CN103726583A - Buckling restrained energy-dissipation limiting bracing component with baffle-internally-arranged steel pipe and line-shaped retracting cross-section-variable inner core - Google Patents
Buckling restrained energy-dissipation limiting bracing component with baffle-internally-arranged steel pipe and line-shaped retracting cross-section-variable inner core Download PDFInfo
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Abstract
The invention discloses a buckling restrained energy-dissipation limiting bracing component with a baffle-internally-arranged steel pipe and a line-shaped retracting cross-section-variable inner core, and belongs to the technical field of buckling restrained energy-dissipation limiting bracing components. Two rectangular areas formed by the outer restraining steel pipe and the line-shaped steel core are filled with two rectangular hollow steel section concrete-filled steel tubes. The steel core comprises a cross-section-invariable section a, cross-section-reduction sections b and connection sections c from the middle to the two ends, limiting grooves correspond to the cross-section-reduction sections b of the steel core, T-shaped-cross-section baffles are welded to the positions of the limiting grooves, the positions, where the baffles are arranged, of the steel core are partially reduced at the slope angles of 60 degrees, certain gaps are reserved between webs, inserted into the limiting grooves, of the T-shaped-cross-section baffles and the cross-section retracted positions of the line-shaped steel core, and binding-free material layers are arranged in gaps among the outer restraining steel pipe, the line-shaped steel core and the rectangular hollow steel section concrete-filled steel tubes. The longitudinal lengths b of the cross-section partial reduction sections d of the line-shaped steel core should be larger than the longitudinal lengths of the welded T-shaped-cross-section baffles. The buckling restrained energy-dissipation limiting bracing component can be widely applied to energy-dissipation shock absorption and limiting control over a building.
Description
Technical field
The invention belongs to anti-buckling energy-consumption limited support component technology field, relate to a kind of engineering structures energy dissipation and spacing supporting member, especially a kind of steel core is variable cross-section in-line, the curvature-prevention support component that outer constraint steel pipe is interior baffled formula.When anti-buckling support is stressed, first the steel core of subcontract size surrenders power consumption, is out of shape the steel core that acquires a certain degree and is retrained by the built-in baffle plate of outer steel pipe, drives thus outer steel pipe to participate in the spacing work in later stage.
Background technology
Buckling restrained brace claims again anti-buckling support or BRB (Buckling restrained brace), product technology develops the earliest in the Japan of 1973, a collection of Japanese scholars at that time been has successfully has been researched and developed wall board type buckling-restrained energy-dissipation the earliest, and it has been carried out adding the tension and compression test of different non-cohesive materials; After 1994 Nian Bei ridge earthquakes, the U.S. also starts to carry out the test of corresponding design studies and vast scale to putting buckling support system, binding isotherm computational analysis simultaneously this support system compared with the advantage of other support systems.Anti-buckling support by supporting steel core, peripheral constraint component forms, and can be framework or bent structure very large anti-side rigidity and bearing capacity is provided, and adopts the structural system supporting in building structure, to apply very extensive.Conventionally be provided with the dilatancy being produced when steel core pressurized is supported to discharge in non-cohesive material or suitable gap between the two.Outer sleeve and packing material only retrain steel core pressurized flexing, make steel core in tension and depressed all can enter surrender, thereby the Hysteresis Behavior that anti-buckling constraint is supported are good.
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 pressurized flexing, prevent steel core pressurized unstability, make steel core in tension and depressed all can enter surrender.Only consider power consumption core of steel core, ignored the axial rigidity contribution of outer constraint sleeve.The anti-buckling support of research and development at present mainly improves emphatically its energy dissipation capacity, less to the position-limiting action research of anti-buckling support.Given this, we will put forth effort to propose a kind of novel anti-buckling support that steel core rigidity after outer steel pipe rigidity and surrender is carried out displacement structure control of applying.
Summary of the invention
The present invention proposes the anti-buckling spacing energy-consumption supporting member of a kind of in-line variable cross-section steel core, solve the problem that existing anti-buckling support does not have displacement control device.Baffled rectangular steel tube in outer constraint steel pipe adopts, steel core adopts the T shape baffle plate tabling at the stopper slot place of the design of in-line variable cross-section and outer constraint steel pipe, thus outside utilizing after steel core surrender, the axial rigidity of constraint steel pipe reaches spacing target.
