CN103266683A - Core-replaceable partial filling type double-sleeve buckling-preventing support - Google Patents
Core-replaceable partial filling type double-sleeve buckling-preventing support Download PDFInfo
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- CN103266683A CN103266683A CN2013102170197A CN201310217019A CN103266683A CN 103266683 A CN103266683 A CN 103266683A CN 2013102170197 A CN2013102170197 A CN 2013102170197A CN 201310217019 A CN201310217019 A CN 201310217019A CN 103266683 A CN103266683 A CN 103266683A
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Abstract
The invention provides a partial filling type double-sleeve buckling-preventing support. The core-replaceable partial filling type double-sleeve buckling-preventing support can consume a large amount of earthquake input energy, reduces the damage to the structure under rare occurrence earthquakes, connects energy consuming cores and a node elastic region through a detachable bolted connection method, can also achieve post-earthquake replacement of the energy consuming core, reuses a restraint unit, and lowers repairing and replacement cost. The core-replaceable partial filling type double-sleeve buckling-preventing support at least comprises (1) the linear type energy consuming cores, (2) an internal steel sleeve restraining the linear type energy consuming core from partially buckling, (3) an external steel sleeve guaranteeing the overall stability of the support, (4) concrete filler between the internal steel sleeve and the external steel sleeve, (5) supporting node stiffening plates, (6) bolt connecting plates and bolts between the energy consuming cores and the supporting node stiffening plates, and (7) steel channel stiffening ribs. The core-replaceable partial filling type double-sleeve buckling-preventing support is convenient to support and is designed flexibly, the internal steel sleeve mainly prevents the linear type energy consuming cores from partial buckling and damage, the outer steel sleeve and the concrete filler mainly prevent the entire support from buckling failure, and the function of the internal steel sleeve and the function of the external steel sleeve are relatively independent. The core-replaceable partial filling type double-sleeve buckling-preventing support has the advantages of being low in machining cost, light in self-weight, good in economic benefit, convenient to construct and the like.
Description
(1) technical field
The present invention relates to building structure aseismatic prevention technique field, belong to structural damping Passive Control category, it is conveniently replaced to be specifically related to a kind of power consumption core shake back, only the local anti-flexing of two sleeve pipes of filling constraint supports, it can be used for resisting in the building structure horizontal earthquake action, improves structural seismic performance, and deadweight is lighter, peripheral constraint element also can fill repeated use, and cost is reduced greatly.
(2) background technology
China is earthquake-prone region, and earthquake disaster is inevitable, and it brings grave danger can for people's the security of the lives and property.Even if building structure is not collapsed in violent earthquake, also very macrolesion can take place, the normal use after the influence shake.Viewpoint from energy balance, the mechanism that causes structural earthquake to destroy is, earthquake input energy consumes by the plasticity power consumption of member, meanwhile, damage has also correspondingly taken place in structure, if the energy dissipation capacity of structure is not enough to consume earthquake input energy, the structure destruction that will collapse then.It is a kind of antidetonation new technology that anti-flexing supports, and it is installed on the original structure, can be used as additional power consumption member, enters plastic state prior to main structure body, dissipation earthquake input energy, thus protected agent structure, can be described as structural seismic " fuse ".
Operating principle and stressed mechanism that anti-flexing supports are very clear and definite, namely by peripheral constraint element constraint axially loaded steel member, guarantee that whole unstable failure and local buckling failure do not take place for it when pressurized, axle power member will show the good mechanical property of tension and compression symmetry in earthquake so, and surrender a large amount of dissipation earthquakes by this tension and compression and import energy, it is a kind of of metal energy-consumption shock-absorption device.
Anti-flexing supports and mainly is divided into two types: (1) is that the anti-flexing of tied mechanism supports with the concrete filled steel tube, and this kind support is by concrete filled steel tube constraint power consumption core; (2) the buckling-restrained support of clean steel type, this kind support is by the effect of contraction of realizations such as the steel bushing of putting more energy into to the power consumption unit.The anti-flexing of concrete filled steel tube restricted type supports and the anti-flexing of clean steel type supports pluses and minuses and the scope of application that has separately.Situations such as the anti-flexing of concrete filled steel tube supports, owing to can utilize the bending rigidity of concrete filled, makes the steel using amount that supports to reduce greatly, will become big but support deadweight, can cause lifting to be stranded for length and the bigger situation of tonnage, and amount of deflection is bigger; Though it is lighter that the anti-flexing of clean steel type supports deadweight, process velocity is fast, owing to only rely on the bending rigidity of steel bushing to prevent its unstable failure, has increased the consumption of steel and the apparent size of support inevitably, and the corresponding lifting of cost meeting is a lot.
