CN109444030A - FRP plate material/sheet material the corrosion testing apparatus and method of self-correction prestressing force angle - Google Patents
FRP plate material/sheet material the corrosion testing apparatus and method of self-correction prestressing force angle Download PDFInfo
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- CN109444030A CN109444030A CN201811292650.2A CN201811292650A CN109444030A CN 109444030 A CN109444030 A CN 109444030A CN 201811292650 A CN201811292650 A CN 201811292650A CN 109444030 A CN109444030 A CN 109444030A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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Abstract
A kind of FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle of the present invention, including stretching rack and reaction frame, stretching rack both ends are provided with stretching anchor rod, the end that each stretching anchor rod is located on the inside of stretching rack is provided with flexural pivot, flexural pivot is connected with clamping sheet mechanism, and clamping sheet mechanism is for clamping FRP plate material/sheet material；One of stretching anchor rod passes through reaction frame, and is connected at the jack on the outside of reaction frame, and reaction spring is arranged between reaction frame and stretching rack.Whole device of the present invention and test process operation are more succinct, can ideally provide complex environment of the FRP plate material/sheet material under load and adverse circumstances coupling, and whole process and device may be repeated, and are convenient for largely having and targetedly test.
Description
Technical field
The present invention relates to civil engineering technical field of transportation, FRP plate material/sheet material of specifically a kind of self-correction prestressing force angle is rotten
Corrosion test device and method.
Background technique
Fiber-reinforced polymer (FRP) plate is made of being solidified according to a certain percentage as fiber and resin, with section
The progress of skill and the raising of composite technology, FRP plate in civil construction field using more and more extensive, especially FRP plate
Material due to its good endurance quality, high intensity, convenient and fast reinforcement means field of reinforcement application increasingly by people
Institute's affirmative, especially FRP plate is increasingly valued by the people in the field of reinforcement of concrete and steel construction in recent years.
FRP plate material due to its good endurance quality and mechanical property, in civil engineering using more and more extensive, by
It is later in the time that it occurs, the Study on Durability about the endurance quality of FRP plate material, especially in complicated adverse circumstances
Less, most of tests only consider influence of the FRP plate in single environment at present, and couple environment, especially load and environment
Coupling is the true Service Environment of FRP plate, studies less, a large amount of targetedly researchs of urgent need.
It is more about load and the current FRP tendons material of research under environment coupled action, substantially utilize bonded sleeve
Anchorage and counterforce device carry out prestressed application, this experimental rig is cumbersome, and can not reuse, and FRP tendons material
The phenomenon that being not in substantially eccentric tensioning during carrying out prestressed stretch-draw, and FRP plate material/sheet material easily occurs eccentric
The phenomenon that drawing, the data for causing tension test to measure are obviously less than normal.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of self-correction prestressing force angle
FRP plate material/sheet material corrosion testing apparatus and method.
Technical solution: in order to solve the above technical problems, a kind of FRP plate material/piece of self-correction prestressing force angle of the invention
Material corrosion testing apparatus, including stretching rack and reaction frame, stretching rack both ends are provided with stretching anchor rod, and each stretching anchor rod is located at tensioning
End on the inside of frame is provided with flexural pivot, and flexural pivot is connected with clamping sheet mechanism, and clamping sheet mechanism is for clamping FRP plate material/sheet material；Wherein one
A stretching anchor rod passes through reaction frame, and is connected at the jack on the outside of reaction frame, and counter-force is arranged between reaction frame and stretching rack
Spring.
Wherein, force sensor is set across the stretching anchor rod end of reaction frame.
Wherein, each flexural pivot one end is thread segment, and for connecting stretching anchor rod, the other end is connect by pin with intermediate plate, with
One end end face of intermediate plate connection is curved surface.
Wherein, each clamping sheet mechanism includes two intermediate plates, and the contact surface of two intermediate plates is respectively corrugated surface, and intermediate plate passes through fastening
Part is fixedly connected.
Wherein, the part that each intermediate plate is connect with FRP plate material/sheet material is arranged successively by multiple planes and curved surface to be formed.
Wherein, it is successively arranged by four plane, curved surface, curved surface, plane faces the part that each intermediate plate is connect with FRP plate material/sheet material
Column composition.
Wherein, the radian of curved surface is -5 degree to 5 degree.
Wherein, stretching rack includes bottom plate, and end plate is arranged in bottom plate both ends, and support plate, each end plate difference are provided between end plate
Connect a stiffening plate.
