CN106836924B - A kind of casing buckling induction support with oblique pineapple type induction unit - Google Patents

A kind of casing buckling induction support with oblique pineapple type induction unit Download PDF

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Publication number
CN106836924B
CN106836924B CN201611030071.1A CN201611030071A CN106836924B CN 106836924 B CN106836924 B CN 106836924B CN 201611030071 A CN201611030071 A CN 201611030071A CN 106836924 B CN106836924 B CN 106836924B
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section
oblique
buckling
plate
triangular plate
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CN106836924A (en
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蔡建国
冯健
汪子哲
周宇航
柳杨青
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Southeast University
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Southeast University
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

Abstract

The invention discloses a kind of casing bucklings with oblique pineapple type induction unit to induce support, by end restraint section, buckling induces section, inner sleeve and outer tube composition, buckling induction section is clipped between inner sleeve and outer tube, inner sleeve is connect with an end restraint section respectively with outer tube, buckling induces section to be made of at least one oblique pineapple type induction unit along the axis direction of support, the oblique pineapple type induction unit is diagonally to be arranged successively to form the space body that a section is helix by m oblique pineapple type subelements, oblique pineapple type subelement is by six isosceles triangle plates in the same plane by folding the space body formed.Support is induced using the casing buckling with oblique pineapple type induction unit, 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

