CN111441495A - Ultra-long buckling restrained brace adopting sliding connection sleeve and manufacturing method thereof - Google Patents
Ultra-long buckling restrained brace adopting sliding connection sleeve and manufacturing method thereof Download PDFInfo
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- CN111441495A CN111441495A CN202010334888.8A CN202010334888A CN111441495A CN 111441495 A CN111441495 A CN 111441495A CN 202010334888 A CN202010334888 A CN 202010334888A CN 111441495 A CN111441495 A CN 111441495A
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- 238000005265 energy consumption Methods 0.000 claims abstract description 33
- 230000000452 restraining effect Effects 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 69
- 239000010959 steel Substances 0.000 claims description 69
- 238000003466 welding Methods 0.000 claims description 36
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- 239000002783 friction material Substances 0.000 claims description 11
- 229920005549 butyl rubber Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
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- 238000000034 method Methods 0.000 claims description 3
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- 238000010586 diagram Methods 0.000 description 7
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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 provides a buckling restrained brace adopting a sliding connection sleeve, which comprises a plurality of buckling restrained brace short components, wherein each buckling restrained brace short component comprises a core material and a restraining component, the core material is positioned in the restraining component, the core material comprises an energy consumption section positioned in the middle and two energy consumption core material amplification connectors positioned at two ends of the energy consumption section, two adjacent buckling restrained brace short components are respectively spliced with the energy consumption core material amplification connectors through the matching of the sliding connection sleeve and the energy consumption core material amplification connectors, a slotted hole is formed in the sliding connection sleeve, and the energy consumption core material amplification connectors are spliced with the sliding connection sleeve through the slotted holes and are welded and fixed. And also provides a manufacturing method for manufacturing the buckling restrained brace adopting the sliding connection sleeve. The invention has the advantages of small friction effect of the energy-consuming core material, uniform stress and deformation along the length of the support, strong plastic deformation capability, energy-consuming capability and low-cycle fatigue performance, convenient transportation, simple and convenient construction and the like.
Description
Technical Field
The invention belongs to the technical field of energy dissipation and shock absorption of building structures, and particularly relates to an overlong buckling restrained brace adopting a sliding connection sleeve and used in large-span and high-rise buildings and a manufacturing method thereof.
Background
The buckling restrained brace is a high-efficiency energy dissipation and shock absorption device which yields but does not bend when being pressed, and the basic structure of the buckling restrained brace is composed of an energy dissipation core material (steel) and a restraining component (steel pipe concrete and the like) (as shown in figure 1). By the hoop effect of the constraint component, the energy dissipation core material can be pulled and pressed to achieve full-section yielding dissipation seismic energy, structural seismic damage is reduced, and the energy dissipation core material is widely applied to multi-high-rise and large-span buildings at present, so that the seismic performance and the collapse prevention capability of the building structure are improved.
The energy dissipation core material and the constraint component of the buckling constraint support are generally formed by cutting a hot-rolled steel plate or section steel into short plate pieces or short components and then welding and assembling the short plate pieces or the short components (as shown in fig. 1). Due to the length limitation of the steel plates and the section steel, the longest length of the buckling restrained brace can be limited within 10 meters. However, with the rapid development of modern buildings, super high-rise and large-span structures are increasing, and the improvement of the lateral stiffness and the seismic performance of the structures by adopting the buckling restrained braces is the most effective technical means, but a new challenge is also provided for the production and the manufacture of the buckling restrained braces. Such as Tianjin high silver 117 mansion (super high-rise structure), the adopted buckling restrained brace has a length of up to 48 meters.
