CN103572855A - All-steel stress-compensating buckling-restrained brace with H-beam energy dissipation core - Google Patents

All-steel stress-compensating buckling-restrained brace with H-beam energy dissipation core Download PDF

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Publication number
CN103572855A
CN103572855A CN201210268013.8A CN201210268013A CN103572855A CN 103572855 A CN103572855 A CN 103572855A CN 201210268013 A CN201210268013 A CN 201210268013A CN 103572855 A CN103572855 A CN 103572855A
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China
Prior art keywords
steel
power consumption
shaped steel
restrained brace
energy dissipation
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CN201210268013.8A
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Chinese (zh)
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CN103572855B (en
Inventor
郭小康
许立新
陈桥生
朱卫军
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Shanghai Baoye Group Corp Ltd
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Shanghai Baoye Group Corp Ltd
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Abstract

The invention relates to a building shock absorption device, in particular to an all-steel stress-compensating buckling-restrained brace with an H-beam energy dissipation core. The all-steel stress-compensating buckling-restrained brace comprises an H-beam energy dissipation core and a rectangular sleeve whereby the section of an H-beam is sleeved. Each flange of the H-beam energy dissipation core has wide ends and narrow middle. Width transition positions between the middle and ends of the upper surface of each flange are provided with raised steel pads. Two ends of a web of the H-beam energy dissipation core are provided with web stiffening plates connected by means of fillet welt three-side girth welding. Two pairs of steel angles are arranged inside the steel sleeve and on two sides of each flange of the H-beam energy dissipation core respectively. The steel angles in each pair are arranged back to back, and two sides of the pair of steel angles are respectively connected to the inner wall of the steel sleeve by welding. The middle and ends of each of two faces of the steel sleeve are provided with slots corresponding to the steel pads on the upper surface of the corresponding flange of the H-beam energy dissipation core; the steel pads penetrate the corresponding slots; the periphery of each pad in the middle is fixed to the four walls of the corresponding slot by girth welding; the slots in two ends are wider than the corresponding pads; two ends of each slot are provided with stoppers. The all-steel stress-compensating buckling-restrained brace with the H-beam energy dissipation core has the function of tension compensation.

