CN110186751A - A kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test - Google Patents
A kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test Download PDFInfo
- Publication number
- CN110186751A CN110186751A CN201910413766.5A CN201910413766A CN110186751A CN 110186751 A CN110186751 A CN 110186751A CN 201910413766 A CN201910413766 A CN 201910413766A CN 110186751 A CN110186751 A CN 110186751A
- Authority
- CN
- China
- Prior art keywords
- clamp plate
- cfrp
- pultrusion
- lower clamp
- light circle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000004918 carbon fiber reinforced polymer Substances 0.000 title claims abstract description 41
- 238000010621 bar drawing Methods 0.000 title claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims abstract description 17
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001238 6063-T5 aluminium alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- G01N3/02—Details
- G01N3/04—Chucks
-
- 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
-
- 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
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of clamping plate type anchorages for light circle pultrusion CFRP bar drawing test; it is made of anchorage ontology; the anchorage ontology includes upper clamp plate and lower clamp plate; the upper clamp plate and the corresponding position of lower clamp plate are symmetrically set with bolt hole; the bolt through the upper clamp plate and lower clamp plate is provided in the bolt hole; middle part setting on the inside of the upper clamp plate and lower clamp plate is fluted; it is provided with the protective case of the hollow structure for placing test CFRP stick in the groove, is also symmetrically arranged with hinge hole on the upper clamp plate and lower clamp plate.The present invention can be improved the anchoring effect of light circle CFRP bar.
Description
Technical field
The present invention relates to the technical fields of civil engineering structure experiment, more particularly, to one kind for light circle pultrusion
The clamping plate type anchorage of CFRP bar drawing test.
Background technique
It builds a bridge etc. in the construction of engineerings, often to use drag-line component, thus, in civil engineering test, usually need
Test the tensile strength of the material for manufacturing Cable Structure.Carbon fibre reinforced composite (abbreviation CFRP) has quality
Gently, the features such as intensity is high, corrosion-resistant, endurance fracture, is not easy creep, linear expansion coefficient and low relaxation rate, thus be considered as
The ideal material for substituting steel production prestressed cable component, can improve the comprehensive performance of Cable Structure.
Light justifies pultrusion CFRP bar, i.e., after bar pultrusion, it is current CFRP stick that appearance, which is in the CFRP bar of light round shape,
One of main Types.Unlike screw thread CFRP stick, light circle pultrusion CFRP stick surface is smooth, it is difficult to will using cementing material
It is anchored, and easily causes the lateral damage of CFRP stick using strand tapered anchorage, and the tensile strength of bar is caused to be difficult to sufficiently
It embodies, light justifies the test of drawing and extruding bar and using also more difficult.Therefore, a kind of more effective test anchor is needed in the prior art
Tool anchors light circle pultrusion CFRP bar.
Summary of the invention
In view of the deficiency of the prior art, the invention proposes it is a kind of can the CFRP stick to different-diameter carry out anchor
Solid for light circle pultrusion CFRP bar drawing test clamping plate type anchorage.
To achieve the above object, the present invention provides following technical proposals and is achieved:
A kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test, is made of, the anchorage anchorage ontology
Ontology includes upper clamp plate and lower clamp plate, and the upper clamp plate and the corresponding position of lower clamp plate are symmetrically set with bolt hole, described
The bolt through the upper clamp plate and lower clamp plate is provided in bolt hole, the middle part on the inside of the upper clamp plate and lower clamp plate is provided with
Groove is provided with the protective case of the hollow structure for placing test CFRP stick, the upper clamp plate and lower folder in the groove
Hinge hole is also symmetrically arranged on plate.
Screw thread is provided in the groove.
Indentation is provided in the protective case.
The protective case is made of aluminium alloy.
Compared with the prior art, the invention has the advantages that: tested CFRP bar is pressed from both sides using clamping plate with groove
Tightly, and by inner wall impressed protective case is set to wrap up and be tested tested CFRP bar, is avoiding bar by cross
To while damage, increase the frictional force of CFRP bar and protective case inner wall, preferably anchoring light circle CFRP bar, and makes light
The stress test of circle CFRP bar drawing is more accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the clamping plate type anchorage of light circle pultrusion CFRP bar drawing test.
Fig. 2 is the overlooking structure diagram for the clamping plate type anchorage of light circle pultrusion CFRP bar drawing test.
