 generates buckling energy consumption to play an energy dissipation and shock absorption role. In this stage, the concrete core area 1 provides radial restraint for the first-stage energy-consumption soft steel pipe 2, and the soft steel pipe is prevented from being unstable radially inwards.
(2) A second yield stage for designing the allowable deformation value of the buckling constraint energy consumption to be less than delta2But greater than δ1. When the displacement is larger than delta1Is less than or equal to delta2When the energy dissipation device is used, the connecting sleeve 9 pulls the first-stage energy dissipation soft steel pipe 2 and the second-stage energy dissipation soft steel pipe 3 to perform support axial reciprocating motion through the limiting pin 6, at the moment, the first-stage energy dissipation soft steel pipe 2 and the second-stage energy dissipation soft steel pipe 3 perform buckling energy dissipation simultaneously, the restraining steel pipe 4 provides radial restraint for the second-stage energy dissipation soft steel pipe 3 in the stage, the second-stage energy dissipation soft steel pipe 3 is prevented from being unstable, at the moment, the first-stage energy dissipation soft steel pipe 2 already performs buckling energy dissipation in the previous stage, and simultaneously performs buckling energy dissipation with the second-stage energy dissipation soft steel pipe 3 in the stage. The stage is mainly applied to providing energy dissipation and shock absorption guarantee for the structure when the structure encounters rare fortification earthquake action.
(3) In the third stage, after the supporting device finishes the energy dissipation and shock absorption effects of the first two stages, when the displacement continues to increase, the displacement reaches a value larger than delta2At the moment, the connecting sleeve 9 pulls the constraint steel pipe 4 through the limiting pin 6, and the supporting device mainly provides necessary lateral stiffness for the structure through the constraint steel pipe 4, so that the unfavorable condition that the lateral stiffness of the building is suddenly reduced instantaneously due to the fact that the energy consumption component is withdrawn from working under the action of the estimated rare earthquake is avoided.
The invention can solve the problems in the prior art and realize that:
(1) aiming at the traditional buckling restrained brace, only one is provided under the general conditionThe yield point is not yielded under the action of small earthquake, only additional rigidity is provided, the difficult problem of energy consumption is not involved, a first-stage energy consumption soft steel pipe 2 and a second-stage energy consumption soft steel pipe 3 are introduced, and the maximum deformation value delta of energy consumption is restrained 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 problem can be successfully solved;
(2) aiming at the problems that the existing buckling restrained brace mainly depends on core units to perform structural seismic resistance and energy dissipation, when the structure meets the estimated earthquake, the core units consume energy and are damaged, the brace completely quits the work, so that the lateral stiffness resistance of the building is instantly suddenly reduced, and the collapse and the damage of the building are easily caused, the restraint steel pipe 4 is introduced, and when the support energy dissipation soft steel pipe 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-level energy-consumption soft steel pipe 2 is filled with the concrete core area 1 and acts with the connecting sleeve 9 and the constraint steel pipe 4 in a combined manner, 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. The utility model provides a parallelly connected multiple bushing type double yield point buckling restrained brace which characterized in that includes:
the concrete core area is used as a buckling restrained brace buckling-restrained core unit;
the concrete core area is formed by pouring concrete inside the first-stage energy-consumption soft steel pipe, and at least one end of the first-stage energy-consumption soft steel pipe is provided with a limiting pin;
the second-stage energy-consumption soft steel pipe is sleeved outside the first-stage energy-consumption soft steel pipe, and the pipe wall of at least one end of the second-stage energy-consumption soft steel pipe is provided with a first limiting hole;
the constraint steel pipe is sleeved outside the secondary energy consumption soft steel pipe, and the pipe wall of at least one end of the constraint steel pipe is provided with a second limiting hole;
the connecting sleeve is sleeved at least one end outside the restraint steel pipe, and a third limiting hole is formed in the pipe wall of the connecting sleeve; and the number of the first and second electrodes,
the first limiting hole corresponds to the second limiting hole and the third limiting hole in position, the limiting pin is embedded into the first limiting hole, the second limiting hole and the third limiting hole simultaneously, the cross section size of the limiting pin is smaller than that of the first limiting hole, and the size of the first limiting hole is smaller than that of the second limiting hole.