A kind of casing buckling induction support with oblique pineapple type induction unit
Technical field
The invention belongs to building structure technology fields, more particularly to a kind of casing with oblique pineapple type induction unit 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, composition is buckling-restrained, and 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 oblique pineapple type induction unit to traditional common support, be formed A kind of casing buckling induction support with oblique pineapple type induction unit, is when selecting constraining anti-buckling support in engineering structure Preferential selection.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
It is a kind of with oblique pineapple type induction unit casing buckling induce support, by end restraint section, buckling induction section, Inner sleeve and outer tube composition, the end restraint section are located at the both ends of buckling induction section, and the buckling induction section is clipped in 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: described Buckling induces section to be made of at least one oblique pineapple type induction unit along the axis direction of support, is located at the buckling and induces The end face of the oblique pineapple type induction unit of section two sides is by one perpendicular to axis direction and excessively oblique pineapple type subelement one The plane that the cross section on vertex is clipped;The oblique pineapple type induction unit be by m oblique pineapple type subelements diagonally according to Secondary arrangement forms the space body that a section is helix, and the helix is projected to from axial direction perpendicular to axis direction Number of edges on section is 2m-1, and m is the integer more than or equal to 2;Oblique pineapple type subelement is by six in the same plane Isosceles triangle plate is by folding the space body formed, and six triangular plates are conllinear two-by-two and intersect at a vertex, according to the inverse time Needle is respectively triangular plate one, triangular plate two, triangular plate three, triangular plate four, triangular plate five and triangular plate six, The common edge and triangular plate four of intermediate cam shape plate one and triangular plate two and the common edge of triangular plate five are crest line, triangle The common edge of plate two and triangular plate three, the common edge of triangular plate three and triangular plate four, triangular plate five and triangular plate The common edge of six common edge, triangular plate six and triangular plate one is valley line, and adjacent triangular plate is along crest line to being folded outward It is folded, it is folded inward along valley line;The angle being foldable outwardly between the exterior normal for referring to adjacent triangular plate becomes larger, inwardly The angle folded between the exterior normal for referring to adjacent triangular plate becomes smaller;The triangular plate four of the oblique pineapple type subelement Free margins be overlapped with the free margins of the triangular plate one of axially adjacent oblique pineapple type subelement, oblique pineapple type is single The free margins of the triangular plate five of member is overlapped with the free margins of the triangular plate two of axially adjacent oblique 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, rectangular Steel plate is welded on buckling induction section end, and two short girder steels of T-type and square plate are welded to connect, and it is short that connecting plate is clipped in two T-types Among girder steel, 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 is no more than 5mm;The inner sleeve and outer tube All it is 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.
The utility model has the advantages that
A kind of casing buckling with oblique pineapple type induction unit of the present invention induces support, by end restraint section, buckling Section, inner sleeve and outer tube is induced to constitute.There is a plurality of folding in the oblique pineapple type induction unit used in buckling induction support Trace, can dissipate more energy.Oblique pineapple type induction unit not only shortens in length direction in deformation process, Er Qieqi The diameter of cross section is also reducing, and so as to limit the low order buckling mode of support, keeps its plasticity more abundant, increases support Energy dissipation capacity.Simultaneously plate thickness is reduced to original half at folding line, is more easier induction and is supported under geological process, produce Raw high-order buckling mode, prevents component from complete buckling occurs to early.Inner sleeve and outer is respectively set in outside in buckling induction section Casing makes the yield line at folding line expand as plastic zone, has better energy dissipation capacity than common support.And internal and external casing Folding line in section can also be induced to provide lateral support to buckling, effectively improve the axial carrying capacity of support.The present invention can In factory process, only needs the built-in fitting for using the components such as bolt and beam column to connect to scene, not only ensure that component quality, but also reduce The wet construction workload at scene, energy conservation and environmental protection.Casing buckling induction support with oblique pineapple type induction unit had both had The flexible arrangement of the anti-buckling support of general restriction, can more effectively dissipate seismic energy the advantages that, and can solve with buckling about Bundle branch supports the problems such as component or larger joints being connected, and 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 oblique pineapple type induces cell schematics;
Figure 12 is oblique pineapple type subelement schematic diagram;
Figure 13 is that oblique 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 It leads section 2 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 52 oblique pineapple type induction units 8 along the axis direction group of support At, while by the way that one perpendicular to axis direction and the cross section on excessively oblique one vertex 22 of pineapple type subelement clips buckling and induces section 2 end toothed segment part, then buckling induces all sides in section end in the same plane.The triangle of oblique pineapple type subelement 9 The free margins 20 of shape plate four is overlapped with the free margins 18 of the triangular plate one of axially adjacent oblique pineapple type subelement 9, tiltedly To the free margins 21 of the triangular plate five of pineapple type subelement 9 and the triangle of axially adjacent oblique pineapple type subelement 9 The free margins 19 of plate two is overlapped.In Figure 11, oblique pineapple type induction unit 8 be by 7 oblique pineapple type subelements 9 diagonally It is arranged successively the space body to form that a section is helix, helix projects to cutting perpendicular to axis direction from axial direction Number of edges on face is 13;According to Figure 12, Figure 13, oblique pineapple type subelement 9 is by six isosceles three in the same plane Angular plate is by folding the space body formed composition, and six triangular plates are conllinear two-by-two and intersect at a vertex, according to counterclockwise Respectively triangular plate 1, triangular plate 2 11, triangular plate 3 12, triangular plate 4 13, triangular plate 5 14 and triangle Shape plate 6 15, the wherein common edge and triangular plate 4 13 of triangular plate 1 and triangular plate 2 11 and triangular plate 5 14 Common edge is crest line 16, common edge, triangular plate 3 12 and the triangular plate 4 13 of triangular plate 2 11 and triangular plate 3 12 Common edge, the common edge of triangular plate 5 14 and triangular plate 6 15, triangular plate 6 15 and triangular plate 1 it is public Side is valley line 17, and adjacent triangular plate is foldable outwardly along crest line 16, is folded inward along valley line 17;The outward folding is Refer to that the angle between the exterior normal of adjacent triangular plate becomes larger, is folded inward between the exterior normal for referring to adjacent triangular plate Angle become smaller.
Plate thickness (d/2) in buckling induction section 2 at all folding lines is the half of plate plate thickness d, the crest line valley line at folding line Partial enlargement is 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 (4)

