CN103603509A - Carbon fiber fabric reinforced concrete beam and reinforcing method thereof - Google Patents
Carbon fiber fabric reinforced concrete beam and reinforcing method thereof Download PDFInfo
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- CN103603509A CN103603509A CN201310663610.5A CN201310663610A CN103603509A CN 103603509 A CN103603509 A CN 103603509A CN 201310663610 A CN201310663610 A CN 201310663610A CN 103603509 A CN103603509 A CN 103603509A
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Abstract
The invention discloses a carbon fiber fabric reinforced concrete beam and a reinforcing method of the carbon fiber fabric reinforced concrete beam. The carbon fiber fabric reinforced concrete beam comprises a reinforced concrete beam, wherein the tensioned surface at the bottom of the reinforced concrete beam is provided with a carbon fiber fabric which is uniformly and integrally adhered to the tensioned surface; the two ends of the carbon fiber fabric are respectively connected with a steel plate; steel plate connecting holes are formed in each steel plate; each steel plate is connected with the two ends of the reinforced concrete beam through the steel plate connecting holes, a nut and a chemical bolt. The structure and construction are simple and convenient, and the end parts are fixed reliably, so that the tensile strength and the flexural bearing capacity of the concrete beam are effectively enhanced, the earthquake resistance of building structures as well as the repair effect and repair efficiency of damaged structures after an earthquake is raised, and the life and property safety of people are guaranteed.
Description
Technical field
The present invention relates to construction engineering technical field, particularly a kind of carbon cloth reinforced reinforced concrete beam and reinforcement means of adopting.
Background technology
Reinforced concrete beam, as basic bending component, is widely used in the various aspects of building structure.Along with passage of time, early stage reinforced concrete beam has entered the work with cracking stage, because shock resistance is ignored in the effect of the more consideration gravity loads of early stage design, so shockproof effect is poor.Once along with extending service time or macroseism occurs, will there is grievous injury in reinforced concrete beam, for safety and lives and properties, consider, reinforced concrete beam is carried out to bending resistance and draw that to reinforce be necessary.
In view of China most areas is in territory, earthquake-prone region, building structure is carried out to the reparation of seismic hardening and the rear damaged structure of shake, all need advanced Reinforcement technology, to improve repairing effect and efficiency.In addition, existing large quantities of existing buildings cause original structure not meet the demands because of load increase, natural calamity, environmental attack, purposes change, design standard is upgraded and structural reliability requirement raising etc., also need in time it to be reinforced.
The authoritative method of also reinforced concrete beam not being reinforced in prior art at present.Carbon cloth owing to thering is high-strength efficient, good endurance, acid and alkali-resistance salt corrosion is strong, heat-resisting and cold resistance is good and easy construction, the advantages such as reliable construction quality, become the in-problem good selection of solution prior art.
Summary of the invention
The present invention is exactly the problems referred to above that exist for solving prior art, and a kind of carbon cloth reinforced reinforced concrete beam that adopts is provided; By being fixed on chemical bolt, nut and the steel plate combination at reinforced concrete beam two ends, carbon cloth is fixed on to the curved hand-pulled noodles of reinforced concrete beam.This construction technology is easy, simple in structure, end is fixing reliable, has effectively improved the anti-bending bearing capacity of reinforced concrete beam, has improved the anti-seismic performance of building structure and repairing effect and the efficiency of the rear damaged structure of shake, has ensured people's life and property safety.
The present invention also provides a kind of reinforcement means of carbon cloth to reinforced concrete beam that adopt.
The technical scheme of technical solution problem of the present invention is:
A kind ofly adopt carbon cloth reinforced reinforced concrete beam, comprise reinforced concrete beam, the curved hand-pulled noodles in bottom of described reinforced concrete beam is provided with evenly pastes with it the carbon cloth being integrated, described carbon cloth two ends are connected with the first steel plate, the first steel plate is provided with steel plate connecting hole, and described the first steel plate is connected with reinforced concrete beam two ends by steel plate connecting hole, nut and chemical bolt.
