CN105421612A - Torsional type dual-pipe bent constraining support - Google Patents
Torsional type dual-pipe bent constraining support Download PDFInfo
- Publication number
- CN105421612A CN105421612A CN201510874599.6A CN201510874599A CN105421612A CN 105421612 A CN105421612 A CN 105421612A CN 201510874599 A CN201510874599 A CN 201510874599A CN 105421612 A CN105421612 A CN 105421612A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- outside
- twist mode
- restrained brace
- buckling restrained
- 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.)
- Pending
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)
Abstract
The invention relates to a torsional type dual-pipe bent constraining support which comprises a support body and end plates at the two ends of the support body. The support body comprises an inner constraining steel pipe, a non-adhesive material and an outer torsional steel pipe which are sequentially arranged from inside to outside. The inner constraining steel pipe is a round steel pipe. The lower end of the inner restraining steel pipe is fixedly connected with the corresponding end plate, and the upper end of the inner restraining steel pipe is suspended. The outer torsional steel pipe is a round steel pipe with a spiral cutting groove in the middle. The upper end and the lower end of the outer torsional steel pipe are fixedly connected with the end plates respectively. Compared with the prior art, the torsional type dual-pipe bent constraining support has the advantages of being high in deformation performance, long in fatigue life, high in constraining 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 the two-tube buckling restrained brace of a kind of twist mode.
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 provide a kind of high deformation performance, high fatigue life, the two-tube buckling restrained brace of restrictive twist mode that is good, light weight to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
The two-tube buckling restrained brace of a kind of twist mode, comprise supportive body and the end plate being arranged on supportive body two ends, described supportive body comprise set gradually from inside to outside internal constraint steel pipe, without adhesives with outside reverse steel pipe, described internal constraint steel pipe is 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 in described outside, and upper and lower two ends are all fixedly connected with end plate.
The two-tube buckling restrained brace of described twist mode also comprises multiple end stiffener rib, and described end stiffener rib is fixedly connected with end plate and the outside upper and lower reversing steel pipe respectively.
The length of described internal constraint steel pipe is greater than the length that outside torsion 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 outside.
Described internal constraint steel pipe is hollow structure.
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 two steel pipes, inside is common steel tube, outside is the twist mode steel pipe that local weakens, inner steel pipe provides lateral restraint for outside steel pipe, because outside 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 outside twist mode steel pipe less by internal constraint steel pipe and the welding of bottom plate, thus reach the effect improving component deformability under the hysteresis such as earthquake load.
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, outside reverse steel pipe, 3, non-cohesive material, 4, end stiffener rib, 5, 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, be that the round steel pipe cross section of outside parts upper and lower side weakens, in order to be connected with top by cutting round steel pipe or passing through dull and stereotyped cold-formed in the middle part of this example China and foreign countries side component.Inner steel pipe welds with lower end plate, and internal steel length of tube is greater than the steel pipe of the twist section in outside, thinks that the anti-buckling of twist mode steel pipe in outside provides constraint, prevents it under large deformation, buckling failure occurring., filled by non-cohesive material between inner steel pipe and outside steel pipe, to reduce the frictional force produced due to contact between the two meanwhile.Assembling process is as follows: first make outside twist mode steel pipe, more inner steel pipe is enclosed non-cohesive material, and be welded in lower end plate; Outside steel pipe is welded with stiffening rib, is enclosed within internal steel tube outside, and weld with two ends 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 two steel pipes, inside is common steel tube, outside be the twist mode steel pipe of local weakening, and inner steel pipe provides lateral restraint for outside steel pipe.The concrete technical scheme of twist mode buckling restrained brace is: assembly comprises internal constraint steel pipe, non-cohesive material, outside twist mode steel pipe, end plate and stiffening rib, and primary clustering is made up of steel, thus greatly reduces the deadweight of support.Wherein, outside twist mode steel pipe is due to weakened; under large deformation, necking deformation can finally occur in weakened cross section, and can not as buckling restrained brace (fracture often can occur in weld seam or non-slipping block place, thus causes ductile performance poor).Make relative rigid motion between internal constraint steel pipe and outside twist mode steel pipe less by internal constraint steel pipe and the welding of bottom plate, thus reach the effect improving component deformability under the hysteresis such as earthquake load.In addition, the axial deformation of support will be converted into the torsional deflection of outside 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 (5)
1. the two-tube buckling restrained brace of twist mode, comprise supportive body and the end plate (5) being arranged on supportive body two ends, it is characterized in that, described supportive body comprise set gradually from inside to outside internal constraint steel pipe (1), without adhesives (2) with outside reverse steel pipe (3), described internal constraint steel pipe (1) is round steel pipe, lower end is fixedly connected with end plate (5), upper end is unsettled, described outside is reversed steel pipe (3) for middle part and is offered the round steel pipe of spirality grooving, and upper and lower two ends are all fixedly connected with end plate (5).
2. the two-tube buckling restrained brace of a kind of twist mode according to claim 1, it is characterized in that, the two-tube buckling restrained brace of described twist mode also comprises multiple end stiffener rib (4), and described end stiffener rib (4) is fixedly connected with end plate (5) and the outside upper and lower reversing steel pipe (3) respectively.
