CN105507132A - Torsional three-tube buckling restrained brace - Google Patents
Torsional three-tube buckling restrained brace Download PDFInfo
- Publication number
- CN105507132A CN105507132A CN201510874611.3A CN201510874611A CN105507132A CN 105507132 A CN105507132 A CN 105507132A CN 201510874611 A CN201510874611 A CN 201510874611A CN 105507132 A CN105507132 A CN 105507132A
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- CN
- China
- Prior art keywords
- steel pipe
- buckling restrained
- restrained brace
- pipe
- steel tube
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a torsional three-tube buckling restrained brace. The torsional three-tube buckling restrained brace comprises a brace body and end plates arranged at the two ends of the brace body. The brace body comprises an inner restraint steel tube, a middle torsion steel tube and an outer restraint steel tube which are sequentially arranged from inside to outside. The inner restraint steel tube and the outer restraint steel tube are round steel tubes, the lower end of the inner restraint steel tube and the lower end of the outer restraint steel tube are fixedly connected with the end plates, the upper end of the inner restraint steel tube and the upper end of the outer restraint steel tube are suspended in midair, the middle torsion steel tube is a round steel tube with the middle provided with a spiral slot, and the upper end and the lower end of the middle torsion steel tube are fixedly connected with the end plates. Compared with the prior art, the torsional three-tube buckling restrained brace has the advantages of being high in deformation performance, long in fatigue life, good in restraint performance, low in mass and the like.
Description
Technical field
The present invention relates to the seismic design field of the structure that builds a bridge, especially relate to a kind of twist mode three pipe buckling restrained brace.
Background technology
Existing buckling restrained brace is consumed energy by the axial tension distortion in core cross section mostly, destroy and often occur in the commissure of end stiffener rib or the non-slipping block end of centre, cause support maximum deformation quantity less (mean strain is lower than 3%), or need price high but the good Low Yield Point Steel of ductility to improve the ductility of support.On the other hand, because the tangent stiffness after steel surrender levels off to zero, cause the permanent set of buckling restrained brace structural system comparatively large, become the shortcoming that it is main.Along with taking place frequently of global super large earthquake in recent years, the antidetonation of structure is also more and more higher to the requirement supporting maximum deformation quantity and its extremely low cycle fatigue performance, simultaneously also more and more higher to the permanent set control overflow after its shake.How to ensure that support still can normally work after can standing the attack of repeatedly violent earthquake, to ensure it without the need to changing in total life cycle of work, relevant design concept also more and more comes into one's own.Meanwhile, in order to improve the recoverability energy of structure, it is also proposed requirement to strengthening rigidity after the surrender of buckling restrained brace.
Summary of the invention
Object of the present invention is exactly the twist mode three pipe buckling restrained brace providing a kind of high deformation performance, high fatigue life, restrictive good, light weight in order to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
A kind of twist mode three pipe buckling restrained brace, comprise supportive body and the end plate being arranged on supportive body two ends, described supportive body comprises the internal constraint steel pipe, middle part torsion steel pipe and the external constraint steel pipe that set gradually from inside to outside, described internal constraint steel pipe and external constraint steel pipe are round steel pipe, lower end is fixedly connected with end plate, upper end is unsettled, and it is the round steel pipe that middle part offers spirality grooving that steel pipe is reversed at described middle part, and upper and lower two ends are all fixedly connected with end plate.
Described twist mode three pipe buckling restrained brace also comprises multiple end stiffener rib, and described end stiffener rib is fixedly connected with the upper and lower of end plate and external constraint steel pipe respectively.
Described internal constraint steel pipe and the length of external constraint steel pipe are all greater than middle part and reverse the length that steel pipe offers spirality slot portion.
Steel pipe is reversed by round steel pipe cutting forming or by dull and stereotyped cold-formed in described middle part.
Described internal constraint steel pipe is hollow structure.
Described middle part is reversed and is provided with without adhesives between steel pipe and external constraint steel pipe, and described middle part is reversed between steel pipe and internal constraint steel pipe and is provided with without adhesives.
