CN109296102A - A kind of shear connector Damper Braces can be realized Stiffness Deterioration and energy consumption - Google Patents
A kind of shear connector Damper Braces can be realized Stiffness Deterioration and energy consumption Download PDFInfo
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- CN109296102A CN109296102A CN201811338728.XA CN201811338728A CN109296102A CN 109296102 A CN109296102 A CN 109296102A CN 201811338728 A CN201811338728 A CN 201811338728A CN 109296102 A CN109296102 A CN 109296102A
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- shear connector
- damper
- support
- bolt
- steel pipe
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention proposes a kind of shear connector Damper Braces that can be realized Stiffness Deterioration and energy consumption, anti-side rigidity is provided as common support when it is below certain axle power, it can be realized Stiffness Deterioration and when its internal force reaches certain level with built-in damper dissipation energy, it realizes integrally-built system transform, is conducive to the ductility of structure.A kind of shear connector Damper Braces can be realized Stiffness Deterioration and energy consumption, it is made of the two sections of supports connected with Bolt and embedded damper, this two sections supports are nested against one another, can consume energy with respect to rubbing, and with the damper with wherein one section support connection after Bolt destruction.The present invention cuts by bolt and realizes Stiffness Deterioration, changes the integrally-built basic cycle on the one hand to reduce the seismic influence coefficient under short cycle earthquake, the axial compression ratio of one side structural column is greatly reduced to guarantee its ductility.The structural form convenient transportation that support is integrally segmented by the present invention, the form of being bolted can replace after being easily installed and destroying, and meet the requirement of fabricated construction and ductile structure.
Description
Technical field
The invention belongs to the energy dissipation brace fields used in high-level structure, and in particular to one kind can be realized Stiffness Deterioration and consumption
The shear connector Damper Braces of energy.
Background technique
For high-rise and super high-rise building, its response under various external actions is controlled, guarantees its story drift, top
The indexs such as spot speed meet code requirement to guarantee that structure normal use and safety are vital, therefore a large amount of in recent years new
Type structural system has obtained extensive utilization.
Increase the anti-side rigidity of structure in novel mechanism system, often uses Core Walls Structure and frame-brace structure
The structure type of collaborative work, and design quite big for integrally-built stiffness effect specific gravity, therefore supporting is supported in frame
Understand the overall performance of largely control structure.
Currently, the application form multiplicity being supported in high-rise and super high rise structure, for common support, is in elastic stage
The case where overall structure provides anti-side rigidity, is different from support tension since out-of-plane deformation may occur when its compression, and then is led
Unstability is caused, still in elasticity, component energy dissipation capacity is lower for the bearing capacity decline supported at this time and most of material.It is this non-thread
The inconsistent phenomenon of sexual stage component tensile and compressive property cause common support surrender after structure energy dissipation capacity and bearing capacity substantially
It reduces, influences the ductility of structure, generally the section of common support is larger in Super High-rise Structure Design, therefore does not consider buckling only
Rigidity is provided, this enables to the anti-side rigidity of structure to increase but be unfavorable for integrally-built ductile fracture.
It is widely available the anti-buckling support of utilization in recent years, can be applied to high-rise or middle low-rise freame structure, rack net
The large-span structures such as shell and bridge structure, and it is suitable for the strengthening reconstruction of new building and existing building.Anti-buckling support master
It to be made of inner core component and peripheral member.Inner core component generally uses the steel plate or hot-rolled steel section or group of the high ductility of low-yield
Welded unit is closed, directly the effect of receiving xial feed；Peripheral constraint component is primarily subjected to moment of flexure caused by kernel lateral deformation, and
Axle power is not born directly.Vertical and horizontal should there are appropriate gaps between inner core component and peripheral constraint component, and with without viscous
Material isolation is tied, with peripheral constraint component longitudinal contact or due to kernel steel poisson effect occurs for kernel when support being prevented to be pressurized
Cause lateral contact, this contact will lead to peripheral constraint component and be also subjected to part axle power, make peripheral constraint component premature degradation
Or kernel intensity is more than desired value, is had an adverse effect to frame.
The type of curvature-prevention support component is more, is divided according to the material of peripheral constraint component, mainly has 3 seed types, i.e.,
Concrete restricted type, concrete filled steel tube restricted type and all steel restricted type；According to the building form of peripheral constraint component, anti-buckling branch
Support can be divided into monoblock type and assembled.The peripheral constraint component of concrete restricted type and the anti-buckling support of concrete filled steel tube restricted type
Generally monoblock type, concrete situ wet operation heavy workload, the precision between concrete and kernel steel plate is more difficult to control, if work
Journey needs to design large-tonnage and the anti-buckling component of overlength, will be brought to transport with installation using the anti-buckling support of monoblock type larger
Difficulty.The peripheral constraint component of the anti-buckling support of assembled is usually assemblied by fashioned iron or steel plate by bolt, and precision is held
Easy to control, in-site installation is convenient, and the kernel with changing surrender is only needed after earthquake, and peripheral constraint component can realize recycling, and
Fashioned iron and steel plate are cheap, and form is also various.
Current anti-buckling support has bearing capacity and does not decline or decline on a small quantity and consume energy by steel plasticity, leads to
The connection type for crossing change component also can be realized the requirement of fabricated construction.But support presence meeting so that structural elements it is interior
Benefit distribution compares frame structure, the axial compression ratio of frame column can increase in frame-brace structure, and larger based on axle power
Axial compression ratio be detrimental to structure ductility.For arranging the frame-brace structure of anti-buckling support, due to anti-buckling support
Axial carrying capacity do not degenerate, the axial compression ratio of frame column is higher, in elasticity or non-linear not strong stage, this stress form
It can make full use of material, but when under the extremely rare geological process met or more, frame column may be due to higher axial compression ratio more
Early to enter surrender and destroy, bearing capacity decline also faster can seriously affect the ductility of vertical member, be unfavorable for overall structure
Ductility, may finally cause integrally-built to collapse too early.
For the external action bring energy that dissipates, without the rigidity of change structure itself, viscous liquid damper becomes
A kind of selection.The characteristics of viscous liquid damper is built-in liquid itself without computable rigidity, does not influence structural modal
With original design, structural damping can be increased merely；Hysteresis loop is oval, guarantee damper in the state of maximum displacement by
Power is zero, and stress is maximum in the case that displacement is zero, and the axle power of such other components is under control；It can make in earthquake and strong wind
With lower reuse；Sophistication, service life can guarantee.But viscous liquid damper can because of the characteristic of built-in liquid
Movement can occur under the external action compared with low frequency but damping force is hardly provided, therefore it is proposed that increase wind on damper
Device or device for fusing are limited, makes to be supported on wind load using frictional force or safety plate or small shake acts on the lower work as normal support
Make, then plays damper effect, referred to as limited displacement damper later.
Current limited displacement damper construction is more complicated, it has not been convenient to in-site installation, and the bearing capacity being capable of providing is smaller,
Rigidity can only be provided under wind load or small shake.Therefore the present invention proposes a kind of shear connector resistance that can be realized Stiffness Deterioration and energy consumption
Viscous liquid damper is placed in the shear connector support of sectional by Buddhist nun's support, rarely occurred earthquake and it is following when with it is normal
Support equally plays and provides the effect of anti-side rigidity, and in pole, shear connector destroys and plays damper effect when rarely occurred earthquake or more,
System transition of the structural system under the effect of pole rarely occurred earthquake can be achieved, bottom axial compression ratio is guaranteed to control structure Whole Response
The ductility of larger frame column is of great significance.
Summary of the invention:
On the basis of existing common support, anti-buckling support, limiter Damper Braces, propose one kind has the present invention
The support construction of Stiffness Deterioration ability provides anti-side rigidity when below certain axle power as common support, when its internal force
Reaching certain level can be realized Stiffness Deterioration and with built-in damper dissipation energy, realize overall structure in pole rarely occurred earthquake
Under system transform, be conducive to the ductility of structure.
The present invention is the shear connector Damper Braces that can be realized Stiffness Deterioration and energy consumption, by the two sections of branch connected with Bolt
Support and built-in damper composition, this two sections supports are nested against one another, after Bolt destruction can with respect to rubbing, and with its
In one section support connection damper consume energy.
The present invention cuts by bolt and realizes Stiffness Deterioration, and it is short to reduce on the one hand to change the integrally-built basic cycle
The axial compression ratio of seismic influence coefficient under period earthquake, one side structural column greatly reduces, so that the stress of column total cross-section reduces,
Later it can enter surrender and catagen phase under horizontal external effect, to guarantee its ductility.
The invention proposes a kind of shear connector Damper Braces that can be realized Stiffness Deterioration and energy consumption, comprising: housing constraint
Support embeds sliding support, embeds damper three parts composition.
Shear connector Damper Braces proposed by the present invention, one section of housing constraint support and embedded sliding support respectively with structure
Bean column node bolt link or welding, overlapping position it is nested against one another and with shear connector Bolt connection, embed damper one end
With embedded sliding support to be bolted or weld, the other end constrains support conode with housing at bean column node and connect.
It is preferred that a kind of scheme gone out is, the bearing length of housing constraint support is greater than the whole half of support, backing material
For box steel pipe, to be bolted or weld, end plate is connect with bean column node again for one end and end plate.
It is preferred that a kind of scheme gone out is, the bearing length for embedding sliding support is greater than the whole half of support, backing material
For i shaped steel, to be bolted or weld, end plate is connect with bean column node again for one end and end plate.
It is preferred that a kind of scheme gone out is, housing constraint supports box steel pipe used at the one end not connecting with bean column node
Aperture, position of opening are two opposite faces, and aperture is axially in two column distributions along steel pipe.
It is preferred that a kind of scheme gone out is, the height and box steel pipe inward flange height for slidably supporting i shaped steel used are embedded
It is identical, the flange width of i shaped steel be slightly less than box steel pipe inward flange width with prevent deformation of steel hinder sliding, it is I-shaped
Steel aperture at the one end not connecting with bean column node, position of opening are four edges of a wing of i shaped steel, are distributed along i shaped steel,
Aperture along flange width direction distance with the distance of aperture in the width direction on box steel pipe.
It is preferred that a kind of scheme gone out is that aperture spacing is not answered excessive on box steel pipe and i shaped steel, otherwise shear connector spiral shell
Bolt group arrangement it is sparse, it is possible to because between Bolt discontinuity due to successively destroy, lead to the ultimate bearing of shear connector Bolt
Ability is less than design value.
It is preferred that a kind of scheme gone out is, the dashpot type for embedding damper is the viscous liquid damping of speed relationship type.
It is preferred that a kind of scheme gone out is, the bolt material of shear connector Bolt is aluminium alloy, is made of screw rod, nut, spiral shell
Shank diameter is identical as opening diameter on box steel pipe and i shaped steel, fixed after box steel pipe is overlapped with i shaped steel aperture
Bolt.
It is preferred that a kind of scheme gone out is, the ultimate shear bearing capacity of shear connector Bolt is lower than housing constraint support or interior
The unstability bearing capacity of embedding sliding support.
The structural form convenient transportation that support is integrally segmented by the present invention, energy after the form of being bolted is easily installed and destroys
Enough replacements, meet the requirement of fabricated construction and ductile structure.
To sum up, compared with the prior art, the beneficial effects of the invention include:
The present invention is a kind of to can be realized Stiffness Deterioration and the shear connector Damper Braces of energy consumption can be below the rarely occurred earthquake of pole
External action under play provide anti-side rigidity effect, realize Stiffness Deterioration under pole rarely occurred earthquake and the above external action,
The natural vibration period of structure is changed, and is consumed energy with damper, multiple defence line is formd；Compared to anti-buckling support, can compared with
The axial compression ratio that frame column is reduced under big external action, ensure that the ductile performance of column；Support is whole to be divided into multistage, and is connected with bolt
It connects, is transported after facilitating factory to make, in-site installation is easy；Shear connector Bolt can be replaced after playing a role, and make to support whole
Body restPoses, and reuses, meets the concept of ductile structure.
Detailed description of the invention:
Fig. 1 is the installation diagram of structure of the invention, and 1-1 is housing constraint support, 1-2 is embedded sliding support and embedded damping
Sub-assembly, the 1-3 of device are shearing key bolt, 1-4 is shear connector Damper Braces.Erection sequence and method are as follows: embedded sliding support
Be bolted or weld with embedded damper, embedded damper one end connect with connection board, housing constrain support with it is interior
Installation shearing key bolt after the aperture of embedding sliding support is overlapped, the housing constraint support other end and embedded damper are in same connection
End plate connection.
Fig. 2 is bolt arrangement mode of the present invention and cross section relative position, and 2-1 is front view, 2-2 is top view, 2-3 is
Cross section.
Fig. 3 is the force-displacement curve of shear connector Damper Braces dullness static loading.
Fig. 4 is structural plan.
Fig. 5 is frame column bottom bearing capacity comparison diagram, and 5-1 is column bottom shearing, 5-2 is column bottom moment of flexure.
Fig. 6 is frame column bottom compression lesion development comparison diagram.
Specific embodiment
The present invention is explained below by example and attached drawing.This example is preferred embodiment of the invention, all other principles and base
This structure or implementation method are same or similar with the present embodiment, within that scope of the present invention.
Embodiment one
As shown in Figure 1, a kind of shear connector Damper Braces that can be realized Stiffness Deterioration and energy consumption, it is characterised in that: include:
Housing constraint support, embeds sliding support, embeds damper three parts composition.Housing constraint support and the one of embedded sliding support
Section is linked or is welded with the bean column node bolt of structure respectively, and overlapping position is nested against one another and with the connection of shear connector Bolt, interior
With embedded sliding support to be bolted or weld, the other end is supported altogether at bean column node with housing constraint for embedding damper one end
Node connection.
Embodiment two
In the technical solution of embodiment 1, as shown in Fig. 2, housing constraint support box steel pipe used not with beam column section
Aperture at one end of point connection, position of opening are two opposite faces, and aperture is axially in two column distributions along steel pipe.Embedded sliding support institute
Identical as box steel pipe inward flange height with the height of i shaped steel, the flange width of i shaped steel is slightly less than box steel pipe inner edge
Edge width is to prevent deformation of steel from hindering sliding, i shaped steel aperture at the one end not connecting with bean column node, position of opening
For four edges of a wing of i shaped steel, be distributed along i shaped steel, aperture along flange width direction distance with aperture on box steel pipe
Distance in the width direction.
It to realize that the shearing resistance of shear connector Bolt destroys, and can replace, housing constraint support and embedded sliding support are not
It can be plastically deformed, shear connector Bolt material uses the lower aluminium alloy of intensity, and supporting section uses Q390 steel.
Cut up to prevent housing from constraining supporting base end portion by bolt, outermost bolt and box steel pipe edge reserve 300mm away from
From.For control shear connector Bolt shear resistant capacity not due to discontinuity and design value has the deviation that can not ignore,
Spacing between each row scissor power key bolt is 240mm, and Fig. 2 illustrates the row for shearing key bolt in case where 4 row scissor power key bolts
Mode for cloth.Dull static loading is carried out to the support and multiple rows of shearing key bolt situation with finite element software, obtains power-displacement
Curve is as shown in Figure 3, it can be seen that shear connector fracture has achieved the purpose that rigidity and load-resisting capacity degradation.
Embodiment three
Frame-shear connector damp support structure of the technical solution of embodiment two will be applied and not using frame of the invention
Frame-buckling-resistant support structure compares, and structure is arranged as shown in figure 4, by shear connector Damper Braces or anti-buckling support applications
In two layers of steel reinforced concrete giant frame structure.One layer 42 meters of mega-frame, structure totally 84 meters of height, cross-section of frame column size
2000 × 2000mm, steel ratio 5%；Frame 1000 × 2000mm of beam section size, steel ratio 2.15%.It just now is Q390,
Concrete grade is C60.
Unidirectional static(al) horizontal addload is carried out to structure, extract the concrete at frame column bottom internal force and compression column bottom by
Lesion development is pressed, compared to frame-anti-buckling support construction of the invention is not applied, shearing and moment of flexure, concrete compression are damaged
The factor develops as seen in figs. 5-6.As can be seen that the present invention is because can be realized the degeneration of rigidity and bearing capacity, so that frame
The axial compression ratio of column reduces and reduces the stress level of column total cross-section, finally make the lateral loading of frame column deteriorated compared with
Evening, and concrete compression damage is obviously reduced, and plays the protection main vertical member of structure, it is ensured that the mesh that structure ductility destroys
's.
Only illustrate the concrete application of structure of the invention in this example with several particular situations, there is also other by the present invention
Embodiment, construction and methods for using them.If housing constrains the cross sectional shape of support and embedded sliding support, shear connector Bolt
Arrangement mode shears material selection of key bolt etc., however it is not limited to this.
The present invention can be widely used in frame structure, frame shear wall structure, Frame-Shear wall etc., can effectively control
The whole response under external action of structure processed, and ensure that the axial compression ratio of main vertical member is in reduced levels, reinforcement structure
Ductility, and component of the invention is easy for assembly, replaceable, has important meaning to the development of high performance structures and green building
Justice.
Claims (9)
1. a kind of shear connector Damper Braces that can be realized Stiffness Deterioration and energy consumption, it is characterised in that: include: housing about bundle branch
Support embeds sliding support, embeds damper three parts composition.
2. shear connector Damper Braces according to claim 1, it is characterised in that: housing constraint support and embedded sliding support
One section link or weld with the bean column node bolt of structure respectively, overlapping position it is nested against one another and with shear connector Bolt company
It connects, embeds damper one end with embedded sliding support to be bolted or weld, the other end constrains at bean column node with housing
Support conode connection.
3. shear connector Damper Braces according to claim 2, it is characterised in that: the bearing length of housing constraint support is greater than
Whole half is supported, backing material is box steel pipe, one end and end-plate bolted connections or welding, and end plate and bean column node connect
It connects.
4. shear connector Damper Braces according to claim 2, which is characterized in that the bearing length of embedded sliding support is greater than
Whole half is supported, backing material is i shaped steel, one end and end-plate bolted connections or welding, and end plate and bean column node connect
It connects.
5. shear connector Damper Braces according to claim 3, it is characterised in that: the box steel pipe not with beam column section
Aperture at one end of point connection, position of opening are two opposite faces, and aperture is axially in two column distributions along steel pipe.
6. shear connector Damper Braces according to claim 4, it is characterised in that: the height and box of the i shaped steel
Steel pipe inward flange height is identical, and the flange width of i shaped steel is slightly less than box steel pipe inward flange width to prevent deformation of steel from hindering
Hinder sliding, i shaped steel aperture at the one end not connecting with bean column node, position of opening is four edges of a wing of i shaped steel, edge
I shaped steel distribution, aperture along flange width direction distance with the distance of aperture in the width direction on box steel pipe.
7. shear connector Damper Braces according to claim 2, it is characterised in that: the dashpot type of embedded damper is speed
Spend the viscous liquid damping of relationship type.
8. shear connector Damper Braces according to claim 2, it is characterised in that: the shear connector Bolt, bolt
Material is aluminium alloy, is made of screw rod, nut, and screw diameter is identical as opening diameter on box steel pipe and i shaped steel,
Fixing bolt after box steel pipe is overlapped with i shaped steel aperture.
9. shear connector Damper Braces according to claim 2, it is characterised in that: the ultimate shear of shear connector Bolt carries
Ability is lower than housing constraint support or the unstability bearing capacity of embedded sliding support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811338728.XA CN109296102B (en) | 2018-11-12 | 2018-11-12 | Shear key damping support capable of realizing rigidity degradation and energy consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811338728.XA CN109296102B (en) | 2018-11-12 | 2018-11-12 | Shear key damping support capable of realizing rigidity degradation and energy consumption |
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| Publication Number | Publication Date |
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| CN109296102A true CN109296102A (en) | 2019-02-01 |
| CN109296102B CN109296102B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811338728.XA Active CN109296102B (en) | 2018-11-12 | 2018-11-12 | Shear key damping support capable of realizing rigidity degradation and energy consumption |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029727A (en) * | 2019-04-22 | 2019-07-19 | 东南大学 | A kind of assembling type node of combination shock resistant damping |
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| CN104989002A (en) * | 2015-07-14 | 2015-10-21 | 云南震安减震科技股份有限公司 | Linear steel plate and rubber laminated and combined type buckling restrained brace |
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| CN101525911A (en) * | 2009-04-07 | 2009-09-09 | 同济大学 | Sleeve dissipative element with shear key |
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| CN109296102B (en) | 2020-04-14 |
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