CN106677585B - A kind of casing buckling induction support with elongated degree pineapple type induction unit - Google Patents
A kind of casing buckling induction support with elongated degree pineapple type induction unit Download PDFInfo
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- CN106677585B CN106677585B CN201611029772.3A CN201611029772A CN106677585B CN 106677585 B CN106677585 B CN 106677585B CN 201611029772 A CN201611029772 A CN 201611029772A CN 106677585 B CN106677585 B CN 106677585B
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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 kind of casing bucklings with elongated degree pineapple type induction unit to induce support, it is made of end restraint section, buckling induction section, inner sleeve and outer tube, buckling induces section to be made of at least one elongated degree pineapple type induction unit along the axis direction of support, the end face positioned at the elongated degree pineapple type induction unit of buckling induction section two sides be by one perpendicular to axis direction and vertex the plane clipped of cross section；The single elongated degree pineapple type induction unit is circumferentially arranged successively by m identical elongated degree pineapple type subelements and forms the space body that a section is polygon.The present invention uses the casing buckling with elongated degree pineapple type induction unit to induce support, under small shake effect, the induction support of this buckling keeps elasticity, in middle shake or big shake effect, buckling induction section enters yielding stage, and good hysteretic energy performance can play the effect of damper again.
Description
Technical field
The invention belongs to building structure technology fields, more particularly to a kind of set with elongated degree pineapple type induction unit
Pipe buckling induction support, suitable for steel construction or concrete structure with buckling restrained brace.
Background technique
In steel construction or reinforced concrete structure use process, common support compression can generate buckling phenomenon, work as branch
After supportting compressive buckling, rigidity and bearing capacity are drastically reduced.Under earthquake or wind action, the internal force of support is being pressurized and tension two
Back and forth change under kind state.When support gradually fades to tension state by the state of buckling, the internal force and rigidity of support are close to
Zero.Thus common support Hysteresis Behavior under course under cyclic loading is poor.To solve common support compressive buckling and hysteresis
The problem of energy difference, is arranged casing outside support, constrains the compressive buckling of support, constitutes buckling-restrained.Buckling restrained brace is only
Core plate is connect with other components, and suffered load is all undertaken by core plate, and outer sleeve and packing material only constrain core plate by lateral deflection
Song makes core plate can enter surrender in tension and by pressure, thus, the Hysteresis Behavior of buckling restrained brace is excellent.It is buckling-restrained
Support on the one hand can be to avoid the defect of common support tension and compression bearing capacity significant difference, on the other hand with the consumption of metal damper
Energy ability, can serve as " fuse ", so that main structure is substantially in elastic range in the structure.Therefore, buckling-restrained
The application of support can improve anti-seismic performance of traditional braced frame under middle shake and big shake comprehensively.
Applicant proposes a kind of buckling control of the end with duplex pyramid type energy consumption unit on June 1st, 2016
The buckling for supporting (application No. is 201610380805.2) and a kind of end to have staggeredly pyramid energy consumption unit controls support
The basic energy consumption unit of (application No. is 201610384216.1) is pyramid, pyramid energy consumption unit be it is non-rigid can
Exhibition；So buckling control support is larger by the difficulty of high-order buckling mode energy consumption.Applicant proposes one on June 1st, 2016
Kind end has the energy-dissipating type buckling restrained brace (application No. is 201610383430.5) and one kind of symmetrical initial imperfection unit
It is fixed that end, which has the geometric configuration of the buckling control support (application No. is 201610380804.8) of brilliant energy consumption unit,
, design flexibility is small.And consume energy in above-mentioned support unit thickness, construction of plate etc. at the folding line are consistent at non-folding line, no
Conducive to the generation plastic hinge at folding line.In addition, these supports are made of end restraint section, buckling section and casing, casing is in buckling
The outside of section, and do not supported on the inside of buckling section, it is easy to produce low order unstability inwardly, to weaken the energy consumption energy of support
Power.
