CN1256345A - Prestress reinforced construction method and special equipment with carbon fiber cloth - Google Patents
Prestress reinforced construction method and special equipment with carbon fiber cloth Download PDFInfo
- Publication number
- CN1256345A CN1256345A CN 99120617 CN99120617A CN1256345A CN 1256345 A CN1256345 A CN 1256345A CN 99120617 CN99120617 CN 99120617 CN 99120617 A CN99120617 A CN 99120617A CN 1256345 A CN1256345 A CN 1256345A
- Authority
- CN
- China
- Prior art keywords
- carbon cloth
- fixed
- stretch
- reinforced
- angle steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The present invention relates to the reinforcing construction of building structure. After the surface treatment of building structure part to be reinforced and the carbon fiber cloth made of PAN fiber is cut in the size of the structure part, the ends of the fiber cloth are first adhered onto rigid boards and its inner surface is painted with glue; then, the rigid board at one end is fixed to one end of the bottom of the part to be reinforced, the glued carbon fiber cloth is then adhered to the surface of the part and the rigid board at the other end is tensed by one special equipment to make the tensile strain of the carbon fiber cloth reach 10-60% its limit strain; and finally the second rigid board is fixed to the second end of the part to be reinforced.
Description
The present invention relates to a kind of architectural job practices and equipment, particularly building structure is reinforced the job practices and the equipment thereof of the carbon cloth of usefulness.
Carbon fiber is a kind of high-tech material, is used for high-tech areas such as Aero-Space the earliest, progressively develops into fields such as aircraft industry, boats and ships, automobile, building, sports entertainment article afterwards.According to its raw materials for production difference, carbon fiber has many types, and different characteristics are arranged.Aspect building,, need carry out structural strengthening because a variety of causes can cause the supporting capacity of building structure to descend.Adopting carbon cloth reinforced is one of main means.The carbon cloth that is used for the building structure reinforcing and repairing mainly adopts the PAN base fiber, and this carbon cloth has excellent physical and mechanical property, good caking property, heat resistance and corrosion resistance.Compare with traditional method for strengthening and repairing and to have tangible technical advantage.Mainly show: be used for the carbon cloth that building structure is reinforced, about ten times of its intensity steel for building approximately, modulus of elasticity and steel for building are on same level, and slightly raising, are a kind of good structural strengthening materials.The carbon fibre material that building structure is reinforced usefulness is a carbon fibre fabric, claim that it is carbon cloth (CFS), the job practices of existing carbon cloth reinforced concrete member is: be coated with one deck interfacial agents in concrete basic unit, its effect is to soak into into concrete surface, the second layer is a levelling face, it is smooth to guarantee that CFS pastes, and pastes CFS with resin for the 3rd layer.At present CFS reinforces and all adopts said method to construct, usually by hand or simple tool finish.This job practices is stressed before reinforcing owing to being reinforced member, therefore CFS sticks on and exists certain stress to lag behind on the stressed member, again because modulus of elasticity and the structural steel of CFS are basic identical, strenthening member is subjected to the restriction of deformation condition, the intensity of CFS can not be fully utilized, and generally only uses about 40% of CFS intensity.The effect that makes building structure reinforce is undesirable.
Purpose of the present invention is exactly in order to address the above problem, and proposes a kind of consolidation effect very good carbon cloth prestress reinforced construction method and special equipment thereof.
Technical solution of the present invention:
A kind of carbon cloth prestress reinforced construction method is characterized in that:
A, the building structure member of earlier need being reinforced carry out surfacing;
B, the member size cutting that will be reinforced as required by the carbon cloth that the PAN base fiber is made be got off, its two ends stick on the plate of material with certain rigidity, and to this carbon cloth inner surface gluing, the plate of material of one end is fixed on an end that needs the strenthening member bottom surface, then the carbon cloth of gluing is fitted with the surface that needs strenthening member, rigid material plate to the other end carries out stretch-draw again, make the stretching strain value of carbon cloth reach the 10-60% of its limiting strain value, will hold the rigid material plate to be fixed at last needs the other end on strenthening member surface to get final product.
