CN105738278A - Rebar-concrete bond slip center pullout testing device and production method thereof - Google Patents
Rebar-concrete bond slip center pullout testing device and production method thereof Download PDFInfo
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- CN105738278A CN105738278A CN201610109923.XA CN201610109923A CN105738278A CN 105738278 A CN105738278 A CN 105738278A CN 201610109923 A CN201610109923 A CN 201610109923A CN 105738278 A CN105738278 A CN 105738278A
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- steel
- sensor
- attachment portion
- plate
- test specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
Abstract
The invention discloses a rebar-concrete bond slip experimental device and a production method thereof, and belongs to the field of material performance. The device comprises a test piece erection part (1), a sensor connection part (2), a sensor (3), an upper platform plate, a lower platform plate and connecting threaded rods (5), wherein the test piece erection part (1) is a square steel block with a hole formed in the center, and cuboidal steel blocks are welded on the two sides of the upper part of the square steel block respectively; the sensor connection part (2) is divided into an upper part and a lower part, the upper part is cylindrical steel with a hole formed in the center, the lower part is a steel pipe, and the upper and lower parts have the same internal diameter; the upper and lower platform plates are both steel plates with holes formed in the centers, and holes for the threaded rods to penetrate through for fixation are formed around the steel plates. The device is applied to a rebar-concrete center pullout test for measurement of bonding strength between a rebar and concrete, is simple in structure and convenient to assemble, and can be used for effectively measuring rebar-concrete bond slip performance.
Description
Technical field
The present invention relates to a kind of steel-concrete center pull-out test that is applicable to, between mensuration reinforcing bar and concrete, the device design of adhesion strength, belongs to material property field.
Background technology
The basic mechanical performance that the bond-slip properties of steel-concrete is concrete is.The research of the bond-slip problem of steel-concrete is not only significant in theory, also extremely important in engineering practice, for instance reinforcing bar anchorage length in concrete, the lap of splice etc..Armored concrete is the composite of the combination of materials by reinforcing bar and concrete two kinds with different physico-mechanical properties, and in structure, reinforcing bar is extremely complex with the stress at concrete binding position and failure mechanism, is difficult to accurate simulation.Therefore, for steel-concrete adhesive property, it is possible to by the determination of test method of center drawing.
Summary of the invention
It is an object of the invention to design a kind of simple structure, easy to assembly, be beneficial to the assay device of test observation, for realizing measuring the bond-slip properties between steel-concrete.
For achieving the above object, this covering device considers following technical problem:
1. this device should have greater stiffness, and in pull-out test carries out, device occurs without deformation, and avoids affecting the Accurate Determining of experimental data.
2. this device should be prone to viewing test phenomenon, and should not affect the generation of experimental phenomena.
For achieving the above object, the present invention adopts the following technical scheme that
Steel-concrete bond-slip experimental provision, it is characterised in that: this device includes erecting test specimen part (1), and sensor attachment portion divides (2), sensor (3), upper mounting plate plate, lower platform plate part, and connect screw rod (5)；Erecting the square bloom punched centered by test specimen part (1), both sides, square bloom top are respectively welded cuboid bloom；
Sensor attachment portion divides (2) to be divided into upper and lower two parts, and top is divided into the column type steel that center punches, and bottom is divided into steel pipe, and upper and lower two parts internal diameter is identical；Upper mounting plate plate and lower platform plate all centered by the steel plate that punches, surrounding has for screw rod through fixing hole；
Erection test specimen is partially disposed in sensor attachment portion and divides, and center hole aligns, and uses bolt the two to be fixed；Sensor attachment portion divides steel pipe end to insert in sensor；Erect test specimen part, sensor attachment portion divides and sensor is placed on lower platform plate, and upper mounting plate plate and lower platform plate are fixed by screw rod and nut.
The method of the steel-concrete bond-slip assay device that preparation is described, it is characterised in that step is as follows:
The first step, screw rod is each passed through upper mounting plate plate and the hole of lower platform plate surrounding, and is fixed by nut；
Second step, is partially disposed in sensor attachment portion by erection test specimen and divides, and center hole aligns, and uses bolt the two to be fixed；
3rd step, sensor attachment portion divides steel pipe end to insert in sensor；
4th step, by erection test specimen part, sensor attachment portion divides and sensor is placed on lower platform plate, is the formation of steel-concrete bond-slip assay device.
Accompanying drawing explanation
Fig. 1 is each ingredient detail drawing of device.
Fig. 2 is that device is completed figure.
In figure: (1) erects that test specimen part, (2) sensor attachment portion divide, (3) sensor, (4) landing slab part, (5) connect screw rod.
Detailed description of the invention
As it is shown in figure 1, this device is by erecting test specimen part (1), sensor attachment portion divides (2), sensor (3), landing slab part (4), connects screw rod (5) and is formed.
Described erection test specimen part (1) is 150mm for the length of side, and thickness is 40mm steel, and center punches diameter of phi 32mm, both sides, top welding 30mm × 150mm × 30mm cuboid bloom.
Described sensor attachment portion divides (2) for diameter of phi 100mm, and center punches diameter of phi 32mm, the column type steel of thick 20mm, above meets internal diameter Φ 32mm, external diameter Φ 38mm, and wall thickness is the steel pipe of 3mm.