In order to manufacture the ultra-long buckling restrained brace (10-50 m) meeting the functional requirements of buildings and structures, the traditional technical means adopts a welding and splicing mode (as shown in fig. 2 and 3), and a multi-section energy-consuming core material (< 10 m) and a multi-section restraining component (< 10 m) are respectively assembled into the ultra-long energy-consuming core material and the ultra-long restraining component through splicing. This conventional technique has the following problems:
(1) friction locking problem caused by friction force between energy dissipation core material and constraint component
The energy dissipation principle of the buckling restrained brace is realized by utilizing the tension-compression plastic deformation of the energy dissipation core material relative to the restraining unit. The ideal energy dissipation mechanism is that each section of the energy dissipation core material is simultaneously subjected to yielding along the length direction, so that the seismic energy is consumed to the maximum extent. However, since the energy dissipation core material and the constraint member are in contact with each other, high-order bending deformation (as shown in fig. 4) is generated when the energy dissipation core material is pressed, so that a friction force is necessarily generated at a peak position when the energy dissipation core material and the constraint member perform relative axial movement, and a phenomenon of end concentration (i.e., a friction locking phenomenon) of "large ends and small middle parts" occurs in the axial force and deformation of the energy dissipation core material, and the phenomenon is more remarkable as the support length is longer.
Previous researches show that although a welding and splicing scheme can solve the problem of manufacturing an ultra-long support caused by the limitation of the length of a steel plate or a section, the friction locking phenomenon caused by the problem can cause that two ends of an energy-consuming core material bear overlarge axial force and overlarge plastic deformation to firstly break and destroy, the stress and deformation of the middle energy-consuming core material are reduced, the middle energy-consuming core material cannot enter a yield energy-consuming state, an optimal energy-consuming mechanism that the energy-consuming core material uniformly deforms along the whole length and yields along the whole length cannot be realized, and the deformation and energy-consuming capacity of a buckling restrained support are remarkably reduced. Research shows that the friction locking phenomenon can be obviously relieved when the support length is within 5 meters, but the short support member cannot adapt to the new requirements of large-span and super high-rise buildings on the ultra-long buckling restrained brace all the time.
(2) The problem of early fracture of core material caused by welding heat influence
Because the energy-consuming core materials are spliced by adopting the welding seams, if the welding position is close to an energy-consuming area, the deformation capability and the energy-consuming capability of the core materials can be obviously reduced by a heat affected zone, welding defects and residual stress caused by welding. Therefore, compared with the conventional buckling restrained brace, the overlong buckling restrained brace is more prone to fatigue fracture in an earthquake, loses the earthquake protection effect on the building structure and provides a new challenge to the earthquake resistance of the building structure.
In conclusion, the application of the large-span and super high-rise building provides new requirements for the super-long buckling restrained brace, and provides new challenges for the production, the manufacture and the anti-seismic performance of the super-long buckling restrained brace, the adoption of the existing welding and splicing technology cannot ensure that the brace normally plays the energy consumption role under the super-long condition, and serious hidden dangers are caused to the safety burying of the large public building under the super-large earthquake.
Disclosure of Invention
The invention provides a buckling restrained brace adopting a sliding connection sleeve and a manufacturing method thereof, aiming at solving the problems of friction locking, deformation concentration and premature breakage of a core material caused by directly adopting welding splicing in the traditional ultra-long buckling restrained brace technology.
In order to solve the technical problem, the invention provides an ultra-long buckling restrained brace adopting a sliding connection sleeve, which comprises a plurality of buckling restrained brace short components,
the buckling restrained brace short members comprise core materials and restrained members, the core materials are positioned in the restrained members, the core materials comprise energy dissipation sections positioned in the middle and two energy dissipation core material amplification connectors positioned at two ends of the energy dissipation sections,
equally divide between two adjacent bucking restraint brace short component and do not splice through the cooperation of the connecting sleeve that slides and the power consumption core enlargies the connector, seted up slotted hole on the connecting sleeve that slides, the power consumption core enlargies the connector and pegs graft through slotted hole and the connecting sleeve that slides to welded fastening.
