CN105714952B - Bamboo shape buckling restrained brace - Google Patents
Bamboo shape buckling restrained brace Download PDFInfo
- Publication number
- CN105714952B CN105714952B CN201610121121.0A CN201610121121A CN105714952B CN 105714952 B CN105714952 B CN 105714952B CN 201610121121 A CN201610121121 A CN 201610121121A CN 105714952 B CN105714952 B CN 105714952B
- Authority
- CN
- China
- Prior art keywords
- section
- component
- round
- restrained brace
- core component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of bamboo shape buckling restrained brace, including core component, outer constraint component and enhancing connecting component；The core component is made of multiple circular energy dissipating sections and round and elastic section along the alternate setting of longitudinally coaxial line, and round and elastic section includes multiple middle spring sections and two end stretch sections, and circular energy dissipating section area of section is less than round and elastic section；The core component is located inside the outer constraint component；The enhancing connecting component is made of node section, linkage section and reinforcement cylinder.Each circular energy dissipating segment length of bamboo shape buckling restrained brace of the present invention is shorter, not flexing is only surrendered under axle power effect, mortar need not be filled or increase excessive parts constrain it, and circle energy dissipating section area of section is smaller relative to round and elastic section, yield force is smaller, the rigidity requirement of external constraint component is relatively low, and because constraint component can be simple circular sleeve in addition, its simple structure, convenient processing, dead weight are lighter.
Description
Technical field
The invention belongs to field of civil engineering, is 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 heavy damage of agent structure, be to realize that structure is based on condition
One of important means set up defences.A kind of energy-dissipating and shock-absorbing component of the buckling restrained brace as superior performance is more in Japan, the U.S. etc.
The developed country of shake has obtained quick popularization and application, and the research and application in China are also at the starting stage.Buckling-restrained branch
Support small shake effect under keep elasticity, with generic central support enough lateral rigidities can be provided for structure, it is strong setting up defences
Under degree or rarely occurred earthquake effect, the core stressed member of buckling restrained brace is effectively suppressed to avoid entirety by restraining tube component
Or local buckling, can be by tension and compression surrender come dissipation energy, such buckling restrained brace can be used as common support and play
Its energy consumption acts on, and agent structure is not destroyed or destroy under geological process smaller, is a kind of ideal antidetonation consumption
Can 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 had a great influence by technique, concrete setting
Production Time can be extended, reduces production efficiency；(2) since concrete part leakiness may cause 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
Demonstrate,prove non-cohesive material and wrap 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, its core
Part is circular bar type core bar, but since circular rod formula core bar all directions bending stiffness is equal, may all be occurred in any direction
Wholly or partially flexing, therefore constraint component should constrain core bar comprehensively along total length in all directions, therefore detailing requiments
It is complex, and material utilization amount also can be larger, buckling restrained brace core component end is in the presence of no constraint, end meeting in addition
Obvious rotate so as to influence the overall stability of support occurs.
The content of the invention
The purpose of the present invention is to solve concrete dense in steel and the buckling restrained brace of Combined concrete constraint component
Real and non-cohesive material sets the constraint component construction of the difficult and influence to performance, circular bar type core bar buckling restrained brace multiple
A kind of the problems such as miscellaneous, it is proposed that bamboo shape buckling restrained brace.
The technical solution adopted by the present invention is：A kind of bamboo shape buckling restrained brace, including core component, outer constraint component and
Strengthen connecting component；
The core component is made of multiple circular energy dissipating sections and round and elastic section along the alternate setting of longitudinally coaxial line, circular
Stretch section includes multiple middle spring sections and two end stretch sections, and circular energy dissipating section area of section is less than round and elastic section；
The core component is located inside the outer constraint component, core component round and elastic section surrounding and outer constraint component
Inner side is close to or tangent, and there are gap between circular energy dissipating section and outer constraint component；
The enhancing connecting component is made of node section, linkage section and reinforcement cylinder, and the node section is by support and structure
Gusset plate be connected, the end stretch section consolidation of linkage section and core component, strengthens cylinder parcel constraint component, and strengthens the interior of cylinder
Side on the outside of constraint component with being close to.