Described carbon cloth adopts continuous strip carbon cloth, and described carbon cloth end is by being wound around, being wrapped in the first surface of steel plate, and the first steel plate length is identical with carbon cloth width.
Position near the first steel plate inner side, two ends on beam is provided with some U-shaped hoops, and U-shaped hoop lower inside contacts with carbon cloth.
Described U-shaped hoop comprises carbon cloth, and wherein the two ends of carbon cloth are wrapped in respectively on the second steel plate, and the second steel plate is provided with connecting hole, and the two sides of reinforced concrete beam are respectively equipped with U-shaped hoop fixing hole; The second steel plate is connected with chemical bolt bar by connecting hole, and the outer end of described chemical screw rod is provided with fastening nut, the second steel plate, U-shaped hoop and reinforced concrete beam is combined closely, thereby the carbon cloth of curved hand-pulled noodles is played to reinforcement effect.
The curved hand-pulled noodles in described reinforced concrete beam bottom, after polishing, repairing levelling, painting primer and structure glue are processed, is pasted with carbon cloth, and carbon cloth external surface is evenly coated with structure glue.Carbon cloth can be provided with multilayer, between adjacent each layer carbon cloth, needs coating structure glue.
After the structure glue of the superficies of described carbon cloth is dry with hand touch, at its surface uniform, spread totally, be dried river sand particle.Be convenient to reinforce finish rear to this position decoration process such as plaster.
Adopt the reinforcement means of carbon cloth to reinforced concrete beam, comprise the following steps:
1) unwrapping wire: on the curved hand-pulled noodles in reinforced concrete beam bottom, according to carbon cloth size and actual arrangement position, every side extends out the 1cm bullet line of ink marker, according to the connecting hole position of the location positioning steel concrete soffit of steel plate connecting hole.
2) U-shaped hoop chamfering: by the corner location for paste chamfering of U-shaped hoop and be polished into circular-arc.
3) curved hand-pulled noodles base treatment, carries out grinding process with angle grinding machine by the concrete surface in the line of ink marker, removes the greasy dirt of component surface, putty, and coating, floating dust etc., expose hard of concrete, blows clean stand-by with hair-dryer; In the boring of concrete connecting hole position, after boring, with hairbrush, draw hole, with hair-dryer, blow hole again; During polishing, the grinding depth of the concrete surface of steel plate permanent position, than the low 2-3mm of adjacent concrete plane; Whole process does not allow submersible.
4) steel plate is processed: on steel plate, bore connecting hole, connecting hole adopts circular hole, after steel plate is dry, uses electronic brush cleaning.
5) repair levelling: the hole, hole occurring on concrete surface after grinding process, depression are filled and led up with repair sheets; Darker place, hole, hole, adopts high-mark cement slurry to fill and lead up.
6) chemical bolt end is fixed: by putting into concrete hole with the supporting pencil of chemical bolt, then chemical screw rod is implanted in concrete hole with electric drill.
7) be coated with primer and structure glue: primer, in predetermined proportioning ratio mixing, is brushed on concrete surface with hairbrush; Structure glue, in predetermined proportioning ratio mixing, after the dry to touch of primer surface, is brushed on primer with hairbrush;
8) fixed carbon cloth one end: after one end of carbon cloth is wound around around the first steel plate, the first steel plate that is wound around carbon fiber is arranged on two chemical bolt bars by connecting hole, by at the uniform velocity fully tightening on screw rod with the supporting nut of chemical screw rod, steel disc, carbon cloth and concrete are combined closely.
9) the fixed carbon cloth other end: carbon cloth is manually tightened, under the prerequisite of tightening in assurance, the reserved carbon cloth of the other end is wrapped on the first steel plate, according to the method for step 8), nut, carbon cloth, steel plate and concrete are combined closely.
10) carbon cloth is pasted: carbon cloth is gently overlayed to the position of pasting in needs with rubber pad, adopt cylinder along repeatedly roll extrusion of machine direction, get rid of bubble, make glue fully soak into carbon cloth, then in the even brushing structure glue of carbon fiber surface, with cylinder, along the repeatedly roll extrusion of carbon fiber direction, make surperficial glue fully soak into carbon cloth; If carbon cloth multilayer is pasted, repeat this step.