2. The buckling-restrained brace of claim 1, wherein:
at least one end of the first-level energy-consumption soft steel pipe is welded with a section of reinforcing steel bar, the reinforcing steel bar and the first-level energy-consumption soft steel pipe are sleeved in the second-level energy-consumption soft steel pipe, and the limiting pin is arranged on the reinforcing steel bar.
3. The buckling-restrained brace of claim 2, wherein:
the reinforcing steel bar is provided with a through hole, the limiting pin is a whole, penetrates through the through hole, and is embedded into two first limiting holes on the secondary energy consumption soft steel pipe and two second limiting holes on the constraint steel pipe; alternatively, the first and second electrodes may be,
two non-through holes are symmetrically formed in the reinforcing steel bar, two limiting pins are arranged, the two limiting pins are respectively inserted into the two non-through holes, and are embedded into the two first limiting holes in the secondary energy consumption soft steel pipe and the two second limiting holes in the constraint steel pipe.
4. The buckling-restrained brace of claim 1, wherein:
the length of the first-stage energy consumption soft steel pipe is shorter than that of the second-stage energy consumption soft steel pipe and the length of the restraint steel pipe are the same.
5. The buckling-restrained brace of claim 1, wherein:
the size of the third limiting hole is the same as the size of the cross section of the limiting pin, so that the limiting pin is tightly embedded into the third limiting hole.
6. The buckling-restrained brace of claim 1, wherein:
the concrete energy-consumption soft steel pipe is characterized by further comprising an unbonded sliding layer, wherein the unbonded sliding layer is arranged between the concrete core area and the first-stage energy-consumption soft steel pipe, between the first-stage energy-consumption soft steel pipe and the second-stage energy-consumption soft steel pipe, and/or between the second-stage energy-consumption soft steel pipe and the constraint steel pipe.
7. The buckling-restrained brace as claimed in any one of claims 1 to 6, wherein:
the first limiting hole, the second limiting hole, the limiting pin and the connecting sleeve are only arranged at one end of the support, the connecting sleeve is connected with one end part connecting piece in a welding mode, and the first-stage energy-consumption soft steel pipe, the second-stage energy-consumption soft steel pipe and the constraint steel pipe are connected with the other end part connecting piece in a welding mode at the other end of the support; alternatively, the first and second electrodes may be,
the first limiting hole, the second limiting hole, the limiting pin and the connecting sleeve are arranged at two ends of the support, and the connecting sleeves at the two ends are respectively connected with one end part connecting piece in a welding mode.
8. The buckling-restrained brace of claim 7, wherein:
one end of the support is welded with a sealing plate at the end part of the connecting sleeve, the other end of the support is welded with another sealing plate at the end parts of the primary energy-consuming soft steel pipe, the secondary energy-consuming soft steel pipe and the constraint steel pipe, and end part connecting pieces at the two ends are welded with the sealing plates.
9. The buckling-restrained brace of claim 7, wherein:
and sealing plates are welded at the end parts of the connecting sleeves at the two ends of the support, and end part connecting pieces at the two ends are welded with the sealing plates.