A kind of FRP plate material/sheet material corrosion tests, comprising the following steps:
S1: FRP plate material/sheet material both ends are clamped by clamping sheet mechanism respectively, use bolt fastening；
S2: clamping sheet mechanism is connect by pin with flexural pivot；
S3: stretching anchor rod and stretching rack and flexural pivot are separately connected；
S4: one of stretching anchor rod is connect with reaction frame, reaction spring is set between reaction frame and stretching rack；
S5: apply prestressing force to whole device using jack, and guarantee that reaction spring can effectively carry out stress loss benefit
It repays；
S6: apply prestressing force and after the completion remove jack and force snesor, and in the institute in addition to FRP plate material/sheet material
There is one layer of anti-corrosion epoxy resin of painting on device；
S7: it places a device into corrosive environment and carries out corrosion test；
S8: after corrosion, clamping sheet mechanism being removed together with FRP plate material/sheet material, and tensile property survey is carried out on testing machine
Examination；
S9: removing clamping sheet mechanism after test, the epoxy resin removal of each clip surface is i.e. reusable, carries out
Next batch test.
The utility model has the advantages that the invention has the following advantages:
Whole device and test process operation are more succinct, can ideally provide FRP plate material/sheet material in load and severe
Complex environment under environment coupled action, and whole process and device may be repeated, and be convenient for largely having specific aim
Test.
Detailed description of the invention
Fig. 1 is invention stretching rack schematic diagram；
Fig. 2 is flexural pivot schematic diagram of the present invention；
Fig. 3 is that inner surface of the present invention has ripple intermediate plate and pin side view；
Fig. 4 is that inner surface of the present invention has ripple intermediate plate thin portion front view；
Fig. 5 is the whole loading device schematic diagram of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figs. 1-5, FRP plate material/sheet material corrosion testing apparatus of a kind of self-correction prestressing force angle, including stretching rack
4 and reaction frame 7,4 both ends of stretching rack are provided with stretching anchor rod 1, and the end that each stretching anchor rod 1 is located at 4 inside of stretching rack is provided with
Flexural pivot 2, flexural pivot 2 are connected with clamping sheet mechanism 3, and clamping sheet mechanism 3 is for clamping FRP plate material/sheet material 5；One of stretching anchor rod 1 is worn
Reaction frame 7 is crossed, and connects the jack 8 that 7 outside of reaction frame is set, multiple counter-force bullets are set between reaction frame 7 and stretching rack 4
Spring 6.Across 1 end of stretching anchor rod of reaction frame 7, force sensor 9 is set.Each 2 one end of flexural pivot is thread segment 21, thread segment 21
There is the screw hole 211 for being threadedly coupled with stretching anchor rod 1 in inside, and 2 other end of flexural pivot is intermediate plate linkage section 22, intermediate plate linkage section 22
Upper setting pin 23, pin 23 is connect with clamping sheet mechanism 3, and one end end face connecting with clamping sheet mechanism 3 is curved surface 221.Each intermediate plate
Mechanism 3 includes two intermediate plates 31, and the contact surface of two intermediate plates 31 is respectively corrugated surface, is connected between intermediate plate 31 by the way that fastener is fixed
It connects.The part that each intermediate plate 31 is connect with FRP plate material/sheet material 5 is arranged successively by multiple planes and curved surface to be formed, specifically, each folder
The part that piece is connect with FRP plate material/sheet material 5 is arranged successively group by 314 4 plane 311, curved surface 312, curved surface 313, plane faces
At.Intermediate plate 31 uses undulatory inner surface, it is therefore intended that the mechanical snap power for increasing BFRP sheet material and intermediate plate prevents from sliding.
The radian of curved surface 312 is -5 degree, and the radian of curved surface 313 is 5 degree.Stretching rack 4 includes bottom plate, and end plate 41, end is arranged in bottom plate both ends
Support plate 43 is provided between plate 41, each end plate 41 is separately connected a stiffening plate 42.