11) U-shaped hoop one end is fixed: in the two sides of concrete beam, bore respectively U-shaped hoop fixing hole, by putting into U-shaped hoop fixing hole with the supporting pencil of chemical bolt, then with electric drill, chemical screw rod is implanted in U-shaped hoop fixing hole; One end of the U-shaped hoop that carbon cloth is made is wound around around the second steel plate, then the second steel plate being wound around after carbon cloth is arranged on two chemical bolt bars by connecting hole, by at the uniform velocity fully tightening on screw rod with the supporting nut of chemical screw rod, the carbon cloth of the second steel plate, U-shaped hoop and concrete are combined closely.
12) the U-shaped hoop other end is fixed: the carbon cloth of making U-shaped hoop is manually tightened, guaranteeing under the prerequisite of tightening, the carbon fiber U-shaped hoop of the other end is wrapped on the second steel plate, according to the method for step 11), nut, carbon fiber U-shaped hoop, steel plate and concrete is combined closely.
13) U-shaped hoop is pasted: the U-shaped hoop that carbon cloth is made gently overlays the position of pasting in needs with rubber pad, adopts the method for step 10) by carbon cloth firm pasting.
14) carbon cloth outermost gluing: in the even brushing structure glue of outermost of carbon cloth, along the repeatedly roll extrusion of carbon fiber direction, make structure glue fully soak into carbon cloth with cylinder.
Step 14 completes, after carbon cloth surface texture glue dry to touch, clean, dry river sand particle is spread on surface; After the sand fixation of river, surperficial Puttying, brush emulsion paint.
Beneficial effect of the present invention:
1, the present invention is fixed on the curved hand-pulled noodles of reinforced concrete beam by being fixed on chemical bolt, nut and the steel plate combination at reinforced concrete beam two ends by carbon cloth, structure and easy construction, end is fixing reliable, effectively improved the flexural strength of reinforced concrete beam, improve the anti-seismic performance of building structure and repairing effect and the efficiency of the rear damaged structure of shake, ensured people's life and property safety.
2, structure of the present invention and construct simple, with low costly, adopts the method fixed carbon cloth end of chemical bolt anchoring, efficiently solves the end sticking with glue and peels off problem, has improved the consolidation effect of carbon cloth.
3, the present invention adopts structure glue affixing carbon fabric to guarantee that carbon cloth and concrete beam mid portion bonding is smooth, closely knit, gives full play to the good advantage of tension characteristic of carbon cloth, has improved the anti-bending bearing capacity of reinforced concrete beam.
4, compact conformation of the present invention, does not take the usage space that is reinforced building.
5, clean, dry river sand particle is spread on the surface after carbon cloth surface texture glue dry to touch, can play fireproof effect; In surperficial Puttying or brush emulsion paint, surface aesthetic, wear-resisting, resistance to wiping.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that carbon cloth is reserved and carbon cloth is wound around steel disc schematic diagram;
Fig. 3 the first steel plate, the second steel plate structure schematic diagram;
Fig. 4 is carbon cloth structural representation;
Fig. 5 chemical bolt schematic detail view;
In figure, 1, U-shaped hoop; 2, reinforced concrete beam; 3, carbon cloth; 4, the first steel plate; 5, nut; 6, chemical bolt; 7, reinforced concrete post; 8, steel plate connecting hole; 9, the second steel plate.
The specific embodiment
In order to understand better the present invention, below in conjunction with accompanying drawing, explain in detail embodiments of the present invention.
In conjunction with Fig. 1 to Fig. 5, adopt carbon cloth reinforced reinforced concrete beam, comprise reinforced concrete beam 2, reinforced concrete beam 2 is connected with the reinforced concrete post 7 at two ends, the curved hand-pulled noodles in bottom of described reinforced concrete beam 2 is provided with evenly pastes with it the carbon cloth 3 being integrated, described carbon cloth 3 two ends are connected with the first steel plate 4, and steel plate 4 is provided with steel plate connecting hole 8, and described steel plate 4 is connected with the two ends of reinforced concrete beam 2 by steel plate connecting hole 8, nut 5 and chemical bolt 6.