10. The buckling-restrained brace as claimed in any one of claims 1 to 6, wherein:
the cross sections of the first-stage energy-consumption soft steel pipe, the second-stage energy-consumption soft steel pipe, the constraint steel pipe and the connecting sleeve are rectangular, square or circular.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958000A (en) * | 2021-12-22 | 2022-01-21 | 北京市建筑设计研究院有限公司 | Series sleeve type double-yield-point buckling restrained brace |
| CN115405010A (en) * | 2022-09-30 | 2022-11-29 | 中铁二局集团建筑有限公司 | Energy consumption segment and segment type combined buckling-restrained energy consumption support structure |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124994A (en) * | 1993-06-02 | 1996-06-19 | 工业研究有限公司 | Motion damper for large structures |
| US20010000840A1 (en) * | 1999-06-30 | 2001-05-10 | Toru Takeuchi | Buckling restrained braces and damping steel structures |
| CN102912884A (en) * | 2012-11-07 | 2013-02-06 | 沈阳建筑大学 | Sleeve confined buckling-restrained brace |
| CN203440942U (en) * | 2013-07-30 | 2014-02-19 | 武汉理工大学 | Parallel-type graded yielding buckling-restrained energy dissipation support |
| CN103924702A (en) * | 2014-04-01 | 2014-07-16 | 北京工业大学 | Double-casing energy-dissipation inner-core buckling restrained brace member with double yield points |
| CN103938748A (en) * | 2014-04-01 | 2014-07-23 | 北京工业大学 | Linear energy-consumption inner core buckling-restrained supporting component with double yield points |
| JP2015025272A (en) * | 2013-07-25 | 2015-02-05 | Ｊｆｅスチール株式会社 | Damping seismic composite member and building using the same |
| KR20170014540A (en) * | 2015-07-30 | 2017-02-08 | 부산대학교 산학협력단 | Buckling Restraint Brace with assembly type steel restraint material |
| CN111962708A (en) * | 2020-09-07 | 2020-11-20 | 上海史狄尔建筑减震科技有限公司 | Bearing-multistage composite energy dissipation buckling restrained brace component |
| 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 |
| CN113417502A (en) * | 2021-07-28 | 2021-09-21 | 北京市建筑设计研究院有限公司 | Double-yield-point buckling restrained brace |
-
2021
- 2021-12-22 CN CN202111575110.7A patent/CN113958001B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124994A (en) * | 1993-06-02 | 1996-06-19 | 工业研究有限公司 | Motion damper for large structures |
| US20010000840A1 (en) * | 1999-06-30 | 2001-05-10 | Toru Takeuchi | Buckling restrained braces and damping steel structures |
| CN102912884A (en) * | 2012-11-07 | 2013-02-06 | 沈阳建筑大学 | Sleeve confined buckling-restrained brace |
| JP2015025272A (en) * | 2013-07-25 | 2015-02-05 | Ｊｆｅスチール株式会社 | Damping seismic composite member and building using the same |
| CN203440942U (en) * | 2013-07-30 | 2014-02-19 | 武汉理工大学 | Parallel-type graded yielding buckling-restrained energy dissipation support |
| CN103924702A (en) * | 2014-04-01 | 2014-07-16 | 北京工业大学 | Double-casing energy-dissipation inner-core buckling restrained brace member with double yield points |
| CN103938748A (en) * | 2014-04-01 | 2014-07-23 | 北京工业大学 | Linear energy-consumption inner core buckling-restrained supporting component with double yield points |
| KR20170014540A (en) * | 2015-07-30 | 2017-02-08 | 부산대학교 산학협력단 | Buckling Restraint Brace with assembly type steel restraint material |
| CN111962708A (en) * | 2020-09-07 | 2020-11-20 | 上海史狄尔建筑减震科技有限公司 | Bearing-multistage composite energy dissipation buckling restrained brace component |
| 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 |
| CN113417502A (en) * | 2021-07-28 | 2021-09-21 | 北京市建筑设计研究院有限公司 | Double-yield-point buckling restrained brace |
Non-Patent Citations (3)
| Title |
|---|
| 万金国等: "双屈服点免断裂屈曲约束支撑性能试验与数值模拟", 《建筑结构》 * |
| 张艳晖等: "屈曲约束支撑概念设计综述", 《低温建筑技术》 * |
| 杜永峰等: "连梁软钢阻尼器设计及其多级耗能的实现", 《湖南科技大学学报(自然科学版)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958000A (en) * | 2021-12-22 | 2022-01-21 | 北京市建筑设计研究院有限公司 | Series sleeve type double-yield-point buckling restrained brace |
| CN113958000B (en) * | 2021-12-22 | 2022-03-04 | 北京市建筑设计研究院有限公司 | Series sleeve type double-yield-point buckling restrained brace |
| CN115405010A (en) * | 2022-09-30 | 2022-11-29 | 中铁二局集团建筑有限公司 | Energy consumption segment and segment type combined buckling-restrained energy consumption support structure |
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