CN105604205B - Modularization bamboo shape buckling restrained brace - Google Patents
Modularization bamboo shape buckling restrained brace Download PDFInfo
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- CN105604205B CN105604205B CN201610121185.0A CN201610121185A CN105604205B CN 105604205 B CN105604205 B CN 105604205B CN 201610121185 A CN201610121185 A CN 201610121185A CN 105604205 B CN105604205 B CN 105604205B
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- energy dissipating
- restrained brace
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a kind of modularization bamboo shape buckling restrained brace, including core component, outer constraint component and structured connecting member；The core component is made of multiple round energy dissipating sections and multiple resilient sleeves, and each circle energy dissipating section is divided into the linkage section for interlude and both ends；The core component is located inside the outer constraint component, and the inner surface of outer constraint component is close to or tangent with the outer surface of the resilient sleeve of core component；Outer constraint component is stretched into one end of the structured connecting member, and the other end stretches out outer constraint component and connect with structure.Modularization bamboo shape buckling restrained brace circle energy dissipating section of the present invention and resilient sleeve can pass through factory's mass production, according to buckling restrained brace length needs, the round energy dissipating section of selection and resilient sleeve are combined, and the modularized production and design to core component can be realized based on this.
Description
Technical field
The invention belongs to field of civil engineering, are related to a kind of buckling-restrained branch for being used to reduce engineering structure seismic response
Support.
Background technology
One of major natural disasters that earthquake is city and its building can suffer from, violent earthquake not only causes structure to break
It is bad, it can also cause the secondary disasters such as fire and chain effect.And the concept of energy-dissipating and shock-absorbing refers to absorb and consume by energy-consuming device
Seismic energy is dissipated, the response and damage of structure is effectively reduced, avoids the serious destruction of agent structure, is to realize that structure is based on condition
One of the important means of set up defences.Energy-dissipating and shock-absorbing component of the buckling restrained brace as a kind of superior performance, in hairs such as Japan, the U.S.
Quick popularization and application are obtained up to country, the research and application in China are also at the starting stage.Buckling restrained brace is small
Shake effect is lower to keep elasticity, the same with generic central support that enough lateral rigidities can be provided for structure, in fortification intensity or seldom
It meets under geological process, the core stressed member of buckling restrained brace is effectively inhibited to avoid whole or part by restraining tube component
Unstability, can be by tension and compression surrender come dissipation energy, and such buckling restrained brace can be used as common support and play its energy consumption
Effect makes agent structure not destroy or destroy under geological process smaller, is a kind of ideal energy-dissipating and shock-absorbing mode.
The constraint component of traditional buckling restrained brace is usually formed by steel and Combined concrete, although cost is relatively low,
But there is also it is certain the problem of：(1) quality of concrete is poured into a mould, such as compactness is affected by technique, concrete setting
Production Time can be extended, reduces production efficiency；(2) since concrete part leakiness may lead to part by core component
Crushing so as to cause core component local buckling, reduces buckling restrained brace performance；(3) in order to ensure core stressed member energy
Enough free pulling-pressings, often wrap up non-cohesive material in core stressed member so that concrete is disengaged with core stressed member surface, together
When to core stressed member provided certain space by compression swelling, but during pouring with vibrated concrete, it is difficult to protect
It demonstrate,proves non-cohesive material and wraps up core stressed member according to design requirement, so as to influence the performance of buckling restrained brace.
Further, using the buckling restrained brace of all steel about area of beam, such as publication CN101974950B, core
Part is round bar type core bar, but since round bar type core bar all directions bending stiffness is equal, may all be occurred in any direction
Wholly or partially buckling, therefore constraint component should constrain, therefore detailing requiments core bar comprehensively along overall length in all directions
It is complex, and material utilization amount also can be larger.
It is worth noting that since structure type is complicated and changeable, the length of buckling restrained brace often can in same structure
It changes, needs the model that design length is different, how to carry out the modularized design of buckling restrained brace is to be worth thinking
Problem.
The deformation in addition, the round mandrel compression of buckling restrained brace can twist, the presence of torsional deflection can cause to justify
The increase of shape plug local deformation, so as to reduce the low cycle fatigue property of buckling restrained brace.
Invention content
The present invention solves steel and Combined concrete from the angle for having paid close attention to buckling restrained brace core component modularized design
When concrete compaction and non-cohesive material setting difficulty and buckling restrained brace are pressurized in the buckling restrained brace of constraint component
The influence to performance such as local buckling, torsional deflection occurs for plug, it is proposed that a kind of modularization bamboo shape buckling restrained brace.