Described carbon cloth adopts continuous strip carbon cloth, and the end of described carbon cloth is by being wound around, making carbon cloth be wrapped in surface of steel plate, and steel plate 4 length are identical with carbon cloth 3 width, and carbon cloth 3 evenly sticks on the curved hand-pulled noodles of beam.The two ends of carbon cloth are preset with for the length in reserve being wound around, and length in reserve is 3 times of steel plate 4 width.
On the reinforced concrete beam of inner side between the steel plate of close two ends, be respectively equipped with some U-shaped hoops 1, U-shaped hoop 1 lower inside contacts with carbon cloth.
Described U-shaped hoop 1 comprises carbon cloth, wherein the two ends of carbon cloth are wrapped in respectively on the second steel plate 9, the second steel plate is provided with connecting hole, the two sides of concrete beam are respectively equipped with U-shaped hoop fixing hole, in U-shaped hoop fixing hole, put into the pencil supporting with chemical bolt, chemical screw rod is connected with U-shaped hoop fixing hole; The second steel plate being wound around after carbon cloth is connected with two chemical bolt bars by connecting hole, outer end at chemical screw rod is provided with fastening nut, fastening nut is at the uniform velocity fully tightened on screw rod, and the carbon cloth of the second steel plate, U-shaped hoop and concrete and U-shaped hoop 1 bottom and the carbon cloth of reinforced concrete beam 2 bottoms can be combined closely.Described the first steel plate, the second steel plate can adopt the identical and structure that appearance and size is different of bolt hole size.
The curved hand-pulled noodles in described bottom is pasted with carbon cloth after polishing, repairing levelling, painting primer and structure glue, and carbon cloth external surface is evenly coated with structure glue.During polishing, the grinding depth of the concrete surface of steel plate permanent position, than the low 2-3mm of adjacent concrete plane; Whole process does not allow submersible.
Carbon cloth is provided with multilayer, between adjacent each layer carbon cloth, needs coating structure glue.
After the structure glue dry to touch on outermost layer carbon cloth surface, at its surface uniform, spread totally, be dried river sand particle.
Adopt carbon cloth to reinforced concrete beam reinforcement means, comprise the following steps:
Unwrapping wire: on the curved hand-pulled noodles in reinforced concrete beam bottom, according to carbon cloth size and actual arrangement position, every side extends out the 1cm bullet line of ink marker, according to the connecting hole position of the location positioning steel concrete soffit of steel plate connecting hole.
U-shaped hoop chamfering: by the corner location for paste chamfering of U-shaped hoop and be polished into circular-arcly, circular arc radius of curvature should not be less than 20mm.
Curved hand-pulled noodles base treatment: with angle grinding machine, the concrete surface in the line of ink marker is carried out to grinding process, the greasy dirt of removing component surface, putty, coating, floating dust etc., expose hard of concrete, blows clean stand-by with hair-dryer; In the boring of concrete connecting hole position, after boring, with hairbrush, draw hole, with hair-dryer, blow hole again, 3 times so repeatedly; During polishing, the grinding depth of the concrete surface of steel plate permanent position, than the low 2-3mm of adjacent concrete plane, cleans out and keeps dry with dust catcher.Fixed point boring, first draws hole with hairbrush, then hair-dryer blows hole, and 3 times so repeatedly, the on-the-spot place that does not allow submersible, needs to adopt dust catcher cleaning buffed surface.
Steel plate is processed: on steel plate, bore connecting hole, connecting hole adopts circular hole, after steel plate is dry, uses electronic brush cleaning, and derusting grade reaches St2 level; Circle hole radius is than the large 2mm of chemical bolt radius.
Repair levelling, the hole, hole occurring on concrete surface after grinding process, depression are filled and led up with repair sheets; Darker place, hole, hole, adopts high-mark cement slurry to fill and lead up.
