CN106567594A - Buckling inducing brace with ends provided with annular screw-type induction units - Google Patents

Buckling inducing brace with ends provided with annular screw-type induction units Download PDF

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Publication number
CN106567594A
CN106567594A CN201611029896.1A CN201611029896A CN106567594A CN 106567594 A CN106567594 A CN 106567594A CN 201611029896 A CN201611029896 A CN 201611029896A CN 106567594 A CN106567594 A CN 106567594A
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China
Prior art keywords
section
plate
brace
screw type
ring screw
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Granted
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CN201611029896.1A
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Chinese (zh)
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CN106567594B (en
Inventor
蔡建国
冯健
刘鹏
周宇航
柳杨青
马瑞君
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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 buckling inducing brace with the ends provided with annular screw-type induction units. The buckling inducing brace with the ends provided with the annular screw-type induction units comprises retraining sections and energy dissipation sections and further comprises a brace straight section. The energy dissipation sections are arranged at the two ends of the brace straight section. Each energy dissipation section is composed of at least one annular screw-type induction unit in the axial direction of the brace. Each annular screw-type induction unit is a space body with a regular polygon section, wherein the space body is formed in the manner that m annular screw-type induction subunits are annularly and sequentially arranged. Each annular screw-type induction subunit is a space body which is formed by two collinear triangular plates through folding. The buckling inducing brace with the ends provided with the annular screw-type induction units keeps elasticity under the action of a small earthquake; and under the action of an intermediate earthquake or a large earthquake, the buckling inducing brace enters a yielding stage, and the buckling inducing brace can achieve the effect of a damper through the good hysteretic energy dissipation capacity. Compared with a traditional buckling restraining brace, the buckling inducing brace with the ends provided with the annular screw-type induction units lightens the on-site construction workload, saves energy and is environmentally friendly.

