CN103726584A - Novel buckling restrained energy-dissipation limiting and bracing member with rectangular steel tube and steel core with T-shaped variable cross section in bolt assembling mode - Google Patents
Novel buckling restrained energy-dissipation limiting and bracing member with rectangular steel tube and steel core with T-shaped variable cross section in bolt assembling mode Download PDFInfo
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- CN103726584A CN103726584A CN201310745347.4A CN201310745347A CN103726584A CN 103726584 A CN103726584 A CN 103726584A CN 201310745347 A CN201310745347 A CN 201310745347A CN 103726584 A CN103726584 A CN 103726584A
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Abstract
The invention discloses a novel buckling restrained energy-dissipation limiting and bracing member with a rectangular steel tube and a steel core with the T-shaped variable cross section in a bolt assembling mode, and belongs to the technical field of buckling restrained energy-dissipation limiting and bracing. A connecting section a, cross section partial enlarging sections b and a buckling working section c are sequentially arranged on the steel core from the two ends to the middle. The buckling working section c is located between the two cross section partial enlarging sections b. Limiting grooves are formed in the positions, corresponding to three fins of the cross section partial enlarging sections b of the T-shaped steel core, of the outer restrained steel tube. The length of the limiting grooves is slightly larger than that of the cross section partial enlarging sections b. The three fins of the cross section partial enlarging sections b extend out of the outer restrained steel tube through the limiting grooves. The buckling working section c is connected with the cross section partial enlarging sections b in a gradient gradual change mode. The cross section partial enlarging sections b are connected with the connecting section a in a gradient gradual change mode. The whole rigidity limiting structure moves laterally jointly through steel core buckling energy dissipation in the early stage of buckling restrained bracing load-bearing, the rear-stage outer steel tube and the buckled steel core to achieve the limiting effect, and the novel buckling restrained energy-dissipation limiting and bracing member can be widely applied to the earthquake-reduction design of a 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 steel core is a variable cross-section T font, and outer constraint steel pipe is the curvature-prevention support component of square bolts assemblies formula.Load-bearing T font in early stage steel core surrender power consumption, after the later stage retrains steel pipe outward and surrenders, steel core provides axial rigidity limiting structure entirety sidesway jointly, reaches limit effect.
Background technology
Anti-buckling support (BRB) is a kind of supporting form that has common support and metal damper dual-use function concurrently, it mainly forms by supporting steel core, peripheral constraint component, and is conventionally provided with the dilatancy being produced when steel core pressurized is supported to discharge in non-cohesive material or suitable gap between the two.Buckling-restrained unit offers the enough constraints of core cell, and core cell is surrendered and flexing not 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 easily the support of damage.
Traditional curvature-prevention support component is consumed energy by steel core, peripheral constraint component only plays the effect of supporting and limit the outer flexing of steel core face, 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 pressurized flexing, prevent steel core plate pressurized unstability, make steel core plate 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, consider to utilize the research of the stiffness limits structural entity displacement of steel core and outer steel pipe to be necessary after steel core surrender, we can, on the basis of existing conventional anti-buckling support, complete this conception by certain improvement technological 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 font steel core variable cross-section anti-buckling energy-consumption limited support member is proposed, anti-buckling support load-bearing steel core in early stage surrender power consumption, after outer steel pipe of later stage and surrender, steel core provides stiffness limits structural entity sidesway jointly, reaches limit effect.The adjacent outer constraint steel pipe formation with bolts square-section of two ends outward, steel core adopts the design of welding T font variable cross-section, T shaped sections is local to be become large region and also leaves a fixing limit distance with the stopper slot tabling of outer constraint steel pipe, thus after steel core distortion surrender, utilize outer constraint steel pipe and surrender the axial rigidity of rear steel core 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 font variable cross-section steel core anti-buckling energy-consumption limited support member, comprise T font steel core and outer constraint steel pipe, T font steel core is positioned at outer constraint steel duct, in 2 rectangular region that outer constraint steel pipe and T font steel core form, fill 2 rectangle light-gauge steel section concrete filled steel tubes, it is characterized in that, described T font steel core is followed successively by linkage section a from both ends to the middle, local large section b and the surrender active section c of becoming in cross section, surrender active section c is between the large section of the local change of two sections b, the local large section b two ends of close outer constraint steel pipe respectively that become, cross section, outer constraint steel pipe offers stopper slot at local three the wing places that become large section b of corresponding T font steel core section, the length of stopper slot is a bit larger tham the local length that becomes large section b in cross section, local three wings that become large section b in cross section stretch out outside outer constraint steel pipe by stopper slot, surrender active section c and cross section are local to be become between large section b, local change between large section b and linkage section a all adopts gradient gradual change type to be connected in cross section.
