CN105888090A - Low yield point steel and high dissipation viscoelasticity buckling restraining brace - Google Patents
Low yield point steel and high dissipation viscoelasticity buckling restraining brace Download PDFInfo
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- CN105888090A CN105888090A CN201410652441.XA CN201410652441A CN105888090A CN 105888090 A CN105888090 A CN 105888090A CN 201410652441 A CN201410652441 A CN 201410652441A CN 105888090 A CN105888090 A CN 105888090A
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Abstract
The invention provides a buckling restraining brace with a high energy dissipation capacity. The low yield point steel and high dissipation viscoelasticity buckling restraining brace is composed of a core unit, a high dissipation viscoelasticity material and a restraining unit. The cure unit is made of a low yield point steel material, the brace achieves buckling under small earthquake force for energy dissipation, and a main body structure is better protected; an unbonded layer is made of the high dissipation viscoelasticity material, not only can the friction between the core unit and the restraining unit be effectively reduced, but also the high dissipation viscoelasticity material can absorb partial vibration energy in the shear and compression processes, the brace can provide a more stable and fuller hysteretic curve, the high dissipation viscoelasticity material provides a gap needed by deformation of the core unit and limits buckling deformation and related curvature of a buckling segment of the core unit, and therefore the low-cyclic fatigue life of the buckling segment is effectively prolonged; an I-shaped all-steel combined section mode is adopted by the restraining unit, the section is light, exquisite and simple, mechanic concepts are clear, standardized production is easy, and steel can be recycled and reused conveniently.
Description
Technical field
The present invention is a kind of energy dissipative device that can be used for new building and existing building seismic hardening.
Background technology
Earthquake is to threaten one of human security and the Major Natural Disasters causing civil structure extensive damage, tradition
Civil structure antidetonation mode be to take to strengthen beam cross-section size " the most anti-" mode, but this mode
Sometimes it is difficult to meet actual requirement, causes huge cost to increase sometimes.Structural vibration control mode is used to consume
The vibrational energy of eliminating stagnation structure is considered as a kind of effective novel earthquake-proof mode, and buckling restrained brace is exactly a kind of allusion quotation
The passive seismic control device of type, it is made up of core cell and restraining tube unit, under little shake effect, bends
Bent constraint supports the central supported being equivalent to not unstability, provides lateral rigidity to major structure of construction；In middle shake or
Under big shake effect, owing to being limited by restraining tube unit, core cell can realize under tension and compression state entirely
Cross section is surrendered and component flexing is not occurred, the seismic energy that dissipates to the agent structure bigger damping of offer.Flexing is about
Bundle branch support is because of its preferable energy dissipation capacity and cheap extremely scientific research circle and the concern of engineering circles, but it is still
There is techniques below problem to need to study further and improved: 1) core cell yield point is higher, earthquake
The valve point of Shi Qidong power consumption unit is higher；2) according to low-yield steel as core cell, though easily leading
Cause core cell is surrendered, but the low-cycle fatigue life also resulting in core cell reduces, and how to protect core list
Unit and to improve its service life be key issue；3) constraint element of buckling restrained brace generally uses steel pipe
Concrete or armored concrete, thus cause the weight of component compared with big and component machining accuracy is relatively low, and reclaim
Recycling property is poor.
For solving the above-mentioned technical barrier about buckling restrained brace, the core cell of the present invention uses low-yield
Steel, are supported on core cell under less geological process and surrender and consume energy, be effectively protected agent structure；
Adhesive-less layer in the present invention uses a kind of high dissipation viscoelastic material, and high dissipation viscoelastic material provides core
The bending deformation of core cell surrender section and relevant curvature is again limit while gap needed for heart element deformation,
When core cell generation lateral expansion or surrender, high dissipation viscoelastic material can transmit partially laterally power uniformly
To outer layer constraint element, the way of restraint of this flexibility can reduce the local failure of core cell and improve core list
The low-cycle fatigue life of unit, the highest dissipation viscoelastic material is absorbable part during being sheared and extruding
Vibrational energy, whole buckling restrained brace can provide more stable, full hysteresis loop；Constraint in the present invention
Unit uses the form of I-shaped all steel compound section, cross section lightly simple, sidewise restraint rigidity is relatively big, mechanics
Clear concept, easy standardized production, easy construction and detachable recycling.