In addition, present anti-flexing supports to be rarely had and can reuse, and usually after the earthquake, the power consumption kernel that anti-flexing supports will damage, and can not continue to use, need replacing again.As if being supported to replace, whole anti-flexing can cause a large amount of wastes.In fact, it only is the power consumption core that anti-flexing supports the position that damage takes place, and peripheral constraint element does not participate in the damping power consumption, and the destabilizing effect of lateral restraint core only is provided, and can reuse fully.
Basic principle according to the mechanics of materials, the most effective position of bending rigidity, cross section that rectangle or circular cross-section provide is the cross-sectional circumference zone, also be that the pair cross-section bending rigidity contribution of kernel of section position is little, this part material removal can greatly be reduced section area, and the influence of pair cross-section bending rigidity is less.
According to China " Code for design of steel structures ", if the anti-buckling energy-consumption core is the yi word pattern section, only needs to limit its flakiness ratio and be not more than
(f
yBe steel yield strength standard value) just can make it that cripling does not take place, and this condition more easily satisfies.Therefore, do not need constraint element and yi word pattern power consumption core are adjacent to constraint, only need retrain the dual-side of yi word pattern central layer, can prevent that it from cripling and whole unstable failure taking place.
The present invention has taken all factors into consideration above-mentioned factor, according to the basic mechanical principle, adopt local construction measure of filling two sleeve pipes, on the one hand having improved constraint element provides the stock utilization of bending rigidity, simultaneously considered that also the flakiness ratio condition of pressurized local buckling does not take place the yi word pattern central layer, saved unnecessary constraint material, reduced member dead weight to greatest extent, and this kind structural form provides possibility for shaking the back impaired power consumption central layer of replacement.The present invention is by bolted mode, and the core that will consume energy is connected with nodes domains, has avoided the central layer that anti-flexing in the past supports and node is welded to connect or elongated blanking, and the defective of can't segmentation replacing can only be replaced damage location after making its shake.The design that the invention enables anti-flexing to support is more flexible, and cost is cheaper, and performance is better, and applicability is stronger, the replaceable damage core in shake back.
(3) summary of the invention
The object of the invention is to provide a kind of peripheral constraint element to reuse, and the conveniently replaced anti-flexing in power consumption core cell shake back supports.This supports and adopts two sleeve pipe constraint types, improved the material bending rigidity utilization rate of constraint element greatly, and taken full advantage of the ability that power consumption core steel plate self opposing cripling is destroyed, mode by restriction yi word pattern central layer flakiness ratio, to be close to the line way of contact that constrained optimization is the dual-side constraint from the contact of face face to the constraint mechanism of yi word pattern central layer, inserts or the employing measure of putting more energy into needn't be adopted in interior cuff inside, fill concrete constraint material between internal and external casing only, thereby the member dead weight that alleviates, it is low to have processing cost, good in economic efficiency, advantages such as easy construction.This support is the bolt connecting mode by can conveniently disassembling also, the core unit that consumes energy is connected with supporting base end portion node elastic district, thereby has realized that power consumption unit, shake back is replaceable, the function that constraint element can reuse.
The object of the invention embodiment is: which comprises at least bolt junction plate between concrete inserts, (5) support node stiffener, (6) power consumption core and the support node stiffener between inside steel bushing that (1) yi word pattern power consumption core, (2) limit this yi word pattern power consumption core cripling, the inside and outside steel bushing in outer steel sleeve, (4) that (3) guarantee to support resistance to overturning and bolt, (7) channel-section steel stiffening rib.
The present invention also comprises following technical characterictic:
[1] described yi word pattern power consumption central layer (1) has strict flakiness ratio requirement for restriction, namely is not more than
[2] described yi word pattern power consumption central layer (1) is positioned over inner steel sleeve (2) inside, and the dual-side of central layer (1) is constrained on the right-angled corners of inner steel sleeve (2);
[3] described yi word pattern power consumption central layer (1) two ends are connected in support node elasticity stiffener (5) by Bolt plate (6);
[4] fill concrete material (4) between described outer steel sleeve (3) and the inner steel bushing (2);
[5] described channel-section steel stiffening rib (7) is welded in the inwall at outer sleeve (3) two ends, is close to its rotation of constraint with support node stiffener (5).
