CN103726584B - A kind of Novel bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component - Google Patents
A kind of Novel bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component Download PDFInfo
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- CN103726584B CN103726584B CN201310745347.4A CN201310745347A CN103726584B CN 103726584 B CN103726584 B CN 103726584B CN 201310745347 A CN201310745347 A CN 201310745347A CN 103726584 B CN103726584 B CN 103726584B
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Abstract
A kind of Novel bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component, belongs to anti-buckling energy-consumption limited support technical field.Steel core is followed successively by linkage section a from both ends to the middle, local, cross section becomes large section b and surrender active section c, surrender active section c becomes between large section b in two sections local, three wing places that outer constraint steel pipe becomes large section b in the T-shaped steel core section local of correspondence offer stopper slot, the length of stopper slot is a bit larger tham the length that local, cross section becomes large section b, three wings that local, cross section becomes large section b stretch out outside outer constraint steel pipe by stopper slot, and surrender active section c becomes between large section b with local, cross section, local, cross section becomes between large section b with linkage section a and all adopts gradient gradual change type to be connected.Power consumption surrendered by anti-buckling support load-bearing steel core in early stage, and later stage outer steel pipe and the rear steel core of surrender provide rigidity limiting structure overall sidesway jointly, reach limit effect.This invention can be widely used in the Aseismatic Design of high-rise building.
Description
Technical field
The invention belongs to anti-buckling spacing energy-consumption supporting member technical field, relate to a kind of novel engineering structures energy dissipation and spacing supporting member, especially a kind of steel core is that variable cross-section is T-shaped, and outer constraint steel pipe is the curvature-prevention support component of square bolts assemblies formula.Load-bearing T-shaped steel core surrender in early stage power consumption, the later stage retrains steel pipe outward and after surrendering, steel core provides axial rigidity limiting structure overall sidesway jointly, reaches limit effect.
Background technology
Anti-buckling support (BRB) is a kind of supporting form having common support and metal damper dual-use function concurrently, it is primarily of support steel core, peripheral constraint component composition, and the dilatancy produced when being usually provided with non-cohesive material or suitable gap between the two discharge support steel core pressurized.Buckling-restrained unit is supplied to the enough constraints of core cell, core cell is surrendered and not flexing when pressurized.Buckling restrained brace has clear and definite surrender bearing capacity, can play the effect of " fuse " under large shake, for the protection of agent structure unyielding or not serious destruction under large shake, and after large shake, through verifying, can change the support of damage easily.
Traditional curvature-prevention support component is consumed energy by steel core, peripheral constraint component only plays and supports and limit the effect of steel core out-of-plane buckling, be characterized in that only steel core is connected with structural element, load is born by steel core completely, outer sleeve and packing material only retrain steel core plate and prevent its compressive buckling, namely prevent steel core plate buckle in compression, make steel core plate all can enter surrender in tension with by pressure.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, utilize the research of the rigidity limiting structure global displacement of steel core and outer steel pipe to be necessary after considering steel core surrender, we on the basis of existing conventional anti-buckling support, can complete this conception by certain improvement opportunity means.
Summary of the invention
The present invention makes full use of the rigidity of anti-buckling support peripheral constraint component, a kind of Novel bolt assembling rectangular steel tube T-shaped steel core variable cross-section anti-buckling energy-consumption limited support component is proposed, anti-buckling support load-bearing steel core in early stage surrender power consumption, later stage outer steel pipe and the rear steel core of surrender provide rigidity limiting structure overall sidesway jointly, reach limit effect.The adjacent outer constraint steel pipe formation square-section with bolts that two ends outwards bend, steel core adopts the T-shaped variable cross-section design of welding, local, T-shaped cross section becomes the stopper slot tabling of large regions and outer constraint steel pipe and leaves a fixing limit distance, thus after steel core distortion surrender, utilize the axial rigidity of outer constraint steel pipe and the rear steel core of surrender and limiting structure global displacement to reach spacing target.
For achieving the above object, the present invention adopts following technical scheme:
A kind of Novel bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component, comprise T-shaped steel core and outer constraint steel pipe, T-shaped steel core is positioned at outer constraint steel duct, 2 rectangle light-gauge steel section concrete filled steel tubes are filled in 2 rectangular region that outer constraint steel pipe and T-shaped steel core are formed, it is characterized in that, described T-shaped steel core is followed successively by linkage section a from both ends to the middle, local, cross section becomes large section b and surrender active section c, surrender active section c becomes between large section b in two sections local, local, cross section becomes large section b respectively near the two ends of outer constraint steel pipe, three wing places that outer constraint steel pipe becomes large section b in the T-shaped steel core section local of correspondence offer stopper slot, the length of stopper slot is a bit larger tham the length that local, cross section becomes large section b, three wings that local, cross section becomes large section b stretch out outside outer constraint steel pipe by stopper slot, surrender active section c and local, cross section become between large section b, local, cross section becomes between large section b with linkage section a and all adopts gradient gradual change type to be connected.