Summary of the invention
Goal of the invention：Since existing buckling restrained brace is under course under cyclic loading, it is connected with buckling restrained brace
Component or joints are larger；And under geological process, existing buckling restrained brace yield deformation position has randomness, in order to
Overcome the problems, such as of the existing technology, the present invention will introduce on elongated degree pineapple type induction unit to traditional common support, shape
Support is induced at a kind of casing buckling with elongated degree pineapple type induction unit, is when selecting anti-buckling support in engineering structure
Preferential selection.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：
A kind of casing buckling induction support with elongated degree pineapple type induction unit, is induced by end restraint section, buckling
Section, inner sleeve and outer tube composition, the end restraint section are located at the both ends of buckling induction section, the buckling induction section folder
Between inner sleeve and outer tube, the inner sleeve is connect with an end restraint section respectively with outer tube, it is characterised in that：It bends
Song induction section is made of at least one elongated degree pineapple type induction unit along the axis direction of support, is located at the buckling and is induced
Section two sides elongated degree pineapple type induction unit end face be by one perpendicular to axis direction and cross vertex cross section clip
Plane；The single elongated degree pineapple type induction unit is circumferentially successively arranged by m identical elongated degree pineapple type subelements
Column form the space body that a section is polygon, and the number of edges of the polygon is 2m, and m is the integer more than or equal to 2；The change
Length pineapple type subelement is made of six triangular plates in the same plane by folding the space body formed, six triangles
Shape plate is conllinear two-by-two and intersects at a vertex, according to be respectively counterclockwise triangular plate one, triangular plate two, triangular plate three,
Triangular plate four, triangular plate five and triangular plate six, wherein the common edge between them is respectively the first common edge, the second public affairs
Side, third common edge, the 4th common edge, the 5th common edge and the 6th common edge altogether；First common edge and the 4th common edge
For crest line, the second common edge, third common edge, the 5th common edge and the 6th common edge are valley line；The outward folding refers to phase
Angle between the exterior normal of adjacent triangular plate becomes larger, and the folder between the exterior normal for referring to adjacent triangular plate is folded inward
Angle becomes smaller；The sum of length of first common edge and the 4th common edge and elongated degree pineapple type subelement intermediate cam shape plate three
Free margins is unequal, the free margins of elongated degree pineapple type subelement intermediate cam shape plate three and elongated degree pineapple type subelement intermediate cam
The free margins of shape plate six is equal；The free margins of the triangular plate four of elongated degree pineapple type subelement in buckling induction section with
The free margins of the triangular plate one of axially adjacent elongated degree pineapple type subelement is overlapped, and the three of elongated degree pineapple type subelement
The free margins of angular plate five is overlapped with the free margins of the triangular plate two of axially adjacent elongated degree pineapple type subelement.
The end restraint section is made of the connecting plate that the components such as square plate, the short girder steel of T-type and beam column are reserved, square bar
Plate is welded on buckling induction section end, and two short girder steels of T-type and square plate are welded to connect, and connecting plate is clipped in two short steel of T-type
Among beam, connecting plate is connect with the short girder steel of T-type with high-strength bolt.
The left end of the inner sleeve and the square plate of left end confinement section are welded to connect, the right end of inner sleeve and right side
The square plate of end restraint section has one section of 1/40 distance not less than buckling induction segment length；The right end of the outer tube with
The square plate of right-hand end confinement section is welded to connect, and the left end of outer tube and the square plate of left end confinement section have one section
Not less than 1/40 distance of buckling induction segment length；Gap between the buckling induction section and inner sleeve and outer tube does not surpass
Cross 5mm；The inner sleeve and outer tube are all made of the hollow steel pipe of circular cross-section.
Plate thickness in the buckling induction section at all folding lines is the half of plate plate thickness, and the folding line being made of crest line is thick
Degree variation is in inner surface side, and the folding line being made of valley line, thickness change is in outer surface side.
