CN102080420B - Multi-yield point fracture-free buckling-proof brace and method - Google Patents
Multi-yield point fracture-free buckling-proof brace and method Download PDFInfo
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- CN102080420B CN102080420B CN 201010570071 CN201010570071A CN102080420B CN 102080420 B CN102080420 B CN 102080420B CN 201010570071 CN201010570071 CN 201010570071 CN 201010570071 A CN201010570071 A CN 201010570071A CN 102080420 B CN102080420 B CN 102080420B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 108
- 229910052742 iron Inorganic materials 0.000 claims description 54
- 238000013467 fragmentation Methods 0.000 claims description 16
- 238000006062 fragmentation reaction Methods 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000013508 migration Methods 0.000 abstract 1
- 230000005012 migration Effects 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000000452 restraining effect Effects 0.000 abstract 1
- 208000012788 shakes Diseases 0.000 description 34
- 230000000694 effects Effects 0.000 description 8
- 238000005457 optimization Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000002968 anti-fracture Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a multi-yield point fracture-free buckling-proof brace and a bracing method. The brace comprises a primary yielding unit, a secondary yielding unit and a fracture-free unit, wherein the primary yielding unit and the secondary yielding unit respectively adopt two different yielding mechanisms to work in parallel; the secondary yielding unit in the buckling-proof brace is formed by yielding, clamping and restraining a web plate; in the primary yielding unit, a lead block is arranged between a joist steel wing edge and clamped steel pipes; and in the fracture-free unit, a plurality of groove-shaped bolt holes are formed on the clamped steel pipes on the two sides of joist steel. The brace has a simple structure, stable performance, low cost and a plurality of yielding points, is convenient to machine, is free of maintenance, can play a role in consuming energy under a low earthquake, can stably work under a strong earthquake, has a fracture-proof measurement under a super-strong earthquake at the same time, can relatively obviously reduce the damage of the earthquake, and can be widely applied to the reinforcement of a new building structure or an existing building so as to fulfill the aim of resisting earthquake and wind, improving the structural rigidity and controlling lateral migration.
Description
Technical field
The present invention relates to a kind of building unit, particularly relate to a kind of many yield points anti-flexing of exempting to rupture and support and method for supporting.
Background technology
The building structure of earthquake zone all will be considered the antidetonation of structure, in the prior art, and owing to building function flexible arrangement, the anti-seismic performance of frame support structure well are used widely; But can produce flexing when being supported on pressurized owing to the steel in the frame support structure system; So the section that often need strengthen support is to meet design requirement, the waste of material is more like this, and has increased seismic response; From and reduced its economy; Nonetheless, still can not guarantee under strong motion, to avoid the generation of flexing, in the frame supported system, adopt anti-flexing to support the support of replacement ordinary steel and can reduce the rigidity of structure, avoid the support unstability under the big shake; Therefore, anti-flexing supports and has obtained using more and more.
At present, anti-flexing supports generally to be made up of three essential parts, and the one, the surrender unit; The 2nd, buckling-restrained unit and three is linkage units; When surrender unit pressurized,, make the surrender unit flexing can not take place owing to receive the constraint of outside buckling-restrained unit; When pressure reaches its yield limit; Thereby the energy that consumes the input system can be surrendered in the surrender unit, and the important performance indexes that anti-flexing supports is its extension performance, and just anti-flexing supports the ratio of ultimate elongation amount and elongation at yield amount.
Common anti-flexing supports and all adopts homogenous material to process; Owing to receive the restriction of homogenous material character; The extension performance that common anti-flexing supports is not fine, and the earthquake of the actual generation of nature varies, and generally can be divided into little shake, middle shake, big shake, super large shake according to intensity area; And common anti-flexing is supported on entering work under the little shake, then just fracture easily under big shake; And to guarantee that big shake do not rupture down, and can not get into work in the time of then must being arranged in little shake, in the prior art, present common anti-flexing support generally is under little shake, not work, with the purpose that realizes not rupturing when shaking greatly.
Therefore, common anti-flexing is supported under the little shake and the ordinary steel supporting role is more or less the same, and does not carry out work; Play the energy dissipating effect, the target of improving building anti-seismic performance under little shake does not realize, thereby the application that anti-flexing is supported still is severely limited; It is that it can rupture when exceeding working range that common anti-flexing supports another problem that exists, and causes its moment to lose bearing capacity and rigidity, and this situation generally occurs when building suffers the super large shake; And building is under super large shake effect; Generally,, be easy to cause building directly to collapse if bearing capacity and rigidity that this moment, anti-flexing supported are lost suddenly near collapsing.
