CN101718124A - Double-rectangular tube restraining type assembled buckling-restrained brace with H-shaped cross section - Google Patents

Double-rectangular tube restraining type assembled buckling-restrained brace with H-shaped cross section Download PDF

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Publication number
CN101718124A
CN101718124A CN200910259642A CN200910259642A CN101718124A CN 101718124 A CN101718124 A CN 101718124A CN 200910259642 A CN200910259642 A CN 200910259642A CN 200910259642 A CN200910259642 A CN 200910259642A CN 101718124 A CN101718124 A CN 101718124A
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China
Prior art keywords
steel
shaped
consumption
long bolt
rolled
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CN200910259642A
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Chinese (zh)
Inventor
郭彦林
江磊鑫
窦超
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清华大学
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Priority to CN200910259642A priority Critical patent/CN101718124A/en
Publication of CN101718124A publication Critical patent/CN101718124A/en

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Abstract

The invention relates to a double-rectangular tube restraining type assembled buckling-restrained brace with an H-shaped cross section, belonging to the technical field of structural engineering. The brace of the invention is characterized by being formed by assembling two cold-bending thin-walled section steel rectangular tubes and hot-rolled H section steel through a long bolt connecting piece, wherein the two cold-bending thin-walled section steel rectangular tubes are buckled and pressed on the web plate of the hot-rolled H section steel through the long bolt connecting piece to form a peripheral restraining member, and a restraining mechanism for the hot-rolled H section steel of an inner core is formed; the hot-rolled H section steel is provided with circular holes in any position in which the long bolt connecting piece passes through; and the two cold-bending thin-walled section steel rectangular tubes are provided with elliptical holes in the non-midspan positions in which the long bolt connecting piece passes through, and are provided with circular holes in the midspan position. The hot-rolled H section steel can be applied to the structure needing larger brace bearing capacity, and the cross section of the hot-rolled H section steel can achieve the total cross section buckling under the action of large oscillation, thereby effectively consuming the energy. In addition, the invention has the advantages of convenient construction, low manufacturing cost and simple manufacturing processes and can realize industrial mass production.

