CN204422393U - The single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip - Google Patents
The single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip Download PDFInfo
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- CN204422393U CN204422393U CN201520114991.6U CN201520114991U CN204422393U CN 204422393 U CN204422393 U CN 204422393U CN 201520114991 U CN201520114991 U CN 201520114991U CN 204422393 U CN204422393 U CN 204422393U
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- frp muscle
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Abstract
The utility model provides a kind of FRP reinforced concrete bond-slip single-ended pull-out test device, comprises universal hydraulic testing machine, crossbeam and steel reaction frame; The utility model all places sleeve pipe at FRP muscle free end and loading end place on the one hand, the bonding between FRP muscle and concrete can be isolated, thus the anchorage length of control FRP muscle, the concrete local compression that loading end simultaneously also can be avoided to cause more greatly because of load destroys; Within the scope of FRP muscle end-fixture, be wound around compound glass filament on the other hand, the contact area of FRP muscle and fixture can be increased, increase the transmission length of pulling force, make FRP muscle jointly stressed, prevent FRP reinforced concrete from being cut off by fixture before bond damage.
Description
Technical field
The utility model relates to a kind of pull-out test device, especially relates to the single-ended pull-out test device of FRP reinforced concrete bond-slip.
Background technology
FRP muscle, as a kind of novel compound substance, has good stress performance and permanance, and particularly surperficial embedded FRP muscle reinforcement technique becomes the study hotspot in concrete structure reinforcement field gradually.No matter be at reinforced concrete structure or in FRP tendon concrete structure, the material of FRP muscle and concrete two kinds of different performances co-operation mainly can be given the credit between them and there is effective cohesive action.This cohesive action makes FRP muscle and concrete realize Stress transmit at its interface place, thus in FRP muscle and concrete, set up the necessary working stress of structural bearing.In order to the bonding mechanism between FRP muscle and concrete can be studied preferably, disclose the bond-slip internal relation between FRP muscle and concrete, need to carry out the research of bond-slip pull-out test to FRP reinforced concrete.
Nowadays, FRP reinforced concrete bond-slip pull-out test all unified, the specification of neither one and concrete method of operating can be followed, exist the inconvenience of pull-out test process operation, stringency of test lower, do sth. in advance brittle failure at pull-out test process FRP muscle and the problems such as effective bond-slip data cannot be obtained.Thus, lack that a kind of structure is simple, reasonable in design at present, in-site installation and easy and simple to handle and test speed fast, test result accurately and reliably, a kind of FRP reinforced concrete bond-slip single-ended pull-out test device can be easy, fast and high-quality completes the single-ended pull-out test of FRP reinforced concrete bond-slip.
Summary of the invention
Goal of the invention: the utility model provides the single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip, problems such as its objective is the complex structure existing for solution equipment in the past, design unreasonable, in-site installation and complex operation, test speed is slow, test result accuracy rate is low.
technical scheme: the utility model is achieved through the following technical solutions:
The single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip, is characterized in that: this device comprises universal hydraulic testing machine, crossbeam and steel reaction frame; Crossbeam is arranged on the top of universal hydraulic testing machine, and steel reaction frame is arranged in universal hydraulic testing machine;
Described steel reaction frame comprises upper strata steel plate, lower floor's steel plate and steel column, and described upper strata steel plate, lower floor's steel plate are drilled with 4 circular holes in symmetric position, and steel column is through upper strata steel plate and lower floor's steel plate and fix with bolt, and upper strata steel plate and lower floor's steel plate are linked into an integrated entity;
Be drilled with circular hole in the middle part of the steel plate of described upper strata, FRP muscle is connected with crossbeam by fixture through this circular hole upper end; Middle part bottom described lower floor steel plate is welded with steel bar end, and described steel bar end fixture is clamped and is fixed on the bottom of universal hydraulic testing machine.
Pass concrete test cube center when FRP muscle uses and form free end in bottom, this free end is provided with free end sleeve pipe, FRP muscle forms loading end through the position of upper strata steel plate, and this loading end place is provided with loading end sleeve pipe.
Described FRP muscle free end places dial gauge, and described dial gauge indicator withstands on the bottom of described FRP muscle free end; The little steel disc of one " L " type is pasted in the position that FRP muscle upper end is connected with fixture, is placed in by dial gauge on described " L " little steel disc.
The position that described FRP muscle upper end is connected with fixture is wound around compound glass filament, and glass fiber is wrapped between FRP muscle upper end and fixture.