Furthermore, the restraining component is square, the cross section of the energy dissipation core material amplifying connector is in a cross shape,
the sliding connecting sleeve comprises four steel plates, wherein the four steel plates are all provided with the groove-shaped holes and the four steel plates, the steel plates are fixedly connected with two adjacent steel plates in a mutually perpendicular mode to form a sleeve, the inner wall of the sliding connecting sleeve is attached to the outer wall of the restraining component, and the inner walls at the two ends of each sliding connecting sleeve are respectively lapped on the outer wall of the restraining component of the two adjacent buckling restraining support short components.
Further, the overlap length between each end of the slip connection sleeve and the constraint component is not less than the larger value of 1.5 times of the maximum size in the width and height of the outer contour of the constraint component and 2 times of the relative deformation amount between the two. The arrangement can realize continuous bending rigidity of two adjacent constraint components, and improve the bending bearing capacity of the energy-consuming core material amplification connector.
Further, a low friction material is arranged between the slip connection sleeve and the overlapped constraint component. So configured, the adjacent constraining member is allowed to slide axially relative to the slip joint sleeve.
Furthermore, the low-friction material is butyl rubber, the thickness of the low-friction material is 0.5mm, and the dynamic friction coefficient is not more than 0.05.
Furthermore, the width dimension of the four steel plates is 1-2mm smaller than the width and height dimension of the outer contour of the restraining unit, and the thickness of the four steel plates is not smaller than the thickness of the steel pipe of the restraining component.
Further, the length of the groove-shaped hole is 3mm larger than the total length of the two energy-consumption core material amplification connectors at the joint of the two adjacent buckling restrained brace short members, and the width of the groove-shaped hole is 3mm larger than the thickness of the groove-shaped hole part inserted into the energy-consumption core material amplification connectors. Due to the arrangement, the slot-shaped hole can be conveniently connected with the energy-consuming core material amplifying connector in an inserting manner.
Furthermore, the cross-sectional area of the energy consumption core material amplification connector is 2 times of the cross-sectional area of the energy consumption section. The arrangement can move the welding and fixing work of the two opposite energy dissipation core materials in the two adjacent buckling restrained brace short members from the energy dissipation area to the elastic area, and the adverse effect of the welding heat influence area on the anti-seismic performance of the energy dissipation area is reduced.
The invention also provides a manufacturing method of the overlong buckling restrained brace by adopting the sliding connection sleeve, which comprises the following steps:
processing and manufacturing a plurality of buckling restrained brace short members by adopting a core material, a filling material and a restraining member;
welding two opposite energy-consuming core material amplifying connectors in two adjacent buckling-restrained brace short components by using equal-strength butt welding, so that the two adjacent buckling-restrained brace short components are connected into a whole, and ensuring that the two buckling-restrained brace short components are on the same axis during welding;
polishing the lapping area of the sliding connection sleeve and the constraint component smoothly, and sticking a butyl rubber low-friction material with the thickness of 0.5.mm on the lapping area of the constraint component;
cutting four steel plates with the same size, slotting a hole on each steel plate, wherein the width dimension of the slotted hole is 1-2mm smaller than the width and height dimension of the outer contour of the constraint component, the thickness of each steel plate is not less than the thickness of the steel pipe of the constraint component, and inserting two opposite energy-consuming core material amplifying connectors in two adjacent buckling constraint support short components;
and positioning the four steel plates of the sliding connection sleeve, clamping the four steel plates with the constraint component, connecting the four steel plates into a sleeve through corner welding seams of adjacent steel plates, and finally performing plug welding at the joint of each slot-shaped hole and the energy-consuming core material amplification connector.
