CN104947826B - Self-reset anti-flexure support device - Google Patents

Self-reset anti-flexure support device Download PDF

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Publication number
CN104947826B
CN104947826B CN201510329670.2A CN201510329670A CN104947826B CN 104947826 B CN104947826 B CN 104947826B CN 201510329670 A CN201510329670 A CN 201510329670A CN 104947826 B CN104947826 B CN 104947826B
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plate
constraint
reset
core
fixed
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CN104947826A (en
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王涛
黄俊奎
孟丽岩
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Heilongjiang University of Science and Technology
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Heilongjiang University of Science and Technology
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Abstract

The present invention relates to a kind of Self-reset anti-flexure support device, the Self-reset anti-flexure support device, including external constraint unit, inner core and resetting means.The resetting means is back-moving spring component, and the external constraint unit is used to constrain inner core flexural deformation, and the back-moving spring component is used for the stretching or compression for recovering inner core.The present invention can produce a reaction force after being deformed using back-moving spring component using spring stress and be resetted, prestressing force need not be applied, its residual deformation under big shake can be reduced on the basis of ensureing anti-buckling support with good energy dissipation capacity, to realize predetermined reset effect.With pre-stress type self reset curvature-prevention support phase ratio, reset function when support is drawn, pressed can be more easily realized.And the present invention is simple in construction, cheap, processing and fabricating is convenient, is easy to engineering popularization and application.

