CN201459947U - Fiber reinforced composite material-restraining bending and energy consumption-preventing steel support - Google Patents
Fiber reinforced composite material-restraining bending and energy consumption-preventing steel support Download PDFInfo
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- CN201459947U CN201459947U CN2009201085285U CN200920108528U CN201459947U CN 201459947 U CN201459947 U CN 201459947U CN 2009201085285 U CN2009201085285 U CN 2009201085285U CN 200920108528 U CN200920108528 U CN 200920108528U CN 201459947 U CN201459947 U CN 201459947U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 101
- 239000010959 steel Substances 0.000 title claims abstract description 101
- 238000005452 bending Methods 0.000 title abstract description 5
- 239000003733 fiber-reinforced composite Substances 0.000 title abstract 3
- 239000000835 fiber Substances 0.000 claims abstract description 34
- 239000004744 fabric Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000004567 concrete Substances 0.000 claims abstract description 13
- 238000005265 energy consumption Methods 0.000 claims description 42
- 239000002131 composite material Substances 0.000 claims description 27
- 238000010276 construction Methods 0.000 claims description 14
- 239000006260 foam Substances 0.000 claims description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 238000009941 weaving Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
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- 238000013461 design Methods 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 4
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- 241000196324 Embryophyta Species 0.000 description 1
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Abstract
A fiber reinforced composite material-restraining bending and energy consumption-preventing steel support belongs to the technical field of engineering of quake-proof and vibration attenuation structure, and is characterized in that: an inner core steel member is externally sheathed with a full-fiber reinforced composite material sleeve in a full-length manner or is externally wound with fiber cloth totally, or the FRP sleeve is externally wound with the fiber cloth, thus forming an FRP restraining unit; in order to deliver mutual action between the inner core steel member and the FRP sleeve restriction and provide certain bending rigidity, filling material can be fully or locally added in or outside the inner core steel member; and in order to reduce the inner core steel member and the filling material, the FRP restrains friction force between the units, and an antifriction layer is added on the surface of the inner core steel member. The steel support has the advantages of light self-weight of the member, flexible design, easy forming, and saving of concrete and steel material.
Description
Technical field
The utility model relates to a kind of novel anti-buckling energy-consumption supporting member, can be used for the antidetonation vibration damping of engineering structures, belongs to the Structural Engineering field.
Background technology
The steel support frame structure has better anti under severe earthquake action, but flexing takes place in common being supported on easily under the severe earthquake action, the section utilization rate is lower, and low cycle fatigue property is undesirable, and fibre reinforced composites (Fiber ReinforcedPolymer, being FRP) constraining anti-buckling supports and then can remedy this deficiency, can prevent from effectively to support whole unstability takes place, and by the further integrally-built anti-seismic performance of improvement of better hysteretic energy.
The notion that buckling-restrained power consumption is supported was proposed by people such as Yoshino as far back as 1971, and to have carried out be the experimental study of the buckling-restrained support that retrains outward with the shear wall.After this a large amount of scholars has carried out the Study on behavior of the buckling-restrained support of various forms (BucklingRestrained Brace abbreviates BRB as) member.In addition, also have many researchers that the whole anti-seismic performance of the structure of employing BRB is studied, proved absolutely that BRB is to improving the validity of structural seismic performance.At present, existing more than 300 of Japan, the U.S. has more than 30 building to adopt this support, American Iron and Steel Institute (AISC) and California IEEE (SEAOC) write design guidelines AISC/SEAOC (2001) and AISC (2002) with the design of BRB framework, have also added the method for designing and the test index of BRB support frame among the FEMA368.The research of BRB is with to be applied in China development very fast, is introduced into domesticly before and after 2004, accepted by China structural engineer soon, and uses in some engineerings.
At present, existing BRB product all is to adopt steel and concrete to make.Current research finds that the inhibition flexing effect of outsourcing constraint is relevant with its ultimate strength among the BRB, and steel and concrete specific strength (strength/density) are less, for the function that realizes BRB need be used thicker concrete and steel.Therefore, the weight of these existing BRB is all heavier, and transportation and all inconvenience is installed from shortcomings such as heavy load are bigger, exists certain difficulty applying and use to the scene transformation of original structure with in reinforcing.And the specific strength of FRP material is higher than steel and concrete, therefore the utility model suggestion adopts FRP as the constraint system, materials such as mortar, light weight concrete construction, thin bamboo strips used for weaving, timber or foam are as packing material, can effectively alleviate deadweight and the sectional dimension of BRB, obtain same effect with lighter weight.In addition, just need not to change in use common support and can be transformed into BRB.
