CN101792954A - In-layer hybrid fiber cloth used in civil engineering and multilayer hybrid fiber cloth - Google Patents
In-layer hybrid fiber cloth used in civil engineering and multilayer hybrid fiber cloth Download PDFInfo
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Abstract
The invention discloses in-layer hybrid fiber cloth used in civil engineering and multilayer hybrid fiber cloth, which can effectively improve fiber efficiency and the ductility of a reinforced component and remarkably reduce manufacturing cost and use cost on the premise of ensuring the stiffness and the strength of the reinforced component. The in-layer hybrid fiber cloth comprises fibers (1) with high elongation, fibers (2) with high strength and high elasticity modulus and connecting lines (3), wherein the fibers (2) with high strength and high elasticity modulus and the fibers (1) with high elongation are woven in a layer through connecting lines (3) so as to form hybrid fiber cloth; the fibers (2) with high strength and high elasticity modulus and the fibers (1) with high elongation are arranged in parallel along the length direction; and the connecting lines (3) are arranged along the width direction. The multilayer hybrid fiber cloth comprises at least two layers of the in-layer hybrid fiber cloth used in the civil engineering, wherein the layers of the in-layer hybrid fiber cloth used in the civil engineering are of interlayer hybrid. The in-layer hybrid fiber cloth can be widely used in the field of the civil engineering.
Description
Technical field
The present invention relates to a kind of cloth, relate in particular to the cloth that is used for structural strengthening in a kind of civil engineering.
Background technology
At present, fibre reinforced composites (Fiber Reinforced Plastic is called for short FRP) ruggedized construction technology has become a kind of common technology that domestic and international civil engineering structure is reinforced.But it all is that single fibrous material is reinforced that domestic still external all research is used, comprise carbon fiber (Carbon Fiber, abbreviation CF), glass fibre (Glass Fiber, abbreviation GF), aramid fiber (Kevlar Fiber, be called for short KF) and basalt fibre (Basalt Fiber, be called for short BF) etc., and the overwhelming majority is carbon fibre reinforced composite (CFRP) reinforcing, other several fiber applications are less.Yet the pluses and minuses of single fibrous material are often all very outstanding, for example the bullet mould of CF and intensity height, and fracture elongation is low, and mainly rely on the import price costliness; On the contrary, though GF plays mould and intensity is lower, its fracture elongation height, and low price (only be CF 1/9～1/3).In addition, exist fibrous fracture, defective and weak link among the FRP inevitably, these stressed big weak fiber fractures earlier when the FRP tension, the fiber stressing conditions produces and redistributes, thereupon there being some stressed big and weak fibers to rupture successively again, until the fibre bundle complete rupture.Owing to single fibrous material physical property is identical, the crackle of single FRP immediately to the periphery development, causes adjacent fiber to rupture one by one rapidly easily, integral body moment destruction is taken place easily, so its performance performance rate is very low.Experimental study shows both at home and abroad, by CFRP reinforced concrete cylinder, the average breaking strain that records CFRP can only reach about 0.5%, be that the fiber percentage elongation only brings into play 1/3, also only reach about 1% and reinforce the average breaking strain that bending resistance component records CFRP, the performance performance rate that this shows CFRP is very low, adds CFRP and costs an arm and a leg, and adopts single CFRP reinforcing can cause the huge wasting of resources.In addition, carbon fiber high-strength degree and high-elastic mould but the too low characteristic of fracture elongation causes being reinforced member ductility easily reduces greatly, unfavorable to structural seismic.
Studies have shown that of fibrous composite field: can produce after mixing between the fiber of different nature and mix effect, it can allow brings out one's strengths to make up for one's weaknesses between the different fibers.Mixing with GF and CF is that the hybrid ratio of example: GF and CF is that the breaking strain of 2 fiber hybrid composite (HFRP) is higher by 30～50% than CFRP, the modulus of glass fibre reinforced composion (GFRP) is generally lower, but as the carbon fiber of introducing 50% is as the top layer, be combined into the sandwich form, its modulus can reach 90% of CFRP; Be non-linear successively decreasing the fatigue life of single GFRP, as introduce 50% carbon fiber, and will change linear decrease its fatigue life into, and its pulsating stress also is greatly improved; The amount of introducing carbon fiber is 2/3 o'clock, and its life-span is near single CFRP; Though GFRP belongs to electrically insulating material, it has the static of generation and charged character, and carbon fiber is conduction, nonmagnetic substance, has the electricity of removing and prevents charged effect with two kinds of fiber hybrids.This shows, two or more materials is made the shortcoming that composite can overcome homogenous material, improve the performance of homogenous material, and the coupling of passing through each component acts synergistically, the unexistent new capability of original homogenous material can also occur, reach the comprehensive utilization of material, to increase economic efficiency.HFRP can produce the repeatedly fracture property that single FRP does not have as shown in Figure 1.