Description

Clean steel H shaped steel power consumption core tension compensation buckling restrained brace
Technical field
The present invention relates to build damping device, relate in particular to energy-consumption shock-absorption device for building.
Background technology
Earthquake is the probabilistic natural calamity of a kind of height, has brought grave danger to the mankind's life and property safety, and strong earthquake will cause loss difficult to the appraisal.For building structure, energy-consumption shock-absorption device being installed is to reduce structural earthquake damage effective means.From the viewpoint of energy, the main cause that structure is collapsed under rarely occurred earthquake is the energy that the energy dissipation capacity of structure self is not enough to consume earthquake input structure, thereby causes the critical component generation fatigue fractures such as node, beam, post of structure to destroy.Even if structure does not collapse, the damage of structure is also costly with corresponding repair, and the cycle is very long, can affect the normal usage function of structure, causes the generation of secondary disaster, will people's life and production be caused to huge negative effect.The energy-consumption shock-absorption device additional for building structure can absorb large energy in earthquake, makes damage concentration in energy-consumption shock-absorption device itself, thereby plays protection agent structure, reduces the effect of structural key position component damage.All previous earthquake finding shows, adopts the building structure of energy-consumption shock-absorption device all to have comparatively superior anti-seismic performance.Conventional energy-consuming shock absorber has viscous damper, viscoelastic damper, metal damper etc.
Conventionally buckling restrained brace has two kinds of principal modes, and (1) take the buckling restrained brace that concrete filled steel tube is tied mechanism, and the buckling restrained brace deadweight of this type is larger, and the process-cycle is poor, and processing technology is complexity comparatively also; (2) clean steel type buckling restrained brace, this kind of support is by the effect of contraction of the realizations such as the steel bushing of putting more energy into power consumption unit, and although deadweight is lighter, process velocity is very fast, and certainly steel using amount will increase, and cost also can correspondingly promote.And common buckling restrained brace is under the reciprocating of earthquake, core stress-strain state is reciprocation cycle also, easily produces fatigue fracture and destroys.So, after supporting core fracture, will no longer provide tensile capacity, cause the lateral resistant ability moment decline of structure, very unfavorable to antidetonation.
Summary of the invention
The present invention is intended to overcome the defect of prior art, and a kind of clean steel H shaped steel power consumption core tension compensation buckling restrained brace is provided.The present invention's can prevent from consuming energy generation cripling of core cell is destroyed, do not need the measure of putting more energy into of extra face outward, only need to guarantee to support whole unstable failure does not occur, and by tension compensation arrangement, the post-rift pulling force of support is delivered to constraint steel bushing, realized the function of tension compensation.
In order to solve the problems of the technologies described above, the present invention is achieved in that a kind of clean steel H shaped steel power consumption core tension compensation buckling restrained brace, and it comprises a H shaped steel power consumption core and a steel bushing that the cross section being enclosed within on H shaped steel is rectangle;
The edge of a wing of described H shaped steel power consumption core is the narrow dumbbell shape in wide centre, two ends, and the width crossover position at the centre of its upper surface and two ends is provided with protruding billet, and the billet at two ends is consistent with web direction; Web two ends also trihedral angle weld seam weld all around are connected with web stiffened panel;
In described steel bushing, be provided with two pairs of angle steel, and ,Mei diagonal angle, the both sides steel backing that lays respectively at the H shaped steel power consumption core edge of a wing is to setting, both sides are welded to connect with steel bushing inwall respectively; Centre on parallel two faces in the edge of a wing with described H shaped steel power consumption core of this steel bushing and and two ends be provided with the H shaped steel power consumption core edge of a wing on show the groove that billet is corresponding, each backing plate passes respectively in corresponding groove, middle backing plate surrounding and the weld all around of groove wall are fixed, the recess width at two ends is greater than corresponding backing plate width, and groove two ends are provided with block.
Described clean steel H shaped steel power consumption core tension compensation buckling restrained brace, central slot and the inwall between grooves on two sides of described steel bushing are provided with backing plate contiguous block, and the setting party of this backing plate contiguous block and H shaped steel is to orthogonal.
Described clean steel H shaped steel power consumption core tension compensation buckling restrained brace, its oblique support is arranged between post and back timber.
The present invention is a kind of of metal damping energy dissipation device, i.e. buckling restrained brace.It is by the efficient energy consume mechanism of power consumption core cell axial push-pull surrender, dissipation inputting seismic energy.Its edge of a wing by restriction H shaped steel core and the flakiness ratio of web, the generation cripling of core cell of can preventing from consuming energy is destroyed, do not need the measure of putting more energy into of extra face outward, only need to guarantee to support whole unstable failure does not occur, and by tension compensation arrangement, the post-rift pulling force of support is delivered to constraint steel bushing, has realized the function of tension compensation.Economy of the present invention, practicality, functional all better, have good application value.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is 2-2 sectional view in Fig. 2;
Fig. 4 is 3-3 sectional view in Fig. 2;
Fig. 5 is 4-4 sectional view in Fig. 2;
Fig. 6 is the schematic diagram that arranges of the present invention;
Fig. 7 is test hysteresis loop figure of the present invention.
The specific embodiment
As shown in Figures 1 to 5, a kind of clean steel H of the present invention shaped steel power consumption core tension compensation buckling restrained brace, which comprises at least: the H shaped steel power consumption core 1, that an edge of a wing weakens limits steel sleeve 2, web stiffener 3, the angle steel 4 of the whole unstability flexing of this H shaped steel core pressurized, some backing plates 5,7, tension compensation mechanism 6.
Edge of a wing 1-1 and the web 1-2 of the H shaped steel power consumption core 1 that a described edge of a wing weakens have strict flakiness ratio requirement, and are close to constraint by constraint steel sleeve 2 and angle steel 4 and backing plate 5.
Described angle steel 4 welds by double-side angular weld seam and steel bushing 2 inwalls, and the spacing that is welded in two confining parts on sleeve the same face equals the width that H section steel flange weakens section.
Described angle steel 4 is not elongated steel sleeve 2 inside that are arranged in, and its end and H shaped steel not weakening place leave certain distance 8, for supporting pressurized Free Transform.
Described web reinforcement stiffener (3) passes through three corner weld seam weld all arounds in H shape steel web (1-2) end, and stretches out the outer certain distance of sleeve, is convenient to weld with gusset plate.
Described some backing plates 5 are welded in steel bushing inwall by fillet weld interval, and are close to the edge of a wing 1-1 of H shaped steel power consumption core.
Described tension compensation mechanism 6 is realized in the following manner: on the H shaped steel core edge of a wing, without weakening a section face that is adjacent to sleeve, weld a stiffener 6-1, and at the relevant position of steel bushing otch 6-2, and the length of notch is greater than the length of 6-1, so that for supporting Free Transform slot milling, when supporting core fracture or displacement surmount limit value, stiffener can with the face of steel bushing in and fill plate push, the suffered pulling force of supporting core is passed to steel bushing 2.
Described shoe 7 is realized in the following manner: at H shaped steel power consumption core edge of a wing middle part welding fill plate 7-1, at steel sleeve relevant position otch 7-2, make welded fill plate just be positioned at notch, and then by fillet weld, fill plate and sleeve are welded as a whole.
Now refer to Fig. 6, described clean steel H shaped steel power consumption core tension compensation buckling restrained brace, its oblique support is arranged between post 8 and back timber 9.

