CN1699710A - Prestressed fiber reinforced plastic plate anchoring device and tensioning towknee coordinated therewith - Google Patents
Prestressed fiber reinforced plastic plate anchoring device and tensioning towknee coordinated therewith Download PDFInfo
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- CN1699710A CN1699710A CN 200510039189 CN200510039189A CN1699710A CN 1699710 A CN1699710 A CN 1699710A CN 200510039189 CN200510039189 CN 200510039189 CN 200510039189 A CN200510039189 A CN 200510039189A CN 1699710 A CN1699710 A CN 1699710A
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Abstract
The pre-stressing force fabric strengthens the anchored installation of fabric plate materials and the use of tension driving frame in a complete system, involve the strengthening of the fabric plate materials by the pre-stressing force fabric, consolidate the firmly sprouted equipment of concrete components and the facilities for the special purpose in the complete system. The pre-stressing force fabrics fortify the anchored installation of fabric plate materials. The clamping apparatus 1 for anchorage ends is situated at the left-hand side of the anchorage ends of baffle 2; the tension ends of the baffle 4 are linked with tension ends of clamping apparatus 3 in an integral whole through the fixed guide screw along both sides. The anchorage ends of the clamping apparatus 1 and the tension ends of clamping apparatus 3 are equipped with automatic (self) anchorage installation of cutting-block shape 6. There exists a kind of pre-stressing force fabric reinforcing the tension-expansion and contraction frame of the fabric plates. At the recoil part 8, are two guide screws on both sides, which form a rectangular block with the forepart 7 and the rear part 8. The forepart 7 can move horizontally along the guide screw 9. To adopt the pre-stressing force fabric to strengthening the anchored installation of fabric plate materials with the present invention will enable the fabrics on the concrete to reinforce the fabric plate materials to maintain a certain pre-stressing force for a long period of time. The tension force frame used in a complete system can exert certain amount of pre-stressing force to the fabric strengthening plastic plate materials according to the design requirements.
Description
Technical field
Pre-stress fibre reinforced plastic (Fiber Reinforced Plastics, hereinafter to be referred as FRP) sheet material anchor device and matching used stretching frame, the fastener and the supporting equipment of using that relate to prestressing force sheet material reinforced concrete member relate in particular to the fastener and the matched special-purpose tensioning equipment of pre-stress FRP sheet material reinforced concrete member.
Background technology
In technical field of civil engineering, concrete component is modal structure types.For example general building construction, bridge, tunnel etc. are seen everywhere.Owing to problems such as material aging, environmental corrosion, service load change, natural calamity and construction quality cause large quantities of concrete component facilities often to need reinforcement and repair.Compare with traditional reinforcement means (as affixing steel plate etc.), the fiber enhanced plastic plate material with its lightweight, high-strength, corrosion-resistant, construction is convenient, comprehensive price ratio advantages of higher has at home and abroad obtained using widely.According to foreign data, at present there are nearly 100,000 reinforcement corrosions serious in 600,000 bridge blocks of the U.S., the maintenance cost that is used for road bridge every year is just up to 50,000,000,000 dollars, just comprises that wherein a large amount of use FRP sheet materials reinforce concrete structure.
For a long time, when using FRP sheet material that concrete structure is reinforced, only be simply FRP sheet material directly to be sticked on the building surface that needs reinforcement.This reinforcing mode improves obviously the ultimate load of structure, but improve all little to its cracking load and yield load, mainly be in the normal operational phase of member, the stress of FRP sheet material lags behind the stress of reinforcing bar far away, it often just works later at reinforcement yielding, and this has just limited the performance that FRP sheet material high tensile is stretched performance.If FRP sheet material is applied certain prestressing force in advance, paste building surface again, promptly use pre-stress FRP sheet material reinforcing technique, can better bring into play the performance of FRP sheet material, improve the consolidation effect of FRP sheet material.