Support for common anti-flexing of the prior art, always have following deficiency.
1. most common anti-flexing supports in the prior art, when little shake, can not work.
2. when big shake or super large shake, be prone to bearing capacity and rigidity is lost suddenly.
Summary of the invention
In view of this; The present invention proposes a kind of many yield points anti-flexing of exempting to rupture and supports and method for supporting; One of its basic principle is to utilize the surrender device of two kinds of different performances to get into surrender respectively to come consumed energy; When little shake, once surrender the unit and carry out work, in, once surrender the unit during violent earthquake and work simultaneously in secondary surrender unit.
Its goal of the invention is to utilize the support of two kinds of different performances to be in parallel; And get into surrender respectively and come consumed energy, in reply, during small earthquake, once surrender the unit and carry out work, secondary surrender cell operation during big or middle earthquake; Owing to adopt the support manufacturing surrender unit of two kinds of different performances; The extension performance that anti-flexing supports has obtained large increase, when large, medium and small earthquake, all can give play to catabiotic effect, and through exempting from fragmentation cell under the super large geological process; Should anti-flexing support can not rupture the method that can work on.
Another goal of the invention of the present invention is through the concrete structure in the present embodiment; Realize once surrendering the parallel connection combination of unit and secondary surrender unit; Thereby reach under the situation of different earthquake degree according to concrete structure and to realize consumed energy; Stop building collapsing, reduce earthquake loss, to remedy the deficiency that flexing supports in the prior art.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of many yield points method for supporting that anti-flexing supports of exempting to rupture; It includes once surrenders unit, secondary surrender unit and exempts from fragmentation cell; Said secondary surrender unit is made up of web surrender and clamping constraint, and the said unit of once surrendering adopts two kinds of different surrenders mechanism to make respectively with secondary surrender unit, saidly once surrenders unit and secondary to surrender the unit be parallelly connected the relation; Surrender the unit in little earthquake situations condition next time and get into duty; In, secondary surrender unit gets into duty under the big earthquake situations condition, and with once surrender the common consumed energy in unit, under big shake or super large earthquake situations condition, exempting from fragmentation cell work; Prevent that support stiffness from losing suddenly, stop building and directly collapse.
The said unit of once surrendering is the fixing respectively lead in both sides up and down, when relative displacement takes place, makes lead produce shear strain, gets into yield situation, and consumed energy; Web surrender in the said secondary surrender unit is except the i iron web behind the edge of a wing; Said clamping is constrained to two clamping steel pipes of seizing on both sides by the arms in i iron web both sides and constitutes; In the middle of, big earthquake situations condition i iron web compressive deformation, the clamping steel tube confinement of clamping constraint the unstable failure that takes place of i iron web; Exempting from fragmentation cell is that two clamping steel pipes of seizing on both sides by the arms in i iron web both sides adopt bolt and stay bolt hole to fix; When being clamped in the shake of big shake or super large; Push between bolt and the stay bolt hole, anti-flexing support stiffness increases, and can prevent the i iron cripping.
A kind of many yield points are exempted to rupture and are prevented that flexing supports; It includes once surrenders unit, secondary surrender unit and exempts from fragmentation cell; Said secondary surrender unit is made up of web surrender and clamping constraint; Web surrender in the described secondary surrender unit is to have removed the i iron web behind the edge of a wing at the middle part of i iron, and said i iron two ends are the Support, and the part that the edge of a wing has been removed at the middle part is secondary surrender energy dissipating district, unit; Said clamping constraint is to be respectively arranged with the clamping steel pipe in the i iron both sides; The said unit of once surrendering is between the i iron edge of a wing of Support on the i iron and clamping steel pipe, to be provided with lead; Two sides of said lead are connected with its corresponding i iron edge of a wing and clamping steel pipe respectively mutually; Saidly exempt from that corresponding position is provided with several trough type bolts hole on the clamping steel pipe that fragmentation cell is the i iron both sides; Be positioned at the i iron support portion be provided with bolt hole on the position in bolt and the stay bolt hole on the corresponding clamping steel pipe, the both sides that bolt and the stay bolt hole of said clamping steel pipe through passing bolt hole is fixed on said i iron web.
As further optimization, said many yield points are exempted to rupture and are prevented that flexing supports, and include the gap blocker unit, and the gap blocker unit is a pad, and this pad is arranged between the i iron web in clamping steel pipe and secondary surrender energy dissipating district, unit.