Summary of the invention
The purpose of this utility model is to provide a kind of new type FRP constraining anti-buckling energy-consumption to support, promptly adopt the FRP pipe drawing and extruding section bar and the elongated core steel steel that entangles of longitudinal fiber cloth composition sleeve pipe of plant produced to support, the outer again hoop cloth that twines is carried out the hoop constraint, FRP sleeve pipe and core steel are inserted packing materials such as mortar, light weight concrete construction, thin bamboo strips used for weaving, timber or foam between supporting, thereby improve rigidity, bearing capacity and hysteretic energy ability that steel supports, realize the new type FRP constraining anti-buckling energy-consumption support of remarkable advantages such as a kind of lightweight, construction molding be convenient, corrosion-resistant.
FRP mixes the nonmetals that are composited through certain processing technique by glass fiber or the contour performance fibers of carbon fiber with resin matrix. it have lightweight, high-strength, construction molding convenient, remarkable advantage such as corrosion-resistant. nearly ten years, FRP in the development of Structural Engineering Application for Field rapidly, now become the important supplement of traditional structural materials such as concrete, steel, reasonably FRP be applied to become in all kinds of works important directions of Structural Engineering development.
FRP constraining anti-buckling energy-consumption steel support to adopt FRP (FRP sleeve pipe and twine FRP cloth outward) and the outer constrained system of packing material (mortar, light weight concrete construction, thin bamboo strips used for weaving, timber or foam etc.) formation, can form FRP constraining anti-buckling steel and support, or the ordinary steel support is transformed into the support of FRP constraining anti-buckling.Following advantage is arranged relatively:
(1) member dead weight is light, all offers convenience for transportation, installation, and imposed load is also little;
(2) have designability, the laying direction and the ratio of stressed Demand Design fiber that can basis can make full use of material and improve support performance, reduce section.
(3) moulding is easy, can design the FRP constraining anti-buckling steel that makes new advances and support, and also can be used for transforming existing common support structure.
One of the utility model feature is, contains: the buckling-restrained unit of inner core steel and fibre reinforced composites, wherein:
The inner core steel is supported for the ordinary steel member, two ends are provided with joint construction, so that be connected with agent structure, described two ends joint construction constitutes the linkage section that described reinforced-fiber composite constraining anti-buckling energy-consumption steel supports, and the section form that described inner core steel supports is various;
The buckling-restrained unit of fibre reinforced composites supports outer fibre reinforced composites pipe for being enclosed within described kernel steel vertically, constitute the core segment that described reinforced-fiber composite constraining anti-buckling supports, and the changeover portion between described core segment and the described two ends linkage section, improve the flexing bearing capacity that described inner core steel props up support integral, and retrain this support lateral deformation of inner core steel and local distortion.
Two of the utility model feature is that the buckling-restrained unit of described fibre reinforced composites is made of full fibre reinforced composites sleeve pipe.
Three of the utility model feature is that the buckling-restrained unit of described fibre reinforced composites is made of the cloth looping.
Four of the utility model feature is that the cloth outside this sleeve pipe constitutes the buckling-restrained unit of described fibre reinforced composites jointly by described fibre reinforced composites sleeve pipe and looping.
Five of the utility model feature is that described cloth is entangled in the two ends of described fibre reinforced composites sleeve pipe outward.
Six of the utility model feature is, the buckling-restrained unit of described fibre reinforced composites and described inner core steel are inserted filler between supporting fully or partly, and described filler is any in the following material: mortar, light weight concrete construction, thin bamboo strips used for weaving, timber or foam.
Seven of the utility model feature is that described inner core steel stayed surface has an anti-attrition layer, for being coated with oil reservoir or PVC layer or polyethylene layer or Teflon layer.
Eight of the utility model feature is that described inner core steel supporting section is any in the various cross sectional shape shown in Figure 1.
Description of drawings
Fig. 1 a is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 b is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 c is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 d is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 e is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 f is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 g is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 h is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 i is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 j is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 k is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 l is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 m is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 n is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 o is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 p is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 q is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 r is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 s is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 t is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Fig. 1 u is that a kind of FRP constraining anti-buckling energy-consumption steel of section form supports.
Vertical composition schematic diagram that Fig. 2 FRP constraining anti-buckling energy-consumption steel supports.
Fig. 3 a is the constructional drawing that FRP constraining anti-buckling energy-consumption steel supports.
Fig. 3 b is the A-A sectional view that FRP constraining anti-buckling energy-consumption steel supports.
Fig. 4 a is the constructional drawing that FRP constraining anti-buckling energy-consumption steel supports.
Fig. 4 b is the B-B sectional view that FRP constraining anti-buckling energy-consumption steel supports.
