CN105277483A - Stretching and freely steering device for FRP rib - Google Patents

Stretching and freely steering device for FRP rib Download PDF

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Publication number
CN105277483A
CN105277483A CN201510828911.8A CN201510828911A CN105277483A CN 105277483 A CN105277483 A CN 105277483A CN 201510828911 A CN201510828911 A CN 201510828911A CN 105277483 A CN105277483 A CN 105277483A
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CN
China
Prior art keywords
frp muscle
steering
frp
rotating disk
bearing
Prior art date
Application number
CN201510828911.8A
Other languages
Chinese (zh)
Inventor
缪海林
宣卫红
陈晓洪
陈育志
Original Assignee
金陵科技学院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 金陵科技学院 filed Critical 金陵科技学院
Priority to CN201510828911.8A priority Critical patent/CN105277483A/en
Publication of CN105277483A publication Critical patent/CN105277483A/en

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Abstract

The invention relates to a stretching and freely steering device for an FRP (Fiber Reinforce Plastic) rib. The stretching and freely steering device comprises a supporting base, a shaft bearing and a turntable, wherein the shaft bearing is supported on the supporting base; the turntable sleeves a shaft of the shaft bearing; the turntable is in direct contact with the FRP rib, so that the FRP rib is driven to freely steer. The defects of the problems of large loss of pre-stress and serious damage to the FRP rib of the prior art are overcome. The stretching and freely steering device has higher application value in experimental research on the external pre-stressing steering of the FRP rib.

Description

A kind of FRP muscle stretching flexible steering device
Technical field
The invention belongs to flexible steering device technical field, be specifically related to a kind of FRP muscle stretching flexible steering device, particularly relate to a kind of FRP muscle external prestressing steering test device, belong to testing equipment field.
Background technology
In house and bridge field, the structure that much there is disease needs to carry out strengthen maintenance, reinforcement means conventional at present has increasing section method for strengthening, affixing steel plate or FRP method for strengthening, parcel FRP method for strengthening, the active reinforcement means such as passive type reinforcement means and external prestressing strengthening method such as near-surface mounted FRP reinforcement method, (strain) hysteresis phenomenon that even eliminates stress is alleviated because active method for strengthening has, improve the effect of new and old material collaborative work and improve the significant advantage newly adding the passive type method for strengthening such as strength of materials utilization factor and do not have, external prestressing strengthening method obtains the research of numerous scholar.
But because in external prestressing strengthening method, presstressed reinforcing steel exposes in surrounding environment, the Anticorrosion of presstressed reinforcing steel is worth emphasis Attention question.The fibre reinforced composites (FRP) superior along with high-strength light, decay resistance are widely applied gradually in civil construction, adopt FRP muscle then can well solve as external prestressing steels the Anticorrosion that common presstressed reinforcing steel faces.But because FRP material shearing strength is low, be unsuitable for violent bending, FRP muscle is adopted to govern its application as Steering during external prestressing steels, the external prestressing steering gear of obvious routine is no longer applicable to FRP muscle, the steering gear of what some researchers proposed be applicable to FRP muscle be then usually faced with loss of prestress large, serious problem is damaged to FRP muscle.
Summary of the invention
Object of the present invention provides a kind of FRP muscle stretching flexible steering device, and comprise bearing, band axle bearing and rotating disk, described tape spool bearings is on bearing; Described rotating disk is socketed on the axle of band axle bearing; Described rotating disk directly contacts with FRP muscle, drives FRP muscle freely to turn to this.Avoid and be of the prior artly faced with the defect that loss of prestress is large, FRP muscle is damaged to serious problem.
In order to overcome deficiency of the prior art, the invention provides a kind of solution of FRP muscle stretching flexible steering device, specific as follows:
A kind of FRP muscle stretching flexible steering device, comprise bearing 4, band axle bearing 3 and rotating disk 4, described band axle bearing 3 supports on the carrier 4; Described rotating disk 4 is socketed on the axle of band axle bearing 3; Described rotating disk 4 directly contacts with FRP muscle 1, drives FRP muscle 1 freely to turn to this.
Preferably, described rotating disk 4 has different diameters, and the requirement steering angle different from FRP muscle adapting to variety classes FRP muscle steering angle with this is to the experimental study of its performance impact.
Preferably, the friction factor of described rotating disk and FRP muscle surface in contact is below 0.03.
Beneficial effect of the present invention:
1, rotating disk is undertaken being connected can freely be rotated by bearing and bearing, thus the FRP muscle contacted with disc surfaces can be driven to realize freely rotating, and significantly can reduce loss of prestress and steering gear to the damage of FRP muscle.
2, rotating disk has different diameters, can adapt to the requirement steering angle different from FRP muscle of variety classes FRP muscle steering angle to the experimental study of its performance impact.
3, rotating disk and FRP muscle surface in contact smooth, loss of prestress can be reduced further.
Accompanying drawing explanation
Fig. 1 is FRP muscle stretching flexible steering device front elevation of the present invention.
Fig. 2 is FRP muscle stretching flexible steering device side view.
Embodiment
For the problem of prior art, the present invention proposes a kind of FRP muscle stretching flexible steering device, significantly can reduce loss of prestress and steering gear to the damage of FRP muscle.
Below in conjunction with drawings and Examples, summary of the invention is described further:
With reference to shown in Fig. 1, FRP muscle stretching flexible steering device, comprise bearing 4, band axle bearing 3 and rotating disk 4, described band axle bearing 3 supports on the carrier 4, and bearing 4 described is like this to support described band axle bearing 3; Described rotating disk 4 is socketed on the axle of band axle bearing 3, and described band axle bearing is to realize freely rotating of rotating disk; Described rotating disk 4 directly contacts with FRP muscle 1, drives FRP muscle 1 freely to turn to this.Described rotating disk 4 has different diameters, and the requirement steering angle different from FRP muscle adapting to variety classes FRP muscle steering angle with this is to the experimental study of its performance impact.The friction factor of described rotating disk and FRP muscle surface in contact is below 0.03, and face of can keeping in touch like this is smooth, can reduce loss of prestress further.
Principle of work of the present invention is in the process of device assembling, first according to diameter or the model of design or test demand corner size determination rotating disk 2, then rotating disk 2, band axle bearing 3 and bearing 4 are carried out being assembled into FRP muscle stretching flexible steering device, and bearing is fixed on test design position.According to the size of test design and anchoring or stretch-draw requirement, by FRP muscle 1 through steering gear, carry out the prestressed applying of FRP muscle 1 and observation experiment phenomenon and parameter data values.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection domain all still belonging to technical solution of the present invention.

Claims (3)

1. a FRP muscle stretching flexible steering device, it is characterized in that comprising bearing, band axle bearing and rotating disk, described tape spool bearings is on bearing; Described rotating disk is socketed on the axle of band axle bearing; Described rotating disk directly contacts with FRP muscle, drives FRP muscle freely to turn to this.
2. FRP muscle stretching flexible steering device according to claim 1, is characterized in that described rotating disk has different diameters, and the requirement steering angle different from FRP muscle adapting to variety classes FRP muscle steering angle with this is to the experimental study of its performance impact.
3. FRP muscle stretching flexible steering device according to claim 1, is characterized in that the friction factor of described rotating disk and FRP muscle surface in contact is below 0.03.
CN201510828911.8A 2015-11-25 2015-11-25 Stretching and freely steering device for FRP rib CN105277483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510828911.8A CN105277483A (en) 2015-11-25 2015-11-25 Stretching and freely steering device for FRP rib

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510828911.8A CN105277483A (en) 2015-11-25 2015-11-25 Stretching and freely steering device for FRP rib

Publications (1)

Publication Number Publication Date
CN105277483A true CN105277483A (en) 2016-01-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510828911.8A CN105277483A (en) 2015-11-25 2015-11-25 Stretching and freely steering device for FRP rib

Country Status (1)

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CN (1) CN105277483A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6255546A (en) * 1985-09-04 1987-03-11 Nippon Telegr & Teleph Corp <Ntt> Optical transmission line for detecting flood and optical cable
CN1519433A (en) * 2003-01-24 2004-08-11 深圳市海川实业股份有限公司 Aramid fiber rope in engineering application for reinforcing external prestressing bridge
JP2004279083A (en) * 2003-03-13 2004-10-07 Toray Ind Inc Bending test method of frp
CN101089335A (en) * 2006-06-16 2007-12-19 北京特希达科技有限公司 Prestress rope anti-bend reinforced concrete structure and its reinforing method
CN201753501U (en) * 2010-07-16 2011-03-02 东南大学 FRP (fiber reinforced plastic) rib tensioning and anchoring device
CN102587296A (en) * 2012-02-21 2012-07-18 朔黄铁路发展有限责任公司 Self-balancing external prestressing strengthening method for bridge structure
CN102644384A (en) * 2012-03-12 2012-08-22 河海大学 Anchoring device for reinforcing reinforced concrete beam by using FRP (Fiber Reinforce Plastic) strip and using method thereof
CN102936965A (en) * 2012-11-20 2013-02-20 淮海工学院 Method for strengthening reinforced concrete beam through distributed external prestressing cables
CN205120551U (en) * 2015-11-25 2016-03-30 金陵科技学院 Tensile device that freely turns to of FRP muscle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6255546A (en) * 1985-09-04 1987-03-11 Nippon Telegr & Teleph Corp <Ntt> Optical transmission line for detecting flood and optical cable
CN1519433A (en) * 2003-01-24 2004-08-11 深圳市海川实业股份有限公司 Aramid fiber rope in engineering application for reinforcing external prestressing bridge
JP2004279083A (en) * 2003-03-13 2004-10-07 Toray Ind Inc Bending test method of frp
CN101089335A (en) * 2006-06-16 2007-12-19 北京特希达科技有限公司 Prestress rope anti-bend reinforced concrete structure and its reinforing method
CN201753501U (en) * 2010-07-16 2011-03-02 东南大学 FRP (fiber reinforced plastic) rib tensioning and anchoring device
CN102587296A (en) * 2012-02-21 2012-07-18 朔黄铁路发展有限责任公司 Self-balancing external prestressing strengthening method for bridge structure
CN102644384A (en) * 2012-03-12 2012-08-22 河海大学 Anchoring device for reinforcing reinforced concrete beam by using FRP (Fiber Reinforce Plastic) strip and using method thereof
CN102936965A (en) * 2012-11-20 2013-02-20 淮海工学院 Method for strengthening reinforced concrete beam through distributed external prestressing cables
CN205120551U (en) * 2015-11-25 2016-03-30 金陵科技学院 Tensile device that freely turns to of FRP muscle

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