A kind of carbon cloth prestressed reinforcement construction special equipment, it is characterized in that it is made up of two fixed supports and a stretch-draw junction plate, fixed support is made up of two orthogonal angle steel one, the inner stationary plane of its vertical angle steel is provided with fixed bolt hole, the bottom of its outer end one side is provided with vertical elongated slot screw, one end of support bracket fastened horizontal angle steel is connected as a single entity with vertical angle steel middle part, laterally also is provided with fixed bolt hole on the inner one side of angle steel, has elongated slot on its outer end one side; The stretch-draw junction plate is a plate body, its surface is provided with the cavity that the rigid material plate with the carbon cloth termination matches, and have the ail gun hole on the cavity bottom surface, stretch-draw junction plate outer end is fixed with two tensioning screw rods that stretch out, spacing between two tensioning screw rods is slightly larger than the width of the strenthening member of wanting, after making that two fixed supports are fixed on the two sides that are reinforced member, two tensioning screw rods of stretch-draw junction plate just in time penetrate in the vertical elongated slot screw of two support bracket fastened vertical angle steel outer ends, one basifacial, the both sides of stretch-draw junction plate all have one with the horizontal angle steel of fixed support outer face on the following elongated slot that matches of elongated slot, spacing between twice elongated slots also is slightly larger than the width that is reinforced member, after making that two fixed supports are fixed on the two sides that are reinforced member, just in time two last elongated slots with two support bracket fastened horizontal angle steel outer ends one side are corresponding one by one for elongated slot under the both sides of stretch-draw junction plate, and penetrate fixing by adjustment screw rod separately.
The present invention has following advantage:
1, adds the shortcoming that can solve above-mentioned common CFS strengthening construction technology because of construction technology with CFS prestressing force, because carrying out stretch-draw before stickup, the CFS that is used to reinforce make CFS stressed in advance, solved stress hysteresis problem, and make the tensile region of member be subjected to compressive pre-stress, reduced the stretching strain under the concrete member load action, the intensity of CFS is not fully exerted, the rate of utilization of strength of CFS can reach about 90%, save material, improved the consolidation effect of member.
2, tensioning process of the present invention is simple and feasible, and tensioning equipment is also simple, and cost of equipment is low.Processing ease of the present invention, strengthening quality is good, and the life-span is long, and effect is very good.
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the actual installation structural representation of special equipment of the present invention.
Fig. 2 be special equipment of the present invention the stretch-draw junction plate and with the connection diagram of carbon cloth.
Fig. 3 is the installation diagrammatic side view of the stretch-draw junction plate and the carbon cloth of special equipment of the present invention.
Carbon cloth prestress reinforced construction method of the present invention is:
1, the building structure member of earlier need being reinforced carries out surfacing.
2, will get off by the member size cutting that the carbon cloth (CFS) that the PAN base fiber is made is reinforced as required, its two ends stick on the plate of material with certain rigidity, and to this carbon cloth inner surface gluing, the plate of material of one end is fixed on an end that needs the strenthening member bottom surface, then the carbon cloth of gluing is fitted with the surface that needs strenthening member, rigid material plate to the other end carries out stretch-draw again, make the stretching strain value of carbon cloth reach the 10-60% of its limiting strain value, will hold the rigid material plate to be fixed at last needs the other end on strenthening member surface to get final product.
Carbon cloth prestressed reinforcement construction special equipment of the present invention such as Fig. 1-3, it is made up of two fixed supports 1 and a stretch-draw junction plate 2, fixed support 1 is made up of two orthogonal angle steel 3,4 one, the inner stationary plane of its vertical angle steel 3 is provided with fixed bolt hole 5, the bottom of its outer end one side is provided with vertical elongated slot screw 6, one end of the horizontal angle steel 4 of fixed support 1 is connected as a single entity with vertical angle steel 3 middle parts, laterally also be provided with fixed bolt hole 5 on the angle steel 4 inner one sides, have elongated slot 7 on its outer end one side; Stretch-draw junction plate 2 is a plate body, its surface is provided with the cavity 9 that the rigid material plate 8 with carbon cloth 15 terminations matches, and cavity has ail gun hole 10 on 9 bottom surfaces, stretch-draw junction plate 2 outer ends are fixed with two tensioning screw rods that stretch out 11, spacing between two tensioning screw rods 11 is slightly larger than the width of the strenthening member of wanting 12, after making that two fixed supports 1 are fixed on the two sides that are reinforced member 12, two tensioning screw rods 11 of stretch-draw junction plate 2 just in time penetrate in the vertical elongated slot screw 6 of vertical angle steel 3 outer ends one basifacial of two fixed supports 1, the both sides of stretch-draw junction plate 2 all have one with fixed support 1 horizontal angle steel 4 outer faces on the following elongated slot 13 that matches of elongated slot 7, spacing between twice elongated slots 13 also is slightly larger than the width that is reinforced member 12, after making that two fixed supports 1 are fixed on the two sides that are reinforced member 12, just in time horizontal angle steel 4 outer ends two the last elongated slots 7 simultaneously with two fixed supports 1 are corresponding one by one for elongated slot 13 under the both sides of stretch-draw junction plate 2, and penetrate fixing by adjustment screw rod 14 separately.