Claims (3)

1. a clean steel H shaped steel power consumption core tension compensation buckling restrained brace, is characterized in that, it comprises a H shaped steel power consumption core and a steel bushing that the cross section being enclosed within on H shaped steel is rectangle;
The edge of a wing of described H shaped steel power consumption core is the narrow dumbbell shape in wide centre, two ends, and the width crossover position at the centre of its upper surface and two ends is provided with protruding billet, and the billet at two ends is consistent with web direction; Web two ends are also provided with the web stiffener connecting by the weld all around of trihedral angle weld seam;
In described steel bushing, be provided with two pairs of angle steel, and ,Mei diagonal angle, the both sides steel backing that lays respectively at the H shaped steel power consumption core edge of a wing is to setting, both sides are welded to connect with steel bushing inwall respectively; Centre on parallel two faces in the edge of a wing with described H shaped steel power consumption core of this steel bushing and and two ends be provided with the H shaped steel power consumption core edge of a wing on show the groove that billet is corresponding, each backing plate passes respectively in corresponding groove, middle backing plate surrounding and the weld all around of groove wall are fixed, the recess width at two ends is greater than corresponding backing plate width, and groove two ends are provided with block.
2. clean steel H shaped steel power consumption core tension according to claim 1 compensates buckling restrained brace, it is characterized in that, central slot and the inwall between grooves on two sides of described steel bushing are provided with backing plate contiguous block, and the setting party of this backing plate contiguous block and H shaped steel is to orthogonal.
3. clean steel H shaped steel power consumption core tension compensation buckling restrained brace according to claim 1, is characterized in that, its oblique support is arranged between post and back timber.
CN201210268013.8A 2012-07-31 2012-07-31 Clean steel H profile steel power consumption core tension compensates buckling restrained brace Active CN103572855B (en)

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CN201210268013.8A CN103572855B (en) 2012-07-31 2012-07-31 Clean steel H profile steel power consumption core tension compensates buckling restrained brace

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Application Number Priority Date Filing Date Title
CN201210268013.8A CN103572855B (en) 2012-07-31 2012-07-31 Clean steel H profile steel power consumption core tension compensates buckling restrained brace

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CN103572855B CN103572855B (en) 2016-02-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499077A (en) * 2016-09-20 2017-03-15 北京工业大学 Metal-rubber damper with limitation locking function and anti-buckling support combinations energy-dissipating device
CN106499240A (en) * 2016-09-20 2017-03-15 北京工业大学 There is the telescopic anti-buckling support of multistage buckling strength and positioning metal rubber power consumption ring

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003213815A (en) * 2002-01-24 2003-07-30 Mitsubishi Heavy Ind Ltd Aseismatic structure of steel construction, and aseismatic repair method
JP4035769B2 (en) * 2003-02-12 2008-01-23 清水建設株式会社 Composite brace damper
CN201190347Y (en) * 2008-05-14 2009-02-04 哈尔滨工业大学 Full angle steel type buckling-restrained brace component
TW201114992A (en) * 2009-10-20 2011-05-01 ke-qiang Lin Assembly method of buckling restrained brace device and a buckling restrained brace device
CN201933634U (en) * 2010-10-15 2011-08-17 清华大学 H-shaped cross section assembly type anti-flexure support component
CN202787553U (en) * 2012-07-31 2013-03-13 上海宝冶集团有限公司 Pure H-shaped steel tension-compensation buckling restrained brace with energy-dissipation core

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003213815A (en) * 2002-01-24 2003-07-30 Mitsubishi Heavy Ind Ltd Aseismatic structure of steel construction, and aseismatic repair method
JP4035769B2 (en) * 2003-02-12 2008-01-23 清水建設株式会社 Composite brace damper
CN201190347Y (en) * 2008-05-14 2009-02-04 哈尔滨工业大学 Full angle steel type buckling-restrained brace component
TW201114992A (en) * 2009-10-20 2011-05-01 ke-qiang Lin Assembly method of buckling restrained brace device and a buckling restrained brace device
CN201933634U (en) * 2010-10-15 2011-08-17 清华大学 H-shaped cross section assembly type anti-flexure support component
CN202787553U (en) * 2012-07-31 2013-03-13 上海宝冶集团有限公司 Pure H-shaped steel tension-compensation buckling restrained brace with energy-dissipation core

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499077A (en) * 2016-09-20 2017-03-15 北京工业大学 Metal-rubber damper with limitation locking function and anti-buckling support combinations energy-dissipating device
CN106499240A (en) * 2016-09-20 2017-03-15 北京工业大学 There is the telescopic anti-buckling support of multistage buckling strength and positioning metal rubber power consumption ring
CN106499077B (en) * 2016-09-20 2018-10-19 北京工业大学 Metal-rubber damper with limitation locking function and anti-buckling support combinations energy-consuming device
CN106499240B (en) * 2016-09-20 2019-06-21 北京工业大学 Telescopic anti-buckling support with multistage buckling strength and positioning metal rubber energy consumption ring

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