Gradient gradual change type connects preferably: T-shaped steel core section sentences 60 ° of slope angle local increasing sections, until cross section passes outer constraint steel pipe stopper slot in outer steel pipe stopper slot.
Described outer constraint steel pipe is assembled by 4 steel plate bolts, and the relative end of steel plate respectively bent outward is rolled over 135 ° and is connected by bolt with adjacent two steel plates.The width of outer constraint steel pipe is greater than steel core surrender active section breadth of section, and be less than the breadth of section that steel core section becomes large section, outer constraint steel pipe and the gap between T-shaped steel core surface and rectangle light-gauge steel section concrete filled steel tube arrange non-cohesive material.
Described outer constraint steel pipe 3 adjacent side correspond to steel core end cross-sectional, and locally becoming large section opens stopper slot, slotting position is consistent with steel core variable cross-section region, be 1/12 of steel pipe total length apart from outer steel tube end part length d, slotting length e is 1/6 of outer steel pipe total length, slotting length and steel core section become the range difference of large length, consider the command displacement amount of tension, compressive deformation and this displacement-limited with dissipation system of design when comprising the surrender of T-shaped steel core, require to specify that its ultimate range is poor according to the restriction of seismic design of structures specification Elastic And Plastic story drift.
Filling thin-walled shaped steel concrete filled steel tube in 2 rectangular region that described outer constraint steel pipe and T-shaped steel core are formed, to prevent T font steel core pressurized local buckling, the whole structure that simultaneously can prevent concrete compression destroying infection from supporting.
When anti-buckling support is stressed, steel core is energy consumption and distortion first, after the constraint that being out of shape acquires a certain degree is subject to stopper slot, outer steel pipe is stressed together with steel core, and because outer steel pipe rigidity is larger, outer steel pipe effectively can limit with the rear steel core rigidity sum of surrender the sidesway that rear structural entity surrendered by steel core, reaches spacing effect.This invention can be widely used in the Aseismatic Design of high-rise building.
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 energy dissipation capacity of T-shaped steel core, but the global displacement taking full advantage of the axial rigidity limiting structure of outer constraint steel pipe after steel core surrender;
Easy construction: outer constraint steel pipe of the present invention adopts bolt assembling, site operation and factory-assembled can accomplish to reduce cost of production, expand range of application.
It is convenient to repair: outer constraint steel pipe of the present invention adopts bolts assemblies formula, checks and support replacing after being convenient to the shake to supporting member.
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 axial tension or pressurized (1) surrender, and the axial rigidity of outer constraint steel pipe (2) 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.
Fig. 2 is that Figure 1A-A locates sectional drawing.
Fig. 3 is that Figure 1B-B locates sectional drawing.
Reference numeral: 1-core, 2-retrain steel pipe, 3-steel tube end part stopper slot, 4-light-gauge steel section concrete filled steel tube, 5-bolt, 6-non-cohesive material, a-linkage section outward, local, b-cross section becomes large section, c-surrenders active section, the length of d-stopper slot distance steel tube end, e-stopper slot length.
Detailed description of the invention
As shown in Figure 1, a kind of Novel bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component.Comprise T-shaped steel core (1) and outer constraint steel pipe (2), steel pipe sizes 300 × 300mm.Described steel core (1) comprises linkage section a, local, cross section becomes large section b and surrender active section c.60 ° of slope angle local increasing sections are sentenced, until cross section passes outer steel pipe stopper slot be about 30mm in outer steel pipe stopper slot (3) in described steel core (1) cross section.2 rectangle light-gauge steel section concrete filled steel tubes (4) are filled between described power consumption steel core (1) and outer constraint steel pipe (2).Described outer constraint steel pipe (2) is assembled by 4 steel plates, steel plate end 50mm respectively to outer bending 135 ° and adjacent two steel plates connected by bolt (5).The width of outer constraint steel pipe is greater than core surrender active section breadth of section and is about 10mm, and the breadth of section being less than steel core section change general goal is about 30mm, and the gap between outer constraint steel pipe (2) and active section steel core (1) arranges non-cohesive material (6); Described outer constraint steel pipe (2) 3 adjacent side open stopper slot (3), and another side does not deal with.Slotting position is consistent with steel core variable cross-section region, be 1/12 of steel pipe length apart from outer steel tube end part length d, slotting length e is 1/6 of outer steel pipe total length, slotting length and steel core section become the range difference of large length, 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.