Chemical bolt end is fixed: will put into concrete hole with the supporting pencil of connecting bolt, then with electric drill, chemical screw rod is implanted in concrete hole, solidify after to be onstructed through 10min-180min.
Be coated with primer and structure glue: primer, in predetermined proportioning ratio mixing, is brushed on concrete surface with hairbrush; Structure glue, in predetermined proportioning ratio mixing, is treated to primer surface dry to touch, with hairbrush, brush on primer; The effect feature of primer is that power of impregnation is strong, fine the infiltrating through in concrete of energy, the adhesion of enhancing concrete and carbon fiber.
One end of fixed carbon cloth: one end of carbon cloth is wound around after 1.5 whole circles around steel plate 4, the steel plate that is wound around carbon fiber is arranged on two chemical bolt bars by connecting hole, by at the uniform velocity fully tightening on screw rod with the supporting nut of chemical screw rod, steel disc, carbon cloth and concrete are combined closely.
Fixing other end carbon cloth: carbon cloth is manually tightened, under the prerequisite of tightening, the reserved carbon cloth of the other end is wrapped on steel plate 4 guaranteeing, according to the method for step (8), nut, carbon cloth, steel plate and concrete are combined closely.
Carbon cloth is pasted: carbon cloth is gently overlayed to the position of pasting in needs with rubber pad, adopt cylinder along repeatedly roll extrusion of machine direction, get rid of bubble, make glue fully soak into carbon cloth, then in the even brushing structure glue of carbon fiber surface, with cylinder, along the repeatedly roll extrusion of carbon fiber direction, make surperficial glue fully soak into carbon cloth; If carbon cloth multilayer is pasted, repeat this step.
U-shaped hoop one end is fixed: in the two sides of concrete beam, bore respectively U-shaped hoop fixing hole, and clear hole, by putting into U-shaped hoop fixing hole with the supporting pencil of chemical bolt, then with electric drill, chemical screw rod is implanted in U-shaped hoop fixing hole; One end of the U-shaped hoop that carbon cloth is made is wound around 1.5 whole circles around steel plate 9, then the steel plate 9 being wound around after carbon cloth is arranged on two chemical bolt bars by connecting hole, by at the uniform velocity fully tightening on screw rod with the supporting nut of chemical screw rod, the carbon cloth of the second steel plate, U-shaped hoop and concrete are combined closely;
The U-shaped hoop other end is fixed: the carbon cloth of U-shaped hoop is manually tightened, guaranteeing under the prerequisite of tightening, the carbon fiber U-shaped hoop of the other end is wrapped on the second steel plate 9, according to the method for step 11), nut, carbon fiber U-shaped hoop, steel plate and concrete is combined closely.
U-shaped hoop is pasted: the U-shaped hoop that carbon fiber is made gently overlays the position of pasting in needs with rubber pad, adopts the method for step (10) by carbon cloth firm pasting.
Carbon cloth outermost gluing: in the even brushing structure glue of outermost of carbon cloth, along the repeatedly roll extrusion of carbon fiber direction, make structure glue fully soak into carbon cloth with cylinder.
Surface scab: after surface texture glue dry to touch, clean, dry river sand particle is spread on surface.
Surface is whitewashed: after the sand fixation of river, and surperficial Puttying, brush emulsion paint.
Although by reference to the accompanying drawings the specific embodiment of invention is described above; but be not limiting the scope of the invention; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make still in protection scope of the present invention.
Claims (10)
1. one kind adopts carbon cloth reinforced reinforced concrete beam, comprise reinforced concrete beam, it is characterized in that, the curved hand-pulled noodles in bottom of described reinforced concrete beam is provided with evenly pastes with it the carbon cloth being integrated, described carbon cloth two ends are connected with the first steel plate, the first steel plate is provided with steel plate connecting hole, and described the first steel plate is connected with the two ends of reinforced concrete beam by steel plate connecting hole, nut and chemical bolt.
