CN105507444A - Inner sleeve constraint folding steel plate energy dissipation support - Google Patents

Inner sleeve constraint folding steel plate energy dissipation support Download PDF

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Publication number
CN105507444A
CN105507444A CN201610027198.1A CN201610027198A CN105507444A CN 105507444 A CN105507444 A CN 105507444A CN 201610027198 A CN201610027198 A CN 201610027198A CN 105507444 A CN105507444 A CN 105507444A
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CN
China
Prior art keywords
core cylinder
sleeve
energy dissipation
steel plate
triangle
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Granted
Application number
CN201610027198.1A
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Chinese (zh)
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CN105507444B (en
Inventor
陆金钰
杨连坤
谯旭东
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Southeast University
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Southeast University
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Priority to CN201610027198.1A priority Critical patent/CN105507444B/en
Publication of CN105507444A publication Critical patent/CN105507444A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids

Abstract

The invention discloses an inner sleeve constraint folding steel plate energy dissipation support. The energy dissipation support comprises a core cylinder, an inner sleeve arranged in the core cylinder, end load bearing plates arranged at cylinder openings in the two sides of the core cylinder, a crossed fixed plate arranged in the inner sleeve and connected with the inner sides of the end load bearing plates and a crossed gusset plate connected to the outer sides of the end load bearing plates. The core cylinder is formed by sequentially connecting multiple energy consumption units. Each energy consumption unit consists of 4n triangles with different surfaces. The energy dissipation support produces pre-folding traces through folding steel plates and can produce plastic hinge lines at the folding traces when bearing a load, and the energy consumption capacity of the support is enhanced through the plastic hinge lines; meanwhile, the sleeve is arranged in the core cylinder to improve annular constraint to the core cylinder, and therefore the rigidity and ultimate bearing capacity of the support can be improved conveniently.