The technical solution adopted by the present invention is：A kind of modularization bamboo shape buckling restrained brace, including core component, outer constraint
Component and structured connecting member；
The core component is made of multiple round energy dissipating sections and multiple resilient sleeves, and each circle energy dissipating section is divided into
Between the linkage section at section and both ends, the area of section of interlude is less than the area of section of linkage section, and connection section surface has external screw teeth, bullet
Property sleeve inner surface have an internal screw thread, by the external screw teeth and resilient sleeve of linkage section between two neighboring circle energy dissipating section
Thread is joined together to form core component；
Core component is made of round energy dissipating section and resilient sleeve, can be produced in batches by factory, according to buckling-restrained branch
Supportting length needs, and round energy dissipating section and resilient sleeve assembled, can be realized to the modularized production of core component based on this and
Design, and the length of outer constraint component is determined according to the constraint requirements to core component, and casing can be cut at the scene
Processing.
The core component is located inside the outer constraint component, the inner surface of outer constraint component and the elasticity of core component
The outer surface of sleeve is close to or tangent；
There is internal screw thread in one end of the structured connecting member, stretches into outer constraint component, and with the linkage section of round energy dissipating section
It is connected by thread, the other end of structured connecting member stretches out outer constraint component and connect with structure.
The inner surface of outer constraint component is close to or tangent with the outer surface of the resilient sleeve of core component, when buckling-restrained branch
When support is pressurized, the radial deformation of resilient sleeve can be limited, this is equivalent to have at both ends for single round energy dissipating section
Lateral support acts on, under axial compressive force effect so that the compression computational length of single circle energy dissipating section is round energy dissipating section
The length of interlude by rationally designing, can reduce the surface plastic deformation of round energy dissipating section.
Preferably, the area of section of the both ends linkage section of the round energy dissipating section of the core component is at least interlude
1.6 times of area of section.
Bearing capacity of the buckling restrained brace after core component surrender can further improve, superpower to be mainly divided into two parts：
First, the strain hardening coefficient of steel, tries the CYCLIC LOADING of a variety of steel (Q235, Q345, Q390) according to present inventor
It tests and has result by references, the strain hardening coefficient of steel is 1.42 or so；Second is that compression bearing regulation coefficient, main shadow
Friction effect and poisson effect of the factor of sound between buckling restrained brace core component and constraint component, send out according to the application
Person of good sense's many experimental results, maximum value can be taken as 1.13, in conclusion modularization bamboo shape buckling restrained brace over-strength factor w
It can be taken as 1.6 (i.e. 1.42 × 1.13 values).Therefore, present invention provide that the section face of the both ends linkage section of the circle energy dissipating section
Product is at least 1.6 times of the area of section of interlude, it is ensured that the surrender bearing capacity of the both ends linkage section of round energy dissipating section is more than
Maximum load capacity is supported, elasticity is remained under load action, it is ensured that the validity of resilient sleeve connection.
Preferably, of length no more than 8 times of its radius of the interlude of the round energy dissipating section of the core component.
For the interlude of the round energy dissipating section of modularization bamboo shape buckling restrained brace, such as require its only occur surrender without
Buckling occurs, the buckling bearing capacity of single circle energy dissipating section is more than the maximum load capacity supported under given displacement amplitude, as follows
Shown in formula：
Wherein, EtFor the tangent modulus of interlude, I is the cross sectional moment of inertia of interlude, and l is the length of interlude, and w is branch
Support over-strength factor, σyFor the yield strength of interlude, A is the area of section of interlude.From the above equation, we can see that the maximum value and material of l
Expect yield strength σ yIntoInverse ratio, the material of buckling restrained brace core component generally use is Q235, Q345 etc., substitutes into related ginseng
Number empirical value and interlude radius r, can obtain：
l≤8.4r
Therefore of length no more than 8 times of its radius of the single round energy dissipating section interlude of regulation.
Preferably, it is round on the inside of the resilient sleeve of the core component, outside is round or polygon.
Preferably, the outer constraint component is round or polygonal cannulation.
When outer constraint component is polygonal cannulation, the outside of the resilient sleeve of corresponding core component is also polygon, two
Person is close to, at this point, outer constraint component can limit the tangential deformation of spring-backed quill, that is to say, that the both ends of round energy dissipating section are tangential
Deformation is all limited, and the whole torsional deflection of the core component of buckling restrained brace is reduced, so as to reduce core component
Surface strain, improve the low cycle fatigue property of buckling restrained brace.
The invention has the advantages that：
It, can be by factory's mass production, according to buckling about 1. core component is made of round energy dissipating section and resilient sleeve
Beam bearing length needs, and round energy dissipating section and resilient sleeve can be for 1 group or multigroup, can be realized to core component based on this
Modularized production and design, and the length of outer constraint component is determined according to the constraint requirements to core component, it can be right at the scene
Casing carries out cutting processing.