Compared with the prior art, the invention has the following beneficial effects: the invention has the advantages of small friction effect of the energy-consuming core material, uniform stress and deformation along the length of the support, strong plastic deformation capability, energy-consuming capability and low-cycle fatigue performance, convenient transportation, simple and convenient construction and the like. The advantages of the invention are embodied in the following aspects:
(1) the traditional technology adopts a hard connection mode of welding and splicing the constraint components to integrate the constraint components, and relative deformation cannot be generated among multiple sections of constraint components. In contrast to the above-described manner of hard attachment,the invention provides a scheme for soft connection of a plurality of buckling restrained brace short members through the sliding connection sleeve, so that the adjacent restraining members can axially slide relative to the sliding connection sleeve, and the axial deformation restraint of the adjacent restraining members is effectively released. Therefore, the ultra-long buckling restrained brace is equivalent to an axial series system of a plurality of buckling restrained brace short members, and axial deformation can be uniformly dispersed into each buckling restrained brace short member (the total deformation of the ultra-long buckling restrained brace is as follows)The deformation distributed to each buckling-restrained brace short member is/n) The problem of stress and deformation concentration caused by the traditional welding and splicing technology is solved.
(2) The traditional hard connection method integrates the constraint component through welding, so that the friction effect of the energy dissipation core material depends on the total length of the constraint component. The invention adopts the sliding connection sleeve to disperse deformation to each buckling restrained brace short component, so that the friction effect of the energy-consuming core material only depends on the length of the restraining component of a single buckling restrained brace short component (reduced to 1/n of the original length), and the problem of friction locking of the traditional ultra-long buckling restrained brace is effectively solved.
(3) The energy dissipation core material can better realize uniform stress and uniform deformation along the length direction, and the deformation capability, the energy dissipation capability and the low-cycle fatigue performance of the ultra-long buckling restrained brace are obviously improved.
(4) The ultra-long buckling restrained brace comprises a plurality of buckling restrained brace short components, can be transported to a construction site after a single buckling restrained brace short component is processed in a factory, and then is connected into the ultra-long buckling restrained brace through the sliding connection sleeve to be installed on site, so that the problem of difficulty in transporting the ultra-long buckling restrained brace is solved.
(5) The sliding connecting sleeve is attached to the outer surfaces of the two adjacent constraint components, the distance from the sleeve to the supporting axis is increased, the bending connection rigidity between the adjacent constraint components is improved, and the overall stability of the ultra-long buckling constraint support is improved.
(6) The sliding connecting sleeve is formed by welding four steel plates and is directly plug-welded with the energy dissipation core material amplification connector in an inserted mode, the bending rigidity is high, concrete does not need to be poured into the sliding connecting sleeve, the structure is simple, and construction is simple and convenient.
Drawings
The invention is further described with reference to the following figures and detailed description:
FIG. 1 is a three-dimensional schematic view of a manufacturing process of a conventional buckling restrained brace short component;
FIG. 2 is a three-dimensional schematic view of a conventional manufacturing process of an ultra-long buckling restrained brace;
FIG. 3 is a schematic front and top view of a conventional ultra-long buckling restrained brace;
fig. 4 is a schematic diagram of deformation and friction force transmission of an energy dissipation core material of a conventional ultra-long buckling restrained brace;
FIG. 5 is an assembly schematic diagram of an ultra-long buckling restrained brace butt joint using a sliding connection sleeve;
FIG. 6 is a schematic plan view of an ultra-long buckling restrained brace employing a slip joint sleeve;
FIG. 7 is a cross-sectional view of the docked position of FIG. 6;
FIG. 8 is a plan view of the component steel plates of the slip joint sleeve;
FIG. 9 is a three-dimensional schematic view of a node after splicing of an ultra-long buckling restrained brace using a sliding connection sleeve.
In the figure: 1-a core material; 2-a restraining member; 3-a filler material; 4-energy dissipation core material amplification connector; 5-a stiffening rib; 6-equal strength butt welding; 7-a foam material; 8-1-a steel plate for sliding connection of the sleeve; 8-2-forming a steel plate slot-shaped hole; 9-butyl rubber; 10-fillet weld; 11-plug weld.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.