Beneficial effect：
A kind of casing buckling with elongated degree pineapple type induction unit of the present invention induces support, by end restraint section, bends
Song induction section, inner sleeve and outer tube are constituted.Have in the elongated degree pineapple type induction unit used in buckling induction section a plurality of
Folding line, can dissipate more energy.Elongated degree pineapple type induction unit not only shortens in length direction in deformation process, and
And the diameter of its cross section is also reducing, and so as to limit the low order buckling mode of support, keeps its plasticity more abundant, increases
The energy dissipation capacity of support.In addition, the sum of length of elongated the first common edge for spending pineapple type subelement and the 4th common edge and change
The length of one free margins of length pineapple type subelement is unequal, makes to be supported in loading process and is more easier to generate axial change
Shape, to prevent support from complete buckling occurs to early.Simultaneously plate thickness is reduced to original half at folding line, is more easier to lure
It leads and is supported under geological process, generate high-order buckling mode, promote the energy dissipation capacity of support.The outside difference in buckling induction section
Inner sleeve and outer tube, which is arranged, makes the yield line at folding line expand as plastic zone, has preferably energy consumption energy than common support
Power.And internal and external casing can also induce folding line in section to provide lateral support to buckling, effectively improve the axial carrying of support
Ability.The present invention can only need the built-in fitting for using the components such as bolt and beam column to connect, both ensure that in factory process to scene
Component quality, and reduce the wet construction workload at scene, energy conservation and environmental protection.Casing with elongated degree pineapple type induction unit is bent
Song induction support had both had many advantages, such as the flexible arrangement of generally anti-buckling support, and can more effectively dissipate seismic energy, and can be with
The problems such as solving the component or larger joints that are connected with buckling restrained brace has good Popularizing of A.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the sectional view (main view) of structure of the invention；
Fig. 3 is end restraint section schematic diagram；
Fig. 4 is that buckling induces section schematic diagram；
Fig. 5 is inner sleeve schematic diagram；
Fig. 6 is outer tube schematic diagram；
Fig. 7 is A-A profile in Fig. 2；
Fig. 8 is square plate schematic diagram；
Fig. 9 is the short girder steel schematic diagram of T-type；
Figure 10 is connecting plate schematic diagram；
Figure 11 is that elongated degree pineapple type induces cell schematics；
Figure 12 is elongated degree pineapple type subelement schematic diagram；
Figure 13 is that elongated degree pineapple type subelement folds frontal plane schematic diagram；
Figure 14 is crest line plate thickness schematic diagram at folding line；
Figure 15 is valley line plate thickness schematic diagram at folding line.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, 2, it is made of end restraint section 1, buckling induction section 2, inner sleeve 3 and outer tube 4.End restraint section
1 is fixed on the both ends of buckling induction section 2.The left end of inner sleeve and the square plate 5 of left end confinement section 1 are welded to connect, interior
The right end of casing and the square plate of right-hand end confinement section have a distance, 1/ of distance not less than buckling induction segment length
40；The right end of outer tube and the square plate 5 of right-hand end confinement section 1 are welded to connect, and the left end of outer tube and left end are about
The square plate of beam section has a distance, 1/40 of distance nor less than buckling induction segment length.As shown in Fig. 5~7, buckling is lured
Section 2 to be led to be clipped between inner sleeve 3 and outer tube 4, buckling induces the gap between section and inner sleeve and outer tube to be no more than 5mm,
Inner sleeve 3 and outer tube 4 are all made of the hollow steel pipe of circular cross-section.
As shown in figure 3, the connecting plate 7 that end restraint section 1 is reserved by components such as square plate 5, the short girder steel 6 of T-type and beam columns
Composition, square plate 5 are welded on buckling induction 2 end of section, and the short girder steel 6 of two T-types is welded to connect with square plate 5, square bar
Plate 5 and the short girder steel 6 of T-type are respectively as shown in Fig. 8,9.Connecting plate 7 is clipped among the short girder steel 6 of two T-types, connecting plate 7 and the short steel of T-type
Beam 6 is connected with high-strength bolt, and wherein connecting plate 7 is as shown in Figure 10.
