CN113944358A - Assembled beam-column node constraint type pure steel buckling-restrained energy-dissipation brace - Google Patents
Assembled beam-column node constraint type pure steel buckling-restrained energy-dissipation brace Download PDFInfo
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- CN113944358A CN113944358A CN202111198810.9A CN202111198810A CN113944358A CN 113944358 A CN113944358 A CN 113944358A CN 202111198810 A CN202111198810 A CN 202111198810A CN 113944358 A CN113944358 A CN 113944358A
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- E—FIXED CONSTRUCTIONS
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- 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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- E—FIXED CONSTRUCTIONS
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- 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
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Abstract
The invention provides an assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace, which comprises: the assembled beam-column node constraint type pure steel buckling-restrained brace provided by the invention can effectively solve the problems that the traditional buckling-restrained brace is high in loading and unloading difficulty, difficult to detect the damage degree after earthquake, random in yield position and the like, has stable support performance, obvious energy-consuming and damping effects, is easy to detect and replace, is a key for ensuring earthquake-proof safety and reducing post-disaster loss, and has very important practical significance and social and economic value.
Description
Technical Field
The invention relates to the technical field of energy dissipation and shock absorption of civil engineering structures, in particular to an assembled beam-column joint constrained pure steel buckling-restrained energy dissipation support.
Background
The pure frame structure has limited lateral stiffness, so that the lateral deformation of the structure is large under the action of strong wind and earthquake, the application height of the pure frame structure is limited, the problem of insufficient lateral stiffness of the frame structure is solved to a certain extent by reasonably arranging the supports in the frame structure, but the support is easy to generate buckling phenomenon when encountering earthquake or generating large deformation under the action of large external force, and the support or the connection is easy to damage or even lose efficacy. In order to solve the problem of buckling of the support under pressure, a support member capable of preventing buckling is produced at the same time, and the support member is called as a buckling-restrained energy-consuming support.
The buckling-restrained energy-dissipation brace can be applied to obviously improve the defect that the traditional brace component is easy to buckle when being pressed, obviously improve the lateral force resistance and the shock resistance of a frame structure system, and meanwhile, by utilizing the yielding energy-dissipation characteristics of the self component, the buckling-restrained energy-dissipation brace is not only a brace component of a structure, but also an energy dissipation element with excellent energy dissipation performance. However, the buckling restrained form in the traditional buckling-restrained energy-consuming brace is mostly formed by filling concrete in a rectangular or round steel pipe, and the restrained form has the defects of large self weight, high loading and unloading difficulty, random yield position, difficulty in detection and repair after an earthquake and the like.
Disclosure of Invention
The invention provides an assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace, which is used for solving the defects that the traditional buckling-restrained energy-dissipation brace in the prior art has large dead weight, high loading and unloading difficulty, random yield position, difficulty in detection and repair after earthquake and the like.
The invention provides an assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace, which comprises: the energy-saving energy;
the four C-shaped restraining members are respectively arranged at four right angles of the cross-shaped core material, and the openings of the C-shaped restraining members face to the right angle of the cross-shaped core material;
the four angle steels are matched to form the cross-shaped core material, and the energy dissipation gasket is filled between every two adjacent angle steels.
According to the fabricated beam-column joint constraint type pure steel buckling-restrained energy-dissipation brace provided by the invention, the edge of the cross-shaped core material is provided with a plurality of V-shaped grooves.
According to the fabricated beam-column joint constraint type pure steel buckling-restrained energy-dissipation brace provided by the invention, the C-shaped constraint component comprises a first side plate, a top plate, a second side plate and a bottom plate;
the first side plate is bent and extended to form the top plate, the top plate is bent and extended to form the second side plate, the second side plate is bent and extended to form the bottom plate, and a gap is reserved between the first side plate and the bottom plate to form the opening.
According to the assembled beam-column node constraint type pure steel buckling-restrained energy-dissipation brace provided by the invention, the assembled beam-column node constraint type pure steel buckling-restrained energy-dissipation brace further comprises a bolt group;
the right-angle side of the cross-shaped core material is connected with the two first side plates which are abutted against the right-angle side of the cross-shaped core material through the bolt group; the right-angle side of the cross-shaped core material is connected with the two bottom plates which are abutted against the right-angle side of the cross-shaped core material through the bolt group.
According to the fabricated beam-column joint constraint type pure steel buckling-restrained energy dissipation brace provided by the invention, the top plate and the second side plate are both provided with through holes.