Description

Self-reset anti-flexure support device
Technical field
Supported the present invention relates to a kind of new building structure energy-consumption shock-absorption device, more particularly to a kind of self reset curvature-prevention Device.
Background technology
Traditional bracing members can improve the lateral rigidity and bearing capacity of building structure.However, in the presence of macroseism, branch Entirety or local compression flexing easily occur for support, significantly reduce the anti-seismic performance of structure.
Anti-buckling support is that on the basis of traditional bracing members, inner core flexural deformation is constrained using outsourcing constraint element, with The total cross-section surrender power consumption of the power consumption section of inner core is realized, while not occurring complete buckling.Anti-buckling support has taken into account traditional support With metal damper dual-use function, the earthquake response of structure can be efficiently reduced, the anti-seismic performance of structure is improved.However, anti- Yield characteristic of the buckling support based on steel consumes energy, and causes to support the generation of residual deformation under geological process.Excessive remnants Deformation, not only influences the normal of structure to use, can also increase the rehabilitation cost of structure.
In order to solve the problems, such as the residual deformation of anti-buckling support presence, home and abroad scholar adds in traditional anti-buckling support Self-resetting system is filled, reduces the residual deformation of anti-buckling support with this.Patent No. CN101824922 patent application is proposed Using common steel strand wires as the buckling-resistant support structure of the system of reset, its prestress wire is anchored at inner and outer sleeves two ends On end plate, in inner and outer sleeves after occurring relative displacement, sleeve and inner core are retracted into original position by steel strand wires.The support can be with The residual deformation of traditional anti-buckling support is eliminated, still, effective application of structural initial pre stress is to ensure the key that the support resets, And initial value should be greater than inner core yield force more than 1.3 times.Some scholars propose with marmem make resetting means, but It is that marmem has that material price is expensive, make.
The content of the invention
It is existing to solve it is an object of the invention to provide a kind of Self-reset anti-flexure support device of use spring member The problem of anti-buckling support meanss need to apply prestressing force and high cost in technology.
For achieving the above object, the technical solution adopted in the present invention is:
The Self-reset anti-flexure support device, including external constraint unit, inner core and resetting means, the resetting means For back-moving spring component, the external constraint unit is used to constrain inner core flexural deformation, and the back-moving spring component is used to recover The stretching or compression of inner core.
As shown from the above technical solution, the present invention can produce one after being deformed using back-moving spring component using spring stress Reaction force is resetted, and without applying prestressing force, and spring member is cheap, reduces whole anti-buckling support meanss Cost.
It is preferred that, the inner core includes inner core plates, and the inner core plates both sides are provided with the connection of connection exterior building structure Device.
It is preferred that, the external constraint unit includes superposed upper constraint element and the lower constraint list positioned at bottom Member, leaves gap between the upper constraint element and lower constraint element, the inner core plates are arranged in the gap;The outside Constraint element has two ends, and wherein one end is fixed in inner core plates by the first connecting plate, and the other end passes through the second connection Plate is connected with back-moving spring component.
It is preferred that, the back-moving spring component includes the 3rd connecting plate, dividing plate and some guide posts, second connection Plate, the 3rd connecting plate and dividing plate include upper plate and lower plate, and the 3rd connecting plate upper plate and the 3rd connecting plate lower plate are solid respectively Due to the upper and lower surface of inner core plates same position, the dividing plate upper plate and dividing plate lower plate are individually fixed in inner core plates same position Upper and lower surface, the second connecting plate upper plate is fixed on one end of constraint element, and the second connecting plate lower plate is corresponding One end of lower constraint element is fixed on, gap is left between the second connecting plate upper plate and the second connecting plate lower plate, it is described interior Core plate passes through and some perforates is provided with the gap, the dividing plate, and some guide posts pass through the perforate, two ends difference Be fixed on the 3rd connecting plate and the second connecting plate, on the guide post be located between the second connecting plate and dividing plate and dividing plate with Part between 3rd connecting plate is cased with spring, and the spring is in the free state without external force in original state.
It is preferred that, the inner core plates arranged on left and right sides is each provided with some cushion blocks, the cushion block be fixed on constraint element or On lower constraint element.
It is preferred that, the inner core plates include upper linkage section, lower linkage section, upper strengthening segment and lower strengthening segment and surrender section, From the upper linkage section to upper strengthening segment to surrender section, cross-sectional area is tapered into, from the lower linkage section to lower strengthening segment To surrender section, cross-sectional area is tapered into.
It is preferred that, the external constraint unit includes four square steel tubes, the upper constraint element and lower constraint element by It is fixedly connected between the left and right square steel tube composition placed side by side, every two steel pipes of four square steel tubes.
It is preferred that, the 3rd connecting plate and dividing plate are fixed in the upper linkage section of inner core plates or lower linkage section.