The fixture of the upper end of FRP muscle is connected with crossbeam by pressure transducer.
advantage and effect:
The utility model provides a kind of FRP reinforced concrete bond-slip single-ended pull-out test device, comprises universal hydraulic testing machine, crossbeam and steel reaction frame; Described steel reaction frame comprises upper strata steel plate, lower floor's steel plate and steel column, and described upper strata steel plate, lower floor's steel plate are drilled with 4 circular holes in symmetric position, and steel column passes described upper and lower two-layered steel plates and fixes with bolt, and concrete test cube is placed in described steel reaction frame; Be drilled with circular hole in the middle part of the steel plate of described upper strata, FRP muscle passes circular hole and clamps with fixture; Be welded with steel bar end in the middle part of described lower floor steel plate, described steel bar end fixture is clamped; Through FRP muscle in the middle part of described concrete test cube, described FRP muscle free end and loading end all place sleeve pipe; Described FRP muscle free end places dial gauge, and described dial gauge indicator withstands on described FRP muscle end; Described FRP muscle loading end pastes the little steel disc of one " L " type, is placed in by dial gauge on described " L " little steel disc; Described FRP muscle loads within the scope of fixture described in end and is wound around compound glass filament; Be connected with pressure transducer below described crossbeam.
The utility model all places sleeve pipe at FRP muscle free end and loading end place on the one hand, the bonding between FRP muscle and concrete can be isolated, thus the anchorage length of control FRP muscle, the concrete local compression that loading end simultaneously also can be avoided to cause more greatly because of load destroys; Within the scope of FRP muscle end-fixture, be wound around compound glass filament on the other hand, the contact area of FRP muscle and fixture can be increased, increase the transmission length of pulling force, make FRP muscle jointly stressed, prevent FRP reinforced concrete from being cut off by fixture before bond damage.
The utility model also has the following advantages:
1. structure is simple and reasonable in design, and input cost is lower.2, in-site installation and easy and simple to handle, use easy and simple to handle and test speed fast, FRP muscle can be avoided to shift to an earlier date brittle failure.3, good, the test result of result of use accurately and reliably and practical value is high, can be easy, fast and high-quality completes the pull-out test process of FRP reinforced concrete bond-slip.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model concrete test cube plan structure schematic diagram.
Fig. 3 is the syndeton cross-sectional view of the utility model FRP reinforced concrete test specimen.
Reference numeral:
1-universal hydraulic testing machine, 2-crossbeam, 3-steel reaction frame, 31-upper strata steel plate, 32-lower floor steel plate, 33-steel column, 34-bolt, 4-concrete test cube, 5-FRP muscle, 6-fixture,
7-steel bar end, 8-sleeve pipe, 9-dial gauge, 10-glass fiber, the little steel disc of 11-" L " type, 12-pressure transducer.
embodiment:below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1, the utility model provides a kind of FRP reinforced concrete bond-slip single-ended pull-out test device, and this device comprises universal hydraulic testing machine 1, crossbeam 2 and steel reaction frame 3; Crossbeam 2 is arranged on the top of universal hydraulic testing machine 1, and steel reaction frame 3 is arranged in universal hydraulic testing machine 1;
Described steel reaction frame 3 comprises upper strata steel plate 31, lower floor's steel plate 32 and steel column 33, described upper strata steel plate 31, lower floor's steel plate 32 are drilled with 4 circular holes in symmetric position, steel column 33 is also fixed with bolt 34 through upper strata steel plate 31 and lower floor's steel plate 32, and upper strata steel plate 31 and lower floor's steel plate 32 are linked into an integrated entity;
Concrete test cube 4 is placed in described steel reaction frame 3 when using, be drilled with circular hole in the middle part of described upper strata steel plate 31, and FRP muscle 5 is connected with crossbeam 2 by fixture 6 through this circular hole upper end; Middle part bottom described lower floor steel plate 32 is welded with steel bar end 7, and described steel bar end 7 is clamped with fixture 6 and is fixed on the bottom of universal hydraulic testing machine 1.
FRP muscle 5 passes concrete test cube 4 center when using and forms free end in bottom, this free end is provided with the position formation loading end of free end sleeve pipe 8, FRP muscle 5 through upper strata steel plate 31, and this loading end place is provided with loading end sleeve pipe 8.
Described FRP muscle 5 free end places dial gauge 9, and described dial gauge 9 indicator withstands on the bottom of described FRP muscle 5 free end; The little steel disc 11 of one " L " type is pasted in the position that FRP muscle 5 upper end is connected with fixture 6, is placed in by dial gauge 9 on described " L " little steel disc 11.
The position that described FRP muscle 5 upper end is connected with fixture 6 is wound around compound glass filament 10, and glass fiber 10 is wrapped between FRP muscle 5 upper end and fixture 6.
The fixture 6 of the upper end of FRP muscle 5 is connected with crossbeam 2 by pressure transducer 12.
In this example, concrete test cube is of a size of 150mm × 150mm × 150mm.
