CN204630864U - A kind of test unit to the constant temperature stress corrosion simultaneously of many FRP muscle - Google Patents
A kind of test unit to the constant temperature stress corrosion simultaneously of many FRP muscle Download PDFInfo
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- CN204630864U CN204630864U CN201520336741.7U CN201520336741U CN204630864U CN 204630864 U CN204630864 U CN 204630864U CN 201520336741 U CN201520336741 U CN 201520336741U CN 204630864 U CN204630864 U CN 204630864U
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- frp muscle
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- soaking box
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Abstract
The utility model relates to a kind of test unit to the constant temperature stress corrosion simultaneously of many FRP muscle, it comprises reaction frame, be positioned at reaction frame and be connected with soaking box and the stress test part of temperature controller, the equal correspondence of left and right side plate of soaking box offers some perforatings, the left and right side plate of soaking box vertically offers draw-in groove above perforating, be sealedly connected with clamp in draw-in groove, the end face of soaking box is provided with the sliding door that can move horizontally; Stress test part comprises many FRP muscle, stretching and anchoring device comprises bonding sleeve ground tackle and worm screw, the two ends of each FRP muscle respectively connect a bonding sleeve ground tackle and a worm screw in turn, and one of them worm screw is connected with worm gear, and described FRP muscle is provided with foil gauge; Reaction frame comprises reaction frame framework and is positioned at the reaction frame side plate of left and right side, and worm screw passes from arranged on left and right sides respectively and is fixed on the side plate of reaction frame.The semipilot section of this device only stress corrosion FRP muscle test specimen, operates simpler.
Description
Technical field
The utility model belongs to FRP muscle long-term mechanical property technical field of measurement and test, is specifically related to a kind of test unit realizing simultaneously carrying out many FRP muscle constant temperature stress corrosion.
Background technology
The infrastructure permanance degradation that steel bar corrosion causes, causes huge economic loss.Therefore improving infrastructure permanance is the major issue that countries in the world economy and social development face.The appearance of fibre reinforced composites (Fiber Reinforced Polymer is called for short FRP), brings hope for promoting infrastructure permanance.As compared to structured materials such as traditional steel, reinforcing bar and concrete, FRP material has the remarkable advantages such as excellent decay resistance, higher specific strength, specific modulus and good anti-fatigue performance, is therefore considered to the best substitute solving steel bar corrosion problem.
But because the history of FRP muscle in civil engineering work is shorter, the inspection of permanance in Practical Project is less, and the research therefore for its permanance is particularly important.In the middle of the coupling being in multiple adverse environmental factors and load in the practical application of FRP muscle.Although FRP material has excellent decay resistance under single factor test, how on earth the endurance quality of FRP muscle/Suo Ben under various factors coupling effect there is no definite conclusion, and the decay resistance research especially under effect of stress is very few especially.Present stage major part test simulation environment more single, well can not reflect actual conditions.How to consider the coupling of corrosive atmosphere and stress, become current urgent problem.
In prior art, constant temperature salt solusion soaking box is existing a lot, but can lack very much the test unit that FRP muscle realizes stress and Environmental coupling accelerated corrosion, and still there is thermostatic control difficulty, test specimen complicated operation, many FRP muscle can not be realized be in same corrosion environment and test specimen and take up room the shortcoming such as large in the existing device that can realize stress corrosion on a small quantity simultaneously.
Utility model content
The utility model object is to overcome prior art defect, a kind of test unit realizing simultaneously carrying out many FRP muscle constant temperature stress corrosion is provided, its case inner volume occupation rate is little, temperature is more prone to control, operation is more simple, can realize the stress corrosion simultaneously of many test specimens and monitoring.
For achieving the above object, the utility model adopts following technical scheme:
A kind of test unit to the constant temperature stress corrosion simultaneously of many FRP muscle, it comprises reaction frame, be positioned at reaction frame and be connected with soaking box and the stress test part of temperature controller, the equal correspondence of left and right side plate of described soaking box offers some perforatings, the left and right side plate of soaking box vertically offers draw-in groove above perforating, be sealedly connected with clamp in draw-in groove, the end face of soaking box is provided with the sliding door that can move horizontally; Described stress test part comprises many FRP muscle, bonding sleeve ground tackle and worm screw, and the two ends of every root FRP muscle respectively connect a bonding sleeve ground tackle and a worm screw in turn, and one of them worm screw is connected with worm gear, and described FRP muscle is provided with foil gauge; Described reaction frame comprises reaction frame framework and is positioned at the reaction frame side plate of left and right side, and worm screw passes from arranged on left and right sides respectively and is fixed on the side plate of reaction frame; Described FRP muscle through soaking box, is filled with flexible sealing material between FRP muscle and perforating in perforating; Many FRP muscle be arranged in parallel, and the left and right side plate of FRP muscle and soaking box is perpendicular, are parallel to each other between the left and right side plate of soaking box and the side plate of reaction frame.