Steel core is except above-mentioned example, and the section form of steel core plate (2) can also be the T-shaped cross section of double angle.
As shown in Figure 2, the adjacent two panels steel disc of outer constraint rectangular steel tube (1) is assembled by bolt (5) and forms, and bolt link position notes the position avoiding steel pipe side stopper slot, can be arranged on four right angle.T font steel core (1) variable cross-section place passes outer constraint steel pipe (2) about 30mm by outer steel pipe stopper slot.
As shown in Figure 3, it is inner that anti-buckling support works section steel core (1) wraps in outer constraint steel pipe (2), and retraining the spacing leaving 10mm between steel pipe (2) and steel core (1) outward, the thickness of non-cohesive material (6) is consistent with the spacing between outer constraint steel pipe (2) and steel core (1).
The operating principle of a kind of Novel bolt assembling square-section steel pipe of the present invention T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component is:
External loads is applied to anti-buckling support, and early stage, steel core bore external load until surrender, and stage is by its limit function of steel core common guarantee after outer steel pipe and surrender.Under pressured state, when the compressive strain after steel core surrender reaches the pressurized limit of stopper slot, namely, when the inside compression that steel core section becomes large section touches the end of stopper slot, outer constraint steel pipe contributes axial compression resistance rigidity under the effect of steel core, control structure global displacement.Under tension state, when the stretcher strain after steel core surrender reaches the tension limit of stopper slot, namely steel core section becomes large section when stretching out the end touching stopper slot, and outer constraint steel pipe contributes axial extensional rigidity under the effect of steel core, control structure global displacement.Now steel core and outer constraint steel pipe integrally bear external loads jointly.This duty shows as in the working in reciprocating mode in tension and compression process.
Claims (6)
1. a bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component, comprise T-shaped steel core and outer constraint steel pipe, T-shaped steel core is positioned at outer constraint steel duct, 2 rectangle light-gauge steel section concrete filled steel tubes are filled in 2 rectangular region that outer constraint steel pipe and T-shaped steel core are formed, it is characterized in that, described T-shaped steel core is followed successively by linkage section a from both ends to the middle, local, cross section becomes large section b and surrender active section c, surrender active section c becomes between large section b in two sections local, local, cross section becomes large section b respectively near the two ends of outer constraint steel pipe, three wing places that outer constraint steel pipe becomes large section b in the T-shaped steel core section local of correspondence offer stopper slot, the length e of stopper slot is a bit larger tham the length that local, cross section becomes large section b, three wings that local, cross section becomes large section b stretch out outside outer constraint steel pipe by stopper slot, surrender active section c and local, cross section become between large section b, local, cross section becomes between large section b with linkage section a and all adopts gradient gradual change type to be connected.
2. according to a kind of bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component of claim 1, it is characterized in that, gradient gradual change type connects preferably: T-shaped steel core section sentences 60 ° of slope angle local increasing sections, until cross section passes outer constraint steel pipe stopper slot in outer steel pipe stopper slot (3).
3. according to a kind of bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component of claim 1, it is characterized in that, described outer constraint steel pipe is assembled by 4 steel plate bolts, and the relative end position of steel plate is respectively to outer bending 135 ° and be connected by bolt with adjacent two steel plates.
4. according to a kind of bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component of claim 1, it is characterized in that, the width of outer constraint steel pipe is greater than steel core surrender active section breadth of section, is less than the breadth of section that steel core section becomes general goal.
5. according to a kind of bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component of claim 1, it is characterized in that, the gap between outer constraint steel pipe, T-shaped steel core surface and rectangle light-gauge steel section concrete filled steel tube arranges non-cohesive material.
6. according to a kind of bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component of claim 1, it is characterized in that, stopper slot slotting position is consistent with three, steel core variable cross-section region wing, be 1/12 of steel pipe length apart from the length d of outer steel tube end part, slotting length e is 1/6 of outer steel pipe total length.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745347.4A CN103726584B (en) | 2013-12-30 | 2013-12-30 | A kind of Novel bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310745347.4A CN103726584B (en) | 2013-12-30 | 2013-12-30 | A kind of Novel bolt assembling rectangular steel tube T-shaped variable-cross-sectisteel steel core anti-buckling energy-consumption limited support component |
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| CN103726584A CN103726584A (en) | 2014-04-16 |
| CN103726584B true CN103726584B (en) | 2016-01-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004108030A (en) * | 2002-09-19 | 2004-04-08 | Tatsumi:Kk | Connecting metal fitting for timber |
| 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 CN201310745347.4A patent/CN103726584B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004108030A (en) * | 2002-09-19 | 2004-04-08 | Tatsumi:Kk | Connecting metal fitting for timber |
| 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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