Compared with prior art, the present invention has the following advantages:
One, high deformation performance, high fatigue life: the present invention is made up of three steel pipes, inside is common steel tube, middle part is the twist mode steel pipe that local weakens, outside is smooth bar pipe, inside and outside steel pipe provides lateral restraint for middle part twist mode steel pipe, because middle part twist mode steel pipe is weakened, according to twist mode metal damper principle, under large deformation, necking deformation can finally occur in weakened cross section.
Two, restrictive good: to make relative rigid motion between internal constraint steel pipe and middle part twist mode steel pipe less by inside and outside constraint steel pipe with the welding of bottom plate, thus reaching the effect improving component deformability under the hysteresis such as earthquake load, the energy dissipation capacity comparing two-tube energy dissipation brace is better.
Three, light weight: the outside steel pipe after the present invention adopts middle part to weaken and the inside steel pipe of hollow, significantly reduce quality of the present invention.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation with cross section in Fig. 1.
Fig. 3 is the sectional drawing of A-A section in Fig. 1.
Fig. 4 is the sectional drawing of B-B section in Fig. 1.
Fig. 5 is the sectional drawing of C-C section in Fig. 1.
1, internal constraint steel pipe, 2, middle part reverses steel pipe, 3, external constraint steel pipe, 4, non-cohesive material, 5, end stiffener rib, 6, end plate.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment:
As Figure 1-5, for by cut round steel pipe or dull and stereotyped cold-formed in the middle part of core twist mode steel pipe, the round steel pipe cross section of its upper and lower side weakens, in order to be connected with upper and lower side.Inside and outside steel pipe welds with lower end plate, and inside and outside steel pipe length is greater than the steel pipe of middle twist section, thinks that middle the anti-buckling of twist mode steel pipe provides constraint, prevents it under large deformation, buckling failure occurring.Meanwhile, inner steel pipe, filled by non-cohesive material between outside steel pipe and middle part steel pipe, to reduce the frictional force produced due to contact between three.Assembling process is as follows: first make middle part twist mode steel pipe, then inside and outside steel pipe is enclosed non-cohesive material, weld successively with lower end plate; Middle part steel pipe is welded with stiffening rib and upper end plate.
The technical issues that need to address of the present invention are: the deficiency overcoming background technology, a kind of two-tube buckling restrained brace of lightweight all-steel twist mode with high deformation performance and high fatigue life is proposed, it is made up of three steel pipes, inside is common steel tube, middle part is the twist mode steel pipe that local weakens, outside is smooth bar pipe, and inside and outside steel pipe provides lateral restraint for middle part twist mode steel pipe.The concrete technical scheme of twist mode buckling restrained brace is: assembly comprises internal constraint steel pipe, non-cohesive material, middle part twist mode steel pipe, external constraint steel pipe, end plate and stiffening rib, and primary clustering is made up of steel, thus greatly reduces the deadweight of support.Wherein, middle part twist mode steel pipe is due to weakened, and under large deformation, necking deformation can finally occur in weakened cross section, and can not as buckling restrained brace.Make relative rigid motion between internal constraint steel pipe and middle part twist mode steel pipe less by inside and outside constraint steel pipe with the welding of bottom plate, thus reaching the effect improving component deformability under the hysteresis such as earthquake load, the energy dissipation capacity comparing two-tube energy dissipation brace is better.In addition, the axial deformation of support will be converted into the torsional deflection of middle part steel pipe, thus is equivalent to a twist mode metal damper.As everyone knows, round steel pipe by twisting strain ability very good, and corresponding hysteretic characteristic is stablized, and tangent stiffness after there is larger surrender, thus this support can not only be made to have stable and excellent circulation energy dissipation capacity, have larger second order rigidity simultaneously, thus greatly improve anti-seismic performance and the rear recoverability energy of shake of structure.
Claims (6)
1. a twist mode three pipe buckling restrained brace, comprise supportive body and the end plate (6) being arranged on supportive body two ends, it is characterized in that, described supportive body comprises the internal constraint steel pipe (1) set gradually from inside to outside, steel pipe (2) and external constraint steel pipe (3) are reversed in middle part, described internal constraint steel pipe (1) and external constraint steel pipe (3) are round steel pipe, lower end is fixedly connected with end plate (6), upper end is unsettled, described middle part is reversed steel pipe (2) for middle part and is offered the round steel pipe of spirality grooving, upper and lower two ends are all fixedly connected with end plate (6).
