CN103266774A - Prestress tensioning device and use method of fiber cloth - Google Patents
Prestress tensioning device and use method of fiber cloth Download PDFInfo
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- CN103266774A CN103266774A CN2013101958564A CN201310195856A CN103266774A CN 103266774 A CN103266774 A CN 103266774A CN 2013101958564 A CN2013101958564 A CN 2013101958564A CN 201310195856 A CN201310195856 A CN 201310195856A CN 103266774 A CN103266774 A CN 103266774A
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- hydraulic jack
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Abstract
The invention relates to a prestress tensioning device and use method of fiber cloth. Two ends of a supporting rod are fixedly connected with steel members through base plates, a hydraulic jack is fixed between one end of the supporting rod and one base plate, and two mutually-parallel rolling shafts are arranged on each steel member. According to the use method, the fiber cloth is wound around the rolling shafts by one circle, a lap joint length is reserved, clamping pieces are used for conducting firm clamping on the lap joint area of the fiber cloth, pressurization is carried out on the hydraulic jack, the prestress tensioning device and the fiber cloth are jointly lifted to the portion which needs reinforcing, and the construction operation of pasting the high-strength fiber cloth can be carried out. The prestress tensioning device and use method of the fiber cloth has the advantages of being simple and skillful in structure, being not limited by the field, easy to construct and capable of fully developing a strength value of the high-strength fiber cloth, adopting the mode that the jack is internally arranged to exert expansive force, and achieving the aim of exerting prestress due to the fact that the high-strength fiber cloth wound on the rolling shaft is lengthened through the rolling shafts arranged on the end portions.
Description
Technical field
The invention belongs to the structural strengthening technical field of construction, relate in particular to a kind of pre-stress stretching device and using method of cloth.
Background technology
In recent years, cloth is applied to structure repair and field of reinforcement more and more widely with distinct advantages such as its lightweight, high-strength (carbon fiber strength is about 10 times of steel), corrosion-resistant, easy constructions.Yet, when the high-intensity fiber fabric reinforcing method is promoted on a large scale, the researcher finds that also the reinforcement means commonly used of high strength fibre cloth exists obvious technological deficiency: because the modulus of elasticity of high strength fibre cloth is unlike the steel height, when tensile reinforcement is surrendered, its intensity is just brought into play less than 20%, have only after member serious cracking and the obvious increase of distortion, just may give play to more intensity level, but this moment, member can not satisfy normal instructions for use.Therefore, should adopt the pre-stressed construction method of high strength fibre cloth.
For common high strength fibre cloth, if adopt effective prestress tensioning equipment to carry out pre-stress construction, just can give full play to the intensity level of high strength fibre cloth, improve cracking load and the yield load of member, alleviate the stress hysteresis problem of high strength fibre cloth, effectively delayed fracture is carried out, and reduces deflection deformation, significantly improves the service behaviour of structure.
Owing to the high strength fibre cloth prestress tensioning equipment that does not also occur in the market being easy to construct, so the exploitation of high strength fibre cloth pre-stress construction equipment just becomes the key that this technology is promoted the use of.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this invention is to provide a kind of flexible and convenient to usely, the pre-stress stretching device of the cloth that is easy to construct and using method reach the requirement of giving full play to the high strength fibre cloth intensity level.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of pre-stress stretching device of cloth, comprise strut, hydraulic jack, steel member, backing plate, the strut two ends are fixedly connected with the steel member by backing plate, between strut one end and the backing plate hydraulic jack are arranged fixedly, and described steel member is provided with two roller bearings parallel to each other.
Described strut is composed of a fixed connection by flange by steel pipe more than two sections or two sections.
The roller of the steel member at described strut two ends is arranged in parallel.
Described backing plate width W is the 1/5-1/3 of strut diameter DN.
The using method of the pre-stress stretching device of described a kind of cloth may further comprise the steps:
1) according to the amount of tension of need strenthening member length and cloth, strut is made up at bulk data scene, and many steel pipes are fixedly connected to form strut by flange, to adapt to transportation and on-the-spot the assembling;
2) strut one end is by the fixedly connected hydraulic jack of flange, the hydraulic jack other end connects backing plate, and the steel member by two roller bearings of backing plate connecting band, the moment of flexure influence of end when backing plate is used for reducing the hydraulic jack unloading, the strut other end connects backing plate by flange, and passes through the steel member of two roller bearings of backing plate connecting band;
3) cloth is walked around roller bearing and twined a circle, and reserve lap length, carry out firm grip with a plurality of steel plate clamp clips in the overlap joint zone of cloth again;
4) according to cloth stretching force design load hydraulic jack is pressurizeed, stop when reaching 2 times of stretching force design loads, equipment is promoted to need together with cloth reinforces the position, can paste the constructing operation of high strength fibre cloth, treat that construction finishes, when reaching unloading condition, discharge the pressure of hydraulic jack, dismantle this device and recycle.