Summary of the invention
The anchor device and the matching used stretching frame that the purpose of this invention is to provide a kind of pre-stress FRP sheet material are to realize that utilization has prestressed FRP sheet material and reinforces civil engineering concrete structure technology.The prestressing force of FRP sheet material is to finish by the supporting stretching frame of special use, and it can apply the prestressing force of a certain amount of size to FRP sheet material by designing requirement, to strengthen the consolidation effect of FRP sheet material.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of anchor device of pre-stress FRP sheet material, it comprises parts such as fixed end anchor clamps 1, fixed end baffle plate 2, stretch-draw end anchor clamps 3, stretch-draw end-stopping plate 4, described fixed end anchor clamps 1 are positioned at fixed end baffle plate 2 left sides, the fixed guide screw rod 5 of stretch-draw end-stopping plate 4 by its left and right sides is connected as a single entity with stretch-draw end anchor clamps 3, fixed end anchor clamps 1 and stretch-draw end anchor clamps 3 be assign wedge type block 6 from anchor device.When being after FRP sheet material 13 imposes prestressing force with special-purpose stretching frame, since be positioned at the fixed end anchor clamps 1 at sheet material 13 two ends and stretch-draw end anchor clamps 3 be assign wedge type block 6 from anchor device, therefore, can make and have that prestressed FRP sheet material 13 is long-term after to concrete structure reinforcement to keep this tension force.Assign into the wedge type block 6 in fixed end anchor clamps 1 and the stretch-draw end anchor clamps 3, the surperficial crude injustice that it contacts with pre-stress FRP sheet material 13.Such design is in order to increase the snap-in force between anchor device and sheet material.
The prestressing force of FRP sheet material is implemented by a kind of matching used special-purpose stretching frame, this stretching frame structure comprises leading section 7 and back seat portion 8, respectively there is a moving screw 9 back seat portion 8 inboards, leading section 7 and back seat portion 8 are connected into a rectangular box, and leading section 7 can be done horizontal movement along moving screw 9.The guide spiro rod 9 of back seat portion 8 inboards is equal diameter screw rod not.In the horizontal throw scope of leading section 7, the diameter of moving screw 9 is less on moving screw 9, like this, is convenient to leading section 7 horizontal movement easily.And the obvious overstriking of diameter outside the horizontal throw scope, with the range of control with the leading section 7 of jack displacement, with what avoid occurring being caused because of blindly constructing, the disastrous effect that the pre-stress FRP plate is broken.
Be provided with symmetrical bolt hole seat in the outside of back seat portion 8, it is convenient to fixedly back seat portion.
Medial surface in leading section 7 and back seat portion 8 respectively has a pair of symmetrical groove 10, is used for locating to the jack two ends.During use, the two ends of jack just place this two pairs of grooves 10.
Soffit in leading section 7 and back seat portion 8 also can be provided with groove 11,12, is convenient to the safe FRP of laying plate, and when anchoring push-and-pull operation, groove 11,12 can make the pre-stress FRP plate be free tensioned state.
The pre-stress FRP sheet material anchor device that adopts the present invention program to make can make the certain prestressing force of the long-term maintenance of the FRP sheet material of reinforcing on concrete, has given full play to the lightweight of FRP sheet material, high-strength characteristics.On the basis that does not change the original building structure, increased reinforcing, the reinforcing effect of reinforcement material.Especially meaning is bigger when the senior materials such as carbon fiber of functional performance, good strength.With the matching used stretching frame of pre-stress FRP sheet material, simple in structure, be easy to carry, easy to operate, quick construction.Can apply a certain amount of prestressing force to FRP sheet material by designing requirement.
Description of drawings
Fig. 1 is a pre-stress FRP sheet material anchor device structural representation;
Fig. 2 is fixed end anchor clamps front elevation views;
Fig. 3-1 carves the piece scheme of installation in the fixed end anchor clamps
Fig. 3-2 carves the piece scheme of installation in the stretch-draw end anchor clamps;
Fig. 4 is pre-stress FRP plate stretching frame structural representation;
Fig. 5 is pre-stress FRP plate stretching frame user mode vertical view;
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
As shown in Figure 2, fixed end anchor clamps 1 are of a size of 10cm * 7cm * 3cm, its inside has the wide rectangular opening of 5cm, its height of being close to fixed end baffle plate 2 one stomidiums is 1.1cm, the height of the other end is that the such tapering of 1.6cm is convenient to assign wedge type block 6 (see figure 2)s, also can effectively avoid FRP plate 13 to produce stress herein and concentrate.Wedge type block 6 is of a size of 10cm * 5cm, and its thickness one end is 0.9cm, and the other end is 0.6cm.Wedge type block 6 posts emery paper (80-240 order) with the contacted one side of FRP sheet material and forms crude surface, helps strengthening the frictional force between pre-stress FRP plate 13 and the wedge type block 6 like this.