For achieving the above object, the present invention adopts following technical scheme:
Baffled formula in-line internal withdraw type variable cross-section inner core anti-buckling energy-consumption limited support member in a kind of steel pipe, by in-line steel core and outer constraint steel pipe, formed, in-line steel core is positioned at outer constraint steel duct, in two rectangular region that outer constraint steel pipe and in-line steel core form, fill two rectangle light-gauge steel section concrete filled steel tubes, it is characterized in that, described in-line steel core is followed successively by non-variable cross-section section a from centre 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 dwindling b, reduced cross-sectional section b is the two ends of close outer constraint steel pipe respectively.Described outer constraint steel pipe is the square steel pipe that opposite side 2 faces have stopper slot, the reduced cross-sectional section b of the corresponding in-line steel core of stopper slot, stopper slot place is welded with T section baffle plate, and the edge of a wing of T section baffle plate is welded on outer constraint steel pipe stopper slot place external surface, and web vertically inserts stopper slot.
The length of side of described outer constraint steel pipe is slightly larger than the non-variable cross-section section of in-line steel core width, and the gap between outer constraint steel pipe, in-line steel core and rectangle light-gauge steel section concrete filled steel tube arranges non-cohesive material layer.The outer constraint steel tube end part length e of stopper slot distance is 1/12 of outer steel pipe total length, and slotting length d is the length of 1/6 outer constraint steel pipe, is also the length of welding double angle T shape baffle plate simultaneously.Described steel core is internal withdraw type variable cross-section steel core, and in the slope angle subcontract cross section that baffle plate is set sentences 60 °, the longitudinal cross-section of T section is trapezoidal thus.T shape double angle baffle plate inside contracts cross section and in-line steel core and inside contracts cross section and be parallel to each other, and web and the in-line steel core section place of inside contracting that T section baffle plate inserts stopper slot leave a fixed gap; The longitudinal length b of in-line steel core section subcontract section should be greater than the longitudinal length d of welding T steel plate, the control displacement of this displacement-limited with dissipation system of tension, compressive deformation and design while considering to comprise steel core surrender, requires to stipulate that its ultimate range is poor according to the restriction at seismic design of structures standard Elastic And Plastic relative storey displacement angle.
When described linkage section is physically connected to member, can weld as required put more energy into floor or angle steel increase linkage section intensity, guarantee linkage section steel core two-way stable.
The section form of described outer constraint steel pipe can be square-section, can be also circular cross-section.
When anti-buckling support is stressed, the steel core surrender of first consuming energy, when steel core yield deformation is subject to the internal baffle restriction of outer steel pipe, after outer steel pipe and surrender steel core common participate in stressed.And outer steel pipe rigidity is larger, after surrender, the rigidity of steel core can effectively limit the sidesway that steel core is surrendered rear structural entity in addition, reaches spacing effect.
According to above technical scheme, compared with prior art the present invention has following characteristics and beneficial effect.
Superior performance: the yield strength that energy dissipation capacity of the present invention is steel core, after steel core surrender by interior baffled with make outer steel pipe participation stressed being connected of the steel core section of inside contracting, thereby displacement structure, 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, the axial rigidity of outer constraint steel pipe is conducive to the storey sidesway of limiting structure as the additional stiffness of support system, realize limit function.
The present invention can be widely used in energy-dissipating and shock-absorbing and the spacing control of building.
Accompanying drawing explanation
Fig. 1 is structure side view of the present invention.
Fig. 2 is Figure 1A-A place sectional drawing.
Fig. 3 is Figure 1B-B place sectional drawing.
Reference numeral: the length of establishing T font baffle length, e-slotted eye end distance steel tube end in non-cohesive material, a-surrender active section length, b-steel core section subcontract segment length, c-linkage section length, d-between 1-steel core, the outer confinement sleeve of 2-, 3-light-gauge steel section concrete filled steel tube, 4-T font steel plate, 5-steel core and outer steel pipe.
The specific embodiment
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following examples, with claims, is as the criterion.