Sleeve pipe 8 described in this example is PVC plastic sleeve pipe.
The steel plate thickness of slab of upper strata described in this example is 30mm, and lower floor's steel plate thickness of slab is 20mm.
Can adjust accordingly according to the length of anchorage length to sleeve pipe 8 of required FRP muscle during practice of construction.
The utility model, structure is simple, reasonable in design, in-site installation and easy and simple to handle and test speed is fast, test result accurately and reliably, FRP muscle can be avoided to shift to an earlier date brittle failure and can be easy, fast and high-quality completes the single-ended pull-out test process of FRP reinforced concrete bond-slip.
Claims (5)
1. the single-ended pull-out test device of FRP reinforced concrete bond-slip, is characterized in that: this device comprises universal hydraulic testing machine (1), crossbeam (2) and steel reaction frame (3); Crossbeam (2) is arranged on the top of universal hydraulic testing machine (1), and steel reaction frame (3) is arranged in universal hydraulic testing machine (1);
Described steel reaction frame (3) comprises upper strata steel plate (31), lower floor's steel plate (32) and steel column (33), described upper strata steel plate (31), lower floor's steel plate (32) are drilled with 4 circular holes in symmetric position, steel column (33) through upper strata steel plate (31) and lower floor's steel plate (32) and with bolt (34) fix, upper strata steel plate (31) and lower floor's steel plate (32) are linked into an integrated entity;
Middle part, described upper strata steel plate (31) is drilled with circular hole, and FRP muscle (5) is connected with crossbeam (2) by fixture (6) through this circular hole upper end; The middle part of described lower floor steel plate (32) bottom is welded with steel bar end (7), and described steel bar end (7) is clamped with fixture (6) and is fixed on the bottom of universal hydraulic testing machine (1).
2. the single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip according to claim 1, its feature exists: through concrete test cube (4) center and at bottom formation free end when FRP muscle (5) uses, this free end is provided with free end sleeve pipe (8), FRP muscle (5) forms loading end through the position of upper strata steel plate (31), and this loading end place is provided with loading end sleeve pipe (8).
3. the single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip according to claim 2, its feature exists: described FRP muscle (5) free end places dial gauge (9), and described dial gauge (9) indicator withstands on the bottom of described FRP muscle (5) free end; The little steel disc of one " L " type (11) is pasted in the position that FRP muscle (5) upper end is connected with fixture (6), is placed in by dial gauge (9) on described " L " little steel disc (11).
4. the single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip according to claim 2, it is characterized in that: the position that described FRP muscle (5) upper end is connected with fixture (6) is wound around compound glass filament (10), and glass fiber (10) is wrapped between FRP muscle (5) upper end and fixture (6).
5. the single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip according to claim 1, is characterized in that: the fixture (6) of the upper end of FRP muscle (5) is connected with crossbeam (2) by pressure transducer (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520114991.6U CN204422393U (en) | 2015-02-17 | 2015-02-17 | The single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520114991.6U CN204422393U (en) | 2015-02-17 | 2015-02-17 | The single-ended pull-out test device of a kind of FRP reinforced concrete bond-slip |
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| CN204422393U true CN204422393U (en) | 2015-06-24 |
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| CN105181580A (en) * | 2015-08-26 | 2015-12-23 | 河海大学 | Device for testing steel bar bond stress in concrete filled steel tube and testing method thereof |
| CN105300718A (en) * | 2015-11-09 | 2016-02-03 | 山东科技大学 | Anchoring structure pullout test device and test method |
| CN106018270A (en) * | 2016-05-10 | 2016-10-12 | 大连理工大学 | Pull-out test device for bond-slip hysteretic behavior testing of stiffening rib |
| CN106525717A (en) * | 2016-11-17 | 2017-03-22 | 东南大学 | FRP (fiber reinforced plastic) rebar eccentric pull-out test device and method considering bending shear stress effect |
| CN107084880A (en) * | 2017-06-05 | 2017-08-22 | 东南大学 | A kind of method for measuring reinforcing bar and cement-base composite material bond and anchor property |
| CN107238568A (en) * | 2017-03-31 | 2017-10-10 | 浙江大学 | Method of testing and loading device based on corrosion and the armored concrete bond-slip properties of fatigue load coupling influence |