Example 1
The invention provides an ultra-long buckling restrained brace adopting a sliding connection sleeve and a manufacturing method thereof, wherein fig. 5 is an assembly schematic diagram of a butt joint node of the ultra-long energy-consuming buckling restrained brace adopting the sliding connection sleeve, fig. 6 is a butt joint plane schematic diagram formed by a plurality of nodes after the nodes are in butt joint in fig. 5, fig. 7 is a section diagram at a welding line 6 in fig. 6, fig. 8 is a schematic diagram of a steel plate formed by the sliding connection sleeve, and fig. 9 is a three-dimensional schematic diagram of a spliced node after the steel plate is assembled.
The ultra-long buckling-restrained brace adopting the sliding connection sleeve comprises a plurality of buckling-restrained brace short members, the length range of each buckling-restrained brace short member is not less than L and not more than 7 m, each buckling-restrained brace short member comprises a core material 1 and a restraining member 2, the core material 1 is located in the restraining member 2, filling materials 3 such as concrete are filled between the core material 1 and the restraining member 2 to play a role in restraining the core material, the core material is enabled to yield without buckling when being pressed, and the core material 1 comprises an energy consumption section located in the middle and two core material energy consumption amplification connectors 4 located at two ends of the energy consumption section.
The energy dissipation core material amplification connector 4 in the embodiment is a cross-shaped connector, and the cross section of the energy dissipation core material amplification connector is cross-shaped.
The restriction member 2 is square and may have a square or square cross-section, in this embodiment the cross-section of the restriction member is square.
Two adjacent buckling restrained brace short components are equally divided and are respectively spliced with the energy consumption core material amplification connector 4 through the matching of a sliding connecting sleeve 8, a groove-shaped hole 8-2 is formed in the middle of the sliding connecting sleeve 8, and the energy consumption core material amplification connector 4 is spliced with the sliding connecting sleeve 8 through the groove-shaped hole 8-2 and is fixed in a plug welding mode. Specifically, the sliding connection sleeve 8 comprises four steel plates 8-1, two adjacent steel plates in the four steel plates 8-1 are perpendicular to each other and are fixedly connected through fillet welds 10 to form a sleeve, the sliding connection sleeve 8 wraps the exposed energy-consumption core material amplification connector 4, four ends of the cross-shaped energy-consumption core material amplification connector 4 are respectively and correspondingly inserted into four slot holes 8-2 on the four steel plates 8-1, and the energy-consumption core material amplification connector 4 is firmly fixed in the slot holes in a plug welding mode, and the inner wall of the sliding connecting sleeve 8 is attached to the outer wall of the constraint component 2, the inner walls of the two ends of each sliding connecting sleeve 8 are respectively lapped on the outer walls of the constraint components 2 of the two adjacent buckling constraint support short components, and a low-friction material 9 is arranged between the sliding connecting sleeve 8 and the lapped constraint components 2 to allow the adjacent constraint components to axially slide relative to the connecting sleeve without friction.
In this embodiment, the low friction material is butyl rubber, the thickness is 0.5mm, and the coefficient of dynamic friction is not more than 0.05.
The width size of the four steel plates 8-1 is 1-2mm smaller than the width or height size of the outer contour of the constraint unit 2, and the thickness is not smaller than the thickness of the steel pipe of the constraint component 2. Namely: if the cross section of the constraint component 2 is square, the width dimension of the steel plate 8-1 is 1-2mm smaller than the width dimension of the outer contour of the constraint unit 2; if the cross section of the restriction member 2 is rectangular, two width dimensions of the steel plates 8-1 are provided, the width dimensions of two steel plates 8-1 are 1-2mm smaller than the width dimension of the outer contour of the restriction unit 2, and the width dimensions of the other two steel plates 8-1 are 1-2mm smaller than the height dimension of the outer contour of the restriction unit 2.
In the embodiment, the middle parts of four steel plates 8-1 of the sliding connection sleeve are respectively provided with a groove-shaped hole 8-2 along the length direction of the support, the length of each groove-shaped hole 8-2 is 3mm larger than the total length of two energy consumption core material amplification connectors 4 at the joint of two adjacent buckling restrained brace short components, the width of each groove-shaped hole is 3mm larger than the thickness of the part, inserted with the groove-shaped hole, of the energy consumption core material amplification connector 4, and the groove-shaped holes and the energy consumption core material amplification connectors can be conveniently inserted.