Embodiments of the invention (is example with the strenthening member bottom surface):
Earlier the bottom surface of the house component 12 that need are reinforced is polished, ash disposal, is coated with surfacings such as interfacial agents, levelling, and according to the following carbon cloth 15 of corresponding one section size of this big or small cutting that is reinforced member 12, the equal gluing of two ends inner surface (as resin glue) with this carbon cloth 15, cement in then on the two rigid material plates 8, rigid material plate 8 can adopt aluminium sheet or steel plate, also can adopt other to have the plate of material of certain rigidity.At this moment, two fixed supports 1 are placed in the place, two sides, outer end that is reinforced member 12 respectively, and with expansion bolt pass the vertical angle steel 3 of fixed support 1 and laterally the fixed bolt hole 5 of angle steel 4 two fixed supports 1 are fixed on the two sides, outer end that are reinforced member 12, then two tensioning screw rods 11 of stretch-draw junction plate 2 are penetrated in the elongated slot screw 6 on vertical angle steel 3 outer faces of two fixed supports 1, and be with and tighten nut 16, at this moment, the following elongated slot 13 of stretch-draw junction plate 2 both sides just in time with horizontal angle steel 4 outer ends of two fixed supports 1 one side on last elongated slot 7 corresponding one by one, also be installed with between them and adjust screw rod 14, and also be with and adjust nut 17, because adjusting nut 17 does not tighten, then this moment, stretch-draw junction plate 2 surface and the spacing that is reinforced between member 12 bottom surfaces were bigger, so that put into the rigid material plate 8 of carbon cloth 15 1 ends.After fixed support 1 installs, can carry out uniform gluing (as resin glue) to the upper surface of the carbon cloth 15 between the two rigid material plates 8, rigid material plate 8 with carbon cloth 15 1 ends is fixed on the bottom face of not establishing fixed support 1 that is reinforced member 12 then, this fixing means can adopt ail gun to finish, again the rigid material plate 8 of carbon cloth 15 other ends is put into the cavity that matches 9 on stretch-draw junction plate 2 surfaces, better for fixed effect, can be connected with rigid material plate 9 in the cavity 9 from the cavity 9 underrun bolts 18 of stretch-draw junction plate 2.Can fit the coated face of carbon cloth 15 this moment with the bottom surface that is reinforced member 12, tighten up simultaneously and adjust nut 17 and tighten nut 16, makes carbon cloth 15 coated faces be close to the bottom surface that is reinforced member 12.After being close to the bottom surface that is reinforced member 12 when carbon cloth 15, can carry out prestressed stretch-draw to it, pull simultaneously on the stretch-draw junction plate 2 with two torque spanneres and tighten nut 16 on two tensioning screw rods 11 this moment, this two torque spanner should keep identical torsional moment, to reach desired torsional moment value simultaneously.It is fixed that the application of force of torque spanner is come according to the carbon cloth 15 required strain values that reach, if require carbon cloth 15 to reach (as if being example) of its limiting strain value at 10% o'clock with three meters long carbon fiber cloth, can apply the power of about 20N.m to torque spanner, if require carbon cloth 15 to reach 30% o'clock of its limiting value, can apply the power of about 50N.m, if require carbon cloth 15 to reach 60% o'clock of its limiting value, can apply the power of about 80N.m.Usually the prestressing force controlling value of carbon cloth is preferably the 40-50% of its limiting strain value.In above-mentioned application of force process, because fixed support 1 and stretch-draw junction plate 2 are provided with upper and lower one to one elongated slot 7,13, then carbon cloth 15 is in stretching process, adjusting screw rod 14 can move in upper and lower elongated slot 7,13 with stretch-draw junction plate 2, thereby guarantees that carbon cloth 15 is close to the bottom surface that is reinforced member 12 always in whole stretching process.After carbon cloth 15 is arrived desired strain value by stretch-draw, by the nailing hole 10 of stretch-draw junction plate 2 cavitys 9 bottom surfaces the rigid material plate 8 in the cavity 9 is penetrated (if the rigid material plate 8 of using bolt 18 to reinforce in the cavitys 9 admittedly on the bottom surface that is reinforced member 12 corresponding end with ail gun, then should pull down bolt 18 earlier), be dismountable fixed support 1 and stretch-draw junction plate 2 this moment.Last again to being fixed on the soffit brush one deck glue that is reinforced the carbon cloth 15 on member 12 bottom surfaces, make carbon cloth 15 and glue blend together one.Because carbon cloth 15 is stressed in advance in the process of strenthening member 12, then it produces compressive pre-stress to the tensile region of member 12, so reduced the stretching strain under the member load action, makes the intensity of carbon cloth 15 obtain giving full play to.