Fixed end baffle plate 2 is of a size of 11cm * 4cm * 3cm, and the internal holes width is 5cm, is 1.1cm highly, is used to pass FRP plate 13.About fixed end baffle plate 2, have two chemical anchors keyholes, be used for fixing this baffle plate and fixed end anchor clamps 1.
Stretch-draw end anchor clamps 3 are of a size of 11cm * 10cm * 3cm, and its internal construction is identical with fixed end anchor clamps 1, and an end of FRP sheet material places fixed end anchor clamps 1, and the other end just places stretch-draw end anchor clamps 3.The both sides of stretch-draw end anchor clamps 3, the symmetry guide spiro rod 5 that two diameters are 1.2cm that is connected, guide spiro rod 5 is connected as a single entity stretch-draw end anchor clamps 3 and stretch-draw end-stopping plate 4.Stretch-draw end-stopping plate 4 is of a size of 16cm * 4cm * 3cm, it can be done along fixed guide screw rod 5 and move freely, after special-purpose stretching frame applies prestressing force to FRP plate 13, can stretch-draw end-stopping plate 4 and stretch-draw end anchor clamps 3 be located by the bolt of stretch-draw end-stopping plate 4 both sides, with long-term maintenance prestressing force.
What Fig. 4 represented is the stretching frame of pre-stress FRP sheet material, and it comprises leading section 7 and back seat portion 8.Back seat portion 8 inboard symmetries are fixed with two guide spiro rods 9, and guide spiro rod 9 connects into a rectangular box with leading section 7 with back seat portion 8, and leading section 7 can move horizontally along guide spiro rod 9.Guide spiro rod 9 is equal diameter screw rod not, and its total length is 46cm.Because the elongation at break of CFRP plate is generally 1.5%, for the long CFRP plate of 10m, its extension at break is about 15cm, therefore, it is 15cm along the range of guide spiro rod 9 that the present invention sets leading section 7, diameter at this segment limit inner screw is 1.5cm, and the diameter outside the scope is made as 2.0cm, can avoid like this taking place because of the phenomenon that causes pre-stress FRP plate 13 to be broken of blindly constructing.
The outside of back seat portion 8 is provided with symmetrical bolt hole seat, is provided with 6 bolts hole (about each 3) in the present embodiment altogether, is used for fixing back seat portion 8.The diameter of groove 10 is 4.5cm, and the degree of depth is 1.5cm, is used to lay jack.After fixing back seat portion 8, the stretch-draw end anchor clamps 3 that are close on the leading section 7 can be moved to default position by the jack effect, thereby the prestressing force of having finished the FRP plate applies.
The soffit of leading section 7 and back seat portion 8 has groove 12 and groove 11, and its width is 5cm, and the degree of depth is 0.4cm, and its effect is the safe FRP of laying sheet material.For the ease of fixing FRP sheet material, also need to utilize auxiliary briquetting 14 pressurizations during construction, make FRP sheet material be close to concrete surface better.
In when construction, if when concrete substrate intensity is relatively poor, often with fixed end baffle plate 2, stretch-draw end-stopping plate 4, the back seat portion corresponding concrete substrate in 8 places on place anchor base plate 15, its material is steel.The effect of anchor base plate 15 is concrete substrate to be carried out the part strengthen, to improve anchor device and concrete substrate ground anchored force.The size of anchor base plate 15 determines according to the intensity quality degree of the concrete substrate of this position that then if the intensity of concrete substrate is relatively poor, the size of anchor base plate 15 is just big.
All employings are equal to the technical scheme of replacement or equivalent deformation formation, all drop in the protection domain of requirement of the present invention.