| CN107621441A (en) * | 2017-09-27 | 2018-01-23 | 北京工业大学 | Suitable for FRP tendons and a kind of grip device of bonding wood slip property experiment |
| CN107966405A (en) * | 2017-12-25 | 2018-04-27 | 合肥工业大学 | A kind of laboratory model construction on concrete and steel pile casting bonding characteristic |
| CN108037072A (en) * | 2017-12-23 | 2018-05-15 | 中冶建筑研究总院有限公司 | The measurement device and method of a kind of FRP tendons and Bond Performance Between Concrete |
| CN108088756A (en) * | 2018-01-31 | 2018-05-29 | 福州大学 | A kind of experimental provision and its application method for being used to study FRP- concrete interface adhesive properties |
| CN108181234A (en) * | 2018-02-06 | 2018-06-19 | 山西省交通科学研究院 | A kind of fiber and pitch adhesive property test device |
| CN108507866A (en) * | 2018-05-31 | 2018-09-07 | 郑州大学 | The test specimen measurement structure and assemble method of the two-way tension adhesion test of weak separation muscle material |
| CN110220783A (en) * | 2019-06-28 | 2019-09-10 | 北京工业大学 | A kind of apparatus and method of observation armored concrete drawing process internal fissure development |
| CN110907353A (en) * | 2019-12-04 | 2020-03-24 | 河海大学 | Test device for bonding strength between multi-layer bonding materials |
| CN111579481A (en) * | 2020-06-20 | 2020-08-25 | 中国建筑材料科学研究总院有限公司 | Device for testing bonding performance of FRP (fiber reinforced plastic) ribs and concrete under coupling action of continuous load and corrosive environment |
| CN113686696A (en) * | 2021-08-05 | 2021-11-23 | 兰州交通大学 | FRP-concrete interface double shear test loading device and method |
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- 2015-02-17 CN CN201520114991.6U patent/CN204422393U/en not_active Expired - Fee Related
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| CN105181580A (en) * | 2015-08-26 | 2015-12-23 | 河海大学 | Device for testing steel bar bond stress in concrete filled steel tube and testing method thereof |
| CN105300718A (en) * | 2015-11-09 | 2016-02-03 | 山东科技大学 | Anchoring structure pullout test device and test method |
| CN105300718B (en) * | 2015-11-09 | 2018-01-26 | 山东科技大学 | Anchor structure pull-out test device and test method |
| CN106018270B (en) * | 2016-05-10 | 2018-07-13 | 大连理工大学 | A kind of pull-out test device being suitable for enhancing muscle material bonding-sliding Hysteresis Behavior test |
| CN106018270A (en) * | 2016-05-10 | 2016-10-12 | 大连理工大学 | Pull-out test device for bond-slip hysteretic behavior testing of stiffening rib |
| CN106525717A (en) * | 2016-11-17 | 2017-03-22 | 东南大学 | FRP (fiber reinforced plastic) rebar eccentric pull-out test device and method considering bending shear stress effect |
| CN107238568A (en) * | 2017-03-31 | 2017-10-10 | 浙江大学 | Method of testing and loading device based on corrosion and the armored concrete bond-slip properties of fatigue load coupling influence |
| CN107084880A (en) * | 2017-06-05 | 2017-08-22 | 东南大学 | A kind of method for measuring reinforcing bar and cement-base composite material bond and anchor property |
| CN107084880B (en) * | 2017-06-05 | 2019-07-30 | 东南大学 | A method of measurement reinforcing bar and cement-base composite material bond and anchor property |
| CN107621441A (en) * | 2017-09-27 | 2018-01-23 | 北京工业大学 | Suitable for FRP tendons and a kind of grip device of bonding wood slip property experiment |
| CN108037072A (en) * | 2017-12-23 | 2018-05-15 | 中冶建筑研究总院有限公司 | The measurement device and method of a kind of FRP tendons and Bond Performance Between Concrete |
| CN107966405A (en) * | 2017-12-25 | 2018-04-27 | 合肥工业大学 | A kind of laboratory model construction on concrete and steel pile casting bonding characteristic |
| CN108088756A (en) * | 2018-01-31 | 2018-05-29 | 福州大学 | A kind of experimental provision and its application method for being used to study FRP- concrete interface adhesive properties |
| CN108088756B (en) * | 2018-01-31 | 2023-09-12 | 福州大学 | Experimental device for researching FRP-concrete interface bonding performance and application method thereof |
| CN108181234A (en) * | 2018-02-06 | 2018-06-19 | 山西省交通科学研究院 | A kind of fiber and pitch adhesive property test device |
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| CN108507866A (en) * | 2018-05-31 | 2018-09-07 | 郑州大学 | The test specimen measurement structure and assemble method of the two-way tension adhesion test of weak separation muscle material |
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| CN110907353B (en) * | 2019-12-04 | 2021-10-19 | 河海大学 | Test device for bonding strength between multi-layer bonding materials |
| CN111579481A (en) * | 2020-06-20 | 2020-08-25 | 中国建筑材料科学研究总院有限公司 | Device for testing bonding performance of FRP (fiber reinforced plastic) ribs and concrete under coupling action of continuous load and corrosive environment |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20200217 |