Summary of the invention
Technical problem: it is an object of the invention to provide a kind of function admirable, standardized production cheap, easy
Buckling restrained brace.
Technical scheme: in the present invention Low Yield Point Steel height dissipation viscoelastic buckling constraint support by core cell,
High dissipation viscoelastic material, constraint element are constituted.Core cell is along longitudinally including constraint surrender section, retraining non-bending
The section of clothes, nothing constraint non-compliant section.Constraint surrender section is power consumption section, uses low-yield steel, and at pars intermedia
Set up the slip putting spacing preiection for restriction unit separately；Constraint non-compliant section uses the form of variable cross-section with fall
Stress concentration；Offer bolt hole without constraint non-compliant section, can be connected with agent structure by bolt, without constraint
The both sides of non-compliant section arrange ribbed stiffener by angle welding, and ribbed stiffener has part to stretch into constraint element.Constraint element
Being combined by welding by two classes, four I-shaped components altogether, the I-shaped component of a class is reserved at two ends
The compression stroke (length is determined by actual demand) of certain length, the I-shaped component of b class is reserved recessed in centre
Groove plays spacing effect with protruding occlusion of core cell.Certain thickness high dissipation viscoelastic material is (thick
Degree is determined by actual demand) it is attached on core cell.
The constraint of Low Yield Point Steel height dissipation viscoelastic buckling being supported uses diagonal angle oblique or herringbone is arranged in layer
Between.Under little shake and wind are shaken, as common support, the constraint of Low Yield Point Steel height dissipation viscoelastic buckling supports
Flexing will not occur, now only provide lateral rigidity to major structure of construction；Under middle shake and big shake, core list
Unit's constraint surrender section can enter surrender, and reciprocal elastic-plastic deformation and then power consumption occur.High dissipation viscoelastic material carries
For again limit the bending deformation of core cell surrender section and relevant song while the required gap of core cell deformation
Rate, when core cell generation lateral expansion or surrender, high dissipation viscoelastic material can be uniformly partially laterally
Being delivered to power outer layer constraint element, the way of restraint of this flexibility can reduce the local failure of core cell and carry
The low-cycle fatigue life of high core cell, the highest dissipation viscoelastic material can during being sheared and extruding
Absorbing partial vibration energy, whole buckling restrained brace can provide more stable, full hysteresis loop.
Constraint element in the present invention uses the form of I-shaped all steel compound section, and cross section is lightly simple, lateral
Constraint rigidity is compared with big, mechanical concept standardized production clear, easy, easy construction and detachable recycling.
It can thus be seen that the constraint support of Low Yield Point Steel height dissipation viscoelastic buckling has highly energy-consuming ability, makes
By life-span length, the advantage such as machining accuracy is high, recycling property is good.
Beneficial effect: the Low Yield Point Steel height dissipation viscoelastic buckling constraint support of the present invention has the advantage that
(1) core cell uses low-yield steel, and just can dissipate under little shake vibrational energy, and power consumption starts
Valve point is low.
(2) adhesive-less layer uses high dissipation viscoelastic material can improve the low-cycle fatigue of core cell surrender section
Life-span and the energy dissipation capacity of increase buckling restrained brace.
(3) constraint element uses the form of I-shaped all steel compound section, cross section lightly simple, sidewise restraint
Rigidity is compared with big, mechanical concept standardized production clear, easy, easy construction and detachable recycling.
Accompanying drawing explanation
Fig. 1 is that Low Yield Point Steel height dissipation viscoelastic buckling retrains support energy consumption section sectional view；
Fig. 2 is the structural map of core cell；
Fig. 3 (a) is the structural map I of constraint element；
Fig. 3 (b) is the structural map II of constraint element；
Fig. 4 is that Low Yield Point Steel height dissipation viscoelastic buckling retrains support effect figure；
Wherein, 1 is core cell；2 is high dissipation viscoelastic material；3 is constraint element；4 is constraint surrender
Section；5 is constraint non-compliant section；6 is unconfinement non-compliant section；7 is spacing preiection；8 is ribbed stiffener；9 are
Bolt hole；10 is groove；11 are limited bit space.