As further optimization, said clamping steel pipe is the siphunculus that the cross section is square.
Many yield points of the present invention are exempted to rupture and prevented that flexing supports and method for supporting, and are simple in structure, easy to process; Stable performance, with low cost, avoid safeguarding, having a plurality of yield points; Can under little shake, bring into play the energy dissipating effect, but, have the anti-fracture measure of super large under shaking simultaneously at big shake steady operation down; Can comparatively significantly reduce earthquake, can be widely used in the reinforcing of new building structure or existed building, to reach the purpose of antidetonation wind resistance, the raising rigidity of structure, control sidesway.
Description of drawings
Fig. 1 is a side-looking structural representation of the present invention.
Fig. 2 is the plan structure sketch map of Fig. 1.
Fig. 3 be among Fig. 1 C-C to the sectional structure sketch map.
Fig. 4 be among Fig. 1 D-D to the sectional structure sketch map.
Fig. 5 be among Fig. 1 E-E to the sectional structure sketch map.
Fig. 6 is the power curve figure that anti-flexing supports in the prior art.
The power curve figure that Fig. 7 supports for anti-flexing among the present invention.
Among the figure, unit, 9 i iron, 10 leads are once surrendered in 1 Support, 2 clamping steel pipes, 3 pads, 4 bolts and stay bolt hole, 5 i iron webs, the 6 i iron edges of a wing, 7 secondaries surrender unit, 8.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment among the present invention is further explained.
As depicted in figs. 1 and 2; The many yield points that the present invention relates to are exempted to rupture and are prevented the method for supporting that flexing supports, and it includes once surrenders unit 8, secondary surrender unit 7 and exempt from fragmentation cell, and said secondary surrender unit 7 is retrained by web surrender and clamping and constitutes; The said unit 8 of once surrendering adopts two kinds of different surrender mechanism to make respectively with secondary surrender unit 7; The said unit 8 once surrendered is the parallel connection relation with secondary surrender unit 7, surrender unit 8 in little earthquake situations condition next time and get into duties, in, secondary surrender unit 7 gets into duties under the big earthquake situations condition; And with once surrender unit 8 common consumed energies; Under big shake or super large earthquake situations condition, exempting from fragmentation cell work, preventing that support stiffness from losing suddenly, stopping building and directly collapse.
The said unit 8 once surrendered is the fixing respectively lead 10 in both sides up and down, when relative displacement takes place, makes lead 10 produce shear strains, gets into yield situation, and consumed energy; Web surrender in the said secondary surrender unit 7 is except the i iron web 5 behind the edge of a wing; Said clamping is constrained to two clamping steel pipes 2 of seizing on both sides by the arms in i iron web 5 both sides and constitutes; Central, big earthquake situations condition i iron web 5 compressive deformations, the clamping steel pipe 2 of clamping constraint have retrained the unstable failure that i iron web 5 takes place; Exempting from fragmentation cell is that two clamping steel pipes 2 of seizing on both sides by the arms in i iron web 5 both sides adopt bolt and stay bolt hole 4 to fix, and when big shake or super large shake, pushes between bolt and the stay bolt hole 4, and anti-flexing support stiffness increase can prevent the i iron cripping.
Like Fig. 3-shown in Figure 5; The many yield points that the present invention relates to are exempted to rupture and are prevented that flexing supports; It includes once surrenders unit 8, secondary surrender unit 7 and exempts from fragmentation cell, and said secondary surrender unit 7 is made up of web surrender and clamping constraint, and the web surrender in the described secondary surrender unit 7 is to have removed the i iron web 5 behind the edge of a wing at the middle part of i iron 9; Said i iron 9 two ends are Support 1, and the part that the edge of a wing has been removed at the middle part is secondary surrender 7 energy dissipating districts, unit; Said clamping constraint is to be respectively arranged with clamping steel pipe 2 in i iron 9 both sides; The said unit 8 of once surrendering is between the i iron edge of a wing 6 on i iron 9 Support and clamping steel pipe 2, to be provided with lead 10; Two sides of said lead 10 are connected with clamping steel pipe 2 with its corresponding i iron edge of a wing 6 respectively mutually; Saidly exempt from that corresponding position is provided with several bolts and stay bolt hole on the clamping steel pipe 2 that fragmentation cell is i iron 9 both sides; On the position that is positioned at bolt and stay bolt hole 4 on 1 the corresponding clamping steel pipe 2 in i iron support portion, be provided with bolt hole, the both sides that bolt and the stay bolt hole of said clamping steel pipe 2 through passing bolt hole is fixed on said i iron web 5.
