CN103306044A - Three-dimensional overall prefabricated body for reinforcing T-shaped section beam - Google Patents
Three-dimensional overall prefabricated body for reinforcing T-shaped section beam Download PDFInfo
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- CN103306044A CN103306044A CN2013102329983A CN201310232998A CN103306044A CN 103306044 A CN103306044 A CN 103306044A CN 2013102329983 A CN2013102329983 A CN 2013102329983A CN 201310232998 A CN201310232998 A CN 201310232998A CN 103306044 A CN103306044 A CN 103306044A
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- reinforcing
- precast body
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- section beam
- main body
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 20
- 238000009941 weaving Methods 0.000 claims abstract description 8
- 238000009940 knitting Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 238000005728 strengthening Methods 0.000 description 7
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003733 fiber-reinforced composite Substances 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 229920006253 high performance fiber Polymers 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Abstract
The invention discloses a three-dimensional overall prefabricated body for reinforcing a T-shaped section beam. The cross section of the three-dimensional overall prefabricated body (3) is T-shaped; the prefabricated body (3) is formed by identical unit cells and is formed by weaving along the outer side of a T-shaped core mold; each unit cell structure is provided with main body axial yarns (1) and boundary weaving yarns (2); the main body axial yarns (1) are vertical and fixed inside the unit cell, and the boundary weaving yarns (2) on four surfaces penetrate through and interleave slantly along directions +/-45 degrees and +/-135 degrees, so as to form a spatial three-dimensional structure. The content of the main body axial yarns (1) in the prefabricated body can be more than 80%; the property in the thickness direction is enhanced on the basis that the axial property is remarkably enhanced; the T-shaped section beam can be woven in an integral copying mode at one time; negative influence on the T-shaped section beam caused by the fact that reinforcing points are not accurately selected and grooves and holes are formed complexly is overcome; the reinforcing process is simplified; the operation difficulty and the working difficulty are reduced.
Description
Technical field
The present invention relates to a kind of three-dimensional preformed body, in particular for the precast body of the T-shaped reinforcing that cuts section bar, a kind of three-dimension integrally precast body for reinforcing the T section beam specifically.
Background technology
Along with the fast development of concrete strengthening recovery technique, new material constantly is applied.Be accompanied by the civil nature process of high-performance fiber, high-performance fiber reinforced composite FRP(Fiber Reinforced Plastic) begin to be applied in structural strengthening and the improvement project, for the sector provides a new evolutionary path.Technique as reinforcing material, is made matrix compound formation continuous fiber reinforced composite materials with epoxy resin with carbon fiber, the contour performance fibers of aramid fiber, combines jointly stressed with concrete material.1981, Switzerland Meier at first adopted CFRP(Carbon Fiber Reinforced Plastic) strengthening with external bonding the Ebach bridge, after this, FRP particularly CFRP reinforced concrete member is developed rapidly in Japan and the United States, Europe.As the improvement of moulding CFRP, Japan has developed again carbon fibre fabric field-hardened technology, has greatly improved the range of application of CFRP in the engineering reinforcement field.China formally began that fibre reinforced plastics were reinforced reparation civil engineering structure in 1997 to be studied, and has begun the engineering application in 1998.
The tee girder core is used very extensive in engineering structure.For example in the monoblock type ribbed building roof, beam and floor are with stressed, in prefabricated components, sometimes because independently tee girder is made in the requirement of structure.Using in a large amount of concrete-bridges has tee girder, visible necessary to the reinforcing of tee girder.
Chapter 12 in " the 12 national composite academic conference " collection of thesis of publishing in October, 2002 ' is set forth in present situation and imagination ' one literary composition of FRP reinforcing T shape beams of concrete: the existence on the tee girder edge of a wing, the force area height reduces, the interior arm of force increases, thereby uses required area of the pulled steel to reduce.The stressed usefulness of T section is better than the square-section.Because the arm of force is long,, can all can improve bending resistance and the shear behavior of beam to the stickup cloth in the lower shaft of rib.Two approach of tee girder Shear Strengthening have also been introduced: (1) mounting method.Paste composite material sheet along the horizontal U-shaped of the flank of beam, make the perpendicular direction of fiber alignment in the axis of beam, can adopt and be cut at beam that paste continuously in the district or paste at the band interval; (2) embedding inlay technique.NSM(Near-Surface Mount) the FRP muscle is the another kind of method that improves the beam shear behavior.Slot by the side surface of being cut Qu Liang at tee girder, composite material bar is put into groove, pour into epoxy adhesive and get final product.Illustrate that simultaneously surperficial fluting can be vertical and oblique.
Above-mentioned two kinds of tee girder Shear Strengthening approach all are local solutions, starting point all is that performance by promoting the most weak position is to reach the purpose that improves whole T-shaped beam performance, but As time goes on the complexity of ess-strain, the position at weak position can change, therefore, reinforcing will be re-started after a period of time, and unnecessary manpower and financial resources need be expended.
Three-dimensional (3D) integral weaving technology is the high-new textile technology that is grown up by control of two-dimensional braided the external seventies, and the three-dimension integrally structural composite material has been eliminated the delamination of traditional laminated material, has good shock resistance.The technique of preparation three-dimension integrally composite preform mainly contains four step rule and two step method.Compare four step rule, relatively evening appears in two step method, and processing step is few, and is low to the equipment moving required precision, is convenient to realize automation, and the product sexual valence is higher; The main body axial yarn of two step method and the kind of border knitting yarn, line density are than adjustable, and the product designability is stronger; Main body axial yarn content can strengthen thickness direction in the situation that do not reduce axial property up to more than 80%, and the overall enhanced effect is more remarkable.The present invention is based on the two step method weaving, preparation tee girder Shear Strengthening three-dimension integrally precast body is eliminated the deficiency that existing mounting method and embedding inlay technique exist, and the shear behavior of Integral lifting tee girder improves the ageing of Shear Strengthening.
Summary of the invention
The objective of the invention is the problem that complexity is chosen in the reinforcement point, the punching of slotting is taken a lot of work and required great effort and cause local damage to reinforcing this cognition for the mounting method that has T-shaped beam reinforcing employing now and embedding inlay technique existence, a kind of three-dimension integrally precast body for reinforcing the T section beam is proposed, the three-dimension integrally precast body profiling of structure of the present invention is woven in the tee girder core outside, after compound stickup, become one with the T section beam, with mechanical properties such as Integral lifting T section beam shearing resistances.
Technical scheme of the present invention is:
A kind of three-dimension integrally precast body for reinforcing the T section beam, the cross section of described three-dimension integrally precast body is T shape, this precast body is made of identical unit cell, along tee girder core outside weaving forming, all comprise main body axial yarn and border knitting yarn in each single cell structure, the main body axial yarn is vertically motionless in unit cell inside, by the oblique formation space three-dimensional structures that interweave that run through of ± 45 ° and ± 135 ° directions in knitting yarn edge, border on four surfaces.
The cross section of precast body of the present invention is hollow T shape or the solid T shape that certain wall thickness is arranged.
The cross section of hollow T shape of the present invention is comprised of 8 limits, can form the end to end sealing T shape in limit and limit or wherein and the unconnected opening T of adjacent edge shape on one side by it.
The kind of main body axial yarn of the present invention and border knitting yarn is identical with specification or different, and yarn variety is carbon fiber, aramid fiber or high silica fiber.
Beneficial effect of the present invention:
Main body axial yarn content can strengthen thickness direction in the situation that do not reduce axial property up to more than 80% in the precursor structure of the present invention, and the overall enhanced effect is remarkable.
The present invention adopts the three-dimension integrally precast body to substitute the stickup of two-dimensional sheet lamination and embeds, avoided because the adverse effect that inaccurate or numerous and diverse fluting punching comes the T section sill bolt is chosen in the reinforcement point, the reinforcing operation be can simplify, operation easier and operation intensity reduced.
Description of drawings
Fig. 1 is precast body single cell structure schematic diagram of the present invention.
Fig. 2 is precursor structure schematic diagram of the present invention.
Fig. 3 is T-shaped precast body profile schematic diagram of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of three-dimension integrally precast body for reinforcing the T section beam, the cross section of three-dimension integrally precast body 3 is T shape, this precast body 3 is made of identical unit cell, along tee girder core outside weaving forming, all comprise main body axial yarn 1 and border knitting yarn 2 in each single cell structure, main body axial yarn 1 is vertically motionless in unit cell inside, by the oblique formation space three-dimensional structures that interweave that run through of ± 45 ° and ± 135 ° directions in border knitting yarn 2 edges on four surfaces.Described single cell structure profiling is woven in the tee girder core outside and consists of three-dimension integrally precast body 3, becomes one with the T section beam after compound stickup, with mechanical properties such as Integral lifting T section beam shearing resistances.
Such as Fig. 2, shown in Figure 3, the cross section 4 of precast body 3 of the present invention is for having hollow T shape or the solid T shape of certain wall thickness.Hollow T-shaped precast body 3 wherein needs the liner core to weave, and the shape of core is all T-shaped, and appearance and size is than the little wall thickness of appearance and size of precast body 3.
As shown in Figure 3, the cross section 4 of hollow T shape precast body 3 of the present invention is comprised of 8 limits, can form the end to end sealing T shape in limit and limit or wherein and the unconnected opening T of adjacent edge shape on one side by it.
The kind of main body axial yarn 1 of the present invention and border knitting yarn 2 is identical with specification or different, and yarn variety is carbon fiber, aramid fiber or high silica fiber.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (4)
1. three-dimension integrally precast body of be used for reinforcing the T section beam, the cross section that it is characterized in that described three-dimension integrally precast body (3) is T shape, this precast body (3) is made of identical unit cell, along tee girder core outside weaving forming, all comprise main body axial yarn (1) and border knitting yarn (2) in each single cell structure, main body axial yarn (1) is vertically motionless in unit cell inside, by the oblique formation space three-dimensional structures that interweave that run through of ± 45 ° and ± 135 ° directions in the border knitting yarn (2) on four surfaces edge.
2. a kind of three-dimension integrally precast body for reinforcing the T section beam according to claim 1 is characterized in that the cross section (4) of precast body (3) is for having hollow T shape or the solid T shape of certain wall thickness.
3. a kind of three-dimension integrally precast body for reinforcing the T section beam according to claim 2, the cross section (4) that it is characterized in that described hollow T shape precast body (3) is comprised of 8 limits, can form the end to end sealing T shape in limit and limit or wherein and the unconnected opening T of adjacent edge shape on one side by it.
4. according to claim 1 and 2 or 3 described a kind of three-dimension integrally precast bodies for reinforcing the T section beam, it is characterized in that described main body axial yarn (1) is identical with specification or different with the kind of border knitting yarn (2), yarn variety is carbon fiber, aramid fiber or high silica fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102329983A CN103306044A (en) | 2013-06-13 | 2013-06-13 | Three-dimensional overall prefabricated body for reinforcing T-shaped section beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102329983A CN103306044A (en) | 2013-06-13 | 2013-06-13 | Three-dimensional overall prefabricated body for reinforcing T-shaped section beam |
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| CN103306044A true CN103306044A (en) | 2013-09-18 |
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| CN2013102329983A Pending CN103306044A (en) | 2013-06-13 | 2013-06-13 | Three-dimensional overall prefabricated body for reinforcing T-shaped section beam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137253A (en) * | 2017-06-27 | 2019-01-04 | 阿迪达斯股份公司 | It is engineered woven tube |
| CN112391732A (en) * | 2020-10-27 | 2021-02-23 | 南京玻璃纤维研究设计院有限公司 | Three-dimensional woven special-shaped beam and preparation method thereof |
| CN113481655A (en) * | 2021-07-01 | 2021-10-08 | 西安英利科电气科技有限公司 | Weaving device and weaving method for carbon-carbon throat lining prefabricated body |
| WO2022247654A1 (en) * | 2021-05-24 | 2022-12-01 | 中联重科股份有限公司 | Fiber composite beam structure and manufacturing method therefor, boom section, boom, and mechanical device |
| CN116971086A (en) * | 2023-08-02 | 2023-10-31 | 陕西元丰纺织技术研究有限公司 | Preparation method of silicon carbide composite material nuclear fuel cladding preform |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137253A (en) * | 2017-06-27 | 2019-01-04 | 阿迪达斯股份公司 | It is engineered woven tube |
| CN112391732A (en) * | 2020-10-27 | 2021-02-23 | 南京玻璃纤维研究设计院有限公司 | Three-dimensional woven special-shaped beam and preparation method thereof |
| CN112391732B (en) * | 2020-10-27 | 2022-01-11 | 南京玻璃纤维研究设计院有限公司 | Three-dimensional woven special-shaped beam and preparation method thereof |
| WO2022247654A1 (en) * | 2021-05-24 | 2022-12-01 | 中联重科股份有限公司 | Fiber composite beam structure and manufacturing method therefor, boom section, boom, and mechanical device |
| CN113481655A (en) * | 2021-07-01 | 2021-10-08 | 西安英利科电气科技有限公司 | Weaving device and weaving method for carbon-carbon throat lining prefabricated body |
| CN116971086A (en) * | 2023-08-02 | 2023-10-31 | 陕西元丰纺织技术研究有限公司 | Preparation method of silicon carbide composite material nuclear fuel cladding preform |
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Application publication date: 20130918 |