Beneficial effect of the present invention is: can be structure before the power consumption core surrender of the present invention bigger anti-side rigidity and supporting capacity is provided, its effect is supported with ordinary steel, but because the present invention whole unstable failure can not take place, material use efficient is higher; The present invention's a large amount of earthquakes input energy that can dissipate after the core surrender that consume energy for structure provides additional damping, are a kind of metal dampers of function admirable; The present invention is that the anti-flexing of partially filled type supports, and it is a lot of that stock utilization is improved, and deadweight reduces greatly; The present invention is by disassembled bolted mode, and the core that will consume energy is connected with the node elastic district, and the core that can realize consuming energy shake back is changed, and the constraint element recycling has reduced the reparation replacement cost; The present invention retrains the construction measure that stiffening rib is close to restraint joint elastic region stiffening rib by channel-section steel, has improved the bending resistance that supports, and can enough bear big moment of flexure; The present invention also can conveniently support flexible design, and the inner sleeve core cripling that mainly prevents from consuming energy is destroyed, and outer sleeve and concrete inserts mainly prevent a support integral unstable failure, function opposite independent; The present invention also has advantages such as processing cost is low, good in economic efficiency, easy construction.
(4) description of drawings
Fig. 1 is each member assembling diagrammatic elevational view of the present invention
Fig. 2 is vertical view of the present invention (1-1)
Fig. 3 is cross-sectional view of the present invention (2-2)
Fig. 4 is cross-sectional view of the present invention (3-3)
Fig. 5 is cross-sectional view of the present invention (4-4)
Fig. 6 is cross-sectional view of the present invention (5-5)
Fig. 7 is the present invention consume energy core and node stiffening rib connection layout
Fig. 8 is the arrangement schematic diagram of patent of the present invention in building structure
(5) specific embodiment
Referring to figs. 1 through Fig. 7, the outward appearance of apparatus of the present invention and structure requirement as can be known.
The present invention implements according to the following steps:
(1) determines this Unit Installation position and quantity, it is arranged in the weak location of structural seismic as far as possible.
(2) according to the structural analysis design, determine that the surrender bearing capacity of this device, rigidity are connected parameters such as power with node.
(3) according to design parameters, carry out design and the processing of apparatus of the present invention in conjunction with the concrete construction measure of this device.
(4) apparatus of the present invention and building structure main body are passed through modes such as bolt, welding, reliably connect, instantiation as shown in Figure 8.
Concrete construction measure and the embodiment of apparatus of the present invention are:
(1) according to building with analyze designing requirement, determine the apparent size of this device, comprise length, highly, parameter such as width, be connected with agent structure with convenient.
(2) according to surrender bearing capacity and yield displacement requirement, select yi word pattern power consumption core (1) size, guarantee that its flakiness ratio meets the demands.
(3) determine thickness and the size of outer sleeve according to supporting surrender bearing capacity and length, make it satisfy the monolithic stability requirement.
(4) each assembling parts of the present invention is carried out machining.
(5) yi word pattern is consumed energy central layer (1) places inner steel bushing inside.
(6) yi word pattern is consumed energy central layer (2) two ends and supporting base end portion elastic panel nodes stiffening rib (5) is connected to an integral body by bolt (6).
(7) with two the end inwalls of channel-section steel welding with outer sleeve.
(8) interior above-mentioned part is assembled the part that finishes, place outer sleeve (3) inside with angle 45 degree.
(9) the concrete grouting material is cast in inside and outside sleeve inside.
(10) treat that concrete curing finishes, support manufacturing finishes.
When (11) repair shake back, after bolt junction plate (6) can being disassembled, take out the yi word pattern central layer, replace splicing again, again as for inner sleeve inside, reparation is finished in and splicing again after the replacement.
Claims (8)
1. the anti-flexing of the two sleeve pipes of the interchangeable local filled-type of core supports, and it is characterized in which comprises at least: inside steel bushing, the bolt junction plate between concrete inserts, (5) support node stiffener, (6) power consumption core and the support node stiffener between the inside and outside steel bushing in outer steel sleeve, (4) that (3) guarantee to support resistance to overturning and bolt, (7) channel-section steel stiffening rib of this yi word pattern power consumption core cripling limited in (1) yi word pattern power consumption core, (2).
2. support according to the anti-flexing of the two sleeve pipes of the interchangeable local filled-type of the described core of claim 1, its inner power consumption core (1) shake back is replaceable.