Concrete job practices is as follows:
1) measures unwrapping wire according to design drawing, on the precalculated position, concrete substrate surface that needs reinforcement, punch;
2) pre-fixed anchor base plate 15 on the concrete substrate at fixed end baffle plate 2, stretch-draw end-stopping plate 4, back seat portion 8, auxiliary briquetting 14 places as required;
3) tensioning equipment is placed predetermined concrete substrate surface location, 6 bolts hole by stretching frame back seat portion 8 outsides are fixed on stretching frame on anchor base plate 15 and the concrete substrate;
4) the FRP plate is positioned in the groove 11 and groove 12 of stretching frame, the two ends of FRP plate pre-fix by the anchor clamps at two ends in the anchor device, the jack two ends are placed groove 10, carry out the stretch-draw operation by hydraulic pump, make FRP sheet material prestressing force reach design level, pass through the fastening pre-stress FRP plate of anchor clamps at two ends again.
5) remove stretching frame from anchor base plate 15, construction finishes.
Claims (7)
1, pre-stress fibre reinforced plastic sheet material anchor device, it is characterized in that: it comprises fixed end anchor clamps (1), fixed end baffle plate (2), stretch-draw end anchor clamps (3), stretch-draw end-stopping plate parts such as (4), described fixed end anchor clamps (1) are positioned at fixed end baffle plate (2) left side, the fixed guide screw rod (5) of stretch-draw end-stopping plate (4) by its left and right sides is connected as a single entity with stretch-draw end anchor clamps (3), fixed end anchor clamps (1) and stretch-draw end anchor clamps (3) be assign wedge type block (6) from anchor device.
2, pre-stress fibre reinforced plastic sheet material anchor device according to claim 1, it is characterized in that: assign into the wedge type block (6) in fixed end anchor clamps (1) and the stretch-draw end anchor clamps (3), the surperficial crude injustice that it contacts with pre-stress fibre reinforced plastic sheet material.
3, a kind of pre-stress fibre reinforced plastic plate stretching frame, it is characterized in that: it comprises leading section (7) and back seat portion (8), back seat portion (8) both sides respectively have a guide spiro rod (9) that leading section (7) is connected into a rectangular box with back seat portion (8), and leading section (7) can be done horizontal movement along guide spiro rod (9).
4, pre-stress fibre reinforced plastic sheet material stretching frame according to claim 3, it is characterized in that: the outside of back seat portion (8) is provided with symmetrical bolt hole seat.
5, pre-stress fibre reinforced plastic sheet material stretching frame according to claim 3 is characterized in that: the guide spiro rod (9) of back seat portion (8) both sides is equal diameter screw rod not.
6, pre-stress fibre reinforced plastic sheet material stretching frame according to claim 3, it is characterized in that: the medial surface in leading section (7) and back seat portion (8) respectively has a pair of symmetrical groove (10).
7, according to claim 3 or 4 or 5 described pre-stress fibre reinforced plastic sheet material stretching frames, it is characterized in that: the soffit in leading section (7) and back seat portion (8) also can be provided with groove (11), (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510039189 CN1699710A (en) | 2005-04-30 | 2005-04-30 | Prestressed fiber reinforced plastic plate anchoring device and tensioning towknee coordinated therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510039189 CN1699710A (en) | 2005-04-30 | 2005-04-30 | Prestressed fiber reinforced plastic plate anchoring device and tensioning towknee coordinated therewith |
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| CN1699710A true CN1699710A (en) | 2005-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510039189 Pending CN1699710A (en) | 2005-04-30 | 2005-04-30 | Prestressed fiber reinforced plastic plate anchoring device and tensioning towknee coordinated therewith |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332104C (en) * | 2006-03-30 | 2007-08-15 | 尚守平 | Carbon fiber board anchor for civil engineering construction |