Description

The folding steel plate energy dissipation brace of inner sleeve constraint
Technical field
The invention belongs to building structure energy dissipation brace field, relate to the folding steel plate energy dissipation brace of a kind of inner sleeve constraint.
Background technology
Earthquake is a kind of strong natural calamity, and the energy discharged during earthquake can form fatefulue destruction to building.In order to the protecting energy building discharged when absorbing earthquake, avoid because excessive energy input damaged building, the security of the lives and property of protection people, buckling restrained brace device is widely used.
Buckling restrained brace is formed primarily of parts such as central layer, outer tube, non-cohesive materials.In this technology, central layer is main stress unit, and under geological process, central layer deforms and consumes the energy that earthquake inputs, thus reaches the object of protection main body frame.Inner sleeve is by the constraint to central layer, and preventing central layer from producing lateral buckling affects its energy consumption effect.
But current buckling-restrained energy dissipation brace plastic hinge occurs less, the energy dissipation capacity of monoblock central layer can not be played, the yield point position of uncontrollable central layer, the quantity that uncontrollable plastic hinge occurs, this just makes the energy-dissipating property of whole support can not realize accurate control, thus gets a desired effect.
Summary of the invention
Technical problem: the invention provides a kind of core cylinder utilizing folding steel plate to be formed and replace central layer as main bearing member, after the surrender utilizing it good, energy dissipation capacity reduces the seismic response of building, make simple, be convenient to install, structural seismic aspect can be applied to, effectively the folding steel plate energy dissipation brace of inner sleeve constraint of earthquake disaster mitigation.
Technical scheme: the folding steel plate energy dissipation brace of inner sleeve constraint of the present invention, comprise core cylinder, be arranged on the inner sleeve in described core cylinder, be arranged on the termination bearing plate of described core cylinder both sides nozzle, be arranged in inner sleeve with the cross fixed head be connected inside the bearing plate of termination, be connected to the cruciform gusset plate outside the bearing plate of termination, described core cylinder is connected in sequence by multiple power consumption unit, described power consumption unit comprises 4n antarafacial triangle, wherein 2n is first kind triangle, 2n is Equations of The Second Kind triangle, every two first kind vertex angle connect setting, form a grouping, every two Equations of The Second Kind triangle base connect setting, form a grouping, the grouping of first kind triangle is divided into groups adjacent connection with Equations of The Second Kind triangle, be spliced into a cylindrical member, n is power consumption polygon limit, unit end number, n >=3.
Further, in the present invention, the size of described termination bearing plate and the nozzle of core cylinder measure-alike.
Further, in the present invention, there is gap between described core cylinder inwall and inner sleeve, be wherein filled with non-cohesive material.
Further, in the present invention, described cruciform gusset plate is welded with vertical stiffening rib.
Folding steel plate energy dissipation brace of the present invention adopts the mode of punching press to make it occur folding line to steel plate, be equivalent to introduce initial imperfection among steel plate, and then the position occurring plastic hinge can be controlled, make plastic hinge appear near folding line, the quantity of plastic hinge can also be controlled by the quantity controlling folding line.Then the Plate Welding after punching press is become tubular, add stability simultaneously, not easily out-of-plane buckling occurs.
The folding steel plate energy dissipation brace of inner sleeve constraint of the present invention is by core cylinder, inner sleeve, termination bearing plate, cross fixed head, cruciform gusset plate, non-cohesive material, and stiffening rib is formed; Its SMIS cylinder becomes tubular by general steel plate through punch welding, and its folded section is made up of the power consumption unit that physical dimension is identical.And power consumption cell cube four sides all adopts identical folding line, its structural form is relatively simple, easy to make; Termination bearing plate is connected with core cylinder, cruciform gusset plate, cross fixed head, and load is passed to core cylinder uniformly.The position of cross fixed head determination inner sleeve, is welded in inside the bearing plate of termination.This support is connected with framework by cruciform gusset plate.There is excessive distortion and affect the energy-dissipating property of whole support in inner sleeve restriction power consumption section folding line place.Non-cohesive material is covered in inner sleeve external surface, weakens the friction between inner sleeve and core cylinder, and stiffening rib is arranged on cruciform gusset plate, prevents gusset plate compressive buckling.
The folding steel plate energy dissipation brace of inner sleeve constraint of the present invention produces pre-folding line by folding steel plate, yield line can be produced at folding line place when bearing load, utilize yield line to increase the energy dissipation capacity of this support, sleeve pipe is set in the inside of core cylinder simultaneously, improve the hoop constraint to core cylinder, be convenient to the rigidity and the ultimate bearing capacity that improve this support.
Its core is core cylinder, and core cylinder has embodied a concentrated reflection of the design principle of invention, and is described for during n=4:
Described core cylinder, as shown in Fig. 11, that steel plate forms through punch welding, the power consumption unit be made up of the isosceles triangle of a series of congruence can be formed through punching press, then form tubular through welding, as shown in Figure 4, for ensureing good energy dissipation capacity, just with processing, steel used preferentially adopt mild steel, Q235 or high performance steel, and steel plate thickness used should not be greater than 50mm.
Described inner sleeve, as shown in Fig. 15, the preferential steel that adopt are made, and can be round steel pipe, square steel pipe, existing steel pipe specification on preferential use market.
Described non-cohesive material is arranged between core cylinder and inner sleeve, and as shown in Fig. 16, non-cohesive material is the layer of silica gel that 2mm is thick, is used for weakening the friction between inner sleeve and core cylinder.
Described termination bearing plate is arranged at core cylinder both ends, as shown in Fig. 13, is high strength steel plate is cut into the hexahedron with the unit side-anastomosis that consumes energy, is welded in core cylinder two ends.
Described cross fixed head, is welded in inside the bearing plate of termination as shown in Fig. 14, the position of restriction inner sleeve.
Described cruciform gusset plate, as shown in Fig. 12, adopts the steel identical with termination bearing plate, is welded on the bearing plate of termination.