Preferably, the circle energy dissipating section is cut along surrounding by round and elastic section and is formed.
Preferably, the cross-sectional area of the core component round and elastic section is at least 1.6 times of circular energy dissipating section.
Bearing capacity of the buckling restrained brace after core component surrender can further improve, its is superpower mainly to divide 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
Test and have result by references, the strain hardening coefficient of steel is 1.42 or so；Second, 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, its maximum can be taken as 1.13, in conclusion bamboo shape buckling restrained brace over-strength factor w can be taken as
1.6 (i.e. 1.42 × 1.13 values).Therefore, in technical solution of the present invention, the cross-sectional area of core component round and elastic section is extremely
Few is 1.6 times of circular energy dissipating section, it is ensured that the surrender bearing capacity of round and elastic section is more than support maximum load capacity, round and elastic
Section can remain elasticity under load action.
Preferably, the length of the multiple circular energy dissipating sections of the core component gradually increases from both ends toward middle.
Since contact produces friction between the core component and constraint component of buckling restrained brace so that core component bar axis
Power is gradually reduced from both ends toward middle part, and therefore, the length of circular energy dissipating section can suitably increase from both ends toward centre.
Preferably, of length no more than 8 times of its radius of the single circular steel energy dissipating section of core component.
Present invention provide that the round and elastic section of bamboo shape buckling restrained brace, only occurs to surrender and without flexing, thus it is single
The flexing bearing capacity of a circle energy dissipating section is more than the maximum load capacity supported under given displacement amplitude, is shown below：
Wherein, EtFor the tangent modulus of core component material, I is the cross sectional moment of inertia of circular surrender section, and l is single circle
The length of section is surrendered, w is to support over-strength factor, σyFor backing material yield stress, A is circular surrender section area.Can by above formula
Know, the maximum and material yield strength σ of the l of buckling restrained braceyIt is inversely proportional, buckling restrained brace core component generally use
The material used substitutes into relevant parameter empirical value and radius circular surrender section radius r, can obtain for Q235, Q345 etc.：
l≤8.4r
Therefore of length no more than 8 times of its radius of the single circular energy dissipating section of regulation.
It is close on the inside of core component round and elastic section surrounding of the present invention and outer constraint component or tangent, constraint component is controllable
Core component round and elastic section lateral deformation processed, so that reach the effect for suppressing buckling restrained brace overall collapse, and meanwhile it is circular
Energy dissipating segment length is shorter, of length no more than 8 times of its radius of single circle energy dissipating section, therefore single circular energy dissipating section will not occur
Interior overall collapse.
The invention has the advantages that：
1. the hinged buckling restrained brace in traditional both ends can rotate the monolithic stability for reducing buckling restrained brace due to end
Performance, and bamboo shape buckling restrained brace proposes enhancing connecting component on the basis of in light of its own characteristics, by equipped with reinforcement cylinder
And outer constraint component periphery is arranged in, so as to limit the rotation of core component end, strengthen the stability of buckling restrained brace.
2. relative to the hinged buckling restrained brace in traditional both ends, set in bamboo shape buckling restrained brace enhancing connecting component
There is reinforcement cylinder, there is greater stiffness due to strengthening cylinder, rigid body can be regarded as, the monolithic stability computational length of support can reduce, support
Stability bearing capacity significantly increase.
3. bamboo shape buckling restrained brace core component is distributed alternately by multiple circular energy dissipating sections and round and elastic section along longitudinal direction
Form, each circle energy dissipating segment length is shorter, the only surrender not flexing under axle power effect, therefore constraint component and circular energy dissipating section it
Between need not fill mortar or increase excessive parts it is constrained so that buckling restrained brace simple structure and processing side
Just.
4. the circular energy dissipating section area of section of bamboo shape buckling restrained brace core component is smaller relative to round and elastic section, from
And yield force is smaller, the rigidity requirement of external constraint component is relatively low, because constraint component can be simple circular sleeve in addition so that flexing
Constrain support structure simply and dead weight is lighter, convenient installation.