Description

The double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption supports
Technical field
The present invention relates to a kind of novel anti-buckling energy-consumption and support, belong to technical field of structural engineering.
Technical background
The design of multi-rise building structure lateral resisting is the core content of total design, so designer's unanimity is constantly being explored and sought new support system and braced structures.Facts have proved, anti-buckling energy-consumption supports the supporting member as many high-rise frame structures, not only have " support " and " power consumption " two kinds of effects, and the geological process of reduction structure effectively, be a kind of good energy-dissipating and shock-absorbing member that under geological process, shows.Under little shake effect, anti-buckling energy-consumption supports and keeps elasticity, thereby for agent structure provides enough rigidity, guarantees that the sidesway of main body frame meets design requirement; Under middle shake and big shake effect, anti-buckling energy-consumption supports and enters surrender, and by the surrender dissipation seismic energy of nuclear cross section in it, thereby the safety of protection main body frame is also effectively subdued earthquake response.Especially Japanese slope shake celestially with the mountain range earthquake of U.S. north after, the developed countries that anti-buckling energy-consumption is supported on many shakes such as America and Japan have obtained applying fast.In recent years, anti-buckling energy-consumption supports to be used in the heavy construction structure of China, in the high fortification intensity of earthquake zone, by the structure design personnel as one of best energy-dissipating and shock-absorbing member.
It is a kind of novel lateral resistant member that anti-buckling energy-consumption supports, and it is made up of kernel load-carrying member and peripheral constraint component two parts: inner core component generally adopts the steel of low-yield, directly bears the axial load effect; Peripheral constraint component is not directly born the axial compression effect, but it can improve the flexing load of inner core component to the effect of contraction of inner core component, make kernel portion that the total cross-section surrender take place under the external pressure effect, thereby improve the plumpness of member hysteretic loop and the energy dissipation capacity of member.
The anti-buckling energy-consumption that generally adopts on the present engineering at home and abroad supports, and is made up of peripheral concrete filled steel tube and inner core component mostly; Inner core component is general to adopt a block plate or steel plate welding and the compound section that forms, and kernel steel plate or component surface will brush one deck non-cohesive material, and and fill concrete between leave certain space.As everyone knows, for the welding compound section, because becoming fragile of welding material and heat affected zone material will have a strong impact on the power consumption effect of inner core component.Often under course under cyclic loading, the material of heat affected zone makes member ineffective with regard to brittle failure takes place under few cycle-index.Secondly, because strict clearance control is arranged between the concrete of confining part and the inner core component surface, the required precision strictness, manufacturing process is comparatively complicated, causes cost higher; Because concrete cast maintenance is arranged, fabrication cycle is longer, and is unfavorable for realizing industrialized mass production again.In addition, be the anti-buckling energy-consumption support of welding compound section for kernel, the kernel compound section is connected very complicated with steel frame, cause construction inconvenience.Therefore, seeking to make with simple installation, the anti-buckling energy-consumption support than high-bearing capacity and premium properties is arranged again is one of target of designer.
In order to overcome above-mentioned shortcoming, the author had also once proposed a kind of all-steel buckling-preventing energy-consuming and had supported [application number: 200910081817.5], mainly utilize four hot-rolled steel channels as peripheral constraint component, and by high-strength bolt four channel-section steels are coupled together, scatter as a whole and not when making its work.This combined type all steel cross section anti-buckling energy-consumption supports, and has realized site-assembled requirement, and hot-rolled steel section realized industrialized mass production, and cost of production is low, the shortcoming on having overcome common anti-buckling energy-consumption support manufacturing and having used.But, this anti-buckling energy-consumption of being made up of four hot-rolled groove-shape cross sections is supported, because its kernel compression-member adopts the yi word pattern steel plate, the load of being born is limited, is only applicable to the less demanding structure of support bearing power.And because two channel member openings in the nuclear plate outside are outside in being configured in, the moment of inertia of its opposing connection vertical pivot is less, thereby constraint efficient can not be not fully exerted.
For this reason, on the basis that above-mentioned all-steel buckling-preventing energy-consuming supports, the present invention proposes another kind of brand-new anti-buckling energy-consumption supports, being called the double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption supports, it utilizes ready-made light gauge cold-formed steel shape rectangular tube as peripheral constraint component, can improve constraint efficient significantly; Utilize hot rolled H-shapedly, can improve the kernel compression bearing as inner core component; Utilize long bolt hot rolled H-shaped be configured in both sides light gauge cold-formed steel shape rectangular tube and couple together, avoided ready-made and be welded to connect, be that a kind of assembling anti-buckling energy-consumption that can realize fully at building-site supports.This anti-buckling energy-consumption supports, not only can support as common anti-buckling energy-consumption, under earthquake, provide anti-side rigidity and earthquake energy for agent structure, thereby reduce earthquake response to guarantee the safety of agent structure, have more a lot of common anti-buckling energy-consumptions and support not available superiority.Leave certain clearance between kernel load-carrying member that general anti-buckling energy-consumption supports and the peripheral constraint component, thereby cause making the strict and technical requirements height of precision control, and the anti-buckling energy-consumption of this paper invention supports, peripheral constraint component and kernel load-carrying member compress by long bolt, be in tight contact condition between the two surface, do not have aforementioned preset clearance problem.Like this, when the inner core component pressurized, when assurance was expanded owing to its pool Sang Xiaoying, long bolt can play spring action and discharge this expansion, prevents that inner core component is stuck, thereby made its surrender power consumption.
This novel anti-buckling energy-consumption member, its advantage is: it has utilized hot rolled H-shaped as the kernel pressure-containing parts, its section area is bigger, applicable to the structure that anti-buckling energy-consumption support bearing power is had relatively high expectations, and H shape steel is a hot-roll forming, and the anti-buckling energy-consumption support of welding compared with kernel has better ductility; It can not only be realized hot rolled H-shaped complete effect of contraction more easily by selecting different cold-rolled forming section rectangular steel pipe cross sections for use, and can make anti-buckling energy-consumption support stable purposes such as reaching twin shaft; It utilizes the shaped steel of the present extensive use of China as raw material, and the facility of drawing materials is with low cost; Manufacturing process does not have welding, no on-site concrete is built, and only utilizes shaped steel to process, and has reduced processing cost, has simplified the manufacturing process that anti-buckling energy-consumption supports greatly, has reduced the requirement to the processing Personnel Skill Levels, helps realizing suitability for industrialized production.
Summary of the invention
The double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption that the present invention proposes supports, purpose is to provide a kind of brand-new fabricated support energy dissipation component, for main structure body provides the lateral resisting effect, and effectively power consumption under big shake effect, subdue geological process, the double simultaneously effect of structure that adjust in the anti-side rigidity of some directions; Aspect the formation that supports at anti-buckling energy-consumption, the outstanding feature that anti-buckling energy-consumption of the present invention supports is, kernel adopts hot rolled H-shaped, and its material crystal grain is careful, and power consumption is good with ductility; And support for common anti-buckling energy-consumption, the kernel load-carrying member often adopts the welding compound section, and the material of welding material and heat affected zone becomes fragile, and inner core component ductility reduces; In addition, peripheral constraint component adopts the double-rectangular tube that is configured in H shape steel web both sides and by the long bolt connection, it connects simple, constraint efficient height, and easy construction, and cost is low, and manufacturing process is simple, can realize industrialized mass production.
In addition, it is hot rolled H-shaped that the present invention adopts, its plate that constitutes the cross section can be before the surrender of member total cross-section unstability, thereby adopt double-rectangular tube internally to examine hot rolled H-shaped the constraint, the effect of contraction of main consideration double-rectangular tube can make the anti-buckling energy-consumption support that whole unstability does not take place, and does not mind the whole plate faces that retrained inner core component whether fully.Based on this principle, adopt double-rectangular tube to be close to the both sides of hot rolled H-shaped web, and adopt the long bolt of pretension that the three is coupled together.This Constraints Processing is simply more than the confinement mechanism of its common anti-buckling energy-consumption member; When the inner core component tension, kernel is hot rolled H-shaped can freely surrender power consumption, not retrained by peripheral member, when the hot rolled H-shaped pressurized of kernel, double-rectangular tube provides lateral restraint can not make its whole unstability not only for its H shape steel, and, prevent that peripheral constraint is too strong and inner core component is stuck, thereby its surrender is consumed energy because the spring action of long bolt can discharge hot rolled H-shaped web effectively owing to the lateral expansion that pool Sang Xiaoying produces is out of shape.
About beam ratio is the important parameter that anti-buckling energy-consumption supports, and it is the ratio that anti-buckling energy-consumption supports integral, flexible flexing load and kernel yield load, promptly
ζ = P cr P y = π 2 ( E 1 I 1 + E 2 I 2 ) / L 2 A 1 f y 1
It has reacted the power of peripheral constraint portions to the effect of contraction of kernel.The double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption that proposes for the present invention supports, and gets about beam ratio between 1.8-2.0, can guarantee that the periphery has enough effect of contractions.