3. the two-tube buckling restrained brace of a kind of twist mode according to claim 1, is characterized in that, the length of described internal constraint steel pipe (1) is greater than the length that outside torsion steel pipe (3) offers spirality slot portion.
4. the two-tube buckling restrained brace of a kind of twist mode according to claim 1, is characterized in that, steel pipe (3) is reversed by round steel pipe cutting forming or by dull and stereotyped cold-formed in described outside.
5. the two-tube buckling restrained brace of a kind of twist mode according to claim 1, is characterized in that, described internal constraint steel pipe (1) is hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510874599.6A CN105421612A (en) | 2015-12-02 | 2015-12-02 | Torsional type dual-pipe bent constraining support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510874599.6A CN105421612A (en) | 2015-12-02 | 2015-12-02 | Torsional type dual-pipe bent constraining support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105421612A true CN105421612A (en) | 2016-03-23 |
Family
ID=55500118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510874599.6A Pending CN105421612A (en) | 2015-12-02 | 2015-12-02 | Torsional type dual-pipe bent constraining support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105421612A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057489A (en) * | 2017-05-17 | 2018-12-21 | 大连大学 | Reverse anti-unstability device |
| CN109306810A (en) * | 2018-11-16 | 2019-02-05 | 山东省工程地震研究中心 | A kind of anti-buckling support of the multiple steel pipe all steel of twin-core material with double yield points |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010095909A (en) * | 2008-10-16 | 2010-04-30 | Ohbayashi Corp | Method for setting parameter associated with control of torsional vibration of structure |
| CN102535671A (en) * | 2012-02-14 | 2012-07-04 | 扬州大学 | Bidirectional torsional lead shear damper |
| CN202646500U (en) * | 2012-05-11 | 2013-01-02 | 青岛科而泰环境控制技术有限公司 | Friction damper |
| 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 CN201510874599.6A patent/CN105421612A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010095909A (en) * | 2008-10-16 | 2010-04-30 | Ohbayashi Corp | Method for setting parameter associated with control of torsional vibration of structure |
| CN102535671A (en) * | 2012-02-14 | 2012-07-04 | 扬州大学 | Bidirectional torsional lead shear damper |
| CN202646500U (en) * | 2012-05-11 | 2013-01-02 | 青岛科而泰环境控制技术有限公司 | Friction damper |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057489A (en) * | 2017-05-17 | 2018-12-21 | 大连大学 | Reverse anti-unstability device |
| CN109057489B (en) * | 2017-05-17 | 2020-06-02 | 大连大学 | Torsion anti-instability device |
| CN109306810A (en) * | 2018-11-16 | 2019-02-05 | 山东省工程地震研究中心 | A kind of anti-buckling support of the multiple steel pipe all steel of twin-core material with double yield points |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104005490B (en) | Anti-buckling limit support member for reinforcing post-yield stiffness | |
| CN107386479A (en) | A kind of repeatedly surrender type shock-absorbing support component | |
| CN106760854B (en) | Rectilinear laemodipodiform pole energy consumption bar | |
| US20100031600A1 (en) | Load Bearing Frame | |
| CN105421612A (en) | Torsional type dual-pipe bent constraining support | |
| CN106836927B (en) | Pole energy consumption bar | |
| CN102762885A (en) | Metal connection fitting | |
| CN105270090B (en) | A kind of rear-guard electric car bearing-type rear axle | |
| CN107574944B (en) | A kind of anti-buckling fan-shaped metal damper applied to assembled beam-column node region | |
| CN105507132A (en) | Torsional three-tube buckling restrained brace | |
| CN201809863U (en) | Beam-column rigid coupling joint for antiseismic steel structural frame | |
| CN201172902Y (en) | Hinge connection anti-flexion support | |
| CN204804088U (en) | Compound energy dissipation shock attenuation of assembled is supported | |
| CN207296057U (en) | Double ranks surrender energy dissipating bracing members | |
| CN104989004A (en) | Assembled type compound energy dissipation damping support | |
| CN206458146U (en) | Pole power consumption bar | |
| CN205777099U (en) | A kind of huge combined steel and concrete column of built-in lattice reinforcing bar | |
| CN205781452U (en) | A kind of hexagon seamless titanium tube | |
| JP5741852B2 (en) | Double tube structure | |
| CN208934170U (en) | A kind of assembled modified tone stiffness and damping composite viscoelasticity support | |
| CN107859404A (en) | A kind of metal energy-dissipation damper | |
| CN107460965A (en) | A kind of new low more yield point all-steel buckling restrained braces of residual deformation | |
| CN205857407U (en) | Inner circle foreign side hollow sandwich band presstressed reinforcing steel concrete-filled steel tube truss tubular joint | |
| CN209384429U (en) | A kind of anti-buckling supporting damping device | |
| CN108915114B (en) | Drawknot type buckling-restrained steel-damper support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |
|
| RJ01 | Rejection of invention patent application after publication |