Detailed description of the invention
As shown in Figure 1 to 4, the constraint of the Low Yield Point Steel height dissipation viscoelastic buckling in the present invention supports by core
Heart unit (1), high dissipation viscoelastic material (2), constraint element (3) are constituted.Core cell (1) uses
Yield strength is the steel of 100～200Mpa, such as BLY100, LYP100, BLY160.Core cell (1)
Along longitudinally including constraint surrender section (4), retraining non-compliant section (5), without constraint non-compliant section (6).Constraint is bent
The section of clothes (4) is power consumption section, uses low-yield steel, and arranges spacing preiection (7) at mid portion and (depend on
Depending on damping force tonnage) for the slip of restriction unit；Constraint non-compliant section (5) uses variable cross-section
Form to drop stress concentration；Offer bolt hole (9) without constraint non-compliant section, bolt and body junction can be passed through
Structure connects, and the both sides without constraint non-compliant section arrange ribbed stiffener (8) by angle welding, and ribbed stiffener has part to stretch
Enter constraint element (3).Constraint element (3) use Q235 steel, by a, b two class amount to four I-shaped
Component is combined by welding, and the compression stroke (11) of certain length reserved by the I-shaped component of a class at two ends,
The I-shaped component of b class is reserved groove (10) and has been engaged with the spacing preiection (7) of core cell (1) in centre
To spacing effect.Adhesive-less layer (2) uses high dissipation viscoelastic material, as butyl rubber, silicone rubber,
Nitrile rubber is the viscoelastic material of matrix.Certain thickness high dissipation viscoelastic material is pasted onto core cell
(1) on.
The constraint of Low Yield Point Steel height dissipation viscoelastic buckling being supported uses diagonal angle oblique or herringbone is arranged in layer
Between.Under little shake and wind are shaken, as common support, the constraint of Low Yield Point Steel height dissipation viscoelastic buckling supports
Flexing will not occur, now only provide lateral rigidity to major structure of construction；Under middle shake and big shake, core list
Unit's constraint surrender section (4) can enter surrender, and reciprocal elastic-plastic deformation and then power consumption occur.High dissipation viscoelasticity
Material (2) again limit core cell constraint surrender section while providing the required gap of core cell (1) deformation
(4) bending deformation and relevant curvature, when there is lateral expansion or surrender in core cell (1), high dissipation
Viscoelastic material (2) can be delivered to outer layer constraint element (3), this flexibility partially laterally power uniformly
The way of restraint can reduce core cell (1) local failure and improve core cell (1) the low-cycle fatigue longevity
Life, the highest dissipation viscoelastic material (2) is absorbable partial vibration energy during being sheared and extruding,
Whole buckling restrained brace can provide more stable, full hysteresis loop.
Constraint element (3) in the present invention uses the form of I-shaped all steel compound section, cross section lightly simple,
Sidewise restraint rigidity is compared with big, mechanical concept standardized production clear, easy, easy construction and detachable recovery profit again
With.
It can thus be seen that the constraint support of Low Yield Point Steel height dissipation viscoelastic buckling has highly energy-consuming ability, makes
By life-span length, the advantage such as machining accuracy is high, recycling property is good.
Claims (3)
1. Low Yield Point Steel height dissipation viscoelastic buckling constraint supports, and it constitutes and is divided into three parts: core list
Unit (1), high dissipation viscoelastic material (2), constraint element (3).Core cell (1) is along longitudinally including about
Bundle surrender section (4), constraint non-compliant section (5), without constraint non-compliant section (6).Constraint surrender section is power consumption section,
Centre arranges spacing preiection (7)；Constraint non-compliant section (5) uses variable cross-section form, and sets in the both sides of plate
Put ribbed stiffener (8)；Without offering bolt hole (9) in constraint non-compliant section, it is connected with agent structure by connecting plate.
Constraint element (3) is made up of the component of two class I-shaped cross-sections, and a class I-shaped cross-section component is arranged at two ends
Compression stroke (11), b class I-shaped cross-section component arranges groove (10) in centre.