Gradient gradual change type connects preferably: T font steel core section is sentenced the local increasing section of 60 ° of slope angles in outer steel pipe stopper slot, until cross section passes outer constraint steel pipe stopper slot.
Described outer constraint steel pipe is assembled by 4 steel plate bolts, the relative end of steel plate 135 ° of outwards and being connected by bolt with adjacent two steel plates respectively.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 large section, and the gap between outer constraint steel pipe and T Zee bar steel Z wicking surface and rectangle light-gauge steel section concrete filled steel tube arranges non-cohesive material.
3 adjacent side of described outer constraint steel pipe are opened stopper slot corresponding to the local section greatly that becomes of steel core end cross-sectional, slotting position is consistent with steel core variable cross-section region, the outer steel tube end part length d of distance is 1/12 of steel pipe total length, slotting length e is 1/6 of outer steel pipe total length, slotting length and steel core section become the range difference of big-length, the control displacement of this displacement-limited with dissipation system of tension, compressive deformation and design while considering to comprise the surrender of T font steel core, 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.
Filling thin-walled shaped steel concrete filled steel tube in 2 rectangular region that described outer constraint steel pipe and T font steel core form, to prevent T font steel core pressurized local buckling, can prevent the whole structure that concrete compression destroying infection supports simultaneously.
When anti-buckling support is stressed, steel core is energy consumption and distortion first, distortion acquires a certain degree and is subject to after the constraint of stopper slot, outer steel pipe is stressed together with steel core, and because outer steel pipe rigidity is larger, outer steel pipe can effectively limit steel core with the rear steel core rigidity sum of surrender and surrender the sidesway of rear structural entity, 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 font steel core, but steel core takes full advantage of the global displacement of the axial rigidity limiting structure of outer constraint steel pipe after surrendering;
Easy construction: outer constraint steel pipe of the present invention adopts bolt assembling, and site operation and factory-assembled can accomplish to reduce production costs, and expands range of application.
It is convenient to repair: outer constraint steel pipe of the present invention adopts bolts assemblies formula, is convenient to checking and support replacing after the shake of 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, 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, 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: 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, local large section, c-surrender active section, the length of d-stopper slot distance steel tube end, the e-stopper slot length of becoming in b-cross section outward.
The specific embodiment
As shown in Figure 1, a kind of Novel bolt assembling rectangular steel tube T font variable cross-section steel core anti-buckling energy-consumption limited support member.Comprise T font steel core (1) and outer constraint steel pipe (2), steel pipe sizes 300 × 300mm.Described steel core (1) comprises linkage section a, local large section b and the surrender active section c of becoming in cross section.The local increasing section of 60 ° of slope angles is sentenced in outer steel pipe stopper slot (3) in described steel core (1) cross section, until cross section passes the about 30mm of outer steel pipe stopper slot.Between described power consumption steel core (1) and outer constraint steel pipe (2), fill 2 rectangle light-gauge steel section concrete filled steel tubes (4).Described outer constraint steel pipe (2) is assembled by 4 steel plates, and steel plate end 50mm 135 ° of outwards of difference and adjacent two steel plates are connected by bolt (5).The width of outer constraint steel pipe is greater than the about 10mm of core surrender active section breadth of section, is less than the about 30mm of breadth of section of steel core section change general goal, and the gap between outer constraint steel pipe (2) and active section steel core (1) arranges non-cohesive material (6); (2) 3 adjacent side of described outer constraint steel pipe are opened stopper slot (3), and another side does not deal with.Slotting position is consistent with steel core variable cross-section region, the outer steel tube end part length d of distance is 1/12 of steel pipe length, slotting length e is 1/6 of outer steel pipe total length, slotting length and steel core section become the range difference of big-length, 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.
Steel core is except above-mentioned example, and the section form of steel core plate (2) can also be double angle T shaped sections.