5. the round and elastic section cross-sectional area of bamboo shape buckling restrained brace core component is at least the 1.6 of circular energy dissipating section
Times, 1.6 be about the over-strength factor after core component surrender, therefore round and elastic section remains elasticity, contrasts traditional flexing about
Bundle branch support need to set ribbed stiffener to ensure its stability, the end bullet of round and elastic section of the present invention in core component without constraint
Property section although have subregion in no restrained condition, but not local buckling occurs, construction is simpler.
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.
7. since frictional force exists, buckling restrained brace core component end axle power is more than middle part axle power, according to each circle
The axle power that energy dissipating section is born determines its required stability bearing capacity, makes the length of the multiple circular energy dissipating sections of core component past from both ends
Middle gradually increase, can make full use of material.
Brief description of the drawings
Fig. 1 is bamboo shape buckling restrained brace core component schematic diagram；
Fig. 2 is the bamboo shape buckling restrained brace core component and link enhancement block diagram of the embodiment of the present invention 1；
Fig. 3 is the bamboo shape buckling restrained brace schematic diagram of the embodiment of the present invention 1；
Fig. 4 is the bamboo shape buckling restrained brace profile of the embodiment of the present invention 1；
Fig. 5 is the bamboo shape buckling restrained brace link enhancement block diagram of the embodiment of the present invention 1；
Fig. 6 is the bamboo shape buckling restrained brace link enhancement feature profile figure of the embodiment of the present invention 1；
Fig. 7 is the outer constraint component and core component cross-sectional view of the embodiment of the present invention 1；
Fig. 8 is the bamboo shape buckling restrained brace core component plan view of the embodiment of the present invention 2；
Fig. 9 is compressive deformation schematic diagram when being not provided with strengthening cylinder in bamboo shape buckling restrained brace；
Figure 10 is that compressive deformation schematic diagram when strengthening cylinder is set in bamboo shape buckling restrained brace.
Embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1
As shown in Fig. 1~7：A kind of bamboo shape buckling restrained brace, including core component 1, outer constraint component 2 and enhancing connection
Component 3, core component 1 are distributed alternately along longitudinal direction by multiple circle energy dissipating section 1-1 and round and elastic section 1-2 and formed, circular energy dissipating
Section 1-1 and round and elastic section 1-2 coaxial lines, circular energy dissipating section 1-1 areas of section are less than round and elastic section 1-2, by round and elastic
Section 1-2 cuts to be formed along surrounding, and core component 1 is located inside the outer constraint component 2, core component round and elastic section 1-2 tetra-
All to be close to the inner side of outer constraint component 2 or tangent, round and elastic section 1-2 is by multiple middle spring section of 1-2- for not being connected directly
1 and two end stretch section 1-2-2 are formed, there are larger gap between circular energy dissipating section 1-1 and outer constraint component 2, more than circle
Gap between shape stretch section 1-2 and outer constraint component 2, the enhancing connecting component 3 is by node section 3-1, linkage section 3-2 and adds
Strong cylinder 3-3 is formed, and the node section 3-1 will be supported to be connected with the gusset plate in structure, linkage section 3-2 and end stretch section 1-2-
2 consolidations, strengthen the periphery for being located at constraint component 2 on the inside of cylinder 3-3, and are close to the outside of constraint component 2.
The cross-sectional area of the round and elastic section 1-2 of core component is at least 1.6 times of circular energy dissipating section 1-1.
Embodiment 2
As shown in Figure 8：The present embodiment is identical with 1 remainder of embodiment, and difference is that the core component is multiple
The length of circular energy dissipating section 1-1 gradually increases from both ends toward middle.
Of length no more than 8 times of its radius of the single circular energy dissipating section 1-1 of core component.
As shown in Figures 9 and 10, it is to be not provided with and set compressive deformation schematic diagram when strengthening cylinder in bamboo shape buckling restrained brace.
If being not provided with strengthening cylinder (as shown in Figure 9) in enhancing connecting component, core component end stretch section is curved in the end that axle power produces
Square effect is lower to be surrendered, and produce plastic hinge and notable corner α, so that the effect of meeting enlarged end moment of flexure, serious to reduce
The overall stability of support.Strengthen setting in connecting component to strengthen after cylinder (as shown in Figure 10), due to strengthening cylinder with very big firm
Degree, can regard rigid body as, the monolithic stability computational length L of support can reduce, and the stability bearing capacity of support significantly increases；This outer support
When end rotates, strengthen being in contact between cylinder and constraint component, the rotation of core component end stretch section can be limited,
The generation of plastic hinge is avoided, reduces adverse effect of the end moment of flexure to support monolithic stability.
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Some 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 clear and definite each part is realized.
Claims (5)
- A kind of 1. bamboo shape buckling restrained brace, it is characterised in that：Including core component, outer constraint component and enhancing connecting component；The core component is made of multiple circular energy dissipating sections and round and elastic section along the alternate setting of longitudinally coaxial line, round and elastic Section includes multiple middle spring sections and two end stretch sections, and circular energy dissipating section area of section is less than round and elastic section；The core component is located inside the outer constraint component, core component round and elastic section surrounding and outer constraint component inner side It is close to or tangent, there are gap between circular energy dissipating section and outer constraint component；The enhancing connecting component is made of node section, linkage section and reinforcement cylinder, and the node section will support and the section in structure Contact plate is connected, and the end stretch section consolidation of linkage section and core component, strengthens cylinder parcel constraint component, and strengthen the inner side of cylinder with It is close on the outside of constraint component.
- 2. bamboo shape buckling restrained brace according to claim 1, it is characterised in that：The circle energy dissipating section is by round and elastic Section cuts to be formed along surrounding.
- 3. bamboo shape buckling restrained brace according to claim 1, it is characterised in that：The core component round and elastic section Cross-sectional area is at least 1.6 times of circular energy dissipating section.
- 4. bamboo shape buckling restrained brace according to claim 1, it is characterised in that：The multiple circular energy dissipatings of the core component The length of section gradually increases from both ends toward middle.
- 5. bamboo shape buckling restrained brace according to claim 1, it is characterised in that：The single circular steel of core component disappears Of length no more than 8 times of its radius of energy section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121121.0A CN105714952B (en) | 2016-03-03 | 2016-03-03 | Bamboo shape buckling restrained brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121121.0A CN105714952B (en) | 2016-03-03 | 2016-03-03 | Bamboo shape buckling restrained brace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105714952A CN105714952A (en) | 2016-06-29 |
| CN105714952B true CN105714952B (en) | 2018-05-15 |
Family
ID=56156434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610121121.0A Active CN105714952B (en) | 2016-03-03 | 2016-03-03 | Bamboo shape buckling restrained brace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105714952B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836927B (en) * | 2017-01-25 | 2019-08-13 | 东南大学 | Pole energy consumption bar |
| CN106760854B (en) * | 2017-01-25 | 2019-01-25 | 东南大学 | Rectilinear laemodipodiform pole energy consumption bar |
| CN106760855B (en) * | 2017-01-25 | 2018-11-16 | 东南大学 | Laemodipodiform pole energy consumption bar |
| CN108036344B (en) * | 2018-01-03 | 2023-07-14 | 福建龙净环保股份有限公司 | Flue structure, pipe support structure and connecting piece thereof |
| CN109339545A (en) * | 2018-11-28 | 2019-02-15 | 上海材料研究所 | Buckling-restrained energy-dissipation |
| 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 |