According to the fabricated beam-column joint constrained pure steel buckling-restrained energy-dissipation brace provided by the invention, the bolt group comprises a bolt, a gasket, a nut and a nut;
the bolt is in threaded connection with the nut, a plurality of first bulges are arranged on one side of the gasket along the circumferential direction, a second bulge is arranged between every two adjacent first bulges, the first bulges extend along the radial direction of the gasket, and the second bulges extend along the circumferential direction of the gasket;
one end of the nut is provided with a plurality of first grooves along the circumferential direction, and the nut and the gasket are assembled with the first bulges through the first grooves;
the nut is sleeved with the nut, one end of the nut is provided with a plurality of second grooves along the circumferential direction, and a third groove is arranged between every two adjacent second grooves;
the nut and the gasket are assembled through the second groove and the first protrusion and the third groove and the second protrusion.
According to the fabricated beam-column node constraint type pure steel buckling-restrained energy-dissipation brace provided by the invention, the fabricated beam-column node constraint type pure steel buckling-restrained energy-dissipation brace further comprises a beam-column node constraint steel pipe and a connecting plate;
the connecting plates are arranged at two ends of the cross-shaped core material in a matched mode, the connecting plates are connected with the beam column node constraint steel pipes in a one-to-one corresponding mode, and the beam column node constraint steel pipes are used for being wrapped at beam column nodes.
According to the fabricated beam-column node constraint type pure steel buckling-restrained energy dissipation brace provided by the invention, the energy dissipation gasket is of a cross structure, and the four angle steels are correspondingly arranged at the four right angles of the energy dissipation gasket one by one.
According to the fabricated beam-column joint constraint type pure steel buckling-restrained energy-dissipation brace provided by the invention, the yield strength of the angle steel is smaller than that of the C-shaped constraint component.
According to the fabricated beam-column joint constraint type pure steel buckling-restrained energy-dissipation brace provided by the invention, the yield strength of the angle steel is 345MPa or 235 MPa; the yield strength of the C-shaped constraint component is greater than or equal to 420 MPa.
The invention provides an assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace, which comprises: the buckling restrained brace comprises a cross-shaped core material, energy dissipation gaskets and C-shaped constraint components, wherein the cross-shaped core material is formed by matching four angle steels, the energy dissipation gaskets are filled between two adjacent angle steels, when the structure generates lateral displacement, the cross-shaped core material can generate deformation under the action of axial force, and simultaneously the elastic body is driven to generate shearing deformation to dissipate energy, so that stable energy dissipation of the buckling restrained brace under small deformation of the structure is realized, furthermore, the four C-shaped constraint components are respectively arranged at four right angles of the cross-shaped core material, the opening of the C-shaped constraint component faces to a right angle of the cross-shaped core material, the C-shaped constraint component and the cross-shaped energy dissipation core material are combined to form a stable buckling restrained brace structure, the problems that the traditional buckling restrained brace is high in assembly and disassembly difficulty, difficult to detect the damage degree after earthquake, random in the yield position and the like can be effectively solved, and the bracing performance of the buckling restrained brace is stable, The energy dissipation and shock absorption device has the advantages of remarkable energy dissipation and shock absorption effects, easiness in detection and replacement, practicability and high efficiency, is the key for ensuring the shock resistance safety and reducing the loss after a disaster, and has very important practical significance and social and economic values.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of an assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace provided in an embodiment of the present invention;
fig. 2 is a schematic view of an overall structure of the fabricated beam-column joint-constrained pure steel buckling-restrained energy-dissipation brace provided in the embodiment of the present invention;
FIG. 3 is an exploded view of a cross-shaped core material according to an embodiment of the present invention;
FIG. 4 is an exploded view of a C-shaped restraining member provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a connection structure of a cross-shaped core material and a connection plate according to an embodiment of the present invention;
FIG. 6 is a second schematic view of a connection structure of a cross-shaped core material and a connection plate according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a bolt set provided in an embodiment of the present invention;
FIG. 8 is a schematic view of a bolt structure provided in an embodiment of the present invention;
FIG. 9 is a schematic view of a gasket construction provided by an embodiment of the present invention;
FIG. 10 is a schematic view of a nut structure provided by an embodiment of the present invention;
FIG. 11 is a schematic view of a nut structure according to an embodiment of the present invention;
fig. 12 is a schematic connection diagram of the fabricated beam-column joint-constrained pure steel buckling-restrained energy-dissipation brace and a beam-column structure provided in the embodiment of the present invention;
reference numerals:
1: a cross-shaped core material; 11: angle steel; 12: a V-shaped groove;
2: an energy dissipation gasket; 3: a C-shaped restraining member; 31: a first side plate;
32, a top plate; 33: a second side plate; 34: a base plate;
35: a through hole; 4, a bolt group; 41: a bolt;
42: a gasket; 421: a first protrusion; 422: a second protrusion;
43: a nut; 431: a first groove; 44: a nut;
441: a second groove; 442: a third groove; 5: the beam-column joints constrain the steel pipes;
6: a connecting plate.