It is preferred that, the guide post, which has, is each provided with two perforates on four, dividing plate upper plate and dividing plate lower plate, two guiding Perforate one end of bar through dividing plate upper plate is fixed on the 3rd connecting plate upper plate, and the other end is fixed on the second connecting plate upper plate, Another two guide posts are fixed in the 3rd connecting plate lower plate through perforate one end of dividing plate lower plate, and the other end is fixed on the second connection In plate lower plate.
It is preferred that, the spring is compression spring.
The present invention reduces it under big shake on the basis of can having good energy dissipation capacity ensureing anti-buckling support Residual deformation, to realize predetermined reset effect.With pre-stress type self reset curvature-prevention support phase ratio, can more easily it realize Reset function when support is drawn, pressed.And the present invention is simple in construction, cheap, processing and fabricating is convenient, being easy to engineering to promote should With.
Brief description of the drawings
Fig. 1 is the structural representation of the inner core of one embodiment of the present of invention;
Fig. 2 is the structural representation of one embodiment of the present of invention;
Fig. 3 is Fig. 2 1-1 sectional views;
Fig. 4 is the mechanical model figure of the simplification of one embodiment of the present of invention.
Embodiment
The inventive method is described further with reference to the accompanying drawings and examples.
In the one embodiment for the Self-reset anti-flexure support device that the present invention is provided, the self reset curvature-prevention support Device includes external constraint unit, inner core and resetting means, and the resetting means is back-moving spring component, the external constraint list Member is used to constrain inner core flexural deformation, and the back-moving spring component is used for the inner core after making to be elongated or shortening and is returned to start bit Put.
The present invention can produce a reaction force after being deformed using back-moving spring component using spring stress and be resetted, nothing Prestressing force need to be applied, and spring member is cheap, reduces the cost of whole anti-buckling support meanss.
The inner core described in some preferred embodiments of self reset curvature-prevention device includes inner core plates, the inner core plates two Side is provided with the attachment means of connection exterior building structure.
Further, the inner core can use structure as shown in Figure 1, wherein, inner core plates 3 include upper linkage section 304, Lower linkage section 305, upper strengthening segment 303 and lower strengthening segment 302 and surrender section 301, from the upper linkage section 304 to upper strengthening segment 303 to surrender section, and cross-sectional area is tapered into, from the lower linkage section 305 to lower strengthening segment 302 to surrender section, cross section Area is gradually reduced.
In this preferred embodiment, the inner core plates 3 use the structure of yi word pattern variable cross-section, in order to ensure unconfinement section Will not occur flexing, in other embodiments, upper linkage section 304, lower linkage section 305, upper strengthening segment 303 and lower strengthening segment 302 Cross section inner core plates can also be used.As the preferred embodiments of the present invention, using the knot of the gradient variable cross-section of yi word pattern three Structure, can reduce the section of inner core on the whole, so as to reduce the yield strength of inner core, adapt to current spring member rigidity little Situation.In addition, this structure can ensure upper linkage section 304, the size of lower linkage section 305 becomes big relatively, it can set here Multiple springs are put to constitute back-moving spring component.In addition, the section of gradual change, which is also prevented from inner core plates 3, occurs brittle failure.
Wherein, inner core plates 3 can be connected using the connecting plate 1 shown in Fig. 1 with exterior building structure, the connecting plate 1 Multiple screws are provided with, to facilitate realization to be connected with exterior building frame structure.Connecting plate also can select T-shaped according to actual needs The patterns such as plate.
Optionally, inner core plates 3 use low yield point steel plate.
In some preferred embodiments of the present invention, the external constraint unit includes superposed upper constraint element With the lower constraint element positioned at bottom, gap is left between the upper constraint element and lower constraint element, the inner core plates are set In the gap;The external constraint unit has two ends, and wherein one end is fixed on inner core plates by the first connecting plate On, the other end is connected by the second connecting plate with back-moving spring component.
In other embodiments of the invention, external constraint unit can also both sides all connect back-moving spring component, as Preferred embodiment, only set back-moving spring component to be not only simple in structure in side, and back-moving spring structure is set with two ends Part is compared to that can increase the rigidity of reset system, and reset effect is more preferable.Because being respectively provided with back-moving spring structure at constraint element two ends The substantial two groups of back-moving springs of part have reformed into series connection, and rigidity on the contrary can be also smaller than the rigidity of one group of back-moving spring.
Further, in some preferred embodiments, the inner core plates arranged on left and right sides is each provided with some cushion blocks, institute Some cushion blocks are stated to be fixed on constraint element or lower constraint element.It is preferred that, the spacing between the cushion block is 10cm, so Cushion block can not only control the gap between constraint element and lower constraint element but also can be with the transversely deforming of operative constraint inner core plates.