In the embodiment, the inner surface of the four steel plates 8-1 of the sliding connection sleeve 8 is attached to the outer surfaces of the two adjacent supporting constraint components 2 and is overlapped with the two adjacent constraint components 2, wherein the unilateral overlapping length is not less than the larger value of 1.5 times of the maximum size of the width and the height of the constraint components and 2 times of the relative deformation between the sliding connection sleeve 8 and the constraint components 2.
In this embodiment, a low friction material such as butyl rubber 9 is disposed between the sliding sleeve and the overlapped constraint member 2, which allows the adjacent constraint member to axially slide relative to the sleeve without friction.
In this embodiment, the cross-sectional area of the energy dissipation core material amplification connector is 2 times the cross-sectional area of the energy dissipation section.
Example 2
The embodiment provides a method for manufacturing an ultra-long buckling-restrained brace provided in embodiment 1, which specifically includes the following steps:
1. preparing a core material 1, a filling material 3 and a restraining member 2, and manufacturing a plurality of buckling restrained brace short members according to a traditional buckling restrained brace manufacturing method, wherein the length range of a single buckling restrained brace short member is not less than L and not more than 7 m;
2. welding two opposite energy-consuming core material amplifying connectors 4 in two adjacent buckling-restrained brace short components by using equal-strength butt welding, so that the two adjacent buckling-restrained brace short components are connected into a whole, and the two buckling-restrained brace short components are ensured to be on the same axis during welding;
3. polishing the lapping area of the sliding connecting sleeve 8 and the constraint component 2 smoothly, and sticking a butyl rubber low-friction material with the thickness of 0.5mm on the lapping area of the constraint component;
4. cutting four steel plates 8-1, forming a slotted hole 8-2 in the middle of each steel plate 8-1, wherein the length direction of the slotted hole is consistent with the length direction of the steel plates, the width dimension of each steel plate 8-1 is 1-2mm smaller than the width or height dimension of the outer contour of the constraint component 2, the thickness of each steel plate is not smaller than the thickness of the steel pipe of the constraint component, and each steel plate is respectively inserted with an energy consumption core material amplifying head through the slotted hole 8-2 formed in the steel plate;
5. positioning four steel plates of the sliding connection sleeve, clamping the four steel plates with the constraint component, connecting the four steel plates into a sleeve through corner welding seams of adjacent steel plates, and finally completing plug welding with the energy-consumption core material amplification connector at the groove-shaped hole of each steel plate;
6. and repeating the steps 2-5, and carrying out multiple butt joints among the supporting members.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides an adopt the overlength bucking restraint of connecting sleeve that slides to support which characterized in that: comprises a plurality of buckling restrained brace short components,
the buckling restrained brace short members comprise core materials (1) and restrained members (2), the core materials (1) are positioned in the restrained members (2), the core materials (1) comprise energy dissipation sections positioned in the middle and two energy dissipation core material amplification connectors (4) positioned at two ends of the energy dissipation sections,
the two adjacent buckling restrained brace short components are uniformly connected with the energy consumption core material amplification connector (4) in an inserting mode through the matching of the sliding connecting sleeve (8) and the energy consumption core material amplification connector, the sliding connecting sleeve (8) is provided with a groove-shaped hole (8-2), and the energy consumption core material amplification connector (4) is connected with the sliding connecting sleeve (8) in an inserting mode through the groove-shaped hole (8-2) and is fixed in a welding mode.