Described landing slab part is the length of side is 400mm, and thickness is 50mm steel, and corner punches diameter of phi 25mm, and center punches diameter of phi 38mm.
Four screw rods that described connection screw rod (5) is diameter of phi 25mm.
Described steel-concrete bond-slip assay device, its manufacture method is as follows:
The first step, four screw rods are each passed through upper and lower landing slab corner hole, and are fixed by nut, and upper and lower landing slab spacing is determined by testing sample dimensions.
Second step, is partially disposed in sensor attachment portion by erection test specimen and divides, and center hole aligns, and uses bolt the two to be fixed.
3rd step, will connect the part fixed in second step, sensor attachment portion divide steel pipe end to insert in sensor.
4th step, is partially disposed on lower flat platen by described in the 3rd step, is the formation of steel-concrete bond-slip assay device.
First upper and lower landing slab and four are connected screw rod group to install, then by erection test specimen part, sensor attachment portion divides, sensor is assembled into one, it is put on lower flat platen, finally test specimen is placed in test specimen erection part, it is possible to carry out steel-concrete bond-slip test.
Assay device coordinates electronic universal tester to use, it is achieved full-automatic loading procedure, it is ensured that test loading procedure is stable.Device is furnished with spoke sensor, makes Test Data Collecting more accurate, compares common pull-out experiment charger, simple structure, can improve service efficiency.
Claims (2)
1. steel-concrete bond-slip experimental provision, it is characterised in that: this device includes erecting test specimen part (1), and sensor attachment portion divides (2), sensor (3), upper mounting plate plate, lower platform plate part, and connect screw rod (5)；Erecting the square bloom punched centered by test specimen part (1), both sides, square bloom top are respectively welded cuboid bloom；
Sensor attachment portion divides (2) to be divided into upper and lower two parts, and top is divided into the column type steel that center punches, and bottom is divided into steel pipe, and upper and lower two parts internal diameter is identical；Upper mounting plate plate and lower platform plate all centered by the steel plate that punches, surrounding has for screw rod through fixing hole；
Erection test specimen is partially disposed in sensor attachment portion and divides, and center hole aligns, and uses bolt the two to be fixed；Sensor attachment portion divides steel pipe end to insert in sensor；Erect test specimen part, sensor attachment portion divides and sensor is placed on lower platform plate, and upper mounting plate plate and lower platform plate are fixed by screw rod and nut.
2. the method preparing steel-concrete bond-slip assay device as claimed in claim 1, it is characterised in that step is as follows:
The first step, screw rod is each passed through upper mounting plate plate and the hole of lower platform plate surrounding, and is fixed by nut；
Second step, is partially disposed in sensor attachment portion by erection test specimen and divides, and center hole aligns, and uses bolt the two to be fixed；
3rd step, sensor attachment portion divides steel pipe end to insert in sensor；
4th step, by erection test specimen part, sensor attachment portion divides and sensor is placed on lower platform plate, is the formation of steel-concrete bond-slip assay device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610109923.XA CN105738278A (en) | 2016-02-27 | 2016-02-27 | Rebar-concrete bond slip center pullout testing device and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610109923.XA CN105738278A (en) | 2016-02-27 | 2016-02-27 | Rebar-concrete bond slip center pullout testing device and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105738278A true CN105738278A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610109923.XA Pending CN105738278A (en) | 2016-02-27 | 2016-02-27 | Rebar-concrete bond slip center pullout testing device and production method thereof |
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| CN (1) | CN105738278A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763563A (en) * | 2019-11-06 | 2020-02-07 | 东莞理工学院 | Research method of FRP rib bonding slippage relation based on Poisson effect |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63253238A (en) * | 1987-04-10 | 1988-10-20 | Dainippon Printing Co Ltd | Method and jig for measuring engagement strength of fastener |
| CN2876764Y (en) * | 2006-03-10 | 2007-03-07 | 上海新三思计量仪器制造有限公司 | Material tester |
| CN203396646U (en) * | 2013-06-19 | 2014-01-15 | 上海市质量监督检验技术研究院 | Anchor rod pulling tester |
| CN204855338U (en) * | 2015-08-11 | 2015-12-09 | 攀枝花学院 | Digital concrete reinforcement adhesion stress detection device |
-
2016
- 2016-02-27 CN CN201610109923.XA patent/CN105738278A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63253238A (en) * | 1987-04-10 | 1988-10-20 | Dainippon Printing Co Ltd | Method and jig for measuring engagement strength of fastener |
| CN2876764Y (en) * | 2006-03-10 | 2007-03-07 | 上海新三思计量仪器制造有限公司 | Material tester |
| CN203396646U (en) * | 2013-06-19 | 2014-01-15 | 上海市质量监督检验技术研究院 | Anchor rod pulling tester |
| CN204855338U (en) * | 2015-08-11 | 2015-12-09 | 攀枝花学院 | Digital concrete reinforcement adhesion stress detection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763563A (en) * | 2019-11-06 | 2020-02-07 | 东莞理工学院 | Research method of FRP rib bonding slippage relation based on Poisson effect |
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Application publication date: 20160706 |