Low Yield Point Steel height dissipation viscoelastic buckling the most according to claim 1 constraint supports, it is characterised in that
Described core cell (1) have employed Low Yield Point Steel, and core cell is in plastic zone by Low Yield Point Steel
Tension and compression deformation is occurred repeatedly to consume energy；Between on the one hand high dissipation viscoelastic material provides core cell deformation required
Gap, limits the most again the bending deformation of core cell surrender section and relevant curvature, thus is effectively improved surrender section
Low-cycle fatigue life；On the other hand the deformation of core cell vibration reciprocating can cause high dissipation viscoelastic material to be cut
Cutting and extrude, high dissipation viscoelastic material can dissipate vibrational energy, increases the energy dissipation capacity of buckling restrained brace.
3. retrain according to the Low Yield Point Steel height dissipation viscoelastic buckling described in claim 1 and 2 and support, its feature
It is that restraining tube unit have employed the form of four i shaped cross section Member Weldings, in the less feelings of materials
It is provided that bigger peripheral bending rigidity under condition, takes into full account buckling restrained brace loading characteristic, component processing system
Facilitating, easy standardized production, maintenance construction is convenient, and detachable recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652441.XA CN105888090A (en) | 2014-11-12 | 2014-11-12 | Low yield point steel and high dissipation viscoelasticity buckling restraining brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652441.XA CN105888090A (en) | 2014-11-12 | 2014-11-12 | Low yield point steel and high dissipation viscoelasticity buckling restraining brace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105888090A true CN105888090A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410652441.XA Pending CN105888090A (en) | 2014-11-12 | 2014-11-12 | Low yield point steel and high dissipation viscoelasticity buckling restraining brace |
Country Status (1)
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| CN (1) | CN105888090A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005251A (en) * | 2018-01-26 | 2018-05-08 | 北京建院科技发展有限公司 | A kind of assembled angle brace carrying energy dissipation brace and its construction method |
| CN109629896A (en) * | 2018-12-28 | 2019-04-16 | 云南震安减震科技股份有限公司 | A kind of double buckling-restrained energy dissipation braces of surrender of combined type |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255952A (en) * | 1998-01-28 | 2000-06-07 | 新日本制铁株式会社 | Viscoelastic brace |
| JP2002147052A (en) * | 2000-11-14 | 2002-05-22 | Shimizu Corp | Brace damper |
| US20030221389A1 (en) * | 2002-05-29 | 2003-12-04 | Smelser James M | Bearing brace apparatus |
| TW201000722A (en) * | 2008-06-26 | 2010-01-01 | Chung-Shing Tsai | Energy dissipation bracing apparatus |
| CN103397711A (en) * | 2013-08-05 | 2013-11-20 | 东南大学 | Multi-tube lattice type buckling restraining support |
-
2014
- 2014-11-12 CN CN201410652441.XA patent/CN105888090A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255952A (en) * | 1998-01-28 | 2000-06-07 | 新日本制铁株式会社 | Viscoelastic brace |
| JP2002147052A (en) * | 2000-11-14 | 2002-05-22 | Shimizu Corp | Brace damper |
| US20030221389A1 (en) * | 2002-05-29 | 2003-12-04 | Smelser James M | Bearing brace apparatus |
| TW201000722A (en) * | 2008-06-26 | 2010-01-01 | Chung-Shing Tsai | Energy dissipation bracing apparatus |
| CN103397711A (en) * | 2013-08-05 | 2013-11-20 | 东南大学 | Multi-tube lattice type buckling restraining support |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005251A (en) * | 2018-01-26 | 2018-05-08 | 北京建院科技发展有限公司 | A kind of assembled angle brace carrying energy dissipation brace and its construction method |
| CN108005251B (en) * | 2018-01-26 | 2023-09-19 | 北京建院科技发展有限公司 | Assembled corner support bearing energy dissipation support and construction method thereof |
| CN109629896A (en) * | 2018-12-28 | 2019-04-16 | 云南震安减震科技股份有限公司 | A kind of double buckling-restrained energy dissipation braces of surrender of combined type |
| CN109629896B (en) * | 2018-12-28 | 2023-12-19 | 震安科技股份有限公司 | Combined type double-yield buckling restrained energy-dissipation brace |
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Application publication date: 20160824 |