Description

The flexing induction that a kind of end has ring screw type induction unit is supported
Technical field
The invention belongs to building structure technology field, more particularly to a kind of end has ring screw type induction unit Flexing induction is supported, it is adaptable to the steel construction with buckling restrained brace or xoncrete structure.
Background technology
During steel construction or reinforced concrete structure use, common support is pressurized to produce flexing phenomenon, when After support compressive buckling, rigidity and bearing capacity are drastically reduced.Under earthquake or wind action, the internal force of support is in pressurized and tension two Back and forth change under the state of kind.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 Can difference problem, support it is outside sleeve pipe is set, constrain the compressive buckling for supporting, constitute buckling restrained brace only central layer and other Component connects, and suffered load is all undertaken by central layer, and outer sleeve and packing material only constrain central layer compressive buckling, make central layer exist Tension and being entered by pressure is surrendered, thus, the Hysteresis Behavior of buckling restrained brace is excellent.Buckling restrained brace on the one hand can To avoid the defect of common support tension and compression bearing capacity significant difference, the on the other hand energy dissipation capacity with metal damper can be with Serve as in the structure " electric fuse " so that agent structure is substantially in elastic range.Therefore, the application of buckling restrained brace, Anti-seismic performance of traditional support frame under middle shake and big shake can comprehensively be improved.But traditional buckling restrained brace is generally adopted With steel and coagulation local soil type into restraining tube, it is high to cause to make precision prescribed, big from great and difficulty of construction, to core cell sheet There is larger additional load in body so as to promote and use range is very limited.
Applicant proposed the flexing control that a kind of end has duplex pyramid type power consumption unit on June 1st, 2016 Support(Application No. 201610380805.2)The flexing control with a kind of end with staggeredly pyramid power consumption unit is supported (Application No. 201610384216.1)Basic power consumption unit be pyramid, pyramid power consumption unit be it is non-rigid can Exhibition;So flexing control supports the difficulty for pressing the power consumption of high-order buckling mode larger.Applicant proposed one on June 1st, 2016 Plant the energy-dissipating type buckling restrained brace that end has symmetrical initial imperfection unit(Application No. 201610383430.5)And one kind The flexing control that end has brilliant power consumption unit is supported(Application No. 201610380804.8)Geometric configuration be fixed , design flexibility is little.It is unfavorable and construction, thickness of slab of the unit at folding line etc. that consume energy in above-mentioned support is consistent with non-folding line In the generation plastic hinge at folding line.
The content of the invention
The technical problem to be solved is the deficiency existed for above-mentioned prior art, and provides a kind of end tool The energy-dissipating type flexing induction for having ring screw type induction unit is supported.The induction unit reduces the torsional rigidity of unit, can lure Lead support and high order mode surrender occurs, it is to avoid support occurs to early complete buckling, and ring screw type is induced and have in unit many Bar folding line, can more give full play to the plastic property of unit, while the flat segments being connected with this element can guarantee that the axle of support again To rigidity, with good bearing capacity.
Technical scheme:For achieving the above object, the technical solution used in the present invention is:
The flexing induction that a kind of end has ring screw type induction unit is supported, including confinement section and power consumption section, and its feature exists In:Also include that one supports flat segments, the power consumption section to be arranged on the support flat segments two ends, in the other end of the power consumption section Described confinement section is set, and the section that consumes energy induces unit to constitute along the axis direction for supporting by least one ring screw type;Institute The ring screw type induction unit stated is circumferentially to be arranged in order to form a section for positive m by m ring screw type subelement Polygonal space body, the side number m of the regular polygon is the integer more than or equal to 3;The ring screw type subelement is served as reasons The space body that two pieces of triangular plates are collinearly folded, respectively triangular plate one and triangular plate two, wherein triangular plate one It is valley line with the common edge of triangular plate two.Triangular plate is described that adjacent three are referred to interior folding along valley line to interior folding Angle between the exterior normal of angular plate diminishes;Triangle in cross-sectional direction, in each described ring screw type subelement The free margins of shape plate two overlap with the free margins of the triangular plate one of adjacent ring screw type subelement;In the axial direction, often The freedom of individual ring screw type subelement intermediate cam shape plate two and the triangular plate one of adjacent adjacent ring screw type subelement Side overlaps.
The end restraint section is made up of regular polygon steel plate, T-shaped short girder steel and connecting plate, and regular polygon steel plate is welded on Power consumption section end, two T-shaped short girder steels are welded to connect with regular polygon steel plate, and connecting plate is clipped in the middle of two T-shaped short girder steels, even Fishplate bar is connected with T-shaped short girder steel with high-strength bolt, and the side number of described steel plate is more than or equal to 3.
The steel pipe and regular polygon steel plate that flat segments are supported by section for regular polygon is constituted, the weldering of regular polygon steel plate The end of the steel pipe of equilateral polygon section is connected on, power consumption section is welded to connect with regular polygon steel plate, the side number of the steel tube section Also it is more than or equal to 3.