| CN100366845C (en) * | 2005-05-10 | 2008-02-06 | 田安国 | Method for strengthening construction unit using high strength fibre cloth |
| CN101851985A (en) * | 2010-05-27 | 2010-10-06 | 卓清 | Articulated anchor and prestress tensioning method of high strength fibre composite sheet |
| CN101021100B (en) * | 2006-11-10 | 2010-12-08 | 天津市耀新科技发展有限公司 | Fiber reinforced ground tackle for fiber reinforcing method |
| CN101913128A (en) * | 2010-07-28 | 2010-12-15 | 重庆大学 | Carbon fiber board prestress tension clamp |
| CN102926551A (en) * | 2012-10-24 | 2013-02-13 | 广东工业大学 | Device and method for reinforcing flexural concrete member |
| CN104005343A (en) * | 2014-06-13 | 2014-08-27 | 成都市磐固科技有限公司 | Bridge prestress carbon fiber plate tensioning anchoring system device |
| CN104805841A (en) * | 2015-02-28 | 2015-07-29 | 河海大学 | FRP rib anchor rod anchoring head capable of applying prestress |
| CN107621441A (en) * | 2017-09-27 | 2018-01-23 | 北京工业大学 | Suitable for FRP tendons and a kind of grip device of bonding wood slip property experiment |
| CN108457425A (en) * | 2018-03-29 | 2018-08-28 | 李园园 | A kind of self-stress pre-tighten cable-rod structure |
| CN109235923A (en) * | 2018-10-31 | 2019-01-18 | 深圳大学 | The single pole prior-warning device and ductility of pre-stress FRP ruggedized construction regulate and control method |
| CN110029592A (en) * | 2019-04-12 | 2019-07-19 | 长沙理工大学 | A kind of external prestressing FRP tendons stretching and anchoring device |
| EP4071321A1 (en) | 2021-04-07 | 2022-10-12 | Vilniaus Gedimino technikos universitetas | Device and method for reinforcing structures with pre-stressed fibre-reinforced-polymer laminates |
-
2005
- 2005-04-30 CN CN 200510039189 patent/CN1699710A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366845C (en) * | 2005-05-10 | 2008-02-06 | 田安国 | Method for strengthening construction unit using high strength fibre cloth |
| CN1332104C (en) * | 2006-03-30 | 2007-08-15 | 尚守平 | Carbon fiber board anchor for civil engineering construction |
| CN101021100B (en) * | 2006-11-10 | 2010-12-08 | 天津市耀新科技发展有限公司 | Fiber reinforced ground tackle for fiber reinforcing method |
| CN101851985A (en) * | 2010-05-27 | 2010-10-06 | 卓清 | Articulated anchor and prestress tensioning method of high strength fibre composite sheet |
| CN101913128A (en) * | 2010-07-28 | 2010-12-15 | 重庆大学 | Carbon fiber board prestress tension clamp |
| CN101913128B (en) * | 2010-07-28 | 2012-07-04 | 重庆大学 | Carbon fiber board prestress tension clamp |
| CN102926551B (en) * | 2012-10-24 | 2015-02-18 | 广东工业大学 | Device and method for reinforcing flexural concrete member |
| CN102926551A (en) * | 2012-10-24 | 2013-02-13 | 广东工业大学 | Device and method for reinforcing flexural concrete member |
| CN104005343A (en) * | 2014-06-13 | 2014-08-27 | 成都市磐固科技有限公司 | Bridge prestress carbon fiber plate tensioning anchoring system device |
| CN104805841A (en) * | 2015-02-28 | 2015-07-29 | 河海大学 | FRP rib anchor rod anchoring head capable of applying prestress |
| CN104805841B (en) * | 2015-02-28 | 2016-11-30 | 河海大学 | A kind of prestressed FRP rebar anchor pole anchor head |
| CN107621441A (en) * | 2017-09-27 | 2018-01-23 | 北京工业大学 | Suitable for FRP tendons and a kind of grip device of bonding wood slip property experiment |
| CN108457425A (en) * | 2018-03-29 | 2018-08-28 | 李园园 | A kind of self-stress pre-tighten cable-rod structure |
| CN109235923A (en) * | 2018-10-31 | 2019-01-18 | 深圳大学 | The single pole prior-warning device and ductility of pre-stress FRP ruggedized construction regulate and control method |
| CN110029592A (en) * | 2019-04-12 | 2019-07-19 | 长沙理工大学 | A kind of external prestressing FRP tendons stretching and anchoring device |
| CN110029592B (en) * | 2019-04-12 | 2024-01-30 | 长沙理工大学 | External prestress FRP rib tensioning and anchoring device |
| EP4071321A1 (en) | 2021-04-07 | 2022-10-12 | Vilniaus Gedimino technikos universitetas | Device and method for reinforcing structures with pre-stressed fibre-reinforced-polymer laminates |
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