As shown in Figure 1, the anti-buckling spacing energy-consumption supporting member of baffled formula in-line internal withdraw type variable cross-section steel core in a kind of steel pipe, consists of outer constraint steel tube section 300 * 300mm in-line steel core (1) and outer constraint steel pipe (2).Described in-line power consumption steel core (1) comprises non-variable cross-section section a, cross section subcontract section b, linkage section c.Between described in-line power consumption steel core (1) and outer constraint steel pipe (2), form 2 rectangular spaces and place 2 rectangle light-gauge steel section concrete filled steel tubes (3).Described outer constraint steel pipe (2) is a pair of opposite side square steel pipe that another opposite side do not process of slotting, and the slightly larger in diameter of outer constraint steel pipe (2) is in the about 10mm of the non-variable cross-section section of steel core (1) b width, and the gap between outer constraint steel pipe (2), cross steel core (1) and concrete filled steel tube (3) arranges non-cohesive material layer (5).The end position of outer constraint steel pipe (2) the 1/12 length e of distance is offered stopper slot, and slotting length d is the length of 1/6 outer constraint steel pipe, is also the length of welding double angle T shape baffle plate (4) simultaneously.Set welding double angle T shape baffle plate (4) web inserts slotted eye by stopper slot outside and the edge of a wing is welded on outer steel pipe.The longitudinal two ends of T section baffle plate of inserting slotted eye inside contract with the slope angle of 60 ° respectively, and the longitudinal cross-section of T section is trapezoidal thus.Described steel core (1) is internal withdraw type variable cross-section steel core, in being set, baffle plate (4) locates two ends with the slope angle subcontract cross section of 60 °, welding thus double angle T shape baffle plate inside contracts cross section and in-line steel core and inside contracts cross section and be parallel to each other, the length that in-line steel core section radially 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 in-line steel core section subcontract section should be greater than the longitudinal length of welding T shape baffle plate, the control displacement of this displacement-limited with dissipation system of tension, compressive deformation and design while considering to comprise steel core (1) surrender, requires to stipulate that its ultimate range is poor according to the restriction at seismic design of structures standard Elastic And Plastic relative storey displacement angle.When anti-buckling support is stressed, steel core (1) surrender of first consuming energy, when steel core (1) yield deformation is subject to the internal baffle restriction of outer steel pipe (2), after outer steel pipe (2) and surrender, steel core (1) participates in stressed jointly.And outer steel pipe (2) rigidity is larger, after surrender, the rigidity of steel core (1) can effectively limit the sidesway that steel core is surrendered rear structural entity in addition, reaches spacing effect.
As shown in Figure 2, outer constraint steel pipe (2) is the square steel pipe of 2 flutings of opposite side, the length of side of outer constraint steel pipe (2) is slightly larger than the non-variable cross-section section of steel core (1) width 10mm, and the gap between outer constraint steel pipe (2) and in-line steel core (1) arranges non-cohesive material layer (5).
As shown in Figure 3, the length that in-line steel core section radially 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 operating principle of the anti-buckling spacing energy-consumption supporting member of in-line variable cross-section steel core of the present invention is:
External loads is applied to anti-buckling support, and first steel core (1) bears external load until surrender is out of shape and is acquired a certain degree while being subject to the constraint of Internal baffle (4), and outer steel pipe (2) participates in load-bearing.Under pressured state, when after steel core (1) surrender, the compressive strain of steel core reaches the limit of Internal baffle (4), be that steel core (1) inwardly compresses while touching the end of internal baffle (4), outer obligatory point (2) is contributed axial compression resistance rigidity under the effect of steel core (1), as the whole sidesway of additional stiffness limiting structure.Under tension state, until the stretcher strain of steel core (1) surrender is while reaching the limit of Internal baffle (4), be that steel core (1) outwards stretches while touching the end of internal baffle (4), outer obligatory point (2) is contributed axial extensional rigidity under the effect of steel core (1), as the whole sidesway of additional stiffness limiting structure.Now steel core (1) and outer obligatory point (2) are made the as a whole external loads of jointly bearing.This duty shows the working in reciprocating mode in tension and compression process.
Claims (6)
1. baffled formula in-line internal withdraw type variable cross-section inner core anti-buckling energy-consumption limited support member in a steel pipe, by in-line steel core and outer constraint steel pipe, formed, in-line steel core is positioned at outer constraint steel duct, in two rectangular region that outer constraint steel pipe and in-line steel core form, fill two rectangle light-gauge steel section concrete filled steel tubes, it is characterized in that, described in-line steel core is followed successively by non-variable cross-section section a from centre 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 dwindling b, reduced cross-sectional section b is the two ends of close outer constraint steel pipe respectively.Described outer constraint steel pipe is the square steel pipe that 2 faces have stopper slot, the corresponding in-line steel core section of the stopper slot section of dwindling b, 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, the in-line steel core section section of dwindling b two ends dwindle with 60 ° of slope angles, the T section baffle plate insertion web of stopper slot and the reduced cross-sectional section b of in-line steel core are parallel, be that 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 in-line steel core section place of inside contracting.
2. according to the anti-buckling spacing energy-consumption supporting member of baffled formula in-line internal withdraw type variable cross-section inner core in a kind of steel pipe of claim 1, it is characterized in that, the length of side of outer constraint steel pipe is greater than the non-variable cross-section section of in-line steel core width.
3. according to the anti-buckling spacing energy-consumption supporting member of baffled formula in-line internal withdraw type variable cross-section inner core in a kind of steel pipe of claim 1, it is characterized in that, the gap between outer constraint steel pipe, in-line 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 in-line internal withdraw type variable cross-section inner core in a kind of steel pipe of claim 1, it is characterized in that, stopper slot is positioned at the e place of outer constraint steel tube end part 1/12 length of distance, slotting length d is the length of 1/6 outer constraint steel pipe, is also the length of welding double angle T shape baffle plate simultaneously.
5. according to the anti-buckling spacing energy-consumption supporting member of baffled formula in-line internal withdraw type variable cross-section inner core in a kind of steel pipe of claim 1, it is characterized in that, the form of outer constraint steel pipe, except square-section, can also be circular cross-section.
6. by the anti-buckling spacing energy-consumption supporting member of baffled formula in-line internal withdraw type variable cross-section inner core in a kind of steel pipe of claim 1, it is characterized in that, when linkage section is physically connected to member, can weld as required put more energy into floor or angle steel increase linkage section intensity, guarantee linkage section steel core two-way stable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745136.0A CN103726583B (en) | 2013-12-30 | 2013-12-30 | Baffled formula in-line internal withdraw type variable cross-section inner core anti-buckling energy-consumption limited support member in a kind of steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745136.0A CN103726583B (en) | 2013-12-30 | 2013-12-30 | Baffled formula in-line internal withdraw type variable cross-section inner core anti-buckling energy-consumption limited support member in a kind of steel pipe |
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| CN103726583A true CN103726583A (en) | 2014-04-16 |
| CN103726583B CN103726583B (en) | 2016-05-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105484381A (en) * | 2015-12-30 | 2016-04-13 | 浙江建科减震科技有限公司 | Plate type metal damper constrained by steel-concrete combined plates |
| CN107299641A (en) * | 2017-06-02 | 2017-10-27 | 中国建筑股份有限公司 | A kind of assembled heel join node and its construction method |
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| CN201526099U (en) * | 2009-10-23 | 2010-07-14 | 广州大学 | Triple circular steel tube buckling-restrained anti-seismic support |
| CN102261140A (en) * | 2011-05-23 | 2011-11-30 | 株洲时代新材料科技股份有限公司 | Segmental energy-consumption buckling-restrained brace method and device |
| CN102817422A (en) * | 2012-08-31 | 2012-12-12 | 清华大学 | Prestressed concrete constraining buckling-restrained brace |
| CN102912886A (en) * | 2012-11-07 | 2013-02-06 | 沈阳建筑大学 | Combination constraint anti-buckling energy dissipation support |
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- 2013-12-30 CN CN201310745136.0A patent/CN103726583B/en not_active Expired - Fee Related
Patent Citations (5)
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| WO2010047461A1 (en) * | 2008-10-20 | 2010-04-29 | (주)크로스구조연구소기술사사무소 | Steel-concrete composite beam and construction method using same |
| CN201526099U (en) * | 2009-10-23 | 2010-07-14 | 广州大学 | Triple circular steel tube buckling-restrained anti-seismic support |
| CN102261140A (en) * | 2011-05-23 | 2011-11-30 | 株洲时代新材料科技股份有限公司 | Segmental energy-consumption buckling-restrained brace method and device |
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| CN102912886A (en) * | 2012-11-07 | 2013-02-06 | 沈阳建筑大学 | Combination constraint anti-buckling energy dissipation support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105484381A (en) * | 2015-12-30 | 2016-04-13 | 浙江建科减震科技有限公司 | Plate type metal damper constrained by steel-concrete combined plates |
| CN107299641A (en) * | 2017-06-02 | 2017-10-27 | 中国建筑股份有限公司 | A kind of assembled heel join node and its construction method |
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| CN103726583B (en) | 2016-05-18 |
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