Described stiffening rib, as shown in Fig. 17, arranges four roads altogether, and per pass is made up of four identical steel plates, is welded on cruciform gusset plate.
Beneficial effect: the present invention compared with prior art, has the following advantages:
Existing buckling restrained brace adopts outer tube to limit the flexing of its central layer, and position and the quantity of plastic hinge appear in uncontrollable central layer, make the energy dissipation capacity of existing buckling restrained brace not reach desirable effect.Creationaryly in the present invention introduce core cylinder, and inner sleeve is set in core cylinder, make core cylinder and inner sleeve collaborative work, when core cylinder bearing load contacts with inner sleeve, utilize contacting with each other of inner sleeve and core cylinder, increase the rigidity of core cylinder, improve its ultimate bearing capacity, the hysteretic energy performance of core cylinder can also be improved simultaneously, thus consume the energy that earthquake inputs building when earthquake better.
The side of this core cylinder all adopts triangle folding line, folding line form is succinct, be convenient to carry out punching press making, when bearing geological process, mainly be subject to the axial load that building frame transmits, this axial load can be pulling force, also can be pressure, when it is subject to load action, can occurs to stretch or compressive strain, this core cylinder is slided in outer tube, outer tube produces effect of contraction to core cylinder, prevent core cylinder generation out-of-plane buckling, make it can only occur to stretch or compression, to guarantee its energy-dissipating property at its length direction.
The present invention supports and adopts folding steel plate core cylinder to replace having the central layer in invention, core cylinder is adopted to increase the hysteretic energy performance of whole support, this core cylinder produces a series of triangle folding line by plain plate thereon through punching press, this core cylinder can launch, punching press produces folding line and is equivalent to introduce defect artificially, make this be supported on folding line place and occur that plastic hinge absorbs energy, the number that plastic hinge occurs can also be controlled by the quantity controlling folding line simultaneously, core cylinder can realize many places folding line and occur plastic hinge, adds the energy dissipation capacity of support.Introduce inner sleeve in this core cylinder inside, this inner sleeve is then stuck on cross fixed head, by this setting, prevents core cylinder generation flexing, and on the cruciform gusset plate of this support, is welded with stiffening rib to prevent from, during its pressurized, flexing occurs.
This support processing and fabricating is simple, and easy for installation, having good shock resistance and energy dissipation capacity, is a kind of outstanding energy dissipation component.
Accompanying drawing explanation
Fig. 1 is the folding steel plate energy dissipation brace constructional drawing of inner sleeve constraint.
Fig. 2 is termination bearing plate connecting structure detail drawing.
Fig. 3 is A-A cross-sectional configuration figure.
Fig. 4 is power consumption unit module constructional drawing, and wherein Fig. 4 a is power consumption unit shaft mapping, and Fig. 4 b is power consumption unit left view, and Fig. 4 c is power consumption unit elevation.
Fig. 5 is power consumption units folded pattern diagram, and wherein dotted line is indenture.
Fig. 6 is power consumption cell node coordinate schematic diagram.
Fig. 7 is power consumption unit size schematic diagram, and wherein Fig. 7 a is the projection of power consumption unit to YZ face, and Fig. 7 b is one in the congruent triangles of this unit of composition.
Have in figure: core cylinder 1, cruciform gusset plate 2, termination bearing plate 3, cross fixed head 4, inner sleeve 5, non-cohesive material 6, stiffening rib 7.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, the present invention is further illustrated.
Embodiment 1
As shown in Figures 1 to 5, the present invention is by core cylinder 1, cruciform gusset plate 2, termination bearing plate 3, cross fixed head 4, inner sleeve 5, non-cohesive material 6, and stiffening rib 7 seven part formed.Core cylinder 1 forms different simple geometry figures by steel plate through punching press, then carries out being welded to tubular.As shown in Figure 4, in the present embodiment, the geometric figure on core cylinder 1 is the combination of isosceles triangle.Its folding mode as shown in Figure 5, be the folding line pattern in this embodiment, carry out being welded into core cylinder 1, and dotted line is indenture by two ends.As shown in Figure 2, what be connected with core cylinder 1 is termination bearing plate 3, and termination bearing plate 3 is welded in core cylinder 1 nozzle four limit, and termination bearing plate 3 size and core cylinder 1 nozzle measure-alike.Meanwhile, cross fixed head 4 is welded in inside termination bearing plate 3.Termination bearing plate 3 opposite side welds with cruciform gusset plate 2, and cruciform gusset plate 2 is connected with fabric structure framework, often holds on cruciform gusset plate and is all welded with twice stiffening rib 7.Inner sleeve 5 outer wall is coated with non-cohesive material, and this non-cohesive material adopts layer of silica gel, and thickness is 2mm.
Embodiment 2
The present embodiment is identical with embodiment 1 remainder, is changed to square tube to provide constraint unlike by the pipe of inner sleeve 5.
In order to the spatial configuration of more clearly expressor unit, set up the coordinate that rectangular coordinate system in space illustrates each node, as shown in Figure 8, origin of coordinates O is the center of subelement, makes X-axis with the diagonal FH place straight line of quadrangle EFGH, and pointing to H from F is positive direction, Z axis is made with this quadrangle another diagonal EG place straight line, pointing to G by E is positive direction, using cross some O and the straight line vertical with X-axis, Z axis as Y-axis, positive direction be from face ABCD sensing face IJKL.
Power consumption unit size will meet following condition, and (θ is the dihedral angle of △ DCG and △ LKG, α is the angle in △ DCG and XY face, a is the length of side of square ABCD, b is the catercorner length of square EFGH, c is the length of the waist of any one isosceles triangle of composition subelement, d is the height on this isosceles triangle base, and l is the projected length of subelement along Y direction):
b = 2 a ; c = ( a 2 ) 2 + d 2 ; d = l 2 c o s α ; θ=π-2α。
Each node coordinate is: A ( a 2 , - l 2 , - a 2 ) , B ( - a 2 , - l 2 , - a 2 ) , C ( - a 2 , - l 2 , a 2 ) , D ( a 2 , - l 2 , a 2 )
E ( 0 , 0 , - b 2 ) , F ( - b 2 , 0 , 0 ) , G ( 0 , 0 , b 2 ) , H ( b 2 , 0 , 0 )
I ( a 2 , l 2 , - a 2 ) , J ( - a 2 , l 2 , - a 2 ) , K ( - a 2 , l 2 , a 2 ) , L ( a 2 , l 2 , a 2 ) .
Above-described embodiment is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention; some improvement and equivalent replacement can also be made; these improve the claims in the present invention and are equal to the technical scheme after replacing, and all fall into protection scope of the present invention.

Claims (4)

1. the folding steel plate energy dissipation brace of inner sleeve constraint, it is characterized in that, this energy dissipation brace comprises core cylinder (1), be arranged on the inner sleeve (5) in described core cylinder (1), be arranged on the termination bearing plate (3) of described core cylinder (1) both sides nozzle, be arranged on the cross fixed head (4) be connected with termination bearing plate (3) inner side in inner sleeve (5), be connected to the cruciform gusset plate (2) in termination bearing plate (3) outside, described core cylinder (1) is connected in sequence by multiple power consumption unit, described power consumption unit comprises 4n antarafacial triangle, wherein 2n is first kind triangle, 2n is Equations of The Second Kind triangle, every two first kind vertex angle connect setting, form a grouping, every two Equations of The Second Kind triangle base connect setting, form a grouping, the grouping of first kind triangle is divided into groups adjacent connection with Equations of The Second Kind triangle, be spliced into a cylindrical member, n is power consumption polygon limit, unit end number, n >=3.
2. the folding steel plate energy dissipation brace of inner sleeve according to claim 1 constraint, is characterized in that, the size of described termination bearing plate (3) and the nozzle of core cylinder (1) measure-alike.
3. the folding steel plate energy dissipation brace of inner sleeve constraint according to claim 1 and 2, is characterized in that, be provided with gap, be wherein filled with non-cohesive material (6) between described core cylinder (1) inwall and inner sleeve (5).
4. the folding steel plate energy dissipation brace of inner sleeve constraint according to claim 1 and 2, is characterized in that, described cruciform gusset plate (2) is welded with vertical stiffening rib (7).
CN201610027198.1A 2016-01-15 2016-01-15 Inner sleeve constraint folds steel plate energy dissipation brace Active CN105507444B (en)