2. modularization bamboo shape buckling restrained brace core component is alternate along longitudinal direction by multiple round energy dissipating sections and resilient sleeve
Distribution is formed, and the intermediate segment length of each circle energy dissipating section is shorter, the only surrender not buckling under axle power effect, thus constraint component and
Mortar need not be filled between round energy dissipating section or increases excessive parts, it is constrained so that buckling restrained brace construction letter
It is single and easy to process.
3. the interlude area of section of the round energy dissipating section of modularization bamboo shape buckling restrained brace core component is relative to circle
The linkage section of shape energy dissipating section is smaller, and so as to which yield force is smaller, the rigidity requirement of external constraint component is relatively low, because of constraint component in addition
Can be simple bushings so that buckling restrained brace simple structure and dead weight it is lighter, facilitate installation.
4. the linkage section cross-sectional area of the round energy dissipating section of modularization bamboo shape buckling restrained brace core component is at least
1.6 times of interlude, 1.6 be about the over-strength factor after core component surrender, can ensure that linkage section remains elasticity, into one
Step can ensure effective connection of resilient sleeve.
5. when outer constraint component is polygonal cannulation, the outside of the resilient sleeve of corresponding core component is also polygon,
At this point, outer constraint component can limit the tangential deformation of spring-backed quill, that is to say, that the both ends tangential deformation of round energy dissipating section is all
It is limited, reduces the whole torsional deflection of the core component of buckling restrained brace, so as to reduce the surface of core component
Strain improves the low cycle fatigue property of buckling restrained brace.
6. using all steel restraining tube section, concrete wet construction is avoided, all steel members can make in factory,
Machining accuracy is easier to control.
Description of the drawings
Fig. 1 is the modularization bamboo shape buckling restrained brace core component of the embodiment of the present invention 1 and structured connecting member assembling
Preceding plan view；
Fig. 2 is the modularization bamboo shape buckling restrained brace core component of the embodiment of the present invention 1 and structured connecting member assembling
Plan view afterwards；
Fig. 3 is the modularization bamboo shape buckling restrained brace plan view of the embodiment of the present invention 1；
Fig. 4 is the A-A sectional views of Fig. 3 modularization bamboo shape buckling restrained braces；
Fig. 5 is the modularization bamboo shape buckling restrained brace sectional view of the embodiment of the present invention 2；
Fig. 6 is the modularization bamboo shape buckling restrained brace sectional view of the embodiment of the present invention 3；
Fig. 7 is the modularization bamboo shape buckling restrained brace plan view of the embodiment of the present invention 4.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1
As shown in figures 1-4：A kind of modularization bamboo shape buckling restrained brace, including core component 1, outer constraint component 2 and knot
Structure connecting component 3, the core component 1 are made of four circle energy dissipating section 1-1 and three resilient sleeve 1-2, round energy dissipating section
The area of section of the end linkage section 1-1-2 of 1-1 is more than the area of section of interlude 1-1-1, standing to be set to linkage section 1-1-2's
Area of section is 1.6 times of interlude 1-1-1, and there is external screw teeth on linkage section 1-1-2 surfaces, and resilient sleeve 1-2 inner surfaces have interior
Thread, the linkage section 1-1-2 of round energy dissipating section 1-1 connect to form core component 1 by resilient sleeve 1-2 threads, and described is outer
The inner surface of constraint component 2 is close to the outer surface of the resilient sleeve 1-2 of core component 1, and the one of the structured connecting member 3
There is internal screw thread at end, stretches into outer constraint component 2, is connect with the linkage section 1-1-2 of round energy dissipating section 1-1 by thread, connecting component 3
The other end stretch out outer constraint component 2 and connect with structure.
The area of section of the linkage section 1-1-2 of the round energy dissipating section 1-1 of core component 1 is at least cutting for interlude 1-1-1
1.6 times of face area.
Of length no more than 8 times of its radius of the interlude 1-1-1 of the round energy dissipating section 1-1 of core component 1.Embodiment 2
As shown in Figure 5：The present embodiment is identical with 1 rest part of embodiment, and the difference lies in the resilient sleeve 1-2's
Inner surface is circle, and outer surface is six deformations, and resilient sleeve 1-2 and the inner surface of outer constraint component 2 are tangent.
Embodiment 3
As shown in Figure 6：The present embodiment is identical with 2 rest part of embodiment, and the difference lies in the outer constraint components 2 to be
Six crush bushings, inner surface are close to the outer surface of resilient sleeve 1-2.
Embodiment 4
As shown in Figure 7：The present embodiment is identical with 1 rest part of embodiment, the difference lies in the core component 1 by two
A circle energy dissipating section 1-1 and a resilient sleeve 1-2 composition.
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Several improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.In the present embodiment not
The available prior art of specific each component part is realized.