But, being applied in the hybrid fiber cloth that is used for structural strengthening in the civil engineering at present all is " interlayer mixes ", be that hybrid fiber cloth comprises two-layer at least fiber, in every layer the layer all are cloth of a kind of existing type, belong to fiber of different nature respectively between layer and the layer, the layer with layer between be connected by containing resin pickup, though the cloth that this interlayer mixes can be utilized the characteristic of fiber of different nature, but the proportioning between the fiber of different nature is difficult for adjusting, therefore the adjustment of its overall physical properties is abundant inadequately, can not adjust as required; And, character between layer and the layer differs bigger, this combination has harmful effect to the performance uniformity of cloth integral body, this interlayer mixes needs three layers of fiber just can reach stressed effect symmetrically and evenly at least, but the situation that one deck and two-layer FRP reinforce in concrete structure reinforcement is more, therefore existing interlayer mixes and often can only adopt one deck carbon fiber to add the form of layer of glass, and the cloth of two-layer unlike material also needs to overlap separately when pasting, except waste material, also can influence the strengthening with external bonding effect, so cloth mixes performance and can not give full play of; In addition, the cloth number of plies that this interlayer mixes is many, waste material, and its cost height uses uneconomical.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, provide a kind of under the prerequisite of rigidity that guarantees to be reinforced member and intensity, can improve fiber efficient effectively and be reinforced the ductility of member, and can significantly reduce the layer hybrid fiber cloth used in civil engineering of cost and use cost.
In addition, the present invention also provides a kind of multilayer hybrid fiber cloth that comprises above-mentioned layer hybrid fiber cloth used in civil engineering.
The technical scheme that layer hybrid fiber cloth used in civil engineering of the present invention adopted is: layer hybrid fiber cloth used in civil engineering of the present invention comprises fiber, the connecting line of fiber, high strength and the high-elastic mould of high-elongation, the fiber of described high strength and high-elastic mould and the fiber of described high-elongation become hybrid fiber cloth by described connecting line shuffling in one deck, the fiber of described high strength and high-elastic mould and the fiber of described high-elongation be arranged in parallel along its length, and described connecting line broad ways is provided with.
The fiber of described high-elongation adopts E glass fibre or S glass fibre or basalt fibre or aramid fiber.
The fiber of described high strength and high-elastic mould adopts carbon fiber.
The ratio that mixes between the fiber of described high strength and high-elastic mould and the fiber of described high-elongation is 2: 1～1: 3.
Civil engineering of the present invention with the technical scheme that multilayer hybrid fiber cloth adopted is: civil engineering of the present invention comprises two-layer at least layer hybrid fiber cloth used in civil engineering with multilayer hybrid fiber cloth, mix for interlayer between the described layer hybrid fiber cloth used in civil engineering of each layer, described layer hybrid fiber cloth used in civil engineering comprises the fiber of high-elongation, the fiber of high strength and high-elastic mould, connecting line, the fiber of described high strength and high-elastic mould and the fiber of described high-elongation become hybrid fiber cloth by described connecting line shuffling in one deck, the fiber of described high strength and high-elastic mould and the fiber of described high-elongation be arranged in parallel along its length, and described connecting line broad ways is provided with.
The fiber of described high-elongation adopts E glass fibre or S glass fibre or basalt fibre or aramid fiber.
The fiber of described high strength and high-elastic mould adopts carbon fiber.
The ratio that mixes between the fiber of described high strength and high-elastic mould and the fiber of described high-elongation is 2: 1～1: 3.