As shown in Figure 2, adjacent two steel discs of outer constraint rectangular steel tube (1) are assembled and are formed by bolt (5), and bolt link position notes avoiding the position of steel pipe side stopper slot, can be arranged on place, four right angles.T font steel core (1) variable cross-section place passes the about 30mm of outer constraint steel pipe (2) by outer steel pipe stopper slot place.
As shown in Figure 3, anti-buckling support works section steel core (1) wraps in outer constraint steel pipe (2) inside, and the spacing that leaves 10mm between outer constraint steel pipe (2) and steel core (1), 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 of the present invention square-section steel pipe T font variable cross-section steel core anti-buckling energy-consumption limited support member is:
External loads is applied to anti-buckling support, and early stage, steel core bore external load until surrender, and stage is by outer steel pipe and rear its limit function of steel core common guarantee of surrender.Under pressured state, when the compressive strain after steel core surrender reaches the pressurized limit of stopper slot, be that steel core section becomes when the inside compression of section touches the end of stopper slot greatly, outer constraint steel pipe is contributed axial compression resistance rigidity, control structure global displacement under the effect of steel core.Under tension state, when the stretcher strain after steel core surrender reaches the tension limit of stopper slot, be that steel core section becomes when large section outwards stretching touches the end of stopper slot, outer constraint steel pipe is contributed axial extensional rigidity, control structure global displacement under the effect of steel core.Now steel core and outer constraint steel pipe are made the as a whole external loads of jointly bearing.This duty shows as in the working in reciprocating mode in tension and compression process.
Claims (6)
1. a Novel bolt assembling rectangular steel tube T font variable cross-section steel core anti-buckling energy-consumption limited support member, comprise T font steel core and outer constraint steel pipe, T font steel core is positioned at outer constraint steel duct, in 2 rectangular region that outer constraint steel pipe and T font steel core form, fill 2 rectangle light-gauge steel section concrete filled steel tubes, it is characterized in that, described T font steel core is followed successively by linkage section a from both ends to the middle, local large section b and the surrender active section c of becoming in cross section, surrender active section c is between the large section of the local change of two sections b, the local large section b two ends of close outer constraint steel pipe respectively that become, cross section, outer constraint steel pipe offers stopper slot at local three the wing places that become large section b of corresponding T font steel core section, the length e of stopper slot is a bit larger tham the local length that becomes large section b in cross section, local three wings that become large section b in cross section stretch out outside outer constraint steel pipe by stopper slot, surrender active section c and cross section are local to be become between large section b, local change between large section b and linkage section a all adopts gradient gradual change type to be connected in cross section.
2. according to a kind of Novel bolt assembling rectangular steel tube T font variable cross-section steel core anti-buckling energy-consumption limited support member of claim 1, it is characterized in that, gradient gradual change type connects preferably: T font steel core section is sentenced the local increasing section of 60 ° of slope angles in outer steel pipe stopper slot (3), until cross section passes outer constraint steel pipe stopper slot.
3. according to a kind of Novel bolt assembling rectangular steel tube T font variable cross-section steel core anti-buckling energy-consumption limited support member of claim 1, it is characterized in that, described outer constraint steel pipe is assembled by 4 steel plate bolts, the relative end position of steel plate 135 ° of outwards and being connected by bolt with adjacent two steel plates respectively.
4. according to a kind of Novel bolt assembling rectangular steel tube T font variable cross-section steel core anti-buckling energy-consumption limited support member 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 of steel core section change general goal.
5. according to a kind of Novel bolt assembling rectangular steel tube T font variable cross-section steel core anti-buckling energy-consumption limited support member of claim 1, it is characterized in that, the gap between outer constraint steel pipe, T Zee bar steel Z wicking surface and rectangle light-gauge steel section concrete filled steel tube arranges non-cohesive material.
6. according to a kind of Novel bolt assembling rectangular steel tube T font variable cross-section steel core anti-buckling energy-consumption limited support member of claim 1, it is characterized in that, stopper slot slotting position is consistent with three, steel core variable cross-section region wing, the length d of the outer steel tube end part of distance is 1/12 of steel pipe length, and 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 |
|---|---|---|---|
| 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 true CN103726584A (en) | 2014-04-16 |
| CN103726584B 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
- 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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