Method of the present invention and special equipment in like manner also can be reinforced the upper surface of member with carbon cloth reinforced, carry hypodynamic problem to solve house component opposing hogging moment.
Claims (3)
1, a kind of carbon cloth prestress reinforced construction method is characterized in that:
A, the building structure member of earlier need being reinforced carry out surfacing;
B, the member size cutting that will be reinforced as required by the carbon cloth that the PAN base fiber is made be got off, its two ends stick on the plate of material with certain rigidity, and to this carbon cloth inner surface gluing, the plate of material of one end is fixed on an end that needs the strenthening member bottom surface, then the carbon cloth of gluing is fitted with the surface that needs strenthening member, rigid material plate to the other end carries out stretch-draw again, make the stretching strain value of carbon cloth reach the 10-60% of its limiting strain value, will hold the rigid material plate to be fixed at last needs the other end on strenthening member surface to get final product.
2, carbon cloth prestress reinforced construction method according to claim 1 is characterized in that the stretching strain value of described carbon cloth should reach the 40-50% of its limiting strain value.
3, a kind of carbon cloth prestressed reinforcement construction special equipment, it is characterized in that it is made up of two fixed supports and a stretch-draw junction plate, fixed support is made up of two orthogonal angle steel one, the inner stationary plane of its vertical angle steel is provided with fixed bolt hole, the bottom of its outer end one side is provided with vertical elongated slot screw, one end of support bracket fastened horizontal angle steel is connected as a single entity with vertical angle steel middle part, laterally also is provided with fixed bolt hole on the inner one side of angle steel, has elongated slot on its outer end one side; The stretch-draw junction plate is a plate body, its surface is provided with the cavity that the rigid material plate with the carbon cloth termination matches, and have the ail gun hole on the cavity bottom surface, stretch-draw junction plate outer end is fixed with two tensioning screw rods that stretch out, spacing between two tensioning screw rods is slightly larger than the width of the strenthening member of wanting, after making that two fixed supports are fixed on the two sides that are reinforced member, two tensioning screw rods of stretch-draw junction plate just in time penetrate in the vertical elongated slot screw of two support bracket fastened vertical angle steel outer ends, one basifacial, the both sides of stretch-draw junction plate all have one with the horizontal angle steel of fixed support outer face on the following elongated slot that matches of elongated slot, spacing between twice elongated slots also is slightly larger than the width that is reinforced member, after making that two fixed supports are fixed on the two sides that are reinforced member, just in time two last elongated slots with two support bracket fastened horizontal angle steel outer ends one side are corresponding one by one for elongated slot under the both sides of stretch-draw junction plate, and penetrate fixing by adjustment screw rod separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99120617 CN1256345A (en) | 1999-12-15 | 1999-12-15 | Prestress reinforced construction method and special equipment with carbon fiber cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99120617 CN1256345A (en) | 1999-12-15 | 1999-12-15 | Prestress reinforced construction method and special equipment with carbon fiber cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1256345A true CN1256345A (en) | 2000-06-14 |
Family
ID=5281584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99120617 Pending CN1256345A (en) | 1999-12-15 | 1999-12-15 | Prestress reinforced construction method and special equipment with carbon fiber cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1256345A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359118C (en) * | 2004-10-13 | 2008-01-02 | 吴智深 | Method of applying FRP rope reinforced member and its special equipment |
| CN100363586C (en) * | 2006-10-11 | 2008-01-23 | 葛培中 | Method for rein forcing concrete structure by top push type prestress carbon fibre cloth and use |
| CN100363585C (en) * | 2004-03-04 | 2008-01-23 | 北京特希达科技有限公司 | Prestressed carbon fiber plate stretching method and device |
| CN100366845C (en) * | 2005-05-10 | 2008-02-06 | 田安国 | Method for strengthening construction unit using high strength fibre cloth |