Described power consumption section hole-opening at all folding lines, described hole diameter is d, and d is equal to plate thickness;Hole it Between distance be equal, described distance be equal to 5 times of hole diameters.
The single ring screw type induction unit is arranged in order shape by ring screw type subelement along supporting section ring Into the wherein triangle of the free margins of the triangular plate two in each ring screw type subelement and adjacent ring screw type subelement The free margins of shape plate one overlap.
Beneficial effect:
The flexing induction that a kind of end of the present invention has ring screw type induction unit is supported, by end restraint section, power consumption section and Flat segments are supported to constitute.Unit is induced using the folding line type of varied angle four in support, with more clear advantages:First, ring spiral shell Rotation type induces the torsional rigidity very little of unit, causes to support the motion that easily twists, so as to avoid supporting too early generation whole Body unstability.2nd, the folding line for causing ring screw type induction unit is surrendered in twist motion, consumes so as to produce plastic deformation Can, make support that there is good energy dissipation capacity and axial carrying capacity.3rd, ring screw type induction unit passes through what is pre-set The folding line formed by valley line and crest line, while the hole-opening at folding line, is more prone to induction and is supported under geological process, only can edge The axial direction deformation for supporting, default high order mode surrender occurs, while larger strain be able to can occur at folding line So as to form yield line, the purpose of dissipation seismic energy is reached.The four support flat segments in combination with flexing induces section, can To ensure the axial rigidity needed for supporting.Ring screw type induction in section is induced by changing the length for supporting flat segments and flexing The number of unit, can adjust the axial rigidity of this support and the relation of energy dissipation capacity.The present invention is avoided in processing technology Outside core dissipative member plus sleeve, between sleeve and core dissipative member grouting etc. process, simplify processing and fabricating mistake Journey, reduces construction costs.And the present invention can be only needed to pre- with components such as bolt and beam columns in factory process to scene Embedded part connects, and both ensure that component quality, and the wet trade workload at scene, energy-conserving and environment-protective are reduced again.End has ring spiral shell The flexing induction of rotation type induction unit supports both flexible arrangements with general buckling restrained brace, good energy-dissipating property etc. excellent Point, can control the flexing form for supporting again, prevent component from complete buckling occurs to early, while can avoid in core power consumption structure Part outside plus the process such as upper bush and grouting, effectively simplify manufacturing procedure, with good Popularizing of A.
Description of the drawings
Fig. 1 is the structural representation of the present invention;
Fig. 2 is end restraint section schematic diagram;
Fig. 3 is flexing section schematic diagram;
Fig. 4 is support flat segments schematic diagram;
Fig. 5 is square plate schematic diagram;
Fig. 6 is T-shaped short girder steel schematic diagram;
Fig. 7 is connecting plate schematic diagram;
Fig. 8 is that ring screw type induces cell schematics;
Fig. 9 is ring screw type subelement schematic diagram;
Figure 10 is ring screw type subelement floor map;
Figure 11 is hole floor map at folding line;
Figure 12 is A-A profiles in Figure 11.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 has the structural representation of the flexing induction support of ring screw type induction unit for end, by end restraint Section 1, power consumption section 2 and support flat segments 3 are constituted, and end restraint section 1 is fixed between bean column node and power consumption section 2, and power consumption section 2 is consolidated It is scheduled on support flat segments 3 two ends.
As shown in Fig. 2 the connecting plate 6 that end restraint section 1 is reserved by components such as square plate 4, T-shaped short girder steel 5 and beam columns Composition, square plate 4 is welded on power consumption section 2 end, and two T-shaped short girder steels 5 are welded to connect with square plate 4, the He of square plate 4 T-shaped short girder steel 5 is respectively as shown in Fig. 5,6.Connecting plate 6 is clipped in the middle of two T-shaped short girder steels 5, and connecting plate 6 is used with T-shaped short girder steel 5 High-strength bolt connection, wherein connecting plate 6 are as shown in Figure 7.
In Fig. 3, the section 2 that consumes energy induces unit 7 to constitute along the axis direction for supporting by eight ring screw types, wherein ring Ring screw type subelement intermediate cam shape plate 2 10 and adjacent adjacent ring screw type subelement 8 in screw type induction unit The free margins 12 of triangular plate 1 overlap.As shown in figure 8, ring screw type induces unit 7 by six identical ring screw types Subelement 8 is circumferentially arranged in order to form a section for orthohexagonal space body, wherein each ring screw type subelement 8 In the free margins 13 of triangular plate 2 10 overlap with the free margins 12 of the triangular plate 1 of adjacent ring screw type subelement 8. As shown in Figure 9, Figure 10, ring screw type subelement 8 is collinearly made up of two pieces of triangular plates, respectively triangular plate one 9 and three Angular plate 2 10, the wherein common edge of triangular plate 1 and triangular plate 2 10 are valley line 11.Triangular plate along valley line 11 to Interior folding, refers to that the angle between the exterior normal of adjacent triangular plate diminishes to interior folding.
As shown in figure 4, supporting flat segments 3 to be made up of the bracing members 14 and square plate 4 of square-section, square plate 4 is welded The end of the bracing members 14 of square-section is connected on, power consumption section 2 is welded to connect with square plate 4.
As shown in Figure 11, Figure 12, equidistant hole-opening at folding line in power consumption section 2, hole diameter for plate thickness d, hole The distance between hole is 5d.