Compared with prior art, the invention has the beneficial effects as follows:
Dexterity simple in structure is not limited by or not the place, is easy to construction, can give full play to the high strength fibre cloth intensity level, establishes the mode that jack applies expansion force in the employing, elongates the high strength fibre cloth that is wrapped on the roller bearing by the end roller bearing, reaches to apply prestressed purpose.Pre-stressed fiber cloth and equipment one can promote and lay flexibly, and be lower to site requirements.This device is demountable structure, is convenient to transportation, can assemble at the construction field (site).
Description of drawings
Fig. 1 is front view of the present invention.
Fig. 2 is vertical view of the present invention.
Fig. 3 is lateral view of the present invention.
Fig. 4 is the partial enlarged drawing of Fig. 1.
Among the figure: 1-strut 2-hydraulic jack 3-steel member 4-clamp clip 5-cloth 6-backing plate 7-roller bearing.
The specific embodiment
Below in conjunction with Figure of description the present invention is described in detail, but should be noted that enforcement of the present invention is not limited to following embodiment.
See Fig. 1-Fig. 4, a kind of pre-stress stretching device of cloth, comprise strut 1, hydraulic jack 2, steel member 3, backing plate 6, strut 1 two ends are fixedly connected with steel member 3 by backing plate 6, between strut 1 one ends and the backing plate 6 hydraulic jack 2 is arranged fixedly, described steel member 3 is provided with two roller bearings parallel to each other 7.
Described strut 1 is composed of a fixed connection by flange by steel pipe more than two sections or two sections.
Described backing plate 6 width W are the 1/5-1/3 of strut 1 diameter DN.
The using method of the pre-stress stretching device of described a kind of cloth may further comprise the steps:
1) according to the amount of tension of need strenthening member length and cloth 5, strut 1 is made up at bulk data scene, and many steel pipes are fixedly connected to form strut 1 by flange, to adapt to transportation and on-the-spot the assembling;
2) strut 1 one ends are by the fixedly connected hydraulic jack 2 of flange, and hydraulic jack 2 other ends connect backing plate 6, and pass through the steel member 3 of two roller bearings of backing plate 6 connecting bands, the moment of flexure influence of end when backing plate 6 is used for reducing hydraulic jack 2 unloadings;
3) cloth 5 is walked around roller bearing 7 and twined a circle, and reserve lap length, carry out firm grip with a plurality of steel plate clamp clips 4 in the overlap joint zone of cloth 5 again;
4) according to cloth 5 stretching force design loads hydraulic jack 2 is pressurizeed, stop when reaching 2 times of stretching force design loads, this device is promoted to need together with cloth 5 reinforces the position, can paste the constructing operation of high strength fibre cloth 5, treat that construction finishes, when reaching unloading condition, discharge the pressure of hydraulic jack 2, dismantle this device and recycle.
Embodiment:
This installs each parts and all selects high strength steel material making such as Q345 for use, determine strut 1 sectional dimension according to common beam slab span, determine roller bearing 7 length of steel member 3 according to common beam width, load the dimensions that numerical value and construction operation space are determined steel member 3 according to commonly used.Strut 1 is formed by fixedly connecting by flange by a plurality of steel pipes, should produce different specification and the length of many groups, to be fit to transportation and on-the-spot assembling.The moment of flexure influence of end when billet 6 is used for reducing hydraulic jack 2 unloadings.
Before the construction, according to method of attachment shown in Fig. 1, according to the amount of tension of strenthening member length and cloth, data such as bulk are come on-the-spot combination strut 1; Connect hydraulic jack 2 then; Connect backing plate 6 again and with the end steel member 3 of two roller bearings.After device assembles is finished, high strength fibre cloth 5 is walked around roller bearing 7 twine a circle, and reserve enough lap length, carry out firm grip with a plurality of steel plate clamp clips 4 in the overlap joint zone of cloth 5 again.
More than operation can select suitable place to carry out, according to high strength fibre cloth stretching force design load hydraulic jack 2 is pressurizeed then, stop when reaching 2 times of stretching force design loads, equipment is promoted to need together with high strength fibre cloth 5 reinforces the position, can paste the constructing operation of high strength fibre cloth 5, treat that construction finishes, when reaching unloading condition, can discharge the pressure of hydraulic jack 2, dismantle this device and recycle.