Fig. 5 a is the constructional drawing that FRP constraining anti-buckling energy-consumption steel supports.
Fig. 5 b is the C-C sectional view that FRP constraining anti-buckling energy-consumption steel supports.
The specific embodiment
The FRP constraining anti-buckling supports and comprises inner core steel, the buckling-restrained unit of FRP, packing material, adhesive-less layer 4 parts composition.The buckling-restrained unit of inner core steel and FRP is for having, and packing material is not for must be provided with part, and adhesive-less layer can substitute with the space.
The inner core steel is the ordinary steel member, and two ends are provided with joint construction, can be connected with agent structure, and its section form is various, as shown in Figure 1.Main effect: (1) provides axial bearing capacity and rigidity; (2) when bigger geological process, carry out hysteretic energy by the pressurized surrender and the tension surrender of steel.
The buckling-restrained unit of FRP is that this utility model is peculiar, is managed and twined FRP cloth outward by FRP to constitute, and also can constitute with twining FRP cloth outward entirely, forms hollow sleeve, and the inner core steel bushing is gone into wherein.Main effect has: (1) improves the bending rigidity of compressed member, thereby improves the flexing bearing capacity of member integral body; (2) development of the inner steel core of constraint lateral deformation makes it reach the pressurized surrender, and hysteretic energy can be provided.
Packing material can be microdilatancy foam mortar, light weight concrete construction, thin bamboo strips used for weaving, timber or foam, and the space between FRP pipe and the core steel is filled.Main effect has: (1) passes on the interaction of steel core and the about interfascicular of FRP; (2) provide certain bending rigidity.
Adhesive-less layer is the measure that the employing oiling that is coated on inner core steel surface, PVC layer, polyethylene layer, Teflon layer etc. are reduced friction, main purpose is the frictional force that reduces between inner core steel and outer packing material and FRP constraint element, the core steel can longitudinally be stretched, and the outside is not subjected to axial force.As being provided with slight void between packing material and core steel, also adhesive-less layer can be set.
The FRP constraining anti-buckling supports and is divided into linkage section, changeover portion and core segment.As shown in Figure 2.
The constituted mode of the outer FRP constraint element during the FRP constraining anti-buckling supports is various, and 3 kinds of forms are typically arranged, as shown in Figure 3:
(1) full FRP sleeve pipe;
(2) full cloth looping;
(3) the outer entanglement of FRP sleeve pipe and cloth closed.
Vertical composition schematic diagram that Fig. 2 FRP constraining anti-buckling steel supports.Kernel unit can be divided into constraint surrender section (core segment), the non-surrender section of constraint (changeover portion) again, not have the non-surrender section of constraint (linkage section) 3 parts, as shown in Figure 2.
In Fig. 3
(a) full FRP cannula configuration form;
(b) cloth twines the enhancing structural form outward;
(c) structural form of FRP sleeve pipe and outer entanglement fiber cloth combination.
1. the core steel supports: the steel of available different cross section type supports, and the cross section type that the core steel supports as shown in Figure 1;
2. filler: branch complete filling, partially filled and do not have filling, insert material and comprise various lightweight fillers such as microdilatancy foam mortar, light weight concrete construction, thin bamboo strips used for weaving, timber or foam;
3.FRP sleeve pipe: difform cross sections such as available pipe, square tube;
4. cloth twines enhancing outward: carry out looping with various cloth according to the design paving mode, use resin bonding.
Specific implementation process of the present utility model is as follows:
Design stage:
(1) according to the force request of structural seismic damping, designs bearing capacity, rigidity and the deformability requirement supported;
(2) according to deformation requirements design steel core section and connected node, do not consider unstability;
(3) require the outer constraint of design FRP system according to stability bearing capacity, comprise parameters such as thickness, machine direction;
(4), avoid local splitting and reverse according to maximum load capacity design bureau cage structure.
(5) form design drawing.
Process segment:
(6) according to design drawing machined steel member;
(7) prepare the FRP material according to design drawing;
(8) the steel member being carried out surperficial adhesive-less layer handles;
(9) overcoat FRP pipe;
(10) insert lightweight filler;
(11) outer entanglement fiber cloth strengthens.
(12) carry out product quality inspection.
*: according to the actual configuration that supports, above order can change.
The implementation phase:
(13) be transported to engineering site;
(13) install and use;
(15) make regular check on.
Claims (7)
1. the reinforced-fiber composite constraining anti-buckling energy-consumption steel supports, it is characterized in that, contain: the inner core steel supports and the buckling-restrained unit of fibre reinforced composites, wherein: the inner core steel is supported for the ordinary steel member, two ends are provided with joint construction, so that be connected with agent structure, described two ends joint construction constitutes the linkage section that described reinforced-fiber composite constraining anti-buckling energy-consumption steel supports, and the section form that described inner core steel supports is various; The buckling-restrained unit of fibre reinforced composites supports outer fibre reinforced composites pipe for being enclosed within described kernel steel vertically, constitute the core segment that described reinforced-fiber composite constraining anti-buckling supports, and the changeover portion between described core segment and the described two ends linkage section, improve the flexing bearing capacity that described inner core steel props up support integral, and retrain this support lateral deformation of inner core steel and local distortion.
2. anti-buckling energy-consumption steel according to claim 1 supports, and it is characterized in that the buckling-restrained unit of described fibre reinforced composites is made of full fibre reinforced composites sleeve pipe.
3. anti-buckling energy-consumption steel according to claim 1 supports, and it is characterized in that the buckling-restrained unit of described fibre reinforced composites is made of the cloth looping.
4. anti-buckling energy-consumption steel according to claim 1 supports, and it is characterized in that the cloth outside this sleeve pipe constitutes the buckling-restrained unit of described fibre reinforced composites jointly by fibre reinforced composites sleeve pipe and looping.
5. anti-buckling energy-consumption steel according to claim 4 supports, and it is characterized in that described cloth is entangled in the two ends of described fibre reinforced composites sleeve pipe outward.
6. anti-buckling energy-consumption steel according to claim 1 supports, it is characterized in that, the buckling-restrained unit of described fibre reinforced composites and described inner core steel are inserted filler between supporting fully or partly, and described filler is any in the following material: mortar, light weight concrete construction, thin bamboo strips used for weaving, timber or foam.
7. anti-buckling energy-consumption steel according to claim 1 supports, and it is characterized in that described inner core steel stayed surface has an anti-attrition layer, for being coated with oil reservoir or PVC layer or polyethylene layer or Teflon layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009201085285U CN201459947U (en) | 2009-05-27 | 2009-05-27 | Fiber reinforced composite material-restraining bending and energy consumption-preventing steel support |
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| CN2009201085285U CN201459947U (en) | 2009-05-27 | 2009-05-27 | Fiber reinforced composite material-restraining bending and energy consumption-preventing steel support |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102296721A (en) * | 2011-07-21 | 2011-12-28 | 清华大学 | Single-rod square steel tube support with casing and manufacturing method thereof |
| CN102505770A (en) * | 2011-11-10 | 2012-06-20 | 上海同育建筑科技有限公司 | Energy dissipating element of grouting sleeve |
| CN102877568A (en) * | 2012-09-28 | 2013-01-16 | 清华大学 | Double-inner-core buckling-preventive support structure |
| CN103104052A (en) * | 2013-02-07 | 2013-05-15 | 陈明中 | Transformation type anti-buckling energy-consuming support |
| CN103249901A (en) * | 2010-11-05 | 2013-08-14 | 杰富意钢铁株式会社 | Steel pipe stiffening brace and production method therefor |
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| CN103981975A (en) * | 2014-05-12 | 2014-08-13 | 东南大学 | Bamboo-wood-filled buckling restrained support |
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| CN104652645A (en) * | 2015-02-15 | 2015-05-27 | 海南大学 | Energy consumption enhancement assembly-type prefabricated shear wall |
| CN105507442A (en) * | 2015-12-02 | 2016-04-20 | 同济大学 | Fishbone-shaped full-steel buckling-restrained brace |
| CN105696719A (en) * | 2016-01-26 | 2016-06-22 | 大连理工大学 | Buckling restrained energy-consuming support structure restrained by adopting GFRP angle steel |
| CN105696719B (en) * | 2016-01-26 | 2018-06-08 | 大连理工大学 | A kind of flexion-proof energy consumption supporting structure constrained using GFRP angle steel |
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| CN106593060A (en) * | 2017-02-06 | 2017-04-26 | 同济大学 | Novel buckling energy consumption support |
| CN109339545A (en) * | 2018-11-28 | 2019-02-15 | 上海材料研究所 | Buckling-restrained energy-dissipation |
| CN109826331A (en) * | 2019-02-16 | 2019-05-31 | 北京工业大学 | Graving piece material combined support and the practice in a kind of reinforced arrangement of reinforcement steel pipe of assembled FRP |
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| CN110924553A (en) * | 2019-12-10 | 2020-03-27 | 东北林业大学 | Assembled buckling restrained brace |
| CN110924553B (en) * | 2019-12-10 | 2021-11-12 | 东北林业大学 | Assembled buckling restrained brace |
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