The double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption that the present invention proposes supports, it is characterized in that: contain the first light gauge cold-formed steel shape rectangular tube (1), the second light gauge cold-formed steel shape rectangular tube (2) and hot rolled H-shaped, wherein: the first light gauge cold-formed steel shape rectangular tube (1) and the second light gauge cold-formed steel shape rectangular tube (2) are withheld on the described hot rolled H-shaped web by the long bolt connector, all offer circular port in described hot rolled H-shaped any position of being passed by described long bolt connector, at described two light gauge cold-formed steel shape rectangular tubes (1,2) circular port is offered in the span centre position of being passed by described long bolt connector, at described two light gauge cold-formed steel shape rectangular tubes (1,2) slotted eye is offered in the non-span centre position of being passed by described long bolt connector.Concrete perfusion in described two light gauge cold-formed steel shape rectangular tubes (1,2).
The double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption that the present invention proposes supports, and can provide good lateral resisting effect for the multi-rise building structure, and under big shake effect, can reach the total cross-section surrender, thus effectively power consumption.In addition, this anti-buckling energy-consumption support has utilized hot rolled H-shaped as the kernel pressure-containing parts, and its section area is bigger, applicable to the structure that anti-buckling energy-consumption support bearing power is had relatively high expectations, and H shape steel is a hot-roll forming, and the anti-buckling energy-consumption support of welding compared with kernel has better ductility.The more important thing is that it is a prefabricated member, be easy to processing and install, can effectively reduce structural cost, is that a kind of anti-buckling energy-consumption of performance brilliance supports.
Description of drawings
Fig. 1 is that double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption of the present invention supports schematic three dimensional views.
Fig. 2 is the span centre A-A schematic cross-section that double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption of the present invention supports.
Fig. 3 is the non-span centre B-B schematic cross-section that double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption of the present invention supports.
Fig. 4 is the H shape steel perforate detail drawing that double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption of the present invention supports.
Fig. 5 is the light gauge cold-formed steel shape rectangular tube perforate detail drawing that double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption of the present invention supports.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In as Fig. 1~5:
1-light gauge cold-formed steel shape rectangular tube 1
2-light gauge cold-formed steel shape rectangular tube 2
3-is hot rolled H-shaped
4-long bolt connector
As shown in Figure 1 to Figure 3, anti-buckling energy-consumption supports by two light gauge cold-formed steel shape rectangular tubes 1~2 and kernel hot rolled H-shaped 3 and forms.Two light gauge cold-formed steel shape rectangular tubes 1~2 are withheld web both sides hot rolled H-shaped 3 by long bolt connector 4, thereby form peripheral constraint component.If concrete perfusion in light gauge cold-formed steel shape rectangular tube 1 and light gauge cold-formed steel shape rectangular tube 2 then can improve the bearing capacity and the rigidity of peripheral constraint greatly, reduce the sectional dimension of peripheral light gauge cold-formed steel shape rectangular tube.
Long bolt connector 4 need pass the web of light gauge cold-formed steel shape rectangular tube 1, light gauge cold-formed steel shape rectangular tube 2 and hot rolled H-shaped 3, and the perforate situation as shown in Figure 4 and Figure 5.Circular hole is all offered in any position of being passed by long bolt connector 4 on hot rolled H-shaped 3 web; To be offered elliptical aperture at light gauge cold-formed steel shape rectangular tube 1 and light gauge cold-formed steel shape rectangular tube 2 by the non-span centre position that long bolt connector 4 passes, so that guarantee between light gauge cold-formed steel shape rectangular tube 1,2 and hot rolled H-shaped 3 can be along axially distortion and not constrained each other separately; To be offered circular port at light gauge cold-formed steel shape rectangular tube 1 and light gauge cold-formed steel shape rectangular tube 2 by the span centre position that long bolt connector 4 passes,, prevent that periphery is along axial slip with the effect of the spacing card of double as.If concrete perfusion in light gauge cold-formed steel shape rectangular tube 1 and the light gauge cold-formed steel shape rectangular tube 2 then will be reserved oval duct, reserve circular duct in the span centre position in non-span centre position when concrete perfusion, be convenient to the insertion of long bolt connector 4.
Anti-buckling energy-consumption supports the joint construction with frame part, supports identical with other anti-buckling energy-consumption.
Experiment showed, that the present invention has following obvious advantage:
It can be for agent structure provides anti-side rigidity and earthquake energy under geological process, thereby falls the low seismic response of structure, the safety of protection agent structure under geological process;
It utilizes the shaped steel of China's extensive use as raw material, the facility of drawing materials, and cost is lower;
Its production process is simple, only shaped steel processed, and the welding operation, processing charges is lower, and is also not high to processing Personnel Skill Levels's requirement;
It is a kind of fabricated member, and all manufacturing procedures can both be finished in factory, and such as concrete perfusion in the light gauge cold-formed steel shape rectangular tube, offer duct etc., assembly unit at the construction field (site) is very quick and easy, flexible.
Its inner core component utilizes hot rolled H-shaped Axial Compression Loads power, do not resemble common support and adopt the welding compound section, thereby its ductility is very good. If utilize the I-steel of welding as kernel, then welding residual stress and residual deformation will have influence on machining accuracy and the ductile performance of buckling-restrained energy-dissipation greatly.
Its interior nuclear cross section is hot rolled H-shaped, and available cross section specification is wide in range, can realize large tonnage yield load.