According to Fig.4, buckling induction section 2 is by 20 elongated degree pineapple type induction units 8 along the axis direction of support
Composition clips the end toothed segment part of buckling induction section 2 by one perpendicular to the cross section of axis direction and a vertex 28 excessively,
Then buckling induces all sides in section end in the same plane.The free margins 26 of the triangular plate four of elongated degree pineapple type subelement 9
It is overlapped with the free margins 24 of the triangular plate one of axially adjacent elongated degree pineapple type subelement 9, elongated degree pineapple type is single
The freedom of the triangular plate two of the free margins 27 of the triangular plate five of member 9 and axially adjacent elongated degree pineapple type subelement 9
Side 25 is overlapped.In Figure 11, single elongated degree pineapple type induction unit 8 is by six identical elongated degree pineapple type subelements 9
Circumferentially being arranged successively the section to be formed is dodecagonal space body.According to Figure 12, Figure 13, elongated degree pineapple type
Subelement 9 is made of six isosceles triangle plates in the same plane by folding the space body formed, six triangular plates
It is conllinear two-by-two and intersect at a vertex, according to being counterclockwise respectively triangular plate 1, triangular plate 2 11, triangular plate three
12, triangular plate 4 13, triangular plate 5 14 and triangular plate 6 15, wherein the common edge between them is respectively first public
Side 16, the second common edge 17, third common edge 18, the 4th common edge 19, the 5th common edge 20 and the 6th common edge 21.Described
First common edge 16 and the 4th common edge 19 are crest line, the second common edge 17, third common edge 18, the 5th common edge 20 and the 6th
Common edge 21 is valley line；The angle being foldable outwardly between the exterior normal for referring to adjacent triangular plate becomes larger, and is folded inward
Refer to that the angle between the exterior normal of adjacent triangular plate becomes smaller.The length of first common edge 16 and the 4th common edge 19
The free margins 22 of the sum of degree and elongated degree pineapple type subelement is unequal, the elongated degree free margins 22 of pineapple type subelement and elongated
The free margins 23 for spending pineapple type subelement is equal.
Plate thickness (d/2) in buckling induction section 2 at all folding lines is the half of plate plate thickness d, the folding line being made of crest line,
Thickness change is in inner surface side, and the folding line being made of valley line, thickness change is in outer surface side.Crest line valley line office at folding line
Portion amplifies as shown in Figure 14, Figure 15, and letter A indicates that side is outer surface side in figure, and letter b indicates that side is inner surface one
Side.
Claims (3)
1. a kind of casing buckling with elongated degree pineapple type induction unit induces support, by end restraint section（1）, buckling induction
Section（2）, inner sleeve（3）And outer tube（4）Composition, the end restraint section（1）Section is induced positioned at the buckling（2）Both ends,
The buckling induces section（2）It is clipped in inner sleeve（3）With outer tube（4）Between, the inner sleeve and outer tube are held with one respectively
The connection of portion's confinement section, it is characterised in that：Buckling induces section（2）Unit is induced by least one elongated degree pineapple type（8）Along branch
The axis direction of support forms, and is located at the buckling and induces section（2）The elongated degree pineapple type of two sides induces unit（8）End face be logical
One is crossed perpendicular to axis direction and crosses the plane clipped the cross section on vertex；The single elongated degree pineapple type induces unit（8）
By m identical elongated degree pineapple type subelements（9）Circumferentially it is arranged successively the space body to form that a section is polygon, institute
The number of edges for stating polygon is 2m, and m is the integer more than or equal to 2；The elongated degree pineapple type subelement（9）By in the same plane
Six triangular plates by folding the space body formed composition, six triangular plates are conllinear two-by-two and intersect at a vertex, press
According to respectively triangular plate one counterclockwise（10）, triangular plate two（11）, triangular plate three（12）, triangular plate four（13）, three
Angular plate five（14）With triangular plate six（15）, wherein the common edge between them is respectively the first common edge（16）, it is second public
Side altogether（17）, third common edge（18）, the 4th common edge（19）, the 5th common edge（20）With the 6th common edge（21）, described
First common edge（16）With the 4th common edge（19）For crest line, the second common edge（17）, third common edge（18）, the 5th common edge
（20）With the 6th common edge（21）For valley line；Adjacent plate is foldable outwardly along crest line, is folded inward along valley line；It is described to