The described layer hybrid fiber cloth used in civil engineering of each layer to mix ratio identical;
Further, mix for lamination between the described layer hybrid fiber cloth used in civil engineering of each layer or staggered floor mixes.
Perhaps, the described layer hybrid fiber cloth used in civil engineering of each layer mixes the ratio difference.
The invention has the beneficial effects as follows: because layer hybrid fiber cloth used in civil engineering of the present invention comprises the fiber of high-elongation, the fiber of high strength and high-elastic mould, connecting line, the fiber of described high strength and high-elastic mould and the fiber of described high-elongation become hybrid fiber cloth by described connecting line shuffling in one deck, the fiber of described high strength and high-elastic mould and the fiber of described high-elongation be arranged in parallel along its length, described connecting line broad ways is provided with, the present invention adopts the fiber cloth reinforced building structure technology of interlaminar hybrid, the fiber (as glass fibre or basalt fibre) that high-elongation (fracture elongation height) and price is low becomes hybrid fiber cloth with fiber (as the carbon fiber) shuffling of high strength and high-elastic mould in one deck, under the prerequisite that guarantees enough strength and stiffness, effectively improve fibre property performance rate and be reinforced member ductility thereby reach, can significantly reduce cost, and rationally flexibly, convenient construction is the inexpensive cloth that is applicable to that civil engineering is reinforced; The present invention can select fiber according to mixed targets and fibre bundle characteristic (thickness, with structure glue wettability and suitability, mechanical property), mixes proportioning and arrangement design then; CF performance efficient among the HFRP after mixing is significantly improved, and can produce the characteristic that this single FRP that repeatedly ruptures does not have when suitable when mixing ratio, and the HFRP after mixing is higher than the cost performance of single FRP, more can rationally satisfy various requirement neatly, so the present invention is under the prerequisite of rigidity that guarantees to be reinforced member and intensity, can improve fiber efficient effectively and be reinforced the ductility of member, and can significantly reduce cost and use cost.
Description of drawings
Fig. 1 is stress-strain (the curved line relation schematic diagram of σ-ε) of various FRP;
Fig. 2 is the Facad structure schematic diagram that the fiber of the embodiment of the invention one is arranged and mated at interlaminar hybrid;
Fig. 3 is the section structure schematic diagram of P-P shown in Figure 2;
Fig. 4 is the section structure schematic diagram that the fiber of the embodiment of the invention two is arranged and mated at interlaminar hybrid;
Fig. 5 is the section structure schematic diagram that the fiber of the embodiment of the invention three is arranged and mated at interlaminar hybrid;
Fig. 6 is the section structure schematic diagram that the fiber of the embodiment of the invention four is arranged and mated at interlaminar hybrid;
Fig. 7 is the section structure schematic diagram that the embodiment of the invention five adopts multi-layer fiber and arranges and mate at interlaminar hybrid;
Fig. 8 is the section structure schematic diagram that the embodiment of the invention six adopts multi-layer fiber and arranges and mate at interlaminar hybrid;
Fig. 9 is the section structure schematic diagram that the embodiment of the invention seven adopts multi-layer fiber and arranges and mate at interlaminar hybrid;
Figure 10 is the section structure schematic diagram that the embodiment of the invention eight adopts multi-layer fiber and arranges and mate at interlaminar hybrid;
Figure 11 is that various HFRP adopt the identical stress-strain that mixes ratio and corresponding single FRP (the curved line relation schematic diagram of σ-ε);
Figure 12 is that a kind of HFRP adopts the different stress-strains that mix ratio and corresponding single FRP (the curved line relation schematic diagram of σ-ε);
Figure 13 is according to the stress-strain of Figure 12 readjusting and simplifying (the curved line relation schematic diagram of σ-ε).