As further optimization, said many yield points are exempted to rupture and are prevented that flexing supports, and include the gap blocker unit, and the gap blocker unit is a pad 3, and this pad 3 is arranged between the i iron web 5 in clamping steel pipe 2 and secondary surrender 7 energy dissipating districts, unit.
As further optimization, the siphunculus that said clamping steel pipe 2 is square for the cross section.
Fig. 6 is the power curve figure that general anti-flexing supports in the prior art; See through curve map; At the starting stage power curve is an oblique line; Be illustrated in this stage anti-flexing and support and do not have consumed energy, be rotarily formed a hysteretic loop, be illustrated in this stage anti-flexing and be supported on and dwindle and lose catabiotic ability or fracture fully gradually at big shake and big shake stage power curve later.
Fig. 7 exempts to rupture for the many yield points among the present invention and prevents that flexing supports power curve figure; The two ends of i shaped steel 9 are formed Support 1; Lateral deformation can take place in building frame construction under little shake effect; Also along with lateral deformation takes place, displacement to axial takes place by means of once surrendering unit 8 with clamping steel pipe 2 to i shaped steel 9 in this moment, and lead 10 shear strain takes place, gets into surrender and consumed energy; Under middle shake and big shake effect, secondary surrender unit 7 can get into to be surrendered, under the reciprocating of seismic forces; The effect of bearing reciprocal pulling force and pressure is supported in energy dissipating; Under the constraint of buckling-restrained unit, unstable failure can not take place in secondary surrender unit 7, realizes the energy dissipating target; When geological process exceeds big shake level, push between bolt and the stay bolt hole 4, the energy dissipating support stiffness increases, and can prevent the fracture of energy dissipating section, and can prevent structural collapse.
In sum, the many yield points among the present invention are exempted from the simple in structure, easy to process of anti-flexing support that rupture; Stable performance, with low cost, avoid safeguarding, having a plurality of yield points; Can under little shake, bring into play the energy dissipating effect, but, have the anti-fracture measure of super large under shaking simultaneously at big shake steady operation down; Can comparatively significantly reduce earthquake, can be widely used in the reinforcing of new building structure or existed building, to reach the purpose of antidetonation wind resistance, the raising rigidity of structure, control sidesway.
The above is merely preferred embodiment of the present invention, is not to be used for limiting to claim of the present invention, and the equivalent structure that all utilizations manual of the present invention and accompanying drawing content are done changes, and all in like manner is contained in the scope of the present invention.
Claims (4)
1. yield point more than a kind is exempted to rupture and is prevented the method for supporting that flexing supports, and it is characterized in that, it includes once surrenders unit, secondary surrender unit and exempt from fragmentation cell; Said secondary surrender unit is made up of web surrender and clamping constraint, and the said unit of once surrendering adopts two kinds of different surrenders mechanism to make respectively with secondary surrender unit, saidly once surrenders unit and secondary to surrender the unit be parallelly connected the relation; Surrender the unit in little earthquake situations condition next time and get into duty, in, secondary surrender unit gets into duty under the big earthquake situations condition, and with once surrender the common consumed energy in unit; Under big shake or super large earthquake situations condition, exempt from fragmentation cell work; Prevent that support stiffness from losing suddenly, stop building and directly collapse that the said unit of once surrendering is the fixing respectively lead in both sides up and down; When relative displacement takes place; Make lead produce shear strain, get into yield situation, and consumed energy; Web surrender in the said secondary surrender unit is except the i iron web behind the edge of a wing; Said clamping is constrained to two clamping steel pipes of seizing on both sides by the arms in i iron web both sides and constitutes; In the middle of, big earthquake situations condition i iron web compressive deformation, the clamping steel tube confinement of clamping constraint the unstable failure that takes place of i iron web; Exempting from fragmentation cell is that two clamping steel pipes of seizing on both sides by the arms in i iron web both sides adopt bolt and stay bolt hole to fix; When being clamped in the shake of big shake or super large; Push between bolt and the stay bolt hole, anti-flexing support stiffness increases, and can prevent the i iron cripping.
2. yield point more than a kind is exempted to rupture and is prevented that flexing supports; It is characterized in that; It includes once surrenders unit, secondary surrender unit and exempts from fragmentation cell, and said secondary surrender unit is made up of web surrender and clamping constraint, and the web surrender in the described secondary surrender unit is to have removed the i iron web behind the edge of a wing at the middle part of i iron; Said i iron two ends are the Support, and the part that the edge of a wing has been removed at the middle part is secondary surrender energy dissipating district, unit; Said clamping constraint is to be respectively arranged with the clamping steel pipe in the i iron both sides; The said unit of once surrendering is between the i iron edge of a wing of Support on the i iron and clamping steel pipe, to be provided with lead; Two sides of said lead are connected with its corresponding i iron edge of a wing and clamping steel pipe respectively mutually; Saidly exempt from that corresponding position is provided with several bolts and stay bolt hole on the clamping steel pipe that fragmentation cell is the i iron both sides; Be positioned at the i iron support portion be provided with bolt hole on the position in bolt and the stay bolt hole on the corresponding clamping steel pipe, the both sides that bolt and the stay bolt hole of said clamping steel pipe through passing bolt hole is fixed on said i iron web.
3. many yield points according to claim 2 are exempted to rupture and are prevented that flexing supports, and it is characterized in that include the gap blocker unit, the gap blocker unit is a pad, and this pad is arranged between the i iron web in clamping steel pipe and secondary surrender energy dissipating district, unit.
4. many yield points according to claim 2 are exempted to rupture and are prevented that flexing supports, and is characterized in that said clamping steel pipe is the siphunculus that the cross section is square.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010570071 CN102080420B (en) | 2010-12-02 | 2010-12-02 | Multi-yield point fracture-free buckling-proof brace and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010570071 CN102080420B (en) | 2010-12-02 | 2010-12-02 | Multi-yield point fracture-free buckling-proof brace and method |
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| CN102080420A CN102080420A (en) | 2011-06-01 |
| CN102080420B true CN102080420B (en) | 2012-12-12 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425248B (en) * | 2011-12-19 | 2013-07-24 | 苗启松 | Assembling-type adjustable buckling-restrained support |
| CN102644336B (en) * | 2012-04-13 | 2015-04-22 | 上海赛弗工程减震技术有限公司 | Metal damper with restraining devices |
| CN105507442A (en) * | 2015-12-02 | 2016-04-20 | 同济大学 | Fishbone-shaped full-steel buckling-restrained brace |
| CN105696718B (en) * | 2016-01-25 | 2018-01-09 | 浙江交通职业技术学院 | A kind of anti-buckling energy-consumption pipe and its manufacture craft |
| CN105927019B (en) * | 2016-06-07 | 2018-05-18 | 长安大学 | The square-section two-stage surrenders anti-buckling support |
| US12075246B2 (en) | 2019-04-29 | 2024-08-27 | Sonicwall Inc. | Securing transmission paths in a mesh network |
| CN113322782B (en) * | 2021-05-31 | 2022-10-04 | 哈尔滨工业大学 | Welding-free shape memory alloy double-tube shearing energy dissipation device filled with rubber |
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| CN201037278Y (en) * | 2007-04-12 | 2008-03-19 | 北京建院科技发展有限公司 | H-shaped steel flexion-proof energy-dissipating support |
| CN201588314U (en) * | 2009-12-21 | 2010-09-22 | 清华大学 | Ribbed double square tube restricted type H-shaped section assembled flexion energy dissipation preventing support |
| CN201883561U (en) * | 2010-12-02 | 2011-06-29 | 苗启松 | Anti-breakage and buckling-prevention support with multiple yield points |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201037278Y (en) * | 2007-04-12 | 2008-03-19 | 北京建院科技发展有限公司 | H-shaped steel flexion-proof energy-dissipating support |
| CN201588314U (en) * | 2009-12-21 | 2010-09-22 | 清华大学 | Ribbed double square tube restricted type H-shaped section assembled flexion energy dissipation preventing support |
| CN201883561U (en) * | 2010-12-02 | 2011-06-29 | 苗启松 | Anti-breakage and buckling-prevention support with multiple yield points |
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Effective date of registration: 20231117 Address after: Room 406, 4th Floor, Building 1, No. A1 Guanghua Road, Tongzhou District, Beijing, 101104 Patentee after: BIAD TECHNOLOGY DEVELOPMENT CO.,LTD. Address before: 100045 Beijing city Xicheng District South Road No. 62 Patentee before: Miao Qisong Patentee before: Li Wenfeng |
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