In some preferred embodiments of the external constraint unit of the present invention, Fig. 2 and Fig. 3 are refer to, the outside is about Shu Danyuan includes four square steel 8, and the upper constraint element and lower constraint element are constituted by the left and right square steel tube 8 placed side by side, It is fixedly connected between every two steel pipes of four square steel tubes.Two square steel tubes above of inner core plates 3 and the two of lower section In the middle of root square steel tube, one end of four square steel is fixed on the first connecting plate 4, and first connecting plate 4 is fixed on inner core On plate 3.In wherein some embodiments, first connecting plate 4 includes upper plate and lower plate, the first connecting plate upper plate and the One connecting plate lower plate is respectively perpendicular on the upper and lower surface for being welded on inner core plates 3, two square steel and the first connecting plate upper plate of top Plate weld under welding, two square steel of lower section and the first connecting plate.In other embodiments, the first connecting plate 4 and inner core plates 3 Integrally formed structure can be taken.
The present invention some preferred embodiments in, pad 11 is arranged on the both sides of inner core plates 3, be welded on above or below Square steel tube 8 on.
Optionally, two adjacent square steel tubes 8 are welded to connect by bar 9.
It should be noted that wherein square steel tube 8 can also use the steel pipe of other shapes, the quantity of square steel tube is also not necessarily limited to Four, material does not also limit steel, as long as can be to the structures for having bent effect of contraction of inner core plates 3 all in the protection of the present invention Scope.
As preferred embodiment, using four steel pipes as external constraint unit, it not only can effectively prevent interior Flexing occurs for core plate, and can improve the axial rigidity of external constraint unit.Because external constraint unit is wanted and back-moving spring Component is composed in series total reset system, if so the axial rigidity of external constraint unit is bigger, the rigidity of reset system is just Bigger, the effect of Self-resetting is better.
In some preferred embodiments of the present invention, Fig. 2 is refer to, the back-moving spring component includes the 3rd connecting plate 5th, dividing plate 2 and some guide posts 10, second connecting plate 7, the 3rd connecting plate 5 and dividing plate 2 include upper plate and lower plate, described 3rd connecting plate upper plate and the 3rd connecting plate lower plate are individually fixed on the upper and lower surface of the same position of inner core plates 3, the dividing plate Plate and dividing plate lower plate are individually fixed in the upper and lower surface of the same position of inner core plates 3, and the second connecting plate upper plate is fixed on about On Shu Danyuan one end, the corresponding one end for being fixed on lower constraint element of the second connecting plate lower plate, second connecting plate Leave gap between plate and the second connecting plate lower plate, the inner core plates 3 pass through be provided with the gap, the dividing plate 2 it is some Perforate, some guide posts 10 pass through the perforate, and two ends are separately fixed on the 3rd connecting plate 5 and the second connecting plate 7, institute The part on guide post 10 being located between the second connecting plate 7 and dividing plate 2 and between the connecting plate 5 of dividing plate 2 and the 3rd is stated to be cased with Spring 6, the spring 6 is not passed through the dividing plate 2, and the free state without external force is in original state.
In some preferred embodiments of the present invention, the back-moving spring component is included on four guide posts 10, dividing plate Two perforates are each provided with plate and dividing plate lower plate, perforate one end of two guide posts 10 through dividing plate upper plate is fixed on the 3rd company On fishplate bar upper plate, the other end is fixed on the second connecting plate upper plate, and another two guide posts are consolidated through perforate one end of dividing plate lower plate It is scheduled in the 3rd connecting plate lower plate, the other end is fixed in the second connecting plate lower plate.
In an initial condition, inner core plates 3 do not stress, and spring 6 is in the free state not stressed.Under external force, it is interior Core plate 3, which will be produced, to be drawn, will produce relative displacement between compressive strain, with the dividing plate 2 and external constraint unit of the fixation of inner core plates 3, from And force the spring 6 between the connecting plate 7 of dividing plate 2 and second and the 3rd connecting plate 5 to deform, the anti-of generation is deformed by spring 6 Active force pushes back the deformation of inner core plates 3, resets support.
When inner core plates 3 be in pressured state when, dividing plate 2 and and the second connecting plate 7 between four springs 6 produce by buckling Four springs between shape, the connecting plate 5 of dividing plate 2 and the 3rd do not stress, shown in the mechanical model such as Fig. 4 (a) in this stage, stress spring 6 connect with external constraint unit.When inner core plates 3 are in tension state, four springs 6 between the connecting plate 5 of dividing plate 2 and the 3rd are produced Four springs 6 between raw compressive deformation, the connecting plate 7 of dividing plate 2 and second are not stressed, and stress spring 6 is connected with external constraint unit, The mechanical model in this stage such as Fig. 4 (b).
Optionally, the spring 6 can use compression spring.
In some preferred embodiments of the present invention, the 3rd connecting plate and dividing plate are fixed on the upper connection of inner core plates In section or lower linkage section.It is convenient to place back-moving spring component because upper linkage section or lower linkage section are relatively large sized.Fig. 2 institutes In the embodiment shown, the 3rd connecting plate 5 and dividing plate 2 are fixed in lower linkage section 305, and second connecting plate 7 is also set In lower linkage section 305.
It should be understood that, although this specification is been described by according to embodiment, but not each embodiment is only only comprising one Vertical technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should be by specification As an entirety, the technical solutions in the various embodiments may also be suitably combined, formed it will be appreciated by those skilled in the art that Other embodiment.Those listed above is a series of to be described in detail only for the specific of possible embodiments of the invention Illustrate, they simultaneously are not used to limit the scope of the invention, all Equivalent embodiments made without departing from skill spirit of the present invention Or change should be included within the scope of the present invention.