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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105839973A (en) * 2016-06-01 2016-08-10 东南大学 Buckling control support with end provided with staggered pyramid type energy consumption unit
CN105888348A (en) * 2016-06-01 2016-08-24 东南大学 Buckling control support with diamond type energy dissipation units at ends
CN106049952A (en) * 2016-06-01 2016-10-26 东南大学 Buckling control support with bidirectional pyramid-shaped energy dissipation units at ends
CN106049954A (en) * 2016-06-01 2016-10-26 东南大学 Sleeve restraint anti-buckling support provided with bidirectional pyramid-shaped energy dissipation units
CN106049699A (en) * 2016-06-01 2016-10-26 东南大学 Sleeve restraint anti-buckling support provided with staggered pyramid-shaped energy dissipation units
CN106114630A (en) * 2016-08-30 2016-11-16 合肥常青机械股份有限公司 A kind of frame structure of chassis assembly
CN106368487A (en) * 2016-11-15 2017-02-01 东南大学 Sleeve buckling induction brace with circular spiral type induction unit
CN106639461A (en) * 2016-11-15 2017-05-10 东南大学 Casing pipe bending induction support with length-variable four-crease type induction units
CN105971356B (en) * 2016-06-01 2018-08-21 东南大学 A kind of end has the energy-dissipating type buckling restrained brace of symmetrical initial imperfection unit

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US20130205690A1 (en) * 2011-12-19 2013-08-15 Andrew Hinchman Buckling-restrained brace
CN204626690U (en) * 2015-05-12 2015-09-09 郑州大学 The double steel tube anti-flex of Self-resetting supports
CN205329889U (en) * 2016-01-15 2016-06-22 东南大学 Interior sleeve pipe restraint folding steel plate energy dissipation brace

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Publication number Priority date Publication date Assignee Title
CN201395874Y (en) * 2009-04-24 2010-02-03 兰州理工大学 Damping bar of dual steel pipe restrained-buckling support
CN201526099U (en) * 2009-10-23 2010-07-14 广州大学 Triple circular steel tube buckling-restrained anti-seismic support
CN202187448U (en) * 2011-07-21 2012-04-11 清华大学 Single-rod square steel pipe support with sleeve
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CN102505772A (en) * 2011-12-23 2012-06-20 卢锐 Buckling restrained energy-consumption supporting device of building frame structure
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CN204626690U (en) * 2015-05-12 2015-09-09 郑州大学 The double steel tube anti-flex of Self-resetting supports
CN205329889U (en) * 2016-01-15 2016-06-22 东南大学 Interior sleeve pipe restraint folding steel plate energy dissipation brace

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106049952B (en) * 2016-06-01 2018-08-21 东南大学 A kind of end has the buckling control support of duplex pyramid type energy consumption unit
CN105888348A (en) * 2016-06-01 2016-08-24 东南大学 Buckling control support with diamond type energy dissipation units at ends
CN106049952A (en) * 2016-06-01 2016-10-26 东南大学 Buckling control support with bidirectional pyramid-shaped energy dissipation units at ends
CN106049954A (en) * 2016-06-01 2016-10-26 东南大学 Sleeve restraint anti-buckling support provided with bidirectional pyramid-shaped energy dissipation units
CN106049699A (en) * 2016-06-01 2016-10-26 东南大学 Sleeve restraint anti-buckling support provided with staggered pyramid-shaped energy dissipation units
CN106049699B (en) * 2016-06-01 2018-08-21 东南大学 A kind of casing constraining anti-buckling support with staggeredly pyramid energy consumption unit
CN106049954B (en) * 2016-06-01 2019-01-08 东南大学 A kind of casing constraining anti-buckling support with duplex pyramid type energy consumption unit
CN105839973A (en) * 2016-06-01 2016-08-10 东南大学 Buckling control support with end provided with staggered pyramid type energy consumption unit
CN105839973B (en) * 2016-06-01 2018-07-27 东南大学 A kind of end has the buckling control support of staggeredly pyramid energy consumption unit
CN105888348B (en) * 2016-06-01 2018-07-27 东南大学 A kind of end has the buckling control support of brilliant energy consumption unit
CN105971356B (en) * 2016-06-01 2018-08-21 东南大学 A kind of end has the energy-dissipating type buckling restrained brace of symmetrical initial imperfection unit
CN106114630A (en) * 2016-08-30 2016-11-16 合肥常青机械股份有限公司 A kind of frame structure of chassis assembly
CN106639461A (en) * 2016-11-15 2017-05-10 东南大学 Casing pipe bending induction support with length-variable four-crease type induction units
CN106368487A (en) * 2016-11-15 2017-02-01 东南大学 Sleeve buckling induction brace with circular spiral type induction unit
CN106368487B (en) * 2016-11-15 2019-05-21 东南大学 A kind of casing buckling induction support with circumferential screw type induction unit

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