The present invention's dexterity simple in structure is not limited by or not the place, is easy to construction, can give full play to the high strength fibre cloth intensity level, establish jack in the employing and apply the mode of expansion force, elongate the high strength fibre cloth that is wrapped on the roller bearing by the end roller bearing, reach and apply prestressed purpose.Pre-stressed fiber cloth and equipment one can promote and lay flexibly, and be lower to site requirements.This device is demountable structure, is convenient to transportation, can assemble at the construction field (site).
Claims (5)
1. the pre-stress stretching device of a cloth, it is characterized in that, comprise strut, hydraulic jack, steel member, backing plate, the strut two ends are fixedly connected with the steel member by backing plate, between strut one end and the backing plate hydraulic jack is arranged fixedly, described steel member is provided with two roller bearings parallel to each other.
2. the pre-stress stretching device of a kind of cloth according to claim 1 is characterized in that, described strut is composed of a fixed connection by flange by steel pipe more than two sections or two sections.
3. the pre-stress stretching device of a kind of cloth according to claim 1 is characterized in that, the steel member layout parallel to each other at described strut two ends.
4. the pre-stress stretching device of a kind of cloth according to claim 1 is characterized in that, described backing plate width W is the 1/5-1/3 of strut diameter DN.
5. according to the using method of the pre-stress stretching device of the described a kind of cloth of claim 1-4, it is characterized in that, may further comprise the steps:
1) according to the amount of tension of need strenthening member length and cloth, strut is made up at bulk data scene, and many steel pipes are fixedly connected to form strut by flange, to adapt to transportation and on-the-spot the assembling;
2) strut one end is by the fixedly connected hydraulic jack of flange, the hydraulic jack other end connects backing plate, and the steel member by two roller bearings of backing plate connecting band, the moment of flexure influence of end when backing plate is used for reducing the hydraulic jack unloading, the strut other end connects backing plate by flange, and passes through the steel member of two roller bearings of backing plate connecting band;
3) cloth is walked around roller bearing and twined a circle, and reserve lap length, carry out firm grip with a plurality of steel plate clamp clips in the overlap joint zone of cloth again;
4) according to cloth stretching force design load hydraulic jack is pressurizeed, stop when reaching 2 times of stretching force design loads, this device is promoted to need together with cloth reinforces the position, can paste the constructing operation of high strength fibre cloth, treat that construction finishes, when reaching unloading condition, discharge the pressure of hydraulic jack, dismantle this device and recycle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195856.4A CN103266774B (en) | 2013-05-21 | 2013-05-21 | A kind of pre-stress stretching device of cloth and using method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310195856.4A CN103266774B (en) | 2013-05-21 | 2013-05-21 | A kind of pre-stress stretching device of cloth and using method |
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| CN103266774A true CN103266774A (en) | 2013-08-28 |
| CN103266774B CN103266774B (en) | 2015-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664525A (en) * | 2019-01-31 | 2019-04-23 | 山东柏远复合材料科技有限公司 | A kind of device and method producing the composite materials such as high performance pipe plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070046581A (en) * | 2005-10-31 | 2007-05-03 | 한국전력공사 | A prestressing anchorage system of carbon fiber reinforced polymer plate for flexural strengthening of rc structures and method using it |
| CN201581645U (en) * | 2009-12-18 | 2010-09-15 | 飞渭 | Device for applying prestress on loop-type composite fiber cloth |
| CN203308104U (en) * | 2013-05-21 | 2013-11-27 | 中冶焦耐工程技术有限公司 | Prestress tension device of fiber cloth |
-
2013
- 2013-05-21 CN CN201310195856.4A patent/CN103266774B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070046581A (en) * | 2005-10-31 | 2007-05-03 | 한국전력공사 | A prestressing anchorage system of carbon fiber reinforced polymer plate for flexural strengthening of rc structures and method using it |
| CN201581645U (en) * | 2009-12-18 | 2010-09-15 | 飞渭 | Device for applying prestress on loop-type composite fiber cloth |
| CN203308104U (en) * | 2013-05-21 | 2013-11-27 | 中冶焦耐工程技术有限公司 | Prestress tension device of fiber cloth |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664525A (en) * | 2019-01-31 | 2019-04-23 | 山东柏远复合材料科技有限公司 | A kind of device and method producing the composite materials such as high performance pipe plate |
| CN109664525B (en) * | 2019-01-31 | 2023-11-14 | 山东柏远复合材料科技股份有限公司 | Equipment and method for producing high-performance composite materials such as pipe plates |
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| CN103266774B (en) | 2015-11-18 |
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Effective date of registration: 20180725 Address after: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee after: ACRE Coking And Refractory (Dalian) Engineering Consulting Corp., MCC Address before: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee before: ACRE Coking and Refractory Engineering Consulting Corporation, MCC |