| CN102605966A (en) * | 2012-03-20 | 2012-07-25 | 中冶建筑研究总院有限公司 | Method for reinforcing concrete structure |
| CN103541558A (en) * | 2013-10-30 | 2014-01-29 | 扬州大学 | Method and device for hooping and reinforcing ancient brick tower by prestressed carbon fiber plate |
| CN105064224A (en) * | 2015-09-02 | 2015-11-18 | 山东大学 | Device and method for tensioning and reinforcing double layers of pre-stress carbon fiber sheet at same time |
| CN105064694A (en) * | 2015-08-06 | 2015-11-18 | 湖南大学 | Tensioning device for applying pretensioning force to fiber cloth materials and tensioning method of tensioning device |
| CN108590220A (en) * | 2018-05-09 | 2018-09-28 | 河海大学 | Carbon cloth reinforced automatic constructing device suitable for variable cross-section rib type structure |
-
1999
- 1999-12-15 CN CN 99120617 patent/CN1256345A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363585C (en) * | 2004-03-04 | 2008-01-23 | 北京特希达科技有限公司 | Prestressed carbon fiber plate stretching method and device |
| CN100359118C (en) * | 2004-10-13 | 2008-01-02 | 吴智深 | Method of applying FRP rope reinforced member and its special equipment |
| CN100366845C (en) * | 2005-05-10 | 2008-02-06 | 田安国 | Method for strengthening construction unit using high strength fibre cloth |
| CN100363586C (en) * | 2006-10-11 | 2008-01-23 | 葛培中 | Method for rein forcing concrete structure by top push type prestress carbon fibre cloth and use |
| CN102605966A (en) * | 2012-03-20 | 2012-07-25 | 中冶建筑研究总院有限公司 | Method for reinforcing concrete structure |
| CN102605966B (en) * | 2012-03-20 | 2016-06-08 | 中冶建筑研究总院有限公司 | A kind of method of reinforced concrete structure |
| CN103541558A (en) * | 2013-10-30 | 2014-01-29 | 扬州大学 | Method and device for hooping and reinforcing ancient brick tower by prestressed carbon fiber plate |
| CN105064694A (en) * | 2015-08-06 | 2015-11-18 | 湖南大学 | Tensioning device for applying pretensioning force to fiber cloth materials and tensioning method of tensioning device |
| CN105064224A (en) * | 2015-09-02 | 2015-11-18 | 山东大学 | Device and method for tensioning and reinforcing double layers of pre-stress carbon fiber sheet at same time |
| CN108590220A (en) * | 2018-05-09 | 2018-09-28 | 河海大学 | Carbon cloth reinforced automatic constructing device suitable for variable cross-section rib type structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106382011B (en) | Concrete structure pre-stressed carbon fiber plate tensioning rollering fastening system and method | |
| CA2301755C (en) | Reinforcement device for supporting structures | |
| CN108843037B (en) | Construction method of prestressed fiber cloth reinforced beam tensioning and anchoring device | |
| Lamanna et al. | Flexural strengthening of reinforced concrete beams by mechanically attaching fiber-reinforced polymer strips | |
| EP2171169B1 (en) | Method for applying a reinforced composite material to a structural member | |
| US20080245030A1 (en) | Building Wall Structure | |
| CN100363586C (en) | Method for rein forcing concrete structure by top push type prestress carbon fibre cloth and use | |
| CN204311761U (en) | A kind of prestressed carbon cloth reinforced concrete column tensioning equipment | |
| CN1702270A (en) | Prestressed tensioning device for fiber board | |
| CN1256345A (en) | Prestress reinforced construction method and special equipment with carbon fiber cloth | |
| CN101074578A (en) | Special anchoros for wedged variable-corrugated clamped sheets | |
| DE10254043B4 (en) | Composite construction of high load capacity | |
| CN107059663A (en) | A kind of device of utilization pre-stress FRP cloth reinforced steel concrete pier stud | |
| CN113152759A (en) | Assembled prestressing force reinforcing quadrature veneer wood floor | |
| JPH04285247A (en) | Member for introducing prestress and method of introducing prestress | |
| CN108396969B (en) | Steel strand mesh tensioning and fastening assembly for building structure reinforcement and application method thereof | |
| Mohammad et al. | Shear strength enhancement of lightweight aggregate reinforced concrete deep beams by using CFRP strips | |
| CN100547203C (en) | Bamboo girder member | |
| CN108316556A (en) | A kind of lightweight concrete-bamboo wood T-type beam | |
| CN209637062U (en) | A kind of assembled sound insulating floor slab system | |
| CN112593667A (en) | Installation device for dry-hanging decoration ceramic tile and use method thereof | |
| CN208455942U (en) | A kind of lightweight concrete-bamboo wood T-type beam | |
| CN220686732U (en) | Steel bar truss template | |
| CN213269039U (en) | Wall column shaft fiber anchoring and reinforcing structure | |
| EP0466685B1 (en) | Lining for buildings and method for its manufacture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |