CN103711222A - Bending-prevention limiting energy-dissipation supporting component with steel pipe with baffles inside and I-shaped inward contracting type variable-section inner core - Google Patents
Bending-prevention limiting energy-dissipation supporting component with steel pipe with baffles inside and I-shaped inward contracting type variable-section inner core Download PDFInfo
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- CN103711222A CN103711222A CN201310745337.0A CN201310745337A CN103711222A CN 103711222 A CN103711222 A CN 103711222A CN 201310745337 A CN201310745337 A CN 201310745337A CN 103711222 A CN103711222 A CN 103711222A
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Abstract
The invention discloses a bending-prevention limiting energy-dissipation supporting component with a steel pipe with baffles inside and an I-shaped inward contracting type variable-section inner core, and belongs to the technical field of bending-prevention limiting energy-dissipation supporting components. The I-shaped steel core sequentially includes a non-variable-section section a, section-decreasing sections b and a connecting section c from the two ends to the middle, wherein the section-decreasing sections b are respectively near the two ends of the external limiting steel pipe, limiting grooves correspond to the section-decreasing sections b, a T-shaped-section baffle is welded to each limiting groove, the section-decreasing sections b of the I-shaped steel core contract inwards at the rope angle of 60 degrees, the T-shaped-section baffles are inserted into limiting groove web plates and are parallel with a cross steel core of each section-decreasing section, and intervals are reserved in the web plates of the T-shaped-section baffles and the section inward contracting position of the I-shaped steel core. When the bending-prevention limiting energy-dissipation supporting component is stressed, the steel core dissipates energy and yields firstly, when yielding deformation of the steel core is limited by the baffles arranged inside the outer steel pipe, the outer steel pipe and the yielded steel core are jointly stressed, the rigidity of the outer steel pipe is large, the rigidity of the yielded steel core can effectively limit overall lateral movement of the structure formed after the steel core yields, and the limiting effect is achieved.
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, especially a kind of steel core is the buckling-restrained energy-dissipation member that I-shaped, the outer confinement sleeve of variable cross-section 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 variable cross-section, 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 stopper slot tabling of variable cross-section design 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:
The anti-buckling spacing energy-consumption supporting member of the I-shaped internal withdraw type variable cross-section of a kind of interior baffled formula steel pipe inner core, by I-shaped steel core and outer constraint steel pipe, formed, I-shaped steel core is positioned at outer constraint steel duct, in two rectangular region that outer constraint steel pipe and I-shaped steel core form, fill two rectangle light-gauge steel section concrete filled steel tubes, 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 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 reduced cross-sectional section of stopper slot 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, I-shaped steel core reduced cross-sectional section b two ends dwindle with 60 ° of slope angles, T section baffle plate inserts the web of stopper slot and the I-shaped steel core end parts parallel of reduced cross-sectional section, there are equally 60 ° of slope angles.The axial cross section that T section baffle plate inserts stopper slot web is trapezoidal, and leaves space with the place of inside contracting, I-shaped steel core cross section.
The length of side of described outer constraint steel pipe is greater than the non-variable cross-section section of I-shaped steel core 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 distance 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 shape double angle baffle plate simultaneously.Set welding double angle T shape baffle plate is inserted slotted eye and is welded on outer steel pipe by stopper slot outside.Longitudinal two ends of inserting the T shape baffle plate web of slotted eye dwindle with the slope angle of 60 ° respectively, and the longitudinal cross-section of T shape baffle plate is trapezoidal thus.Described core is internal withdraw type variable cross-section core, in the slope angle subcontract cross section that baffle plate is set sentences 60 °, double angle welding T shape baffle plate inside contracts cross section with I-steel in-core contracting cross section is parallel to each other thus, and web and the place of inside contracting, I-shaped steel core cross section of T section baffle plate insertion stopper slot leave certain gap.
Described I-shaped steel core forms by surrendering active section, cross section subcontract section, linkage section, 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 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 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, 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.
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: the yield strength that energy dissipation capacity of the present invention is steel core, 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, i.e. longitudinal sectional drawing.
Fig. 2 is Figure 1A-A place sectional drawing, i.e. A-A radial section figure.
Fig. 3 is Figure 1B-B place sectional drawing, i.e. B-B radial section figure.
Reference numeral: the length of establishing T font baffle length, e-slotted eye end distance steel tube end in non-cohesive material, the non-variable cross-section segment length of a-, 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 shape baffle plate, 5-steel core and outer steel pipe.
The specific embodiment
As shown in Figure 1, the anti-buckling spacing energy-consumption supporting member of the I-shaped internal withdraw type variable cross-section of a kind of interior baffled formula steel pipe inner core, consists of outer steel pipe sizes 300 * 300mm I-shaped power consumption steel core (1) and outer constraint steel pipe (2).Described I-shaped power consumption steel core (1) comprises non-variable cross-section section a, cross section subcontract section b, linkage section c.Between described I-shaped steel core (1) and outer constraint steel pipe (2), form 2 rectangular spaces 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 slightly larger in diameter that retrains steel pipe (2) is outward in the non-variable cross-section section of core (1) diameter 10mm, and the gap between outer constraint steel pipe (2) and core (1) arranges non-cohesive material layer (5).The a pair of opposite side steel plate end position of outer constraint steel pipe (2) the 1/12 length e of distance is offered slotted eye, and 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 shape baffle plate (4) simultaneously.Institute baffled (4) is welded by two angle steel, and T shape baffle plate is inserted slotted eye and is welded on outer steel pipe by outside.The longitudinal two ends of T shape baffle plate of inserting slotted eye inside contract with the slope angle of 60 ° respectively, and the longitudinal cross-section of T shape baffle plate is trapezoidal thus.Described core (1) is internal withdraw type variable cross-section core, in the slope angle subcontract cross section that baffle plate (4) is set sentences 60 °, double angle welding T shape baffle plate inside contracts cross section and I-steel in-core contracting cross section 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 cross section subcontract section should be greater than the longitudinal length of 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.
Except above-mentioned example, the section form of steel core (1) can also be H tee section.
As shown in Figure 2, outer constraint steel pipe (2) is the square steel pipe of 2 flutings, and the length of side of outer constraint steel pipe (2) is slightly larger than the about 10mm of 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, and 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 is out of shape and is acquired a certain degree while being subject to the constraint of Internal baffle, and 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, be that steel core inwardly compresses while touching the end of internal baffle, outer obligatory point is contributed axial compression resistance rigidity under the effect of steel core, as the whole sidesway of additional stiffness limiting structure.Under tension state, until the stretcher strain of steel core surrender is while reaching the limit of Internal baffle, steel core outwards stretches while touching the end of internal baffle, and outer obligatory point is contributed axial extensional rigidity under the effect of steel core, as the whole sidesway of additional stiffness limiting structure.Now steel core and outer obligatory point 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 (5)
1. the anti-buckling spacing energy-consumption supporting member of the I-shaped internal withdraw type variable cross-section of baffled formula steel pipe inner core in a kind, by I-shaped steel core and outer constraint steel pipe, formed, I-shaped steel core is positioned at outer constraint steel duct, in two rectangular region that outer constraint steel pipe and I-shaped steel core form, fill two rectangle light-gauge steel section concrete filled steel tubes, it is characterized in that, described I-shaped steel core is followed successively by non-variable cross-section section a between therefrom 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 I-shaped cross-section section of the dwindling 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 dwindles with 60 ° of slope angles, the I-shaped steel core end parts parallel of the web of T section baffle plate and reduced cross-sectional section, 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 place of inside contracting, I-shaped steel core cross section.
2. according to the anti-buckling spacing energy-consumption supporting member of the I-shaped internal withdraw type variable cross-section of a kind of interior baffled formula steel pipe inner core of claim 1, it is characterized in that, the length of side of outer constraint steel pipe is slightly larger than the non-variable cross-section section of I-shaped steel core width.
3. according to the anti-buckling spacing energy-consumption supporting member of the I-shaped internal withdraw type variable cross-section of a kind of interior baffled formula steel pipe inner core of claim 1, it is characterized in that, web and the place of inside contracting, I-shaped steel core cross section that T section baffle plate inserts 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 the I-shaped internal withdraw type variable cross-section of a kind of interior baffled formula steel pipe inner core of claim 1, it is characterized in that, stopper slot distance 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 the I-shaped internal withdraw type variable cross-section of a kind of interior baffled formula steel pipe inner core of claim 1, it is characterized in that, the section form of outer steel pipe can be square, 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 true CN103711222A (en) | 2014-04-09 |
| CN103711222B CN103711222B (en) | 2016-04-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165275A (en) * | 2017-06-19 | 2017-09-15 | 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 |
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| 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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2013
- 2013-12-30 CN CN201310745337.0A patent/CN103711222B/en not_active Expired - Fee Related
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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165275A (en) * | 2017-06-19 | 2017-09-15 | 四川大学 | A kind of combined anti-seismic bolt connection node |
| 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 |
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| CN103711222B (en) | 2016-04-20 |
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