Claims (2)

1. the double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption supports, and it is characterized in that, contains the first light gauge cold-formed steel shape rectangular tube (1), the second light gauge cold-formed steel shape rectangular tube (2) and hot rolled H-shaped, wherein:
The first light gauge cold-formed steel shape rectangular tube (1) and the second light gauge cold-formed steel shape rectangular tube (2) are withheld on the described hot rolled H-shaped web by the long bolt connector, all offer circular port in described hot rolled H-shaped any position of being passed by described long bolt connector, offered circular port at described two light gauge cold-formed steel shape rectangular tubes (1,2) by the span centre position that described long bolt connector passes, offered slotted eye by the non-span centre position that described long bolt connector passes at described two light gauge cold-formed steel shape rectangular tubes (1,2).
2. double-rectangular pipe restraint H-shaped section assembling type bending anti-buckling energy-consumption according to claim 1 supports, and it is characterized in that concrete perfusion in described two light gauge cold-formed steel shape rectangular tubes (1,2).
CN200910259642A 2009-12-21 2009-12-21 Double-rectangular tube restraining type assembled buckling-restrained brace with H-shaped cross section CN101718124A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101974948A (en) * 2010-10-15 2011-02-16 清华大学 Double-rectangular tube buckled assembled buckling-restrained bracing member
CN101974947A (en) * 2010-10-15 2011-02-16 清华大学 H-shaped section fabricated buckling-restrained brace component
CN101982624A (en) * 2010-10-15 2011-03-02 清华大学 Buckling-resistant supporting element bound by four square pipes
CN102493571A (en) * 2011-12-19 2012-06-13 苗启松 Multistage parallel anti-bending support
CN102817422A (en) * 2012-08-31 2012-12-12 清华大学 Prestressed concrete constraining buckling-restrained brace
CN104508220A (en) * 2012-08-03 2015-04-08 新日铁住金工程技术株式会社 Axially yielding elasto-plastic hysteresis brace and vibration-damping steel-frame structure
CN105002995A (en) * 2015-05-29 2015-10-28 重庆大学 Steel bar prestressed steel pipe concrete supporter
CN105442756A (en) * 2015-12-17 2016-03-30 中冶建筑研究总院有限公司 Combined special-shaped column, structure system provided with column, and construction method of structure system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101974948A (en) * 2010-10-15 2011-02-16 清华大学 Double-rectangular tube buckled assembled buckling-restrained bracing member
CN101974947A (en) * 2010-10-15 2011-02-16 清华大学 H-shaped section fabricated buckling-restrained brace component
CN101982624A (en) * 2010-10-15 2011-03-02 清华大学 Buckling-resistant supporting element bound by four square pipes
CN101974948B (en) * 2010-10-15 2012-06-20 清华大学 Double-rectangular tube buckled assembled buckling-restrained bracing member
CN101974947B (en) * 2010-10-15 2012-10-10 清华大学 H-shaped section fabricated buckling-restrained brace component
CN102493571A (en) * 2011-12-19 2012-06-13 苗启松 Multistage parallel anti-bending support
CN102493571B (en) * 2011-12-19 2013-09-18 苗启松 Multistage parallel anti-bending support
US9447596B2 (en) 2012-08-03 2016-09-20 Nippon Steel & Sumikin Engineering Co., Ltd. Axially yielding elasto-plastic hysteresis brace and vibration-damping steel-frame structure
CN104508220A (en) * 2012-08-03 2015-04-08 新日铁住金工程技术株式会社 Axially yielding elasto-plastic hysteresis brace and vibration-damping steel-frame structure
CN104508220B (en) * 2012-08-03 2015-11-25 新日铁住金工程技术株式会社 The axial surrender delayed support member of type elastoplasticity and vibration-damp steel shelf structure thing
CN102817422B (en) * 2012-08-31 2014-07-23 清华大学 Prestressed concrete constraining buckling-restrained brace
CN102817422A (en) * 2012-08-31 2012-12-12 清华大学 Prestressed concrete constraining buckling-restrained brace
CN105002995A (en) * 2015-05-29 2015-10-28 重庆大学 Steel bar prestressed steel pipe concrete supporter
CN105442756A (en) * 2015-12-17 2016-03-30 中冶建筑研究总院有限公司 Combined special-shaped column, structure system provided with column, and construction method of structure system
CN105442756B (en) * 2015-12-17 2018-01-05 中冶建筑研究总院有限公司 A kind of combined special-shaped column, the structural system and its construction method for being equipped with the post

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Open date: 20100602