The specific embodiment
Layer hybrid fiber cloth used in civil engineering of the present invention comprises the fiber 1 of high-elongation, the fiber 2 of high strength and high-elastic mould, connecting line 3, the fiber 2 of described high strength and high-elastic mould becomes hybrid fiber cloth with the fiber 1 of described high-elongation by described connecting line 3 shufflings in one deck, the fiber 2 of described high strength and high-elastic mould be arranged in parallel along its length with the fiber 1 of described high-elongation, described connecting line 3 broad ways settings, described connecting line 3 also can adopt the oblique setting in the width setting that can intersect vertically with the fiber 1 of the fiber 2 of described high strength and high-elastic mould and described high-elongation.Corresponding have following four aspects:
(1) performance requirement:, at first select the fiber 2 of carbon fiber as described high strength and high-elastic mould for guaranteeing to be reinforced the rigidity and the intensity of member; For thereby the elongation at break that improves CFRP improves the ductility that is reinforced member, then should adopt the fiber 1 of high-elongation, its elongation at break should be higher by 50～200% than carbon fiber, can select E glass fibre (EGF) or S glass fibre (SGF) or basalt fibre (BF) or aramid fiber (KF) for use; Mix effect in order to improve in addition, the fiber 2 of described high strength and high-elastic mould is the bigger the better with the performance difference of the fiber 1 of described high-elongation, help guaranteeing after fiber 2 (CF) fracture of described high strength of part and high-elastic mould, the fiber 1 of described high-elongation still can effectively carry, final fracture elongation and the ductility that improves FRP, even can reach the effect that repeatedly ruptures.
(2) price request: because the CF that at present most actual reinforcing engineering adopts still need rely on import, and is raw material with the oil, not only price is very high, and is subjected to bigger constraint; On the contrary, homemade GF reaches advanced world standards, and is raw material with quartz sand, not only cheap (only be CF 1/9～1/3), and environmental protection and energy saving, BF also has certain price advantage (be about CF 1/4), comparatively speaking, its cofibre price and carbon fiber differential advantage are not very obviously.So, select for use EGF or SGF or BF and CF to mix and meet requirement cheaply, and can meet " low-carbon economy " and " energy-saving and emission-reduction " state basic policy.
(3) interlaminar hybrid and coupling thereof: mix and can take in the layer and the interlayer dual mode, the decentralization in the layer is higher comparatively speaking, should be able to reach mutually more obviously to mix effect, better effects if.So the present invention adopts the interlaminar hybrid pattern, with two kinds of alongst parallel interlaminar hybrid unidirectional fibre cloth that are woven into of unidirectional fibre.Carry out selection according to different reinforcing needs (aspects such as intensity, rigidity and price), and mix braiding with different arrangement modes in different materials, the different ratios that mixes.
(4) interlaminar hybrid cloth workability: because interlayer mixes the two-layer fiber of minimum needs and mixes, at least three layers just can reach effect symmetrically and evenly, but the situation that one deck and two-layer FRP reinforce in the concrete structure reinforcement is more.So adopting interlayer to mix can only be the form that one deck carbon fiber adds layer of glass, also needs to overlap separately when the cloth of two-layer unlike material is pasted in addition, also can influence the strengthening with external bonding effect except waste material.So, filament is compiled into the interlaminar hybrid cloth, one deck cloth can realize the effect that mixes, integral rigidity and intensity are more even, have increased design freedom, and the workman constructs and can reduce overlap joint, improve construction feasibility, efficient and effect greatly.
Below be the content of test:
One, test material
The fiber 2 of described high strength and high-elastic mould is selected one-level PAN series high strength carbon fiber (C) commonly used for use, glass fibre adopts E glass fibre and S glass fibre respectively in the fiber 1 of described high-elongation, the basalt fibre that basalt fibre adopts 13 comparatively cheap μ m silk manufacturings to form.These single fibers all are unidirectional continuous tows, and are woven into the interlaminar hybrid cloth of unidirectional single cloth or different proportion and combination with it.Glue adopts fibre structure glue commonly used to get final product.
The above-mentioned material performance is listed as follows:
Table 1: single fibrous material performance table
Above-mentioned high ductility cloth is according to present code requirement and market situation, is index with high ductility and low price mainly, and different materials is selected in contrast for use, to reach inexpensive effect.
Two, the selection of interlaminar hybrid cloth, coupling and establishment
In the hybrid structure, the factor of manufacturing technique can not be ignored.For the fabric product that mixes in the face, whether having the technology matching between the fiber not of the same race and how distributing uniformly is exactly the problem that needs emphasis to consider.No matter be the fiber 2 of high strength and high-elastic mould and the fiber 1 of high-elongation, there are a lot of alternative specification kinds in the capital, comprise different line densities, different sizing agent kind and content, the fiber dimensious that can not choose reasonable be complementary, will have a strong impact on the compound of hybrid fabric and resin matrix, thereby influence mixes the performance of effect; In addition, for a fiber hybrid ratio that designs, wherein arranging of various fibers also is to have multiple possible technology implementation, and different modes has certain influence for the final effect that mixes.Two kinds of different fibrages in identical one deck, except the poor mechanical property of considering two kinds of fibers, must be considered the hybrid fiber cloth molding effect.Molding effect comprises thickness, density, straight degree and inhales colloidality energy etc.