Detailed Description
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "plurality" means two or more, and other terms are analogous.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides an assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace, which is used for solving the defects that the traditional buckling-restrained energy-dissipation brace in the prior art has large dead weight, high loading and unloading difficulty, random yield position, difficulty in detection and repair after earthquake and the like.
The assembled beam-column node-constrained pure steel buckling-restrained energy dissipation brace of the invention is described below with reference to fig. 1 to 12.
The embodiment of the invention provides an assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace, which comprises: the energy-saving core material comprises a cross-shaped core material 1, an energy-consuming gasket 2 and C-shaped constraint components 3, wherein the four C-shaped constraint components 3 are respectively arranged at four right angles of the cross-shaped core material 1, and the openings of the C-shaped constraint components 3 face to the right angle of the cross-shaped core material 1.
The four angle steels 11 are matched to form a cross-shaped core material 1, and an energy dissipation gasket 2 is filled between every two adjacent angle steels 11.
Specifically, as shown in fig. 1 and fig. 2, the cross-shaped core 1 is formed by matching four angle steels 11, the four angle steels 11 may adopt low-yield-strength steel, for example, steel with a model of Q345 or Q235, the flanges of the angle steels are connected in a back-to-back manner by high-strength bolts, wherein the flanges of the angle steels 11 may be the same or different in length, when the flanges of the angle steels 11 are different in length, the short flange and the short flange of each angle steel 11 need to be connected in a back-to-back manner during installation, and the long flange are connected in a back-to-back manner.
Gaps of 1 mm-2 mm are reserved between the angle steels 11 in the cross-shaped core material 1, energy dissipation gaskets 2 are filled in the gaps between every two adjacent angle steels 11 to increase energy dissipation approaches, the defect that the traditional energy dissipation support core material does not consume energy in the elastic working stage is overcome, stable energy dissipation of the whole stage of the energy dissipation support is achieved, the filling mode can be omnibearing filling, the gaps formed by the cross-shaped core material 1 are completely filled, or can be partially filled in sections, the filling materials are placed in the gaps in sections, the specific filling mode can be selected according to actual requirements, when the structure can generate lateral displacement, the cross-shaped core material 1 deforms under the action of axial force, the energy dissipation gaskets 2 are driven to generate shearing deformation to dissipate energy, stable energy dissipation of the buckling-proof support under small deformation of the structure is achieved, and meanwhile, consumable materials are saved as far as possible.
The C-shaped restraining component 3 is made of a metal material with high yield strength, the opening of the C-shaped restraining component faces the right angle of the cross-shaped core material 1, the C-shaped restraining component 3 and the cross-shaped core material 1 are connected to form a pure steel buckling-restrained energy dissipation support with certain strength, correspondingly, a certain supporting effect can be achieved on the structure, and therefore the problem that the lateral stiffness of the frame structure is insufficient is solved.
It should be noted that: the buckling-restrained energy-dissipation brace provided by the embodiment of the invention has the advantages that all parts and components can be processed and manufactured in a factory, the precision of the parts and the components is controllable, the fully-assembled components can be assembled and installed on site, the construction is convenient and fast, and meanwhile, the energy can be saved and the consumption can be reduced.
The embodiment of the invention provides an assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace, which comprises: the buckling restrained brace comprises a cross-shaped core material 1, energy dissipation gaskets 2 and C-shaped constraint components 3, wherein the cross-shaped core material 1 is formed by matching four angle steels 11, the energy dissipation gaskets 2 are filled between two adjacent angle steels 11, when the structure generates lateral displacement, the cross-shaped core material 1 can deform under the action of axial force, and meanwhile, the energy dissipation gaskets 2 are driven to generate shearing deformation and energy dissipation, so that the buckling restrained brace can stably dissipate energy under small structural deformation, furthermore, the four C-shaped constraint components 3 are respectively arranged at four right angles of the cross-shaped core material 1, the openings of the C-shaped constraint components 3 face to the right angle of the cross-shaped core material 1, the C-shaped constraint components 3 and the cross-shaped core material 1 are combined to form the stable buckling restrained brace, and the buckling restrained brace can effectively improve the problems that the traditional buckling restrained brace is difficult to assemble and disassemble, the damage degree after earthquake is difficult to detect, The buckling-restrained energy-dissipation brace has the advantages that the buckling-restrained energy-dissipation brace is stable in bracing performance, obvious in energy-dissipation and shock-absorption effects, easy to detect and replace, practical and efficient, is the key for guaranteeing shockproof safety and reducing post-disaster loss, and has very important practical significance and social and economic values.
In an alternative embodiment, a plurality of V-grooves 12 are provided at the edge of the cross-shaped core material 1. Specifically, the arrangement form of the V-shaped grooves 12 can be flexibly arranged according to specific design requirements, wherein as shown in fig. 2 and fig. 3, a plurality of V-shaped grooves 12 are sequentially arranged at the edge of the cross-shaped core material 1 along the extending direction of the cross-shaped core material 1, the number of the V-shaped grooves 12 is not specifically limited, the V-shaped grooves can be formed according to actual conditions, the depth of the groove openings of the V-shaped grooves 12 is 1/15-1/10 of the length of the flange of the angle steel 11, the V-shaped grooves 12 are arranged to generate a stress concentration effect when the structure is deformed under the action of external force, so that the core energy consumption units are reasonably weakened, and stable energy consumption of the energy consumption support is guaranteed, and positioning yield is realized. After the earthquake, a detector can quickly and pertinently detect the damage degree of the support according to the position of the positioning yield point and consider whether to replace the cross-shaped core material 1 according to a detection result, so that the buckling-restrained energy-dissipation support can be easily detected and replaced according to the damage degree of a specific part in the using process, and the problems that the detection difficulty is high after the earthquake and the like caused randomly by the yield position of the traditional support are solved.
In an alternative embodiment, the C-shaped restraining member 3 comprises a first side plate 31, a top plate 32, a second side plate 33 and a bottom plate 34.
The first side plate 31 is bent and extended to form a top plate 32, the top plate 32 is bent and extended to form a second side plate 33, the second side plate 33 is bent and extended to form a bottom plate 34, and a gap is reserved between the first side plate 31 and the bottom plate 34 to form an opening.
Specifically, as shown in fig. 1 and 4, the C-shaped constraint member 3 is composed of four parts, namely, a first side plate 31, a top plate 32, a second side plate 33 and a bottom plate 34, wherein the first side plate 31 is connected with and vertically arranged with the top plate 32, the top plate 32 is connected with and vertically arranged with the second side plate 33, the first side plate 31 is opposite to and parallel to the second side plate 33, the second side plate 33 is connected with and vertically arranged with the bottom plate 34, the top plate 32 is opposite to and parallel to the bottom plate 34, and an opening is formed between the first side plate 31 and the bottom plate 34.
The C-shaped restraining component 3 is arranged to prevent the cross-shaped core material 1 from buckling under pressure, so that the material is preferably high-strength steel with yield strength higher than that of the cross-shaped core material 1, such as Q420 and above high-strength steel, so as to adjust the strength and rigidity of the buckling-restrained energy-dissipation brace, the rigidity of the restraining component can be increased by adopting the high-strength steel, the strength of the whole structure is enhanced, the restraining effect of the restraining component on the buckling of the core material is improved, the higher yield strength of the restraining component can also be used as a secondary energy dissipation element after the core material is seriously buckled under large deformation, staged yield energy dissipation is realized, the deformation of the cross-shaped core material 1 is effectively limited, and the unrecoverable damage caused by deformation due to external force is avoided.
In addition, the C-shaped constraint member 3 may be a plate structure formed by bending a steel plate, or a profile structure formed by a tool at one time, and the specific manufacturing process may be selected according to actual conditions.
In an alternative embodiment, the fabricated beam-column node-constrained pure steel buckling-restrained energy dissipation brace further comprises a bolt group 4.
The right-angle side of the cross-shaped core material 1 is connected with the two first side plates 31 which are abutted against the right-angle side of the cross-shaped core material 1 through the bolt group 4; the right-angle side of the cross-shaped core material 1 is connected with the two bottom plates 34 which are abutted against the right-angle side of the cross-shaped core material 1 through the bolt group 4.
Specifically, as shown in fig. 2, 5 and 6, adjacent angle steels 11 in the cross-shaped core material 1 are connected by the bolt group 4, and the specific connection mode includes the following two cases: taking the transverse assembly of the cross-shaped core material 1 as an example, firstly, at the position close to the edge of the flange of one angle steel 11, a bolt group 4 sequentially penetrates through the flange of one angle steel 11, an energy dissipation gasket 2 and the flange of the other angle steel 11 from left to right or from right to left, and two adjacent angle steels 11 are connected by bolts, wherein the bolt groups 4 installed in the mode are two groups and are positioned at the outermost edge of the cross-shaped core material 1 in the longitudinal direction; two, at the department of bending that is close to angle steel 11, bolt group 4 passes the first curb plate 31 of a C font restraint component 3 from left to right or from right to left in proper order, the edge of a wing of an angle steel 11, power consumption gasket 2, the edge of a wing of another angle steel 11 and the first curb plate 31 of another C font restraint component 3, with two C font restraint components 3 with the right angle limit looks butt of cross core 1, two angle steels 11 and power consumption gasket 2 pass through 4 bolted connection of bolt group, the bolt group 4 of installing with this mode totally two sets of, be located the near center department of the longitudinal direction of cross core 1.