1. a kind of casing buckling with oblique pineapple type induction unit induces support, section is induced by end restraint section (1), buckling (2), inner sleeve (3) and outer tube (4) composition, the end restraint section (1) are located at the both ends of buckling induction section (2), institute Buckling induction section (2) is stated to be clipped between inner sleeve (3) and outer tube (4), the inner sleeve and outer tube respectively with an end Confinement section connection, it is characterised in that: buckling induction section (2) is by least one oblique pineapple type induction unit (8) along branch The axis direction of support forms, and the end face for being located at oblique pineapple type induction unit (8) of buckling induction section (2) two sides is to pass through One perpendicular to axis direction and plane that the cross section of excessively oblique one vertex of pineapple type subelement (22) is clipped;The oblique pineapple Type induction unit (8) is diagonally to be arranged successively to form the sky that a section is helix by m oblique pineapple type subelements (9) Mesosome, the helix projected to from axial direction the number of edges on the section perpendicular to axis direction be 2m-1, m be more than or equal to 2 integer;Oblique pineapple type subelement (9) is by six isosceles triangle plates in the same plane by folding the sky formed Mesosome, six triangular plates are conllinear two-by-two and intersect at a vertex, according to respectively triangular plate one (10), triangle counterclockwise Plate two (11), triangular plate three (12), triangular plate four (13), triangular plate five (14) and triangular plate six (15), wherein three The common edge of the common edge and triangular plate four (13) and triangular plate five (14) of angular plate one (10) and triangular plate two (11) For crest line (16), common edge, triangular plate three (12) and the triangular plate four of triangular plate two (11) and triangular plate three (12) (13) common edge, triangular plate six (15) and the triangular plate of common edge, triangular plate five (14) and triangular plate six (15) The common edge of one (10) is valley line (17), and adjacent triangular plate is foldable outwardly along crest line (16), inside along valley line (17) It folds;Described be foldable outwardly refers to that the angle between the exterior normal of adjacent triangular plate becomes larger, be folded inward refer to it is adjacent Angle between the exterior normal of triangular plate becomes smaller;The free margins of the triangular plate four of the oblique pineapple type subelement (9) (20) it is overlapped with the free margins (18) of the triangular plate one of axially adjacent oblique pineapple type subelement (9), oblique pineapple type The triangular plate of the free margins (21) of the triangular plate five of subelement (9) and axially adjacent oblique pineapple type subelement (9) Two free margins (19) is overlapped;The left end of the inner sleeve (3) and the square plate (5) of left end confinement section (1) weld and connect It connects, the right end of inner sleeve (3) and the square plate (5) of right-hand end confinement section have one section to induce section (2) length not less than buckling 1/40 distance;The right end of the outer tube (4) and the square plate (5) of right-hand end confinement section (1) are welded to connect, housing Manage (4) left end and left end confinement section square plate (5) have one section not less than buckling induction segment length 1/40 away from From.
2. the casing buckling according to claim 1 with oblique pineapple type induction unit induces support, it is characterised in that: The end restraint section (1) is made of the connecting plate (7) that the components such as square plate (5), the short girder steel of T-type (6) and beam column are reserved, Square plate (5) is welded on buckling induction section (2) end, and two short girder steels of T-type (6) and square plate (5) are welded to connect, connection Plate (7) is clipped among two short girder steels of T-type (6), and connecting plate (7) is connect with the short girder steel of T-type (6) with high-strength bolt.
3. the casing buckling according to claim 1 with oblique pineapple type induction unit induces support, it is characterised in that: Gap between buckling induction section (2) and inner sleeve (3) and outer tube (4) is no more than 5mm;The inner sleeve (3) and outer Casing (4) is all made of the hollow steel pipe of circular cross-section.
4. the casing buckling according to claim 1 with oblique pineapple type induction unit induces support, it is characterised in that: Plate thickness in buckling induction section (2) at all folding lines is the half of plate plate thickness, the folding line being made of crest line, thickness change In inner surface side, the folding line being made of valley line, thickness change is in outer surface side.
CN201611030071.1A 2016-11-15 2016-11-15 A kind of casing buckling induction support with oblique pineapple type induction unit Active CN106836924B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000265706A (en) * 1999-03-19 2000-09-26 Sumitomo Metal Ind Ltd Buckling restraint brace
JP2003034984A (en) * 2001-07-24 2003-02-07 Takenaka Komuten Co Ltd Vibration control brace
CN105544763A (en) * 2016-01-15 2016-05-04 东南大学 Internal and external double-sleeve restraining folded steel plate energy-consuming support
CN105888348A (en) * 2016-06-01 2016-08-24 东南大学 Buckling control support with diamond type energy dissipation units at ends

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6826874B2 (en) * 1999-06-30 2004-12-07 Nippon Steel Corporation Buckling restrained braces and damping steel structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000265706A (en) * 1999-03-19 2000-09-26 Sumitomo Metal Ind Ltd Buckling restraint brace
JP2003034984A (en) * 2001-07-24 2003-02-07 Takenaka Komuten Co Ltd Vibration control brace
CN105544763A (en) * 2016-01-15 2016-05-04 东南大学 Internal and external double-sleeve restraining folded steel plate energy-consuming support
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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Application publication date: 20170613

Assignee: China Energy Construction Group Jiangsu Electric Power Design Institute Co.,Ltd.

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Contract record no.: X2021980000323

Denomination of invention: A buckling induced brace with inclined pineapple shaped induced element for casing

Granted publication date: 20190412

License type: Common License

Record date: 20210113