Fig. 3 is the schematic view of the front view for the clamping plate type anchorage of light circle pultrusion CFRP bar drawing test.
Fig. 4 is the side structure schematic view for the clamping plate type anchorage of light circle pultrusion CFRP bar drawing test.
Fig. 5 is the structural schematic diagram of lower clamp plate.
Appended drawing reference: 1-CFRP stick, 2- protective case, 3- bolt, 4- upper clamp plate, 5- lower clamp plate, 6- bolt hole, 7- are hinged
Hole, 8- groove.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is further elaborated.
Clamping plate type anchorage for light circle pultrusion CFRP bar drawing test as shown in Figs 1-4, is made of anchorage ontology,
Anchorage ontology includes upper clamp plate 4 and lower clamp plate 5, and upper lower clamp plate is made of No. 45 carbon steels, and upper clamp plate 4 and lower clamp plate 5 are corresponding
Position is symmetrically set with bolt hole 6, and M10 high-strength bolt 3 passes through the bolt hole 6 of upper clamp plate 4 and lower clamp plate 5,4 He of upper clamp plate
The middle part of 5 inside of lower clamp plate is provided with the groove 8 for being internally provided with screw thread, is provided in groove 8 and uses CFRP for placing test
The protective case 2 of the hollow structure of stick 1, protective case 2 are made of the aluminium alloy of 6063-T5 aluminium, in order to increase protective case 2 with
The frictional force of CFRP stick 1 is provided with indentation in protective case 2, and the internal diameter of protective case 2 mutually agrees with the diameter of CFRP stick 1；Upper clamp plate
4 and lower clamp plate 5 on be also symmetrically arranged with hinge hole 7.
As shown in figure 5, the groove 8 of lower clamp plate 5 is located on the center line of the left-half of lower clamp plate 5, six bolts hole 6 divide
It is divided into three groups in pairs, every group of bolt hole 6 is symmetrically distributed in the two sides of groove 8, under the hinge hole 7 on lower clamp plate 5 is located at
The right half part of clamping plate 5, upper clamp plate 4 and lower clamp plate 5 are symmetrical above and below.
When using the anchorage, upper and lower two panels protective case 2 is fastened, and the T700 grade CFRP stick 1 that the diameter of test is 5mm is wrapped
It wraps, upper and lower two panels protective case 2 cooperates with the groove 8 on upper lower clamp plate respectively, good position is adjusted, by upper clamp plate 4 and lower clamp plate 5
It fastens, then upper clamp plate 4 is aligned in pairs with the bolt hole 6 on lower clamp plate 5, and the hinge hole 7 of upper lower clamp plate is aligned, by bolt 3
Across bolt hole 6, pretightning force is applied to bolt 3 with torque wrench, bolt 3 is fastened, then two same above-mentioned anchorages are divided
It is not clipped in tested 1 both ends of CFRP stick, hinge hole 7 connects cupping machine, and the failure mode to bar is that middle part is non-anchored
The explosive fracture of section, three groups of 3 torque values of bolt are 30Nm, 45Nm, 60Nm respectively, it can be achieved that anchoring strength 2650MPa.
, can be by changing 8 diameter of groove of anchorage for the CFRP bar of different-diameter, and adjust the torque of bolt 3, to realize pair
The anchoring of the light circle CFRP bar of different-diameter.The clamping plate type anchorage applies extruding force by bolt 3 and steel clamp plate, and passes through guarantor
Sheath 2 alleviates stress concentration, achieves good anchoring effect.
What has been described above is only a preferred embodiment of the present invention, but the invention is not limited to above-mentioned specific embodiment parties
Formula without departing from the concept of the premise of the invention, can also be made several for those of ordinary skill in the art
Modification and improvement, these are all within the scope of protection of the present invention.
Claims (4)
1. a kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test, is made of, characterized in that institute anchorage ontology
Stating anchorage ontology includes upper clamp plate (4) and lower clamp plate (5), and the upper clamp plate (4) and the corresponding position of lower clamp plate (5) are symmetrically
It is provided with bolt hole (6), the bolt (3) through the upper clamp plate (4) and lower clamp plate (5), institute is provided in the bolt hole (6)
It states the middle part on the inside of upper clamp plate (4) and lower clamp plate (5) and fluted (8) is set, be provided in the groove (8) for placing test
With the protective case (2) of the hollow structure of CFRP stick (1), hinge hole is also symmetrically arranged on the upper clamp plate (4) and lower clamp plate (5)
(7)。
2. the clamping plate type anchorage according to claim 1 for light circle pultrusion CFRP bar drawing test, characterized in that institute
It states in groove (8) and is provided with screw thread.
3. the clamping plate type anchorage according to claim 1 for light circle pultrusion CFRP bar drawing test, characterized in that institute
It states in protective case (2) and is provided with indentation.
4. the clamping plate type anchorage according to claim 1 for light circle pultrusion CFRP bar drawing test, characterized in that institute
Protective case (2) is stated to be made of aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910413766.5A CN110186751A (en) | 2019-05-17 | 2019-05-17 | A kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910413766.5A CN110186751A (en) | 2019-05-17 | 2019-05-17 | A kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110186751A true CN110186751A (en) | 2019-08-30 |
Family
ID=67716698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910413766.5A Pending CN110186751A (en) | 2019-05-17 | 2019-05-17 | A kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110186751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678782A (en) * | 2020-05-14 | 2020-09-18 | 江苏禹治流域管理技术研究院有限公司 | Testing device and testing method for anti-drawing performance of single fiber test piece |
| CN114414371A (en) * | 2022-01-18 | 2022-04-29 | 天津大学 | Device and method for testing transverse compressive bearing capacity of FRP (fiber reinforced Plastic) rib-clamping piece |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202064523U (en) * | 2011-05-06 | 2011-12-07 | 全恩懋 | Self-steering prestressed sheet clamping and stretching anchorage device |
| CN203383401U (en) * | 2013-07-04 | 2014-01-08 | 厦门特房建设工程集团有限公司 | Clamping anchor for carbon-fiber composite material bar |
| CN104695629A (en) * | 2015-03-23 | 2015-06-10 | 天津大学 | Clamping piece type CFRP rib clamping anchorage device |
| CN104727487A (en) * | 2015-03-23 | 2015-06-24 | 天津大学 | Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system |
| CN205280493U (en) * | 2016-01-05 | 2016-06-01 | 中国石油化工股份有限公司 | A anchor clamps for carbon fiber complex core tensile strength test |
| CN205483801U (en) * | 2016-03-25 | 2016-08-17 | 中南林业科技大学 | Tensile fatigue test device of high tensile steel wire |
| CN210128894U (en) * | 2019-05-17 | 2020-03-06 | 天津大学 | Clamping plate type anchorage device for smooth round pultrusion CFRP (carbon fiber reinforced plastics) bar tensile test |
-
2019
- 2019-05-17 CN CN201910413766.5A patent/CN110186751A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202064523U (en) * | 2011-05-06 | 2011-12-07 | 全恩懋 | Self-steering prestressed sheet clamping and stretching anchorage device |
| CN203383401U (en) * | 2013-07-04 | 2014-01-08 | 厦门特房建设工程集团有限公司 | Clamping anchor for carbon-fiber composite material bar |
| CN104695629A (en) * | 2015-03-23 | 2015-06-10 | 天津大学 | Clamping piece type CFRP rib clamping anchorage device |
| CN104727487A (en) * | 2015-03-23 | 2015-06-24 | 天津大学 | Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system |
| CN205280493U (en) * | 2016-01-05 | 2016-06-01 | 中国石油化工股份有限公司 | A anchor clamps for carbon fiber complex core tensile strength test |
| CN205483801U (en) * | 2016-03-25 | 2016-08-17 | 中南林业科技大学 | Tensile fatigue test device of high tensile steel wire |
| CN210128894U (en) * | 2019-05-17 | 2020-03-06 | 天津大学 | Clamping plate type anchorage device for smooth round pultrusion CFRP (carbon fiber reinforced plastics) bar tensile test |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678782A (en) * | 2020-05-14 | 2020-09-18 | 江苏禹治流域管理技术研究院有限公司 | Testing device and testing method for anti-drawing performance of single fiber test piece |
| CN114414371A (en) * | 2022-01-18 | 2022-04-29 | 天津大学 | Device and method for testing transverse compressive bearing capacity of FRP (fiber reinforced Plastic) rib-clamping piece |
| CN114414371B (en) * | 2022-01-18 | 2024-03-22 | 天津大学 | Device and method for testing transverse compressive bearing capacity of FRP (fiber reinforced Plastic) rib-clamping piece |
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