2. a kind of twist mode three pipe buckling restrained brace according to claim 1, it is characterized in that, described twist mode three pipe buckling restrained brace also comprises multiple end stiffener rib (5), and described end stiffener rib (5) is fixedly connected with the upper and lower of end plate (6) and external constraint steel pipe (3) respectively.
3. a kind of twist mode three pipe buckling restrained brace according to claim 1, it is characterized in that, described internal constraint steel pipe (1) and the length of external constraint steel pipe (3) are all greater than middle part and reverse the length that steel pipe (2) offers spirality slot portion.
4. a kind of twist mode three pipe buckling restrained brace according to claim 1, is characterized in that, steel pipe (2) is reversed by round steel pipe cutting forming or by dull and stereotyped cold-formed in described middle part.
5. a kind of twist mode three pipe buckling restrained brace according to claim 1, is characterized in that, described internal constraint steel pipe (1) is hollow structure.
6. a kind of twist mode three pipe buckling restrained brace according to claim 1, it is characterized in that, described middle part is reversed and is provided with without adhesives (4) between steel pipe (2) and external constraint steel pipe (3), and described middle part is reversed between steel pipe (2) and internal constraint steel pipe (1) and is provided with without adhesives (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510874611.3A CN105507132A (en) | 2015-12-02 | 2015-12-02 | Torsional three-tube buckling restrained brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510874611.3A CN105507132A (en) | 2015-12-02 | 2015-12-02 | Torsional three-tube buckling restrained brace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105507132A true CN105507132A (en) | 2016-04-20 |
Family
ID=55715411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510874611.3A Pending CN105507132A (en) | 2015-12-02 | 2015-12-02 | Torsional three-tube buckling restrained brace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105507132A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023137929A1 (en) * | 2022-01-18 | 2023-07-27 | 湖南大学 | Anti-seismic component with dual functions of energy consumption and load bearing, and buffer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007001103A1 (en) * | 2005-06-27 | 2007-01-04 | Industry-Academic Cooperation Foundation, Yonsei University | Girder bridge protection device using sacrifice mems |
| CN201526099U (en) * | 2009-10-23 | 2010-07-14 | 广州大学 | Triple circular steel tube buckling-restrained anti-seismic support |
| CN103572858A (en) * | 2013-11-05 | 2014-02-12 | 南京工业大学 | Self-resetting triple steel pipe buckling restrained brace and manufacturing process thereof |
| CN104278770A (en) * | 2014-10-27 | 2015-01-14 | 沈阳建筑大学 | Buckling buckling-restrained energy-dissipation brace |
| CN204326288U (en) * | 2014-04-22 | 2015-05-13 | 胡孔国 | The anti-buckling support of triple round steel pipe |
| CN105002999A (en) * | 2015-08-05 | 2015-10-28 | 清华大学 | Metal buckling constraint support for rear-mounted sleeve and construction method thereof |
-
2015
- 2015-12-02 CN CN201510874611.3A patent/CN105507132A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007001103A1 (en) * | 2005-06-27 | 2007-01-04 | Industry-Academic Cooperation Foundation, Yonsei University | Girder bridge protection device using sacrifice mems |
| CN201526099U (en) * | 2009-10-23 | 2010-07-14 | 广州大学 | Triple circular steel tube buckling-restrained anti-seismic support |
| CN103572858A (en) * | 2013-11-05 | 2014-02-12 | 南京工业大学 | Self-resetting triple steel pipe buckling restrained brace and manufacturing process thereof |
| CN204326288U (en) * | 2014-04-22 | 2015-05-13 | 胡孔国 | The anti-buckling support of triple round steel pipe |
| CN104278770A (en) * | 2014-10-27 | 2015-01-14 | 沈阳建筑大学 | Buckling buckling-restrained energy-dissipation brace |
| CN105002999A (en) * | 2015-08-05 | 2015-10-28 | 清华大学 | Metal buckling constraint support for rear-mounted sleeve and construction method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 邢百朋: "新型双向扭转型金属阻尼器的理论研究", 《特种结构》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023137929A1 (en) * | 2022-01-18 | 2023-07-27 | 湖南大学 | Anti-seismic component with dual functions of energy consumption and load bearing, and buffer |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160420 |
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