Claims (5)
1. a kind of modularization bamboo shape buckling restrained brace, it is characterised in that：It is connected including core component, outer constraint component with structure
Component；
The core component is made of multiple round energy dissipating sections and multiple resilient sleeves, and each circle energy dissipating section is divided into as interlude
With the linkage section at both ends, the area of section of interlude is less than the area of section of linkage section, and connection section surface has external screw teeth, resilient sleeve
Cylinder inner surface has internal screw thread, passes through the external screw teeth of linkage section and the internal screw thread of resilient sleeve between two neighboring circle energy dissipating section
It is joined together to form core component；
The core component is located inside the outer constraint component, the inner surface of outer constraint component and the resilient sleeve of core component
Outer surface be close to or tangent；
There is internal screw thread in one end of the structured connecting member, stretches into outer constraint component, and pass through with the linkage section of round energy dissipating section
Thread connects, and the other end of structured connecting member stretches out outer constraint component and connect with structure.
2. modularization bamboo shape buckling restrained brace according to claim 1, it is characterised in that：The circle of the core component
The area of section of the both ends linkage section of energy dissipating section is at least 1.6 times of the area of section of interlude.
3. modularization bamboo shape buckling restrained brace according to claim 1, it is characterised in that：The circle of the core component
Of length no more than 8 times of its radius of the interlude of energy dissipating section.
4. modularization bamboo shape buckling restrained brace according to claim 1, it is characterised in that：The elasticity of the core component
It is round on the inside of sleeve, outside is round or polygon.
5. modularization bamboo shape buckling restrained brace according to claim 1, it is characterised in that：The outer constraint component is circle
Shape or polygonal cannulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121185.0A CN105604205B (en) | 2016-03-03 | 2016-03-03 | Modularization bamboo shape buckling restrained brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121185.0A CN105604205B (en) | 2016-03-03 | 2016-03-03 | Modularization bamboo shape buckling restrained brace |
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| Publication Number | Publication Date |
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| CN105604205A CN105604205A (en) | 2016-05-25 |
| CN105604205B true CN105604205B (en) | 2018-06-22 |
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| CN201610121185.0A Active CN105604205B (en) | 2016-03-03 | 2016-03-03 | Modularization bamboo shape buckling restrained brace |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760854B (en) * | 2017-01-25 | 2019-01-25 | 东南大学 | Rectilinear laemodipodiform pole energy consumption bar |
| CN112049271A (en) * | 2020-09-15 | 2020-12-08 | 哈尔滨工程大学 | Section steel-square steel pipe combined type buckling restrained brace |
| CN112443047A (en) * | 2020-12-01 | 2021-03-05 | 上海烟草集团有限责任公司 | Pre-stressed prefabricated bamboo joint type buckling restrained brace device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205399715U (en) * | 2016-03-03 | 2016-07-27 | 中国京冶工程技术有限公司 | Serial -type bamboo shape buckling restrained brace |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7174680B2 (en) * | 2002-05-29 | 2007-02-13 | Sme Steel Contractors, Inc. | Bearing brace apparatus |
| CN101413298B (en) * | 2008-11-19 | 2010-12-08 | 东南大学 | Light triple-heavy metal circular tube flexion restriction support energy dissipating machine |
| CN201459947U (en) * | 2009-05-27 | 2010-05-12 | 清华大学 | Fiber reinforced composite material-restraining bending and energy consumption-preventing steel support |
| CN102116055B (en) * | 2009-12-31 | 2012-07-04 | 上海维固工程实业有限公司 | Energy dissipation and shock absorption mechanism |
| CN101974950B (en) * | 2010-11-19 | 2012-04-18 | 太原理工大学 | Rod type core bar bending restrain steel support |
| CN102261140B (en) * | 2011-05-23 | 2013-02-27 | 株洲时代新材料科技股份有限公司 | Segmental energy-consumption buckling-restrained brace method and device |
| CN202672400U (en) * | 2012-01-12 | 2013-01-16 | 郭奇 | Novel bamboo type steel tube buckling restricting energy consumption support |
| CN103981975B (en) * | 2014-05-12 | 2017-01-25 | 东南大学 | Bamboo-wood-filled buckling restrained support |
| CN104775538B (en) * | 2015-04-20 | 2017-11-07 | 中南林业科技大学 | Recombined bamboo tie hoop nailing buckling-restrained energy-dissipation |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205399715U (en) * | 2016-03-03 | 2016-07-27 | 中国京冶工程技术有限公司 | Serial -type bamboo shape buckling restrained brace |
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Inventor after: Zeng Bin Inventor after: Xu Qing Inventor after: Wang Chunlin Inventor after: Liu Ye Inventor after: Chen Jianhua Inventor before: Zeng Bin Inventor before: Xu Qing Inventor before: Liu Dejun Inventor before: Wang Chunlin Inventor before: Liu Ye Inventor before: Chen Jianhua |
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