(1) weaving requires: former single fibrous material should be selected some matured products, the knitting property of corresponding single cloth is good, good forming effect, all fine with the wettability and the suitability of epoxy resin structural adhesive, the manufacturability of the interlaminar hybrid cloth after guaranteeing to weave with this.Then, select two kinds of close fibers, i.e. 200g/m of grade (thickness)
2CF (0.111mm is thick) joins 200g/m
2GF or BF (0.118mm is thick), 300g/m
2CF (0.167mm is thick) joins 300g/m
2GF or BF (0.174mm is thick) can guarantee that shuffling is even at a layer thickness side by side, and be straight along sliding, is uneven or problem such as lamination void defects otherwise exist easily.Facts have proved that only need adjust a little existing unidirectional weaving and can knit out various interlaminar hybrid cloth, its technological effect is good.
(2) interlaminar hybrid mode and ratio: according to the principle of assorted fibre, fiber 2 (carbon fiber) ratio of described high strength and high-elastic mould is high more, and the intensity of hybrid fiber cloth and bullet mould are big more, but ductility is low more, and price is high more; Fiber 1 ratio of cheap described high-elongation is high more then opposite.Carry out interlaminar hybrid than design and layout according to many-sided factors such as instructions for use, fibre property and price etc., because development target of the present invention is to improve the ductility of CFRP and reduce material cost, and wish to obtain the repeatedly hybrid fiber cloth of fracture, the ratio that mixes between the fiber 2 of described high strength and high-elastic mould and the fiber 1 of described high-elongation mainly contains following four kinds: 2: 1 or 1: 1 or 1: 2 or 1: 3.
(3) interlayer shop layer promiscuous mode: the interlaminar hybrid cloth more has different combinations except having different proportion and the layout during multilayer build-up in every layer, the characteristic of various combination has certain difference.From assorted fibre rupture failure angle analysis, the elongation at break that improve carbon fiber just should improve the decentralization of carbon fiber in assorted fibre, increases the contact interface of CF and GF, improves GF as far as possible crack or the defective that CF occurs behind the initial collapse retrained.As Fig. 7, shown in Figure 8, reflected that identical interlaminar hybrid cloth realizes different structures by the dislocation laying, can effectively improve dispersed the raising and mix effect; As Fig. 9, shown in Figure 10, reflected in the layer that adopts different proportion that a cloth carries out interlayer and mix, can realize multiple proportioning and version.So, can adopt the interlaminar hybrid cloth of multiple different proportion to carry out interlayer and mix, its performance is more various, and design can be carried out different collocation according to instructions for use, and the material design concept is outstanding, and it is more obvious to mix effect.
Three, FRP The performance test results
Mix tensile property and the cost performance that proportioning and mode weave the hybrid fiber cloth that forms in order to obtain different fibers, difference, research mixes effect and principle, carries out FRP tensile property contrast test.Produce several different FRP by the material type in the table 2, C, B, SG and EG represent single FRP separately respectively in the table, and the HFRP that on behalf of the corresponding proportion hybrid fiber cloth, 1C: 1SG be made into, all the other representation classes are together.Test specimen all adopts 4 layers of cloth, and dislocation is laid to improve dispersiveness and uniformity between each layer.Make test specimen, every kind of FRP5 test specimen by relevant national standard.