Similarly, the longitudinal assembling mode of the cross-shaped core material 1 is similar to that described above, and is divided into two cases: firstly, at the position close to the edge of the flange of the angle steel 11, a bolt group 4 sequentially penetrates through the flange of one angle steel 11, an energy dissipation gasket 2 and the flange of the other angle steel 11 from top to bottom or from bottom to top, two adjacent angle steels 11 are connected through bolts, and the bolt groups 4 installed in the mode are two groups and are positioned at the outermost edge of the cross-shaped core material 1 in the transverse direction; and secondly, at the bending part close to the angle steel 11, the bolt group 4 sequentially penetrates through the bottom plate 34 of one C-shaped constraint component 3, the flange of one angle steel 11, the energy dissipation gasket 2, the flange of the other angle steel 11 and the bottom plate 34 of the other C-shaped constraint component 3 from top to bottom or from bottom to top, the two C-shaped constraint components 3 which are abutted to the right-angle side of the cross-shaped core material 1, the two angle steels 11 and the energy dissipation gasket 2 are connected through the bolt group 4, the bolt groups 4 installed in the mode are two groups in total, and the bolt groups are located near the center of the cross-shaped core material 1 in the transverse direction.
No matter be the angle steel 11 with the angle steel between 11, still be connected between angle steel 11 and the C font restraint component 3, the purpose that all adopts bolt group 4 to connect makes holistic structure convenient to detach, receives external force damage back when the structure, can be nimble replace the part of damage, realize the easy detection change and the practical high efficiency of device, reduce the loss after the calamity.
In an alternative embodiment, the top plate 32 and the second side plate 33 are each provided with a through hole 35.
Specifically, as shown in fig. 2, 5, and 6, through holes 35 are formed in a top plate 32 and a second side plate 33 of the C-shaped constraint member 3, which are in butt joint with the angle iron 11, and the through holes 35 may be one rectangular long hole as shown in fig. 6, where one rectangular long hole corresponds to installation of all the bolt sets 4, or may be a plurality of rectangular long holes, where each rectangular long hole corresponds to installation of a plurality of bolt sets 4, or may be one through hole 35 as shown in fig. 5 corresponding to one bolt set 4, and the through holes 35 are a plurality of independent small square holes or circular holes, and the specific shape and installation form may be selected according to actual conditions, and the positions and sizes of the through holes 35 may satisfy the requirements for arrangement and installation of the bolt sets 4, and the holes 35 should not be too large, and the nuts 43 may be installed on the premise that constraint capability is not affected.
In an alternative embodiment, the bolt set 4 includes a bolt 41, a washer 42, a nut 43, and a nut 44.
The bolt 41 is in threaded connection with the nut 43, one side of the gasket 42 is provided with a plurality of first protrusions 421 along the circumferential direction, a second protrusion 422 is arranged between two adjacent first protrusions 421, the first protrusions 421 extend along the radial direction of the gasket 42, and the second protrusions 422 extend along the circumferential direction of the gasket 42.
One end of the nut 43 is provided with a plurality of first grooves 431 in a circumferential direction, and the nut 43 and the spacer 42 are fitted with the first protrusion 421 through the first grooves 431.
The nut 44 is sleeved on the nut 43, one end of the nut 44 is provided with a plurality of second grooves 441 along the circumferential direction, and a third groove 442 is arranged between every two adjacent second grooves 441;
the nut 44 and the gasket 42 are assembled with the first protrusion 421 through the second groove 441 and the third groove 442 and the second protrusion 422.
Specifically, as shown in fig. 7 to 11, the bolt group 4 is composed of four parts, a bolt 41, a washer 42, a nut 43, and a nut 44. After the bolt 41 passes through the components to be connected, a gasket 42, a nut 43 and a nut 44 are sequentially mounted on the exposed threaded section, as shown in fig. 9, a plurality of first protrusions 421 and a plurality of second protrusions 422 are arranged on the gasket 42 along the circumferential direction, wherein the first protrusions 421 extend along the radial direction of the gasket 42 and extend from the inner ring of the gasket 42 to the outermost edge of the gasket 42, the second protrusions 422 are arranged between two adjacent first protrusions 421, the extending direction of the second protrusions 422 is different from that of the first protrusions 421, and the second protrusions 422 extend along the circumferential direction of the gasket 42 and are of an arc-shaped structure which keeps the radian consistent with that of the gasket 42. When installed, the washer 42 has a convex side away from the bolt head for subsequent installation of the nut 43 and nut 44.
As shown in fig. 10, a plurality of first grooves 431 are provided on the nut 43, the first grooves 431 extend in the radial direction of the nut 43, extend from the inner ring of the nut 43 to the outermost edge, and are arranged in the circumferential direction, the first grooves 431 of the nut 43 are matched with the first protrusions 421 of the gasket 42, after the gasket 42 is installed, the nut 43 is screwed to be just clamped with the gasket 42, and a certain pre-tightening force is applied after the nut 43 is screwed, so that the bolt 41 can be prevented from loosening.
As shown in fig. 11, the nut 44 is provided with a plurality of second grooves 441 and a plurality of third grooves 442 along the circumferential direction, the nut 44 is sleeved on the nut 43, the inner diameter of the nut 44 is not smaller than the outer diameter of the nut 43, after the nut 43 is installed, the nut 44 is sleeved on the nut 43, the second grooves 441 of the nut 44 are assembled with the first protrusions 421, and the third grooves 442 of the nut 44 are assembled with the second protrusions 422, so that the possibility of loosening of the bolt group 4 in a shake is further reduced, and the shockproof safety is ensured.
In an optional embodiment, the fabricated beam-column node-constrained pure steel buckling-restrained energy-dissipation brace further comprises a beam-column node-constrained steel pipe 5 and a connecting plate 6.
The two ends of the cross-shaped core material 1 are provided with connecting plates 6 in a matching mode, the connecting plates 6 are connected with beam column node constraint steel pipes 5 in a one-to-one correspondence mode, and the beam column node constraint steel pipes 5 are used for being wrapped at beam column nodes.
Specifically, as shown in fig. 5 and 6, the two ends of the cross-shaped core 1 are both provided with the connecting plates 6, the connecting plates 6 can be bolted to the ends of the cross-shaped core 1, in order to realize the detachable assembly of the whole device and facilitate the subsequent replacement of the damaged connecting plates 6, a bolt connection installation mode is adopted, and at this time, the cross-shaped core 1 is changed into a vertical line shape near the end section.
As shown in fig. 12, the beam-column node constraint steel pipes 5 can be embedded or secondarily installed to wrap and constrain the beam-column nodes, the beam-column nodes can be circular or square, the concrete shape is set by referring to the shapes of the beam and the column, and the beam-column node constraint steel pipes 5 wrap the joints of each beam and column so as to be connected with the cross-shaped core material 1 through the connecting plates 6.
The beam column node constraint steel pipes 5 are used for effectively delaying the concrete damage of the beam column node, so that the plastic hinge areas of beam and column members are developed more fully, the structural deformation performance is improved, and the integral seismic resistance and energy consumption capacity of the structure is improved. Meanwhile, the beam-column node constraint steel pipe 5 can be used as a connecting component of the buckling-restrained energy-dissipation brace and the main structure, so that the buckling-restrained energy-dissipation brace and the original structure have good cooperative working performance, and the force transmission path of the structure is further optimized.
The assembled beam-column node constraint type pure steel buckling-restrained energy dissipation brace is reasonably matched and combined with the beam-column node constraint steel tube 5 through the fully assembled buckling-restrained energy dissipation brace, and the assembled pure steel buckling-restrained energy dissipation brace is simple in process, easy to detect and replace, remarkable in energy dissipation and shock absorption effects and high in structural safety performance, can effectively improve the damage resistance of a frame structure, and achieves the performance goals that the structure is slightly damaged after earthquake and is easy to repair quickly.
In an alternative embodiment, the energy dissipation gasket 2 is a cross structure, and the four angle steels 11 are correspondingly arranged at four right angles of the energy dissipation gasket 2.
Specifically, the structure of energy dissipation gasket 2 is identical with the shape that four angle steel 11 formed the space, and for the cruciform structure, four right angle punishment of energy dissipation gasket 2 do not correspond and are equipped with four angle steel 11, and the space of cruciform core 1 is full by energy dissipation gasket 2 completely and can make buckling restrained brace realize the stable power consumption of full stage under the earthquake effect to furthest's reduction overall structure receives the damage.
In an alternative embodiment, the angle steel 11 has a yield strength less than that of the C-shaped restraining member 3.
The yield strength of the angle steel 11 is 345MPa or 235MPa, and the yield strength of the C-shaped constraint component 3 is more than or equal to 420 MPa.