2. the carbon cloth reinforced reinforced concrete beam of employing as claimed in claim 1, is characterized in that: described carbon cloth adopts continuous strip carbon cloth, and the end of described carbon cloth, by being wound around, is wrapped in the first surface of steel plate.
3. the carbon cloth reinforced reinforced concrete beam of employing as claimed in claim 1, is characterized in that: on the reinforced concrete beam of inner side between the first steel plate of close two ends, be respectively equipped with some U-shaped hoops, U-shaped hoop lower inside contacts with carbon cloth.
4. the carbon cloth reinforced reinforced concrete beam of employing as claimed in claim 3, it is characterized in that: described U-shaped hoop comprises carbon cloth, wherein the two ends of carbon cloth are wrapped in respectively on the second steel plate, the second steel plate is provided with connecting hole, the two sides of concrete beam are respectively equipped with U-shaped hoop fixing hole, in U-shaped hoop fixing hole, put into the pencil supporting with chemical bolt, chemical bolt bar is connected with U-shaped hoop fixing hole; The second steel plate being wound around after carbon cloth is connected with two chemical bolt bars by connecting hole, outer end at chemical screw rod is provided with fastening nut, fastening nut is at the uniform velocity tightened on screw rod, and the second steel plate, U-shaped hoop and concrete and the carbon cloth of U-shaped hoop bottom and the carbon cloth of reinforced concrete beam bottom are combined closely.
5. the carbon cloth reinforced reinforced concrete beam of employing as claimed in claim 1, it is characterized in that: the curved hand-pulled noodles in described steel concrete bottom is pasted with carbon cloth after polishing, repairing levelling, painting primer and structure glue, and carbon cloth external surface is evenly coated with structure glue.
6. the carbon cloth reinforced reinforced concrete beam of employing as claimed in claim 1, is characterized in that: if described carbon cloth is provided with multilayer, and coating structure glue between adjacent each layer carbon cloth.
7. the carbon cloth reinforced reinforced concrete beam of employing as described in claim 5 or 6, is characterized in that: after the structure glue of the superficies of described carbon cloth is dry with hand touch, spread totally, be dried river sand particle at its surface uniform.
8. if claim 1 is to a method that adopts carbon cloth to reinforce reinforced concrete beam as described in claim 7, it is characterized in that, comprise the following steps:
1) unwrapping wire: on the curved hand-pulled noodles in reinforced concrete beam bottom, according to carbon cloth size and actual arrangement position, every side extends out the 1cm bullet line of ink marker, according to the connecting hole position of the location positioning steel concrete soffit of steel plate connecting hole;
2) U-shaped hoop chamfering: by the corner location for paste chamfering of U-shaped hoop and be polished into circular-arc;
3) curved hand-pulled noodles base treatment, carries out grinding process by the concrete surface in the line of ink marker, removes greasy dirt, putty, coating, the floating dust of component surface, exposes hard of concrete, blows clean stand-by with hair-dryer; In the boring of concrete connecting hole position, after boring, with hairbrush, draw hole, with hair-dryer, blow hole again;
4) steel plate is processed: on steel plate, bore connecting hole, connecting hole adopts circular hole, rust cleaning after steel plate is dry;
5) repair levelling: the hole, hole occurring on concrete surface after grinding process, depression are filled and led up with repair sheets; Darker place, hole, hole, adopts high-mark cement slurry to fill and lead up;
6) chemical bolt end is fixed: will put into concrete hole with the supporting pencil of chemical bolt, then chemical screw rod is implanted in concrete hole;
7) be coated with primer and structure glue: by primer in predetermined proportioning ratio mixing, be coated on concrete surface; By structure glue in predetermined proportioning ratio mixing, after primer dry tack free, be coated on primer;