| CN113175115B (en) * | 2021-05-11 | 2022-11-15 | 四川大学 | Double-rigidity buckling restrained damper |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005194794A (en) * | 2004-01-08 | 2005-07-21 | Shimizu Corp | Brace damper |
| CN101413298A (en) * | 2008-11-19 | 2009-04-22 | 东南大学 | Light triple-heavy metal circular tube flexion restriction support energy dissipating machine |
| CN202672400U (en) * | 2012-01-12 | 2013-01-16 | 郭奇 | Novel bamboo type steel tube buckling restricting energy consumption support |
| CN102926478A (en) * | 2012-10-25 | 2013-02-13 | 沈阳建筑大学 | U-bar isolation anti-buckling energy dissipation support |
| CN103711221A (en) * | 2013-12-30 | 2014-04-09 | 北京工业大学 | Box iron grooving type H-shaped variable-cross-section steel core buckling-prevention limiting and energy-consumption supporting component |
| CN103741829A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Novel flexion and energy consumption preventing limit support component of I-shaped variable cross-section steel core of bolt-assembled rectangular steel tube |
| CN203569720U (en) * | 2013-11-05 | 2014-04-30 | 南京工业大学 | Self-resetting triple steel pipe buckling restrained brace |
-
2016
- 2016-03-03 CN CN201610121121.0A patent/CN105714952B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005194794A (en) * | 2004-01-08 | 2005-07-21 | Shimizu Corp | Brace damper |
| CN101413298A (en) * | 2008-11-19 | 2009-04-22 | 东南大学 | Light triple-heavy metal circular tube flexion restriction support energy dissipating machine |
| CN202672400U (en) * | 2012-01-12 | 2013-01-16 | 郭奇 | Novel bamboo type steel tube buckling restricting energy consumption support |
| CN102926478A (en) * | 2012-10-25 | 2013-02-13 | 沈阳建筑大学 | U-bar isolation anti-buckling energy dissipation support |
| CN203569720U (en) * | 2013-11-05 | 2014-04-30 | 南京工业大学 | Self-resetting triple steel pipe buckling restrained brace |
| CN103711221A (en) * | 2013-12-30 | 2014-04-09 | 北京工业大学 | Box iron grooving type H-shaped variable-cross-section steel core buckling-prevention limiting and energy-consumption supporting component |
| CN103741829A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Novel flexion and energy consumption preventing limit support component of I-shaped variable cross-section steel core of bolt-assembled rectangular steel tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105714952A (en) | 2016-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105714952B (en) | Bamboo shape buckling restrained brace | |
| CN105735504B (en) | Rectangle ring buckling restrained brace | |
| CN206309097U (en) | The replaceable assembled buckling restrained brace of section is surrendered after one kind shake | |
| CN107740626B (en) | A kind of expansion cross-shaped steel SRC column with multistage composite damper | |
| CN101463634B (en) | Buckling-restrained brace with end having energy dissipation lead box and method for producing the same | |
| CN110067425B (en) | High-shock-resistance buckling-restrained brace | |
| CN206298980U (en) | Shape memory alloy spring damper | |
| CN101967853B (en) | Fiber reinforce plastic (FRP)-rubber-steel composite pipe concrete structure | |
| CN106760854B (en) | Rectilinear laemodipodiform pole energy consumption bar | |
| CN104005490B (en) | Anti-buckling limit support member for reinforcing post-yield stiffness | |
| TW201400678A (en) | Composite damping joint | |
| CN106836927B (en) | Pole energy consumption bar | |
| WO2023137929A1 (en) | Anti-seismic component with dual functions of energy consumption and load bearing, and buffer | |
| CN105604205B (en) | Modularization bamboo shape buckling restrained brace | |
| CN101974950A (en) | Rod type core bar bending restrain steel support | |
| CN106760855B (en) | Laemodipodiform pole energy consumption bar | |
| CN205399715U (en) | Serial -type bamboo shape buckling restrained brace | |
| CN206458146U (en) | Pole power consumption bar | |
| CN210288683U (en) | Connection structure for improving earthquake resistance of PC frame node | |
| CN208202202U (en) | A kind of semi-girder truss main diagonal of band bending surrender Wasted-energy steel plate | |
| CN112031197B (en) | Novel damping energy dissipater device | |
| CN104532978B (en) | A kind of anti-buckling support of vierendeel truss restricted type | |
| CN212583706U (en) | Force transferring and pressure reducing stabilizing system at top of bridge and culvert | |
| CN106049699A (en) | Sleeve restraint anti-buckling support provided with staggered pyramid-shaped energy dissipation units | |
| CN107780554B (en) | Buckling restrained brace component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |