CN103711222B - The anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind of - Google Patents
The anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind of Download PDFInfo
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- CN103711222B CN103711222B CN201310745337.0A CN201310745337A CN103711222B CN 103711222 B CN103711222 B CN 103711222B CN 201310745337 A CN201310745337 A CN 201310745337A CN 103711222 B CN103711222 B CN 103711222B
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Abstract
The anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind of, belong to anti-buckling spacing energy-consumption supporting member technical field, I-shaped steel core is followed successively by non-variable cross-section section a from both ends to the middle, reduced cross-sectional section b and linkage section c, reduced cross-sectional section b is respectively near the two ends of outer constraint steel pipe, the corresponding reduced cross-sectional section b of stopper slot, stopper slot place is welded with T section baffle plate, I-shaped steel core reduced cross-sectional section b inside contracts with 60 ° of slope angles, it is parallel with the cross steel core of reduced cross-sectional section that T section baffle plate inserts stopper slot web, web and the I-shaped steel core section place of inside contracting of T section baffle plate leave space.Time stressed, first steel core consumes energy surrender, and when steel core yield deformation is subject to the internal baffle restriction of outer steel pipe, after outer steel pipe and surrender, steel core participates in stressed jointly.Outer steel pipe rigidity is comparatively large, and after surrender, the rigidity of steel core effectively can limit the sidesway of the rear structural entity of steel core surrender in addition, reaches spacing effect.
Description
Technical field
The invention belongs to anti-buckling spacing energy-consumption supporting member technical field, relate to a kind of engineering structures energy dissipation and spacing supporting member, the buckling-restrained energy-dissipation component of especially a kind of steel core to be I-shaped, the outer confinement sleeve of variable cross-section be interior baffled formula.When anti-buckling support is stressed, first the steel core of subcontract size surrenders power consumption, and distortion acquires a certain degree steel core by the built-in baffle of outer steel pipe, drives the spacing work in outer steel pipe participation later stage thus.
Background technology
Buckling restrained brace is also known as anti-buckling support or BRB (Bucklingrestrainedbrace), product technology develops the Japan in 1973 the earliest, a collection of Japanese scholars at that time successfully have developed wall board type buckling-restrained energy-dissipation the earliest, and has carried out to it tensile compression test adding different non-cohesive material; After 1994 Nian Bei ridge earthquakes, the U.S. also starts to carry out corresponding design studies and vast scale test to putting buckling support system, the simultaneously binding isotherm computational analysis advantage of this support system compared with other support systems.Anti-buckling support by supporting steel core, peripheral constraint component forms, and can be framework or bent structure provides very large anti-side rigidity and bearing capacity, adopts the structural system supported to apply very extensive in building structure.The dilatancy produced when being usually provided with non-cohesive material or suitable gap between the two to discharge and to support steel core pressurized.Outer sleeve and packing material only retrain steel core compressive buckling, make steel core all can enter surrender in tension with by pressure, and thus, the Hysteresis Behavior that anti-buckling constraint supports is excellent.
Traditional curvature-prevention support component has following characteristics: only steel core is connected with structural element, load is born by steel core completely, outer steel pipe and packing material only retrain steel core compressive buckling, prevent steel core buckle in compression, make steel core all can enter surrender in tension with by pressure.Namely only consider steel core one power consumption core, have ignored the axial rigidity contribution of outer constraint sleeve.The anti-buckling support of current research and development mainly improves emphatically its energy dissipation capacity, less to the position-limiting action research of anti-buckling support.Given this, we propose a kind of novel anti-buckling support of applying outer steel pipe rigidity and surrendering that rear steel core rigidity carries out displacement structure control by putting forth effort.
Summary of the invention
The present invention proposes the anti-buckling spacing energy-consumption supporting member of a kind of variable cross-section, solve the problem that existing anti-buckling support does not have displacement control device.The rectangular steel tube that outer constraint steel pipe is baffled in adopting, steel core adopts the stopper slot tabling of variable cross-section design and outer constraint steel pipe, thus after steel core surrender, utilize the outer axial rigidity retraining steel pipe to reach spacing target.