Concrete, the two ends of described FRP muscle are fixedly connected with one end of bonding sleeve ground tackle respectively by cementing agent, and the other end of bonding sleeve ground tackle is connected with worm thread; Described worm screw is passed from arranged on left and right sides respectively and is fixed on the side plate of reaction frame by nut.Also pad is provided with between nut and side plate.
Further preferably, forward and backward of described reaction frame framework is provided with diagonal brace, to avoid the frame deformation of reaction frame.
Adopt above-mentioned test unit to the test method of many FRP muscle constant temperature stress corrosion simultaneously, it comprises the following steps:
1) in the bonding sleeve ground tackle end stretching into FRP muscle, pour into cementing agent (epoxy resin), then maintenance reaches design strength to cementing agent;
2) take away clamp, FRP muscle is also sealed through perforating and installs clamp; Connected with worm thread respectively by the other end of bonding sleeve ground tackle, the other end of worm screw is passed from arranged on left and right sides respectively and is fixed on the side plate of reaction frame; One of them worm screw connects worm gear;
3) worm gear, worm screw and reaction frame is utilized to carry out stretch-draw and stress adjustment to FRP muscle;
4) utilize the foil gauge that FRP muscle is arranged, stress monitoring is carried out to FRP muscle body;
5) filling flexible encapsulant between FRP muscle and perforating, pours into alkali lye and closes sliding door in soaking box, controls the temperature of alkali lye and keeps constant temperature, can realize carrying out stress corrosion to many FRP muscle under equivalent environment simultaneously by temperature controller;
6) whether periodic detection FRP muscle there is stress loss, and by regulating worm and gear to carry out stress compensation to FRP muscle, makes it remain on constant stress level for a long time;
7) after off-test, take off clamp, take out FRP muscle and carry out tension test test.
In the utility model, whether the foil gauge of FRP muscle surface mount, be can be used for monitor and forecast applies stress size to FRP muscle, detect stress and lose and regularly compensated by worm and gear, thus make FRP muscle can keep constant stress level for a long time.Dipping by lye environment is provided by soaking box, the left and right side plate of soaking box is arranged with multiple perforating, often pair of perforating is worn a FRP muscle, many FRP muscle be arranged in parallel, the left and right side plate of FRP muscle and soaking box is perpendicular, and be parallel to each other between the left and right side plate of soaking box and the side plate of reaction frame (i.e. soaking box placement orthogonal with reaction frame); Just stretch-draw can easily be carried out on reaction frame after FRP muscle two ends are fixing.Soaking box inside can hold many FRP muscle simultaneously, and can ensure there are enough spacing between FRP muscle test specimen, and only the semipilot district of FRP muscle is carried out to the stress corrosion of constant-temperature constant-pH-value, and corrosion can not be produced to the bonding sleeve ground tackle of end, worm screw and reaction frame etc.
The utility model test unit carries out stress corrosion under FRP muscle can be made to be in constant tension stress, steady temperature and identical dipping by lye environment for a long time, and process of the test is easy, easy to operate, has stronger designability simultaneously, and technique effect is given prominence to.Compared to the prior art, the beneficial effects of the utility model:
1) utilizing worm and gear to carry out stress applies simple and convenient, and cooperation foil gauge can realize the accurate measurements to FRP muscle stress, can realize the accurate control to FRP muscle stress by setting nut;
2) FRP muscle test specimen is little in soaking box inner volume occupation rate, can carry out the accelerated stress corrosion test of many FRP muscle simultaneously;
3) in same immersion casing, carry out the alkaline corrosion test of constant temperature, permanent pH value, the systematic error of test can be reduced;
4) connect temperature controller in soaking box, control alkali lye constant temperature by temperature controller, make temperature more truly and easily control.Dipping by lye case not only provides alkali liquid corrosion environment, adopts heating and the control of temperature control system realization to box house solution temperature simultaneously;
5) achieve only to the corrosion of FRP muscle test specimen, and corrosion can not be produced to equipment such as bonding sleeve ground tackle, worm screw and reaction frames, thus make equipment can Long-Time Service.