Specifically, the angle steel 11 is a steel material with low yield strength, such as a steel material with a model number of Q345 or Q235, and mainly has the function of forming the cross-shaped core material 1 connected between the beam-column nodes for energy dissipation when the structure deforms. The yield strength of the C-shaped constraint component 3 is greater than that of the angle steel 11, high-strength steel with the model number of Q420 or above is selected, the function of the C-shaped constraint component is to prevent the cross-shaped core material 1 from buckling under pressure, the strength and rigidity of the buckling-restrained energy-dissipation support are adjusted, the rigidity of the whole frame structure is enhanced, and the steel with the yield strength greater than that of the angle steel 11 is selected as the C-shaped constraint component 3 to better protect the cross-shaped core material 1, so that a beam column body connected with the cross-shaped core material 1 is protected. The buckling limiting effect of the core material can be realized by reasonably designing the strength of the external constraint component, and meanwhile, the higher yield strength of the external constraint component compared with the core material can also be used as a secondary energy dissipation element after the core material is seriously buckled under large deformation of the structure, so that the staged yield energy dissipation is realized.
In an optional embodiment, the energy dissipation gasket 2 serves to increase an energy dissipation way, overcome the defect that the traditional energy dissipation support core material does not dissipate energy in an elastic working stage, and realize stable energy dissipation of the whole stage of the energy dissipation support, so that the energy dissipation gasket 2 can be made of butyl rubber or other high-energy-dissipation viscoelastic materials.
The embodiment of the invention also provides a manufacturing method of the assembled beam-column joint constrained pure steel buckling-restrained energy-dissipation brace, which comprises the following steps:
s1, prefabricating a cross core 1, energy dissipation gaskets 2, C-shaped constraint components 3 and connecting plates 6 according to the actual required size on site, wherein the cross core 1 comprises 4 steel angles 11, the number of the energy dissipation gaskets 2 is 1, the number of the C-shaped constraint components 3 is 4, the number of the connecting plates 6 is 4, the steel of Q345 or Q235 is selected for the steel angles 11, the high-strength steel of Q420 or above is selected for the C-shaped constraint components 3, the hole opening processing is respectively carried out on the 4 steel angles 11, the 1 energy dissipation gaskets 2, the 4C-shaped constraint components 3 and the 4 connecting plates 6 for subsequent installation bolt groups 4, the rectangular hole opening processing is carried out on the 4C-shaped constraint components 3 for subsequent fastening bolts, and the V-shaped groove 12 processing is carried out on each flange of the 4 steel angles 11. Thus, the pretreatment of the steel is completed.
S2, placing 4 angle steels 11 at 4 right angles of the energy dissipation gasket 2 in a one-to-one correspondence manner, splicing and assembling, and connecting the energy dissipation gasket 2 and the angle steels 11 by using the bolt group 4 to form the cross-shaped core material 1 after assembling.
S3, after the assembly of the cross-shaped core material 1 is completed, 4C-shaped restraining components 3 are respectively arranged at 4 right angles of the cross-shaped core material 1, the opening of each C-shaped restraining component 3 faces the right angle of the cross-shaped core material 1, the cross-shaped core material 1 and the C-shaped restraining components 3 are connected through the bolt groups 4 to form a whole, then, 4 (2 at each end) connecting plates 6 are respectively connected with two end parts of the cross-shaped core material 1 through the bolt groups 4 and apply certain pre-tightening force, and therefore the complete assembly type beam-column node restraining type pure steel buckling-preventing energy-consuming support is completed.
S4, connecting plates 6 at two ends of the assembled beam-column node constraint type pure steel buckling-restrained energy dissipation brace and beam-column node constraint steel pipes 5 wrapped on the surface of the beam-column body are connected, assembling of the assembled beam-column node constraint type pure steel buckling-restrained energy dissipation brace and a frame structure is achieved, when the frame structure with different complexity is faced, a plurality of assembled beam-column node constraint type pure steel buckling-restrained energy dissipation braces can be arranged in the frame structure according to actual needs, and therefore reinforcement and shock resistance of the frame structure are achieved.