3. support according to the anti-flexing of the two sleeve pipes of the interchangeable local filled-type of the described core of claim 1, can reuse after external constraint unit (2), (3), (4) shake.
4. support according to the anti-flexing of the two sleeve pipes of the interchangeable local filled-type of the described core of claim 1, yi word pattern power consumption central layer (1) has strict flakiness ratio requirement for restriction, namely is not more than
5. support according to the anti-flexing of the two sleeve pipes of the interchangeable local filled-type of the described core of claim 1, yi word pattern power consumption central layer (1) is positioned over inner steel sleeve (2) inside, and the dual-side of central layer (1) is constrained on the right-angled corners of inner steel sleeve (2).
6. support according to the anti-flexing of the two sleeve pipes of the interchangeable local filled-type of the described core of claim 1, yi word pattern power consumption central layer (1) two ends are connected in support node elasticity stiffener (5) by Bolt plate (6).
7. support fill concrete material (4) between outer steel sleeve (3) and the inner steel bushing (2) according to the anti-flexing of the two sleeve pipes of the interchangeable local filled-type of the described core of claim 1.
8. support according to the anti-flexing of the two sleeve pipes of the interchangeable local filled-type of the described core of claim 1, channel-section steel stiffening rib (7) is welded in inwall and the support node stiffener (5) at outer sleeve (3) two ends and is close to its rotation of constraint.
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| CN2013102170197A CN103266683A (en) | 2013-06-04 | 2013-06-04 | Core-replaceable partial filling type double-sleeve buckling-preventing support |
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| CN2013102170197A CN103266683A (en) | 2013-06-04 | 2013-06-04 | Core-replaceable partial filling type double-sleeve buckling-preventing support |
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Cited By (6)
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|---|---|---|---|---|
| CN104727458A (en) * | 2015-04-03 | 2015-06-24 | 河海大学 | Detachable anti-buckling supporting member constrained by bolts |
| CN106401253A (en) * | 2016-06-07 | 2017-02-15 | 长安大学 | Rhombic-section two-stage yield buckling preventing support |
| CN106499240A (en) * | 2016-09-20 | 2017-03-15 | 北京工业大学 | There is the telescopic anti-buckling support of multistage buckling strength and positioning metal rubber power consumption ring |
| CN108385837A (en) * | 2018-05-09 | 2018-08-10 | 华侨大学 | The energy dissipation brace of replaceable energy-consuming parts is arranged in a kind of both ends |
| CN114351887A (en) * | 2022-01-21 | 2022-04-15 | 长春工程学院 | Self-reset buckling-restrained brace device with replaceable energy consumption section |
| CN114438870A (en) * | 2022-03-07 | 2022-05-06 | 重庆交通大学 | Deck type concrete filled steel tube arch bridge with main arch ring provided with damping device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727458A (en) * | 2015-04-03 | 2015-06-24 | 河海大学 | Detachable anti-buckling supporting member constrained by bolts |
| CN106401253A (en) * | 2016-06-07 | 2017-02-15 | 长安大学 | Rhombic-section two-stage yield buckling preventing support |
| CN106401253B (en) * | 2016-06-07 | 2018-12-28 | 长安大学 | The diamond-shaped cross-section two-stage surrenders anti-buckling support |
| CN106499240A (en) * | 2016-09-20 | 2017-03-15 | 北京工业大学 | There is the telescopic anti-buckling support of multistage buckling strength and positioning metal rubber power consumption ring |
| CN106499240B (en) * | 2016-09-20 | 2019-06-21 | 北京工业大学 | Telescopic anti-buckling support with multistage buckling strength and positioning metal rubber energy consumption ring |
| CN108385837A (en) * | 2018-05-09 | 2018-08-10 | 华侨大学 | The energy dissipation brace of replaceable energy-consuming parts is arranged in a kind of both ends |
| CN114351887A (en) * | 2022-01-21 | 2022-04-15 | 长春工程学院 | Self-reset buckling-restrained brace device with replaceable energy consumption section |
| CN114438870A (en) * | 2022-03-07 | 2022-05-06 | 重庆交通大学 | Deck type concrete filled steel tube arch bridge with main arch ring provided with damping device |
| CN114438870B (en) * | 2022-03-07 | 2024-06-07 | 重庆交通大学 | Upper bearing type steel pipe concrete arch bridge with damping device on main arch ring |
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Application publication date: 20130828 |