Claims (4)

1. the flexing induction that a kind of end has ring screw type induction unit is supported, including confinement section(1)With power consumption section(2), It is characterized in that:Also include that one supports flat segments(3), the power consumption section(2)It is arranged on the support flat segments(3)Two ends, The other end of the power consumption section arranges described confinement section, and consume energy section(2)Unit (7 is induced by least one ring screw type)Edge The axis direction composition for supporting;Described ring screw type induction unit(7)It is by m ring screw type subelement(8)Edge Ring is arranged in order the space body to form that section is positive m sides shape, and the side number m of the regular polygon is whole more than or equal to 3 Number;The ring screw type subelement(8)It is the space collinearly folded by two pieces of triangular plates in being generally aligned in the same plane Body, two pieces of triangular plates are respectively triangular plate one(9)With triangular plate two(10), wherein triangular plate one(9)And triangle Plate two(10)Common edge be valley line(11);Triangular plate is along valley line(11)To interior folding, it is described refer to interior folding it is adjacent Triangular plate exterior normal between angle diminish;In cross-sectional direction, each described ring screw type subelement(8)In Triangular plate two(10)Free margins(13)With adjacent ring screw type subelement(8)Triangular plate one(9)Free margins (12)Overlap;In the axial direction, each ring screw type subelement intermediate cam shape plate two(10)With adjacent adjacent ring spiral shell Rotation type subelement(8)Triangular plate one(9)Free margins(12)Overlap.
2. the flexing induction that end according to claim 1 has ring screw type induction unit is supported, it is characterised in that: The end restraint section(1)By regular polygon steel plate(4), T-shaped short girder steel(5)And connecting plate(6)Composition, regular polygon steel plate (4)It is welded on power consumption section(2)End, two T-shaped short girder steels(5)With regular polygon steel plate(4)It is welded to connect, connecting plate(6)Folder In two T-shaped short girder steels(5)Centre, connecting plate(6)With T-shaped short girder steel(5)Connected with high-strength bolt, described steel plate(4)'s Side number is more than or equal to 3.
3. the flexing induction that end according to claim 1 has ring screw type induction unit is supported, it is characterised in that: The support flat segments(3)By the steel pipe that section is regular polygon(14)With regular polygon steel plate(4)Composition, regular polygon steel plate (4)It is welded on the steel pipe of equilateral polygon section(14)End, consume energy section(2)With regular polygon steel plate(4)It is welded to connect, it is described Steel pipe(14)The side number in section is more than or equal to 3.
4. the flexing induction that end according to claim 1 has corner depression induction unit is supported, it is characterised in that:Institute State power consumption section(2)The hole-opening at all folding lines, a diameter of d of described hole, d is equal to plate thickness;The distance between hole is Equal, the distance is equal to 5 times of hole diameters.
CN201611029896.1A 2016-11-15 2016-11-15 A kind of end has the buckling induction support of circumferential screw type induction unit Active CN106567594B (en)

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CN201611029896.1A CN106567594B (en) 2016-11-15 2016-11-15 A kind of end has the buckling induction support of circumferential screw type induction unit

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109025451A (en) * 2017-05-17 2018-12-18 大连大学 Double anti-unstability methods of torsion

Citations (5)

* 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
JP2003193699A (en) * 2001-12-28 2003-07-09 Sumitomo Metal Ind Ltd Elasto-plastic, visco-elastic brace
US20050257450A1 (en) * 2004-05-07 2005-11-24 Chong-Shien Tsai Shock-absorbing tie brace
CN105888348A (en) * 2016-06-01 2016-08-24 东南大学 Buckling control support with diamond type energy dissipation units at ends

Patent Citations (5)

* 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
JP2003193699A (en) * 2001-12-28 2003-07-09 Sumitomo Metal Ind Ltd Elasto-plastic, visco-elastic brace
US20050257450A1 (en) * 2004-05-07 2005-11-24 Chong-Shien Tsai Shock-absorbing tie brace
CN105888348A (en) * 2016-06-01 2016-08-24 东南大学 Buckling control support with diamond type energy dissipation units at ends

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109025451A (en) * 2017-05-17 2018-12-18 大连大学 Double anti-unstability methods of torsion

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