According to the manufacturing method of the fabricated beam-column joint constraint type pure steel buckling-restrained energy dissipation brace, on the first hand, the energy dissipation gasket 2 is filled in the cross-shaped core material 1, as long as the structure generates lateral displacement, the cross-shaped core material 1 deforms under the action of axial force, and meanwhile, the energy dissipation gasket 2 is driven to generate shearing deformation to dissipate energy, so that stable energy dissipation of the buckling-restrained brace under small structural deformation is realized; in the second aspect, the cross-shaped core material 1 can be provided with the V-shaped grooves 12 at the designated positions of the angle steels 11 of the cross-shaped core material 1 according to the design requirements to realize the positioning yield of the cross-shaped core material 1, the buckling limiting effect of the core material can be realized by reasonably designing the strength of the C-shaped restraining component 3, and meanwhile, the higher yield strength of the C-shaped restraining component compared with the cross-shaped core material 1 can also be used as a secondary energy dissipation element after the core material is seriously yielded under the large deformation of the structure, so that the staged yield energy dissipation is realized; in the third aspect, the whole assembly is carried out by adopting the connection mode of the bolt groups 4, the assembly and installation of the fully-assembled components can be completed on site, the construction is convenient and rapid, and meanwhile, the energy can be saved and the consumption can be reduced; in the fourth aspect, the beam-column node constraint steel pipes 5 can effectively delay concrete damage of the beam-column node, so that plastic hinge areas of beam and column members are developed more fully, structural deformation performance is improved, the whole anti-seismic energy dissipation capacity of the structure is improved, meanwhile, the beam-column node constraint steel pipes 5 can be used as connecting members of the buckling-restrained energy dissipation brace and a main body structure, and the buckling-restrained energy dissipation brace and the beam-column structure are guaranteed to have good cooperative working performance.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a restricted type pure steel buckling restrained energy dissipation brace of assembled beam column node which characterized in that includes: the energy-saving energy;
the four C-shaped restraining members are respectively arranged at four right angles of the cross-shaped core material, and the openings of the C-shaped restraining members face to the right angle of the cross-shaped core material;
the four angle steels are matched to form the cross-shaped core material, and the energy dissipation gasket is filled between every two adjacent angle steels.
2. The fabricated beam-column joint constraint type pure steel buckling-restrained energy dissipation brace as claimed in claim 1, wherein a plurality of V-shaped grooves are formed in the edge of the cross-shaped core material.
3. The fabricated beam-column node-constrained pure steel buckling-restrained brace as claimed in claim 1, wherein the C-shaped constraining member comprises a first side plate, a top plate, a second side plate and a bottom plate;
the first side plate is bent and extended to form the top plate, the top plate is bent and extended to form the second side plate, the second side plate is bent and extended to form the bottom plate, and a gap is reserved between the first side plate and the bottom plate to form the opening.
4. The fabricated beam-column node-constrained pure steel buckling-restrained brace as claimed in claim 3, further comprising a bolt group;
the right-angle side of the cross-shaped core material is connected with the two first side plates which are abutted against the right-angle side of the cross-shaped core material through the bolt group; the right-angle side of the cross-shaped core material is connected with the two bottom plates which are abutted against the right-angle side of the cross-shaped core material through the bolt group.
5. The fabricated beam-column joint-constrained pure steel buckling-restrained brace as claimed in claim 4, wherein the top plate and the second side plate are provided with through holes.
6. The fabricated beam-column joint-constrained pure steel buckling-restrained brace as claimed in claim 4, wherein the bolt set comprises a bolt, a gasket, a nut and a nut;
the bolt is in threaded connection with the nut, a plurality of first bulges are arranged on one side of the gasket along the circumferential direction, a second bulge is arranged between every two adjacent first bulges, the first bulges extend along the radial direction of the gasket, and the second bulges extend along the circumferential direction of the gasket;
one end of the nut is provided with a plurality of first grooves along the circumferential direction, and the nut and the gasket are assembled with the first bulges through the first grooves;
the nut is sleeved with the nut, one end of the nut is provided with a plurality of second grooves along the circumferential direction, and a third groove is arranged between every two adjacent second grooves;
the nut and the gasket are assembled through the second groove and the first protrusion and the third groove and the second protrusion.
7. The fabricated beam-column node-constrained pure steel buckling-restrained brace as claimed in claim 1, further comprising beam-column node-constrained steel pipes and connecting plates;
the connecting plates are arranged at two ends of the cross-shaped core material in a matched mode, the connecting plates are connected with the beam column node constraint steel pipes in a one-to-one corresponding mode, and the beam column node constraint steel pipes are used for being wrapped at beam column nodes.
8. The fabricated beam-column node-constrained pure steel buckling-restrained energy-dissipation brace as claimed in claim 1, wherein the energy-dissipation gasket is of a cross-shaped structure, and four angle steels are correspondingly arranged at four right angles of the energy-dissipation gasket one by one.
9. The fabricated beam-column joint constrained pure steel buckling-restrained brace as claimed in claim 1, wherein the yield strength of the angle steel is smaller than that of the C-shaped constraining member.
10. The fabricated beam-column joint constrained pure steel buckling-restrained brace as claimed in claim 9, wherein the yield strength of the angle steel is 345MPa or 235 MPa; the yield strength of the C-shaped constraint component is greater than or equal to 420 MPa.
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| CN202111198810.9A CN113944358A (en) | 2021-10-14 | 2021-10-14 | Assembled beam-column node constraint type pure steel buckling-restrained energy-dissipation brace |
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| CN202111198810.9A CN113944358A (en) | 2021-10-14 | 2021-10-14 | Assembled beam-column node constraint type pure steel buckling-restrained energy-dissipation brace |
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Application publication date: 20220118 |