Outer folding refers to that the angle between the exterior normal of adjacent triangular plate becomes larger, and is folded inward and refers to the outer of adjacent triangular plate
Angle between normal becomes smaller；First common edge（16）With the 4th common edge（19）The sum of length and elongated degree pineapple type
The free margins of the triangular plate three of subelement（22）It is unequal, the free margins of the triangular plate three of elongated degree pineapple type subelement
（22）With the free margins of the triangular plate six of elongated degree pineapple type subelement（23）It is equal；The elongated degree pineapple type subelement
（9）Triangular plate four free margins（26）With axially adjacent elongated degree pineapple type subelement（9）Triangular plate one
Free margins（24）It is overlapped, elongated degree pineapple type subelement（9）Triangular plate five free margins（27）With axially adjacent change
Length pineapple type subelement（9）Triangular plate two free margins（25）It is overlapped；The inner sleeve（3）Left end and left end
Confinement section（1）Square plate（5）It is welded to connect, inner sleeve（3）Right end and right-hand end confinement section square plate（5）Have
One section induces section not less than buckling（2）1/40 distance of length；The outer tube（4）Right end and right-hand end confinement section
（1）Square plate（5）It is welded to connect, outer tube（4）Left end and left end confinement section square plate（5）Have one section not
Less than 1/40 distance of buckling induction segment length；The buckling induces section（2）With inner sleeve（3）And outer tube（4）Between
Gap is no more than 5mm；The inner sleeve（3）And outer tube（4）All it is made of the hollow steel pipe of circular cross-section.
2. the casing buckling according to claim 1 with elongated degree pineapple type induction unit induces support, feature exists
In：The end restraint section（1）By square plate（5）, the short girder steel of T-type（6）The connecting plate reserved with components such as beam columns（7）Group
At square plate（5）It is welded on buckling induction section（2）End, two short girder steels of T-type（6）With square plate（5）It is welded to connect,
Connecting plate（7）It is clipped in two short girder steels of T-type（6）Centre, connecting plate（7）With the short girder steel of T-type（6）It is connected with high-strength bolt.
3. the casing buckling according to claim 2 with elongated degree pineapple type induction unit induces support, feature exists
In：The buckling induces section（2）In plate thickness at all folding lines be plate plate thickness half, the folding line being made of crest line, thickness
Variation is in inner surface side, and the folding line being made of valley line, thickness change is in outer surface side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029772.3A CN106677585B (en) | 2016-11-15 | 2016-11-15 | A kind of casing buckling induction support with elongated degree pineapple type induction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029772.3A CN106677585B (en) | 2016-11-15 | 2016-11-15 | A kind of casing buckling induction support with elongated degree pineapple type induction unit |
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| Publication Number | Publication Date |
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| CN106677585A CN106677585A (en) | 2017-05-17 |
| CN106677585B true CN106677585B (en) | 2018-11-23 |
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| CN201611029772.3A Active CN106677585B (en) | 2016-11-15 | 2016-11-15 | A kind of casing buckling induction support with elongated degree pineapple type induction unit |
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| CN107965066B (en) * | 2017-11-14 | 2019-07-30 | 东南大学 | A kind of induced damage Observable energy consumption bar |
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| TW201619475A (en) * | 2014-11-28 | 2016-06-01 | 江文財 | Assembly buckling restrained brace using steel bar |
| CN105888348A (en) * | 2016-06-01 | 2016-08-24 | 东南大学 | Buckling control support with diamond type energy dissipation units at ends |
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2016
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| CN102605873A (en) * | 2012-03-22 | 2012-07-25 | 北京工业大学 | Buckling restrained brace with energy dissipation device sandwiched with lead layer and provided with steel plates at two ends and method for manufacturing buckling restrained brace |
| TW201619475A (en) * | 2014-11-28 | 2016-06-01 | 江文財 | Assembly buckling restrained brace using steel bar |
| CN105544763A (en) * | 2016-01-15 | 2016-05-04 | 东南大学 | Internal and external double-sleeve restraining folded steel plate energy-consuming support |
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Application publication date: 20170517 Assignee: China Energy Construction Group Jiangsu Electric Power Design Institute Co.,Ltd. Assignor: SOUTHEAST University Contract record no.: X2021980000320 Denomination of invention: Buckling induced brace with variable length pineapple shaped induced element for casing Granted publication date: 20181123 License type: Common License Record date: 20210113 |