For achieving the above object, the present invention adopts following technical scheme:
The anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind of, be made up of I-shaped steel core and outer constraint steel pipe, I-shaped steel core is positioned at outer constraint steel duct, two rectangle light-gauge steel section concrete filled steel tubes are filled in two rectangular region that outer constraint steel pipe and I-shaped steel core are formed, it is characterized in that, described I-shaped steel core is followed successively by linkage section a from both ends to the middle, reduced cross-sectional section b and non-variable cross-section section c, non-variable cross-section section c is between the two sections section of reducing b, reduced cross-sectional section b is respectively near the two ends of outer constraint steel pipe, described outer constraint steel pipe is the square steel pipe that 2 faces have stopper slot, the corresponding reduced cross-sectional section b of stopper slot, stopper slot place is welded with T section baffle plate, the edge of a wing of T section baffle plate is welded on the external surface of outer constraint steel pipe, web vertically inserts stopper slot, I-shaped steel core reduced cross-sectional section b two ends reduce with 60 ° of slope angles, the web that T section baffle plate inserts stopper slot is parallel with the I-shaped steel core end of reduced cross-sectional section, namely there are 60 ° of slope angles equally.The axial cross section that T section baffle plate inserts stopper slot web is trapezoidal, and leaves space with the I-shaped steel core section place of inside contracting.
The length of side of described outer constraint steel pipe is greater than I-shaped steel core non-variable cross-section section width, and the gap between outer constraint steel pipe, I-shaped steel core and rectangle light-gauge steel section concrete filled steel tube arranges non-cohesive material layer.Stopper slot is positioned at apart from outer constraint steel tube end part 1/12 length e place, and slotting length d is the length of 1/6 outer constraint steel pipe, is also the length of T-shaped double angle baffle plate simultaneously.Set welding double angle T-shaped baffle plate is by inserting slotted eye outside stopper slot and being welded on outer steel pipe.Longitudinal two ends of inserting the T-shaped baffle plate web of slotted eye reduce with the slope angle of 60 ° respectively, and the longitudinal cross-section of T-shaped baffle plate is trapezoidal thus.Described core is internal withdraw type variable cross-section core, in arranging baffle plate and sentence the slope angle subcontract cross section of 60 °, double angle welding T-shaped baffle plate inside contracts cross section and I-steel in-core contracting cross section and is parallel to each other thus, and web and the I-shaped steel core section place of inside contracting of T section baffle plate insertion stopper slot leave certain gap.
Described I-shaped steel core by surrendering active section, cross section subcontract section, linkage section form, cross section subcontract place b correspondence retrains the stopper slot position of steel pipe outward, and longitudinal length should be greater than the longitudinal length of welding T-shaped baffle plate, consider the command displacement amount of tension, compressive deformation and this displacement-limited with dissipation system of design when comprising steel core surrender, require to specify that its ultimate range is poor according to the restriction of seismic design of structures specification Elastic And Plastic story drift.When anti-buckling support is stressed, first steel core consumes energy surrender, and when steel core yield deformation is subject to the internal baffle restriction of outer steel pipe, after outer steel pipe and surrender, steel core participates in stressed jointly.And outer steel pipe rigidity is comparatively large, after surrender, the rigidity of steel core effectively can limit the sidesway of the rear structural entity of steel core surrender in addition, reaches spacing effect.
Described outer constraint steel tube section form can be square, circular.
According to above technical scheme, compared with prior art the present invention has following characteristics and beneficial effect.
Superior performance: energy dissipation capacity of the present invention is the yield strength of steel core, displacement structure then by the rigidity of outer constraint steel pipe and the rigidity co-controlling of the rear steel core of surrender, takes full advantage of the axial rigidity of outer constraint steel pipe.
Draw materials conveniently: the steel wide material sources that the present invention adopts, complete in specifications, it is convenient to buy.
Power transmission is clear and definite: after steel core surrender, and the axial rigidity of outer constraint steel pipe is conducive to the storey sidesway of limiting structure as the additional stiffness of support system, realizes limit function.
The present invention can be widely used in the energy-dissipating and shock-absorbing of building and spacing control.
Accompanying drawing explanation
Fig. 1 is structure side view of the present invention, i.e. longitudinal sectional drawing.
Fig. 2 is that Figure 1A-A locates sectional drawing, i.e. A-A radial section figure.
Fig. 3 is that Figure 1B-B locates sectional drawing, i.e. B-B radial section figure.
Reference numeral: the outer confinement sleeve of 1-steel core, 2-, 3-light-gauge steel section concrete filled steel tube, 4-T shape baffle plate, establish the length of T-shaped baffle length, e-slot end portion distance steel tube end between 5-steel core and outer steel pipe in non-cohesive material, a-non-variable cross-section segment length, b-steel core section subcontract segment length, c-linkage section length, d-.
Detailed description of the invention
As shown in Figure 1, the anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind of, is made up of I-shaped power consumption steel core (1) and outer constraint steel pipe (2), outer steel pipe sizes 300 × 300mm.Described I-shaped power consumption steel core (1) comprises non-variable cross-section section a, cross section subcontract section b, linkage section c.Form 2 rectangular spaces between described I-shaped steel core (1) and outer constraint steel pipe (2) and place 2 light-gauge steel section concrete filled steel tubes (3).Described outer constraint steel pipe (2) is the square steel pipe of 2 flutings, and the outer diameter retraining steel pipe (2) is about 10mm slightly larger than steel core (1) non-variable cross-section section diameter, the gap between outer constraint steel pipe (2) and steel core (1) arranges non-cohesive material layer (5).Offer slotted eye apart from a pair opposite side steel plate end position of outer constraint steel pipe (2) 1/12 length e, another opposite side does not process.Slotting length d is the length of 1/6 outer constraint steel pipe, is also the length of welding double angle T-shaped baffle plate (4) simultaneously.Institute baffled (4) is welded by two angle steel, and T-shaped baffle plate inserts slotted eye by outside and is welded on outer steel pipe.The longitudinal two ends of T-shaped baffle plate of inserting slotted eye inside contract with the slope angle of 60 ° respectively, and the longitudinal cross-section of T-shaped baffle plate is trapezoidal thus.Described steel core (1) is internal withdraw type variable cross-section core, in arranging baffle plate (4) and sentence the slope angle subcontract cross section of 60 °, double angle welding T-shaped baffle plate inside contracts cross section and I-steel in-core contracting cross section and is parallel to each other thus, the length that I-shaped steel core cross-section radial inside contracts is about 30mm, and baffle plate penetrates slotted eye to the steel core section place of inside contracting and leaves the gap of about 5mm; The longitudinal length of I-shaped steel core section subcontract section should be greater than the longitudinal length of T-shaped baffle plate, consider the command displacement amount of tension, compressive deformation and this displacement-limited with dissipation system of design when comprising steel core (1) surrender, require to specify that its ultimate range is poor according to the restriction of seismic design of structures specification Elastic And Plastic story drift.When anti-buckling support is stressed, steel core (1) first consumes energy surrender, when steel core (1) yield deformation is subject to the internal baffle restriction of outer steel pipe (2), outer steel pipe (2) participates in stressed with the rear steel core (1) of surrender jointly.And outer steel pipe (2) rigidity is comparatively large, after surrender, the rigidity of steel core (1) effectively can limit the sidesway of the rear structural entity of steel core surrender in addition, reaches spacing effect.
Except above-mentioned example, the section form of steel core (1) can also be H-shaped cross section.
As shown in Figure 2, outer constraint steel pipe (2) is the square steel pipe of 2 flutings, and the outer length of side retraining steel pipe (2) is about 10mm slightly larger than steel core (1) non-variable cross-section section width, baffled place's subcontract steel core size in steel pipe, the gap between outer constraint steel pipe (2) and steel core (1) arranges non-cohesive material layer (5).
As shown in Figure 3, the length that I-shaped steel core cross-section radial inside contracts is about 30mm, baffle plate penetrates slotted eye and the steel core section place of inside contracting and leaves the gap of about 5mm, and the gap between outer constraint steel pipe (2) and steel core (1) arranges non-cohesive material layer (5).
The operating principle of the anti-buckling spacing energy-consumption supporting member of variable cross-section of the present invention is:
External loads is applied to anti-buckling support, and first steel core bears external load until surrender, distortion acquire a certain degree the constraint being subject to Internal baffle time, outer steel pipe participates in load-bearing.Under pressured state, when after steel core surrender, the compressive strain of steel core reaches the limit of Internal baffle, namely when steel core inwardly compresses the end touching internal baffle, outer obligatory point contributes axial compression resistance rigidity under the effect of steel core, as the overall sidesway of additional stiffness limiting structure.Under tension state, until when the stretcher strain of steel core surrender reaches the limit of Internal baffle, when namely steel core stretches out the end touching internal baffle, outer obligatory point contributes axial extensional rigidity under the effect of steel core, as the overall sidesway of additional stiffness limiting structure.Now steel core and outer obligatory point integrally bear external loads jointly.This duty shows the working in reciprocating mode in tension and compression process.
Claims (5)
1. the anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind, be made up of I-shaped steel core and outer constraint steel pipe, I-shaped steel core is positioned at outer constraint steel duct, two rectangle light-gauge steel section concrete filled steel tubes are filled in two rectangular region that outer constraint steel pipe and I-shaped steel core are formed, it is characterized in that, described I-shaped steel core therefrom between be followed successively by non-variable cross-section section a to two ends, reduced cross-sectional section b and linkage section c, non-variable cross-section section a is between the two sections section of reducing b, reduced cross-sectional section b is respectively near the two ends of outer constraint steel pipe, described outer constraint steel pipe is the square steel pipe that two sides has stopper slot, the corresponding I-shaped cross-section section of the reducing b of stopper slot, stopper slot place is welded with T section baffle plate, the edge of a wing of T section baffle plate is welded on the external surface of outer constraint steel pipe, web vertically inserts stopper slot, I-shaped steel core reduced cross-sectional section b reduces with 60 ° of slope angles, the web of T section baffle plate is parallel with the I-shaped steel core end of reduced cross-sectional section b, and namely baffle plate two ends have 60 ° of slope angles equally, the web longitudinal cross-section of T section baffle plate is trapezoidal, and leaves space with the I-shaped steel core section place of inside contracting.
2., according to the anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in the one of claim 1, it is characterized in that, the length of side of outer constraint steel pipe is slightly larger than I-shaped steel core non-variable cross-section section a width.
3. according to the anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in the one of claim 1, it is characterized in that, web and the I-shaped steel core section place of inside contracting of T section baffle plate insertion stopper slot leave certain gap, and the gap between outer constraint steel pipe, I-shaped steel core and rectangle light-gauge steel section concrete filled steel tube arranges non-cohesive material layer.
4. according to the anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in the one of claim 1, it is characterized in that, stopper slot is apart from outer constraint steel tube end part 1/12 length e place, slotting length d is the length of 1/6 outer constraint steel pipe, is also the length of T font double angle baffle plate simultaneously.
5., according to the anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in the one of claim 1, it is characterized in that, the section form of outer constraint steel pipe is square or circular.
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| CN201310745337.0A CN103711222B (en) | 2013-12-30 | 2013-12-30 | The anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind of |
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| CN201310745337.0A CN103711222B (en) | 2013-12-30 | 2013-12-30 | The anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind of |
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| CN103711222A CN103711222A (en) | 2014-04-09 |
| CN103711222B true CN103711222B (en) | 2016-04-20 |
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| CN201310745337.0A Expired - Fee Related CN103711222B (en) | 2013-12-30 | 2013-12-30 | The anti-buckling spacing energy-consumption supporting member of baffled formula steel pipe I-shaped internal withdraw type variable cross-section inner core in a kind of |
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| CN107165275B (en) * | 2017-06-19 | 2019-04-09 | 四川大学 | A kind of combined anti-seismic bolt connection node |
| CN107605064A (en) * | 2017-10-30 | 2018-01-19 | 南京百西思建筑科技有限公司 | A kind of anti-buckling support coupling beam of assembled X-shaped |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6826874B2 (en) * | 1999-06-30 | 2004-12-07 | Nippon Steel Corporation | Buckling restrained braces and damping steel structures |
| CN201172902Y (en) * | 2008-01-25 | 2008-12-31 | 北京工业大学 | Hinge connection anti-flexion support |
| CN101718123A (en) * | 2009-12-21 | 2010-06-02 | 清华大学 | E-shaped fastener constrained type assembled buckling-restrained energy-consumed brace |
| CN202007465U (en) * | 2010-12-30 | 2011-10-12 | 陈明中 | Novel supporting anti-seismic energy consumer |
| CN202064477U (en) * | 2010-12-30 | 2011-12-07 | 陈明中 | Novel supporting earthquake proof energy dissipator |
| CN102535664A (en) * | 2010-12-29 | 2012-07-04 | 上海赛弗工程减震技术有限公司 | Novel support seismic energy dissipator |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6826874B2 (en) * | 1999-06-30 | 2004-12-07 | Nippon Steel Corporation | Buckling restrained braces and damping steel structures |
| CN201172902Y (en) * | 2008-01-25 | 2008-12-31 | 北京工业大学 | Hinge connection anti-flexion support |
| CN101718123A (en) * | 2009-12-21 | 2010-06-02 | 清华大学 | E-shaped fastener constrained type assembled buckling-restrained energy-consumed brace |
| CN102535664A (en) * | 2010-12-29 | 2012-07-04 | 上海赛弗工程减震技术有限公司 | Novel support seismic energy dissipator |
| CN202007465U (en) * | 2010-12-30 | 2011-10-12 | 陈明中 | Novel supporting anti-seismic energy consumer |
| CN202064477U (en) * | 2010-12-30 | 2011-12-07 | 陈明中 | Novel supporting earthquake proof energy dissipator |
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