The present invention also provides a kind of FRP plate material/sheet material corrosion tests, comprising the following steps:
S1: FRP plate material/5 both ends of sheet material are passed through into clamping sheet mechanism 3 respectively and are clamped, bolt fastening is used；
S2: clamping sheet mechanism 3 is connect by pin 23 with flexural pivot 2；
S3: stretching anchor rod 1 and stretching rack 4 and flexural pivot 2 are separately connected；
S4: one of stretching anchor rod 1 is connect with reaction frame 7, and counter-force bullet is arranged between reaction frame 7 and stretching rack 4
Spring 6；
S5: apply prestressing force to whole device using jack 8, and guarantee that reaction spring 6 can effectively carry out stress loss
Compensation；
S6: apply prestressing force and after the completion remove jack 8 and force snesor 9, and in addition to FRP plate material/sheet material 5
One layer of anti-corrosion epoxy resin is applied on all devices；
S7: it places a device into corrosive environment and carries out corrosion test；
S8: after corrosion, clamping sheet mechanism is removed together with FRP plate material/sheet material 5, tensile property is carried out on testing machine
Test；
S9: removing clamping sheet mechanism 3 after test, the epoxy resin removal on each 31 surface of intermediate plate is i.e. reusable,
Carry out next batch test.
Plate size used in stretching rack 4 of the invention, reaction frame 7 and threaded rod size are true all in accordance with the load to be applied
It is fixed, to guarantee not generating device component creep during prestress application process and long-term stress test, stress loss is caused,
Trying to stop people from fighting each other 4 is that its specific size by being welded is determined according to the test sample dimensions of testing standard defined, general FRP plate
The effective length and specimen thickness of 5 tensile property of material/sheet material test test specimen used are related (GBT 3354-2014), stretching rack 4
Length is taken as 480mm~550mm.
BFRP sheet material is made in such a way that hand is pasted, and BFRP sheet material is cut into 15mm wide, the test specimen of 300mm long.It will
BFRP sheet material end is sandwiched in clamping sheet mechanism 3, is guaranteed the basic centering of BFRP sheet material and is fitted in intermediate plate inner surface, then uses bolt
Upper and lower two panels intermediate plate 31 is tightened, in order to guarantee that effect can also coat one layer of high-strength epoxy resin, intermediate plate 31 in intermediate plate inner surface
Guarantee without especially sharp corner angle.After test specimen is made, intermediate plate 31 is linked together by pin 23 with flexural pivot 2,
It to be manually operated after the completion, flexural pivot 2 is rotated in BFRP sheet plane, guarantee that flexural pivot 2 can flexible rotating.When 2 tensioning of flexural pivot
Self-balancing principle is that flexural pivot 2 and the ripply intermediate plate 31 of inner surface band are mechanically connected by pin 23, this connection type makes flexural pivot 2
It can be turned in FRP plate material/5 plane of sheet material, automatically adjust the direction of intermediate plate 31, avoid eccentric tension.By flexural pivot 2 and open
It draws screw rod 1 to be connected to one piece and tighten end fixture nut, the tensioning screw rod 1 of the other end is passed through reaction frame 7 by reaction plate
It is interior, and connect jack 8 and the progress prestressed stretch-draw of force snesor 9.Since progress is long-term mechanical property research, when tensioning
Certain prestressing force surplus should be retained, the standing of certain time is carried out after tensioning, observe this whether there is pre- answer in the process
Power loss.Pay special attention to, in order to which guarantee test real result is reliable, can really reflect the case where adverse circumstances are coupled with load,
Necessary measure should be taken to guarantee the prestressing force of long-term behaviour process.
Existing apparatus is typically all to be directed to FRP tendons material, can be ignored the influence of eccentric tension by bond type anchorage, and plate
Apply prestressing force can not ignore eccentric tension influence, the present apparatus by flexural pivot 2 can autobalance and centering during loading, than
The preferable influence for solving eccentric tension, furthermore the present apparatus is strand tapered anchorage, simple and convenient, reusable.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle, it is characterised in that: including stretching rack and
Reaction frame, stretching rack both ends are provided with stretching anchor rod, and the end that each stretching anchor rod is located on the inside of stretching rack is provided with flexural pivot, flexural pivot
It is connected with clamping sheet mechanism, clamping sheet mechanism is for clamping FRP plate material/sheet material；One of stretching anchor rod passes through reaction frame, and connects
Jack on the outside of reaction frame, is arranged reaction spring between reaction frame and stretching rack.
2. FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle according to claim 1, feature exist
In: across the stretching anchor rod end of reaction frame, force sensor is set.
3. FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle according to claim 1, feature exist
In: each flexural pivot one end is thread segment, and for connecting stretching anchor rod, the other end is connect with intermediate plate by pin, connect with intermediate plate
One end end face is curved surface.
4. FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle according to claim 1, feature exist
In: each clamping sheet mechanism includes two intermediate plates, and the contact surface of two intermediate plates is respectively corrugated surface, and intermediate plate connects by the way that fastener is fixed
It connects.
5. FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle according to claim 4, feature exist
In: the part that each intermediate plate is connect with FRP plate material/sheet material is arranged successively by multiple planes and curved surface to be formed.
6. FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle according to claim 5, feature exist
In: the part that each intermediate plate is connect with FRP plate material/sheet material is arranged successively and is formed by four plane, curved surface, curved surface, plane faces.
7. FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle according to claim 6, feature exist
In: the radian of curved surface is -5 degree to 5 degree.
8. FRP plate material/sheet material corrosion testing apparatus of self-correction prestressing force angle according to claim 1, feature exist
In: stretching rack includes bottom plate, and bottom plate both ends are arranged end plate, are provided with support plate between end plate, each end plate is separately connected a reinforcement
Plate.
9. a kind of FRP plate material/sheet material corrosion tests, which comprises the following steps:
S1: FRP plate material/sheet material both ends are clamped by clamping sheet mechanism respectively, use bolt fastening；
S2: clamping sheet mechanism is connect by pin with flexural pivot；
S3: stretching anchor rod and stretching rack and flexural pivot are separately connected；
S4: one of stretching anchor rod is connect with reaction frame, reaction spring is set between reaction frame and stretching rack；
S5: apply prestressing force to whole device using jack, and guarantee that reaction spring can effectively carry out stress loss compensation；
S6: apply prestressing force and after the completion remove jack and force snesor, and in all dresses in addition to FRP plate material/sheet material
It sets and applies one layer of anti-corrosion epoxy resin；
S7: it places a device into corrosive environment and carries out corrosion test；
S8: after corrosion, clamping sheet mechanism being removed together with FRP plate material/sheet material, and tensile property test is carried out on testing machine；
S9: removing clamping sheet mechanism after test, the epoxy resin removal of each clip surface is i.e. reusable, carries out next
Batch experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811292650.2A CN109444030A (en) | 2018-11-01 | 2018-11-01 | FRP plate material/sheet material the corrosion testing apparatus and method of self-correction prestressing force angle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811292650.2A CN109444030A (en) | 2018-11-01 | 2018-11-01 | FRP plate material/sheet material the corrosion testing apparatus and method of self-correction prestressing force angle |
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| CN109444030A true CN109444030A (en) | 2019-03-08 |
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| CN201811292650.2A Pending CN109444030A (en) | 2018-11-01 | 2018-11-01 | FRP plate material/sheet material the corrosion testing apparatus and method of self-correction prestressing force angle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813604A (en) * | 2019-03-21 | 2019-05-28 | 华侨大学 | Test the experimental rig and its method of the test of steel plate synergisticing performance |
| CN110702516A (en) * | 2019-10-18 | 2020-01-17 | 东莞理工学院 | Direct tensile test device for FRP (fiber reinforced Plastic) reinforcement concrete member and use method |
| CN114428015A (en) * | 2022-01-06 | 2022-05-03 | 中国建筑第八工程局有限公司 | Device and method for testing prestress loss of carbon fiber reinforced composite material rib |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813604A (en) * | 2019-03-21 | 2019-05-28 | 华侨大学 | Test the experimental rig and its method of the test of steel plate synergisticing performance |
| CN109813604B (en) * | 2019-03-21 | 2024-01-05 | 华侨大学 | Test device and method for testing synergistic performance of steel plates |
| CN110702516A (en) * | 2019-10-18 | 2020-01-17 | 东莞理工学院 | Direct tensile test device for FRP (fiber reinforced Plastic) reinforcement concrete member and use method |
| CN110702516B (en) * | 2019-10-18 | 2024-04-19 | 东莞理工学院 | FRP reinforcement concrete member direct tensile test device and use method |
| CN114428015A (en) * | 2022-01-06 | 2022-05-03 | 中国建筑第八工程局有限公司 | Device and method for testing prestress loss of carbon fiber reinforced composite material rib |
| CN114428015B (en) * | 2022-01-06 | 2024-02-06 | 中国建筑第八工程局有限公司 | Device and method for testing prestress loss of carbon fiber reinforced composite bar |
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