2. The ultra-long buckling restrained brace adopting the slippage connection sleeve as claimed in claim 1, wherein: the restraining component (2) is square, the cross section of the energy dissipation core material amplifying connector (4) is cross-shaped,
sliding connecting sleeve (8) includes four steel sheets (8-1), four all seted up on steel sheet (8-1) slotted hole (8-2), four adjacent two steel sheet mutually perpendicular fixed connection form the sleeve in steel sheet (8-1), and the inner wall of sliding connecting sleeve (8) pastes with the outer wall of constraining member (2) and leans on mutually, and the inner wall at every sliding connecting sleeve (8) both ends overlap joint respectively on the outer wall of two adjacent bucking constraint support short member's constraining member (2).
3. The ultra-long buckling restrained brace adopting the slippage connection sleeve as claimed in claim 2, wherein: the overlapping length between each end of the sliding connection sleeve (8) and the constraint component (2) is not less than the larger value of 1.5 times of the maximum size in the width and the height of the outer contour of the constraint component (2) and 2 times of the relative deformation amount between the two.
4. The ultra-long buckling restrained brace adopting the slippage connection sleeve as claimed in claim 2, wherein: and a low-friction material is arranged between the sliding connection sleeve and the overlapped constraint component.
5. The ultra-long buckling restrained brace adopting the slippage connection sleeve as claimed in claim 3, wherein: the low friction material is butyl rubber, the thickness is 0.5mm, and the dynamic friction coefficient is not more than 0.05.
6. The ultra-long buckling restrained brace adopting the slippage connection sleeve as claimed in claim 1, wherein: the width dimension of the four steel plates (8-1) is 1-2mm smaller than the width or height dimension of the outer contour of the constraint unit (2), and the thickness is not less than the thickness of the steel pipe of the constraint component (2).
7. The ultra-long buckling restrained brace adopting the slippage connection sleeve as claimed in claim 1, wherein: the length of the groove-shaped hole (8-2) is 3mm larger than the total length of two energy-consumption core material amplification connectors (4) at the joint of two adjacent buckling restrained brace short members, and the width of the groove-shaped hole is 3mm larger than the thickness of the part, inserted into the groove-shaped hole (8-2), of the energy-consumption core material amplification connector (4).
8. The ultra-long buckling restrained brace adopting the slippage connection sleeve as claimed in claim 1, wherein: the cross-sectional area of the energy consumption core material amplification connector is 2 times of the cross-sectional area of the energy consumption section.
9. The method for manufacturing the ultra-long buckling restrained brace by adopting the sliding connection sleeve according to any one of claims 1 to 6, is characterized by comprising the following steps:
processing and manufacturing a plurality of buckling restrained brace short members by adopting a core material (1), a filling material and a restraining member (2);
welding two opposite energy-consumption core material amplification connectors (4) in two adjacent buckling-restrained brace short components by using equal-strength butt welding to enable the two adjacent buckling-restrained brace short components to be connected into a whole, and ensuring that the two buckling-restrained brace short components are on the same axis during welding;
polishing the lapping area of the sliding connection sleeve (8) and the constraint component (2) smoothly, and sticking a butyl rubber low-friction material with the thickness of 0.5mm on the lapping area of the constraint component (2);
cutting four steel plates (8-1), slotting a hole (8-2) on each steel plate (8-1), wherein the width dimension of each steel plate (8-1) is 1-2mm smaller than the width and height dimension of the outer contour of the constraint component (2), the thickness of each steel plate (8-1) is not smaller than the thickness of a steel pipe of the constraint component, and inserting two opposite energy-consuming core material amplifying connectors (4) in two adjacent buckling constraint support short components;
and positioning the four steel plates of the sliding connection sleeve, clamping the four steel plates with the constraint component, connecting the four steel plates into the sleeve through corner welding seams of adjacent steel plates (8-1), and finally performing plug welding at the joint of each slot-shaped hole (8-2) and the energy-consumption core material amplification connector (4).
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| CN202010334888.8A CN111441495A (en) | 2020-04-24 | 2020-04-24 | Ultra-long buckling restrained brace adopting sliding connection sleeve and manufacturing method thereof |
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| CN111441495A true CN111441495A (en) | 2020-07-24 |
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