8) fixed carbon cloth one end: after one end of carbon cloth is wound around around the first steel plate, the first steel plate that is wound around carbon fiber is arranged on two chemical bolt bars by connecting hole, by at the uniform velocity tightening on screw rod with the supporting nut of chemical screw rod, steel disc, carbon cloth and concrete are combined closely;
9) the fixed carbon cloth other end: carbon cloth is manually tightened, under the prerequisite of tightening in assurance, the reserved carbon cloth of the other end is wrapped on the first steel plate, according to the method for step 8), nut, carbon cloth, steel plate and concrete are combined closely;
10) carbon cloth is pasted: carbon cloth is gently overlayed to the position of pasting in needs with rubber pad, adopt cylinder along repeatedly roll extrusion of machine direction, eliminating bubble, make glue fully soak into carbon cloth, then in the even brushing structure glue of carbon fiber surface, with cylinder, along the repeatedly roll extrusion of carbon fiber direction, make glue fully soak into carbon cloth; If carbon cloth multilayer is pasted, repeat this step;
11) U-shaped hoop one end is fixed: in the two sides of concrete beam, bore respectively U-shaped hoop fixing hole clear hole, by putting into U-shaped hoop fixing hole with the supporting pencil of chemical bolt, then chemical screw rod is implanted in U-shaped hoop fixing hole; One end of the U-shaped hoop that carbon cloth is made is wound around around the second steel plate, then the second steel plate being wound around after carbon cloth is arranged on two chemical bolt bars by connecting hole, by at the uniform velocity fully tightening on screw rod with the supporting nut of chemical screw rod, the carbon cloth of the second steel plate, U-shaped hoop and concrete are combined closely;
12) the U-shaped hoop other end is fixed: the carbon cloth of making U-shaped hoop is manually tightened, guaranteeing under the prerequisite of tightening, the carbon fiber U-shaped hoop of the other end being wrapped on the second steel plate, according to the method for step 11), nut, carbon fiber U-shaped hoop, steel plate and concrete are combined closely;
13) U-shaped hoop is pasted: the U-shaped hoop that carbon cloth is made gently overlays the position of pasting in needs with rubber pad, adopts the method for step 10) by carbon cloth firm pasting;
14) carbon cloth outermost gluing: in the even brushing structure glue of outermost of carbon cloth, along the repeatedly roll extrusion of carbon fiber direction, make structure glue fully soak into carbon cloth with cylinder.
9. the method that adopts as claimed in claim 8 carbon cloth to reinforce reinforced concrete beam, is characterized in that, described step 14 completes, after carbon cloth surface texture glue dry to touch, and clean, dry river sand particle is spread on surface; After the sand fixation of river, surperficial Puttying, brush emulsion paint.
10. the method that adopts as claimed in claim 8 carbon cloth to reinforce reinforced concrete beam, is characterized in that: during polishing, the grinding depth of the concrete surface of steel plate permanent position, than the low 2-3mm of adjacent concrete plane.
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| CN103912133A (en) * | 2014-03-19 | 2014-07-09 | 华北水利水电大学 | Lateral tension prestressing carbon fiber sheet reinforcing method for frame beam |
| CN104895345A (en) * | 2015-06-07 | 2015-09-09 | 长安大学 | Building continuous-collapse-resistant reinforcing system and method based on FRP cloth materials |
| CN106120688A (en) * | 2016-08-15 | 2016-11-16 | 钦州学院 | With carbon cloth reinforced reinforced concrete structures |
| CN106284386A (en) * | 2016-10-21 | 2017-01-04 | 中国地质科学院探矿工艺研究所 | Carbon fiber reinforced lattice beam structure and method |
| CN106703435A (en) * | 2017-02-27 | 2017-05-24 | 兰州理工大学 | Method of using combination of prestressed steel wires and carbon fiber cloth for reinforcing concrete beams |
| CN106703436A (en) * | 2017-03-13 | 2017-05-24 | 钦州学院 | Carbon fiber sheet strengthened concrete structure |
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| CN110514496A (en) * | 2019-09-02 | 2019-11-29 | 卡本科技集团股份有限公司 | A kind of anchorage experiment method of carbon fiber mesh reinforced concrete beam end |
| CN113863707A (en) * | 2021-10-08 | 2021-12-31 | 合肥双诺建筑结构工程有限公司 | Reinforced concrete beam reinforced by carbon fiber cloth and reinforcing method |
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