Accompanying drawing explanation
Fig. 1 is the connection status schematic diagram of FRP muscle and bond sleeve ground tackle, worm screw;
Fig. 2 is the front view of test unit described in the utility model;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the vertical view of Fig. 2;
In figure, 1 is FRP muscle, and 2 is bonding sleeve ground tackle, and 3 is worm screw, 4 is worm gear, and 5 is foil gauge, and 6 is nut, 7 is pad, and 8 is soaking box, and 9 is reaction frame, 10 is perforating, and 11 is flexible sealing material, and 12 is reaction frame left plate, 13 is reaction frame right plate, and 14 is temperature controller, and 15 is sliding door, 16 is reaction frame framework, and 17 is clamp, and 18 is diagonal brace.
Embodiment
Do to introduce in detail further to the technical solution of the utility model below in conjunction with embodiment, but protection domain of the present utility model is not limited thereto.
embodiment 1
As shown in Figures 1 to 4, a kind of test unit to the constant temperature stress corrosion simultaneously of many FRP muscle, it comprises reaction frame 9, be positioned at reaction frame 9 and be connected with soaking box 8 and the stress test part of temperature controller 14, the equal correspondence of left and right side plate of described soaking box 8 offers some perforatings 10, the left and right side plate of soaking box 8 vertically offers draw-in groove above perforating 10, be sealedly connected with clamp 17 in draw-in groove, the end face of soaking box 8 is provided with the sliding door 15 that can move horizontally; Described stress test part comprises many FRP muscle 1, bonding sleeve ground tackle 2 and worm screw 3, the two ends of every root FRP muscle 1 respectively connect a bonding sleeve ground tackle 2 and a worm screw 3 in turn, one of them worm screw 3 is connected with worm gear 4, and described FRP muscle 1 is provided with foil gauge 5; Described reaction frame 9 comprises reaction frame framework 16, is positioned at the reaction frame left plate 12 of left and right side and reaction frame right plate 13, and worm screw 3 passes from arranged on left and right sides respectively and is fixed on reaction frame left plate 12 and reaction frame right plate 13; Described FRP muscle 1 passes and is filled with flexible sealing material 11 between soaking box 8, FRP muscle 1 and perforating 10 in perforating 10; Many FRP muscle 1 be arranged in parallel, and FRP muscle 1 is perpendicular with the left and right side plate of soaking box 8, are parallel to each other between the left and right side plate of soaking box 8 and reaction frame left plate 12, reaction frame right plate 13.
The two ends of described FRP muscle 1 are fixedly connected with one end of bonding sleeve ground tackle 2 respectively by cementing agent, and the other end of bonding sleeve ground tackle 2 is threaded with worm screw 3; Described worm screw 3 passes from arranged on left and right sides respectively and is fixed on reaction frame left plate 12 and reaction frame right plate 13 by nut 6.Pad 7 is also provided with between nut 6 and reaction frame left plate 12, reaction frame right plate 13.Forward and backward of described reaction frame framework 16 is provided with diagonal brace 18, to avoid the frame deformation of reaction frame.
Adopt above-mentioned test unit to the test method of many FRP muscle constant temperature stress corrosion simultaneously, it comprises the following steps:
1) in bonding sleeve ground tackle 2 end stretching into FRP muscle 1, pour into cementing agent (epoxy resin), then maintenance reaches design strength to cementing agent;
2) take away clamp 17, FRP muscle 1 is also sealed through perforating 10 and installs clamp 17; Be threaded with worm screw 3 respectively by the other end of bonding sleeve ground tackle 2, the other end of worm screw 3 is passed from arranged on left and right sides respectively and is fixed on reaction frame left plate 12 and reaction frame right plate 13; One of them worm screw 3 connects worm gear 4;
3) worm gear 4, worm screw 3 and reaction frame 9 pairs of FRP muscle 1 are utilized to carry out stretch-draw and stress adjustment;
4) utilize the foil gauge 5 that FRP muscle 1 is arranged, stress monitoring is carried out to FRP muscle body;
5) filling flexible encapsulant 11 between FRP muscle 1 and perforating 10, in soaking box 8, pour into alkali lye and close sliding door 15, control the temperature of alkali lye by temperature controller 14 and keep constant temperature, can realize carrying out stress corrosion to many FRP muscle under equivalent environment simultaneously;
6) whether periodic detection FRP muscle there is stress loss, and by regulating worm and gear to carry out stress compensation to FRP muscle, makes it remain on constant stress level for a long time;
7) after off-test, take off clamp 17, take out FRP muscle and carry out tension test test.
In the utility model, reaction frame 9 for bearing in stretching process the counter-force needing to apply, and keeps the stress level of FRP muscle 1 invariable in test of long duration process, has enough rigidity and load-bearing capacity.The material of reaction frame 9 is steel, assembles by steel plate and frame welding.Muscle material sample dimensions determination reaction frame size during design needed for the pulling test of FRP muscle material 1, according to the concrete size of the capacity determination soaking box of test specimen in reaction frame 9 size and soaking box 8.The left and right side board size of reaction frame 9 through the bearing capacity calculation of local compression, shearing and integrally bending, must determine the thickness of side plate.The support of steel crossbar (i.e. diagonal brace 18) as reaction frame is set forward and backward of framework 16 of reaction frame 9, guarantees bearing capacity and the stability of reaction frame 9.Reaction frame 9 placement orthogonal with soaking box 8, reaction frame 9 is positioned over outside soaking box 8.
The utility model device can realize only carrying out stress corrosion to the semipilot section of FRP muscle test specimen, and can not produce corrosion to equipment such as bonding sleeve ground tackle, worm screw and reaction frames, thus makes equipment can Long-Time Service.
Claims (3)
1. the test unit to the constant temperature stress corrosion simultaneously of many FRP muscle, it is characterized in that, comprise reaction frame, be positioned at reaction frame and be connected with soaking box and the stress test part of temperature controller, the equal correspondence of left and right side plate of described soaking box offers some perforatings, the left and right side plate of soaking box vertically offers draw-in groove above perforating, be sealedly connected with clamp in draw-in groove, the end face of soaking box is provided with the sliding door that can move horizontally; Described stress test part comprises many FRP muscle, bonding sleeve ground tackle and worm screw, and the two ends of every root FRP muscle respectively connect a bonding sleeve ground tackle and a worm screw in turn, and one of them worm screw is connected with worm gear, and described FRP muscle is provided with foil gauge; Described reaction frame comprises reaction frame framework and is positioned at the reaction frame side plate of left and right side, and worm screw passes from arranged on left and right sides respectively and is fixed on the side plate of reaction frame; Described FRP muscle through soaking box, is filled with flexible sealing material between FRP muscle and perforating in perforating; Many FRP muscle be arranged in parallel, and the left and right side plate of FRP muscle and soaking box is perpendicular, are parallel to each other between the left and right side plate of soaking box and the side plate of reaction frame.
2. as claimed in claim 1 to the test unit of many FRP muscle constant temperature stress corrosion simultaneously, it is characterized in that, the two ends of described FRP muscle are fixedly connected with one end of bonding sleeve ground tackle respectively by cementing agent, and the other end of bonding sleeve ground tackle is connected with worm thread; Described worm screw is passed from arranged on left and right sides respectively and is fixed on the side plate of reaction frame by nut.
3., as claimed in claim 1 to the test unit of many FRP muscle constant temperature stress corrosion simultaneously, it is characterized in that, forward and backward of described reaction frame framework is provided with diagonal brace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336741.7U CN204630864U (en) | 2015-05-22 | 2015-05-22 | A kind of test unit to the constant temperature stress corrosion simultaneously of many FRP muscle |
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| CN201520336741.7U CN204630864U (en) | 2015-05-22 | 2015-05-22 | A kind of test unit to the constant temperature stress corrosion simultaneously of many FRP muscle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807712A (en) * | 2015-05-22 | 2015-07-29 | 郑州大学 | Device and method for simultaneously testing constant-temperature stress corrosion of multiple FRP (Fiber Reinforced Polymer) reinforcements |
| CN110501280A (en) * | 2019-08-30 | 2019-11-26 | 广东工业大学 | A kind of corrosion simulated device and method for prestressed stretch-draw anchorage |
| CN113188923A (en) * | 2021-04-13 | 2021-07-30 | 广东海洋大学 | Active hydraulic servo boundary adjustable beam column structure bending, shearing and pressing test device |
-
2015
- 2015-05-22 CN CN201520336741.7U patent/CN204630864U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807712A (en) * | 2015-05-22 | 2015-07-29 | 郑州大学 | Device and method for simultaneously testing constant-temperature stress corrosion of multiple FRP (Fiber Reinforced Polymer) reinforcements |
| CN110501280A (en) * | 2019-08-30 | 2019-11-26 | 广东工业大学 | A kind of corrosion simulated device and method for prestressed stretch-draw anchorage |
| CN113188923A (en) * | 2021-04-13 | 2021-07-30 | 广东海洋大学 | Active hydraulic servo boundary adjustable beam column structure bending, shearing and pressing test device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20200522 |
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| CF01 | Termination of patent right due to non-payment of annual fee |