Claims (7)

1. a kind of Self-reset anti-flexure support device, including external constraint unit, inner core and resetting means, it is characterised in that institute Resetting means is stated for back-moving spring component, the external constraint unit is used to constrain inner core flexural deformation, the back-moving spring structure Part is used for the stretching or compression for recovering inner core;
The inner core includes inner core plates, and the inner core plates both sides are provided with the attachment means of connection exterior building structure;
The external constraint unit includes superposed upper constraint element and the lower constraint element positioned at bottom, the upper constraint Gap is left between unit and lower constraint element, the inner core plates are arranged in the gap;The external constraint unit has Two ends, wherein one end are fixed in inner core plates by the first connecting plate, and the other end passes through the second connecting plate and back-moving spring Component is connected;
The back-moving spring component includes the 3rd connecting plate, dividing plate and some guide posts, second connecting plate, the 3rd connecting plate Include upper plate and lower plate with dividing plate, it is same that the 3rd connecting plate upper plate and the 3rd connecting plate lower plate are individually fixed in inner core plates The upper and lower surface of position, the dividing plate upper plate and dividing plate lower plate are individually fixed in the upper and lower surface of inner core plates same position, institute One end that the second connecting plate upper plate is fixed on constraint element is stated, the second connecting plate lower plate is corresponding to be fixed on lower constraint list One end of member, leaves gap, between the inner core plates are described between the second connecting plate upper plate and the second connecting plate lower plate Some perforates are provided with gap, the dividing plate, some guide posts pass through the perforate, and two ends are separately fixed at the 3rd connection On plate and the second connecting plate, it is located on the guide post between the second connecting plate and dividing plate and between dividing plate and the 3rd connecting plate Part be cased with spring, the spring is in the free state without external force in original state.
2. the Self-reset anti-flexure support device described in any one according to claim 1, it is characterised in that the inner core plates Arranged on left and right sides is each provided with some cushion blocks, and the cushion block is fixed on constraint element or lower constraint element.
3. Self-reset anti-flexure support device according to claim 1, it is characterised in that the inner core plates include upper connection Section, lower linkage section, upper strengthening segment and lower strengthening segment and surrender section, it is horizontal from the upper linkage section to upper strengthening segment to surrender section Area of section is tapered into, and from the lower linkage section to lower strengthening segment to surrender section, cross-sectional area is tapered into.
4. Self-reset anti-flexure support device according to claim 1, it is characterised in that the external constraint unit includes Four square steel tubes, the upper constraint element and lower constraint element are constituted by the left and right square steel tube placed side by side, four sides It is fixedly connected between every two steel pipes of steel pipe.
5. Self-reset anti-flexure support device according to claim 3, it is characterised in that the 3rd connecting plate and dividing plate It is fixed in the upper linkage section of inner core plates or lower linkage section.
6. Self-reset anti-flexure support device according to claim 1, it is characterised in that the guide post has four, every Two perforates are each provided with plate upper plate and dividing plate lower plate, perforate one end of two guide posts through dividing plate upper plate is fixed on the 3rd On connecting plate upper plate, the other end is fixed on the second connecting plate upper plate, and another two guide posts pass through perforate one end of dividing plate lower plate It is fixed in the 3rd connecting plate lower plate, the other end is fixed in the second connecting plate lower plate.
7. Self-reset anti-flexure support device according to claim 1, it is characterised in that the spring is compression spring.
CN201510329670.2A 2015-06-15 2015-06-15 Self-reset anti-flexure support device Active CN104947826B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350677B (en) * 2015-11-11 2017-07-18 东南大学 A kind of combined type compresses sex vesicle foam aluminium composite material damper
CN110616629B (en) * 2019-09-29 2021-03-30 哈尔滨工业大学 Speed locking type self-resetting buckling-restrained brace

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI454608B (en) * 2011-01-11 2014-10-01 Dual - core pre - tensioned self - resetting energy dissipation bracing device
US8590258B2 (en) * 2011-12-19 2013-11-26 Andrew Hinchman Buckling-restrained brace
CN103981965A (en) * 2014-04-11 2014-08-13 北京工业大学 Self-resetting-prestress bending-preventing support of channel-steel assembled steel structure
CN104005487A (en) * 2014-04-12 2014-08-27 北京工业大学 Self-resetting and prestressed buckling-restrained brace of I-shaped angle steel assembled-type steel structure
CN204753876U (en) * 2015-06-15 2015-11-11 王涛 From buckling restrained brace device that restores to throne
CN204753877U (en) * 2015-06-15 2015-11-11 王涛 Spring is from restoring to throne buckling restrained brace device

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