Table 2: different fibrous materials and mix the performance table
Treat to carry out tension test after test specimen reaches intensity, divide following two kinds of situations to study:
(1) different materials, same ratio hybrid ratio are
Three kinds of high ductility fibers of difference and carbon fiber carry out interlaminar hybrid with 1: 1 ratio and compare test, result of the test such as table 2 and shown in Figure 11.Result of the test shows, the fracture process of single FRP and HFRP and shape have certain difference: sound and other signs of not having the fracture of fiber microcosmic before the single FRP fracture substantially, rupture when reaching peak load suddenly, and send the loud noise of " the sound of sth. throbbing or bursting ", mix HFRP then hear near peak load about 80% " crack " microscopic fibers fracture sound, whiting appears in the test specimen surface, but the phenomenon that does not have obviously fracture and load to descend, two kinds of fibers rupture simultaneously when reaching peak load.Show by experimental phenomena, carbon fiber begins to rupture when reaching its limiting strain, but because the separation and the constraint of high ductility fiber are arranged, effectively avoided local fracture moment to develop into whole fracture, make the whole fracture elongation of its carbon fiber obtain 14%～31% raising in HFRP, this has proved that high ductility fiber and carbon fiber hybrid can improve the utilization rate of carbon fiber effectively.In addition as seen from the figure, the elastic modelling quantity of assorted fibre is between two kinds of single fibers, and carbon fiber has obviously improved the elastic modelling quantity of high ductility fiber, has guaranteed that effectively assorted fibre has enough intensity.
(2) same material, different proportion hybrid ratio are
In contrast test (1), two kinds of fibers among the HFRP rupture simultaneously, and this has shown that carbon fiber when fracture, another kind of high ductility fiber can not bear the post-rift unloading of carbon fiber and percussion thereof and fracture simultaneously.In order further to reach the effect that significantly mixes effect and repeatedly rupture, adopt high strength, high fracture elongation and a high proportion of SGF and CF to mix, compared with 1: 1,1: 2 and 1: 3 respectively, for asking when carbon fiber ruptures, remaining SGF can bear its load that unloads and percussion.
In this experiment, as shown in figure 12,1C: 2SG and 1C: the carbon fiber elder generation local fracture among the 3SG, flashy load generation bust, high ductility fiber can not be born fracture load that carbon fiber unloads fully, but can continue diffusion and resist its impact in operative constraint carbon fiber crack, continues carrying with remaining carbon fiber then, load still can improve, in a bearing capacity scope through final fracture just after the fracture repeatedly.When this shows carbon fiber content less than certain value, the repeatedly situation of fracture can take place.This characteristic that takes place repeatedly to rupture under the situation that keeps certain effectively bearing capacity is that single FRP is unexistent.
According to result of the test, we with the strain-stress relation readjusting and simplifying as shown in figure 13, wherein once the ultimate strength of the test specimen of fracture and distortion all are maximums, and 1C: 2SG and 1C: 3SG continues carrying after being offloaded to 2/3 ultimate load after the fracture for the first time, the basic rising situation that keeps, multistage fracture takes place in back segment.Though back segment is not considered when intensity is calculated, it still helps improving the anti-earthquake ductility and the reliability of ruggedized construction, so consider that from active strength and effective strain angle back segment still can be considered effective working stage.
Above-mentioned contrast test and analysis result show:
(1) single fiber pluses and minuses are obvious: though carbon fiber intensity and bullet mould height, percentage elongation low price height is so its cost performance is minimum in all fibres; And high ductility fiber, mainly obtain higher (calculating) cost performance because of its cheap price, but, be difficult to satisfy actual requirement, particularly BF and EGF because its intensity and bullet mould are low excessively, its intensity is less than 1800MPa, be difficult to satisfy actual engine request, be difficult to apply, and SGF have higher percentage elongation and intensity, cost performance is comparatively moderate, but still unsuitable single use.
(2) high ductility fiber can effectively improve the elongation at break that hangs down ductility fiber (CF) among the HFRP, promptly improves the efficient of low ductility fiber.When the proportioning of two kinds of fibers reaches certain proportion (carbon fiber minimum volume rate), also possesses the repeatedly fracture characteristics that single FRP does not have, as 1C: 2SG and 1C: 3SG.
(3) the various cost performances of HFRP all are higher than single CFRP far away, improve 25～55% as the intensive properties price ratio, play the mould cost performance and improve 1～28%, and ductility degree of safety cost performance improves 25～93%, and the ductility cost performance improves 11～58%.For the important reinforcing situation that strength and stiffness are had relatively high expectations, 2C: 1SG or 1C: 1SG are used in suggestion; For generally requiring situation, 1C: 1EG, 1C: 1B or 1C: 1SG are used in suggestion; For the ductility situation of having relatively high expectations, 1C: 1SG or 1C: 2SG are used in suggestion.HFRP more can rationally satisfy various requirement neatly than single FRP.
Embodiment one:
As Fig. 2, shown in Figure 3, present embodiment is a layer hybrid fiber cloth used in civil engineering, and the ratio that mixes between the fiber 2 of described high strength and high-elastic mould and the fiber 1 of described high-elongation is 1: 1.
Embodiment two:
As shown in Figure 4, present embodiment is a layer hybrid fiber cloth used in civil engineering, and the ratio that mixes between the fiber 2 of described high strength and high-elastic mould and the fiber 1 of described high-elongation is 1: 2.
Embodiment three:
As shown in Figure 5, present embodiment is a layer hybrid fiber cloth used in civil engineering, and the ratio that mixes between the fiber 2 of described high strength and high-elastic mould and the fiber 1 of described high-elongation is 1: 3.
Embodiment four:
As shown in Figure 6, present embodiment is a layer hybrid fiber cloth used in civil engineering, and the ratio that mixes between the fiber 2 of described high strength and high-elastic mould and the fiber 1 of described high-elongation is 2: 1.
Embodiment five:
As shown in Figure 7, present embodiment is the civil engineering multilayer hybrid fiber cloth, comprise three layers of layer hybrid fiber cloth used in civil engineering, mix for interlayer between the described layer hybrid fiber cloth used in civil engineering of each layer, described layer hybrid fiber cloth used in civil engineering comprises the fiber 1 of high-elongation, the fiber 2 of high strength and high-elastic mould, connecting line 3, the fiber 2 of described high strength and high-elastic mould becomes hybrid fiber cloth with the fiber 1 of described high-elongation by described connecting line 3 shufflings in one deck, the fiber 2 of described high strength and high-elastic mould be arranged in parallel along its length with the fiber 1 of described high-elongation, described connecting line 3 broad ways settings, the described layer hybrid fiber cloth used in civil engineering of each layer to mix ratio identical, be that the ratio that mixes between the fiber 1 of the fiber 2 of described high strength and high-elastic mould and described high-elongation is 1: 1, for lamination mixes, promptly the fiber 2 of described high strength between the described layer hybrid fiber cloth used in civil engineering of different layers and high-elastic mould is overlapping up and down separately respectively with the fiber 1 of described high-elongation between the described layer hybrid fiber cloth used in civil engineering of each layer.Certainly, civil engineering shown in more than also can include only two-layer layer hybrid fiber cloth used in civil engineering or more multi-layered with multilayer hybrid fiber cloth.
Embodiment six:
As shown in Figure 8, the difference of present embodiment and embodiment five is: in the present embodiment, for staggered floor mixes, promptly the fiber 2 of described high strength between the described layer hybrid fiber cloth used in civil engineering of adjacent layer and high-elastic mould misplaces up and down respectively separately with the fiber 1 of described high-elongation between the described layer hybrid fiber cloth used in civil engineering of each layer.All the other features of present embodiment are with embodiment five.
Embodiment seven:
As shown in Figure 9, the difference of present embodiment and embodiment five is: in the present embodiment, the described layer hybrid fiber cloth used in civil engineering of each layer mix the ratio difference, the ratio that mixes between the fiber 2 of the superiors and undermost described high strength and high-elastic mould and the fiber 1 of described high-elongation is 1: 2, the ratio that mixes between the fiber 1 of the described high strength of middle one deck and the fiber 2 of high-elastic mould and described high-elongation is 2: 1, the position is identical between the fiber 2 of the superiors and undermost described high strength and high-elastic mould and the fiber 1 of described high-elongation, shifts to install between the described layer hybrid fiber cloth used in civil engineering of middle one deck and the superiors and the orlop.All the other features of present embodiment are with embodiment five.
Embodiment eight:
As shown in figure 10, the difference of present embodiment and embodiment seven is: in the present embodiment, also staggering in the position between the fiber 2 of the superiors and undermost described high strength and high-elastic mould and the fiber 1 of described high-elongation, promptly all shifts to install between three layers.All the other features of present embodiment are with embodiment seven.
The present invention adopts the method for interlaminar hybrid, with the fiber cloth reinforced building structure technology of interlaminar hybrid, the fiber (as glass fibre or basalt fibre) that high-elongation (fracture elongation height) and price is low becomes hybrid fiber cloth with fiber (as the carbon fiber) shuffling of high strength and high-elastic mould in one deck, under the prerequisite that guarantees enough strength and stiffness, effectively improve fibre property performance rate and be reinforced member ductility thereby reach, can significantly reduce cost, and rationally flexibly, convenient construction is the inexpensive cloth that is applicable to that civil engineering is reinforced; The present invention can select fiber according to mixed targets and fibre bundle characteristic (thickness, with structure glue wettability and suitability, mechanical property), mixes proportioning and arrangement design then; CF performance efficient among the HFRP after mixing is significantly improved, and can produce the characteristic that this single FRP that repeatedly ruptures does not have when suitable when mixing ratio, and the HFRP after mixing is higher than the cost performance of single FRP, more can rationally satisfy various requirement neatly, therefore the present invention is under the prerequisite of rigidity that guarantees to be reinforced member and intensity, can improve fiber efficient effectively and be reinforced the ductility of member, and can significantly reduce cost and use cost.
The present invention can be widely used in field of civil engineering.
Claims (9)
1. layer hybrid fiber cloth used in civil engineering, it is characterized in that: the fiber (2), the connecting line (3) that comprise fiber (1), high strength and the high-elastic mould of high-elongation, the fiber of described high strength and high-elastic mould (2) becomes hybrid fiber cloth with the fiber (1) of described high-elongation by described connecting line (3) shuffling in one deck, the fiber of described high strength and high-elastic mould (2) be arranged described connecting line (3) broad ways setting in parallel along its length with the fiber (1) of described high-elongation.
2. layer hybrid fiber cloth used in civil engineering according to claim 1 is characterized in that: the fiber of described high-elongation (1) adopts E glass fibre or S glass fibre or basalt fibre or aramid fiber.
3. layer hybrid fiber cloth used in civil engineering according to claim 1 is characterized in that: the fiber of described high strength and high-elastic mould (2) adopts carbon fiber.
4. layer hybrid fiber cloth used in civil engineering according to claim 1 is characterized in that: the ratio that mixes between the fiber (1) of fiber of described high strength and high-elastic mould (2) and described high-elongation is 2: 1～1: 3.
5. a civil engineering multilayer hybrid fiber cloth is characterized in that: comprise any described layer hybrid fiber cloth used in civil engineering of at least two-layer claim 1～4, mix for interlayer between the described layer hybrid fiber cloth used in civil engineering of each layer.
6. civil engineering multilayer hybrid fiber cloth according to claim 5 is characterized in that: the described layer hybrid fiber cloth used in civil engineering of each layer to mix ratio identical.
7. civil engineering multilayer hybrid fiber cloth according to claim 6 is characterized in that: mix for lamination between the described layer hybrid fiber cloth used in civil engineering of each layer.
8. civil engineering multilayer hybrid fiber cloth according to claim 6 is characterized in that: mix for staggered floor between the described layer hybrid fiber cloth used in civil engineering of each layer.
9. civil engineering multilayer hybrid fiber cloth according to claim 5 is characterized in that: the described layer hybrid fiber cloth used in civil engineering of each layer mix the ratio difference.
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| CN 201010118168 CN101792954A (en) | 2010-03-04 | 2010-03-04 | In-layer hybrid fiber cloth used in civil engineering and multilayer hybrid fiber cloth |
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| CN102152582A (en) * | 2010-12-01 | 2011-08-17 | 东南大学 | Polyester basalt fiber cloth and preparation method thereof |
| CN105619950A (en) * | 2015-12-25 | 2016-06-01 | 耀奇鑫科技（深圳）有限公司 | Mixed-reinforced-fiber and alloy composite material and preparing technology thereof |
| CN107310226A (en) * | 2017-08-10 | 2017-11-03 | 中南大学 | A kind of assorted fibre plate |
| CN113665138A (en) * | 2021-07-12 | 2021-11-19 | 北京汽车研究总院有限公司 | Layering method of continuous fibers in baffle with flanging and baffle with flanging |
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Application publication date: 20100804 |