CN105259107A - Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method - Google Patents
Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method Download PDFInfo
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- CN105259107A CN105259107A CN201510688835.5A CN201510688835A CN105259107A CN 105259107 A CN105259107 A CN 105259107A CN 201510688835 A CN201510688835 A CN 201510688835A CN 105259107 A CN105259107 A CN 105259107A
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- concrete
- steel plate
- reinforcing bar
- analysing
- notch
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- 239000004567 concrete Substances 0.000 title claims abstract description 56
- 229910001294 Reinforcing steel Inorganic materials 0.000 title abstract 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 230000003014 reinforcing Effects 0.000 claims abstract description 48
- 238000006073 displacement reactions Methods 0.000 claims abstract description 19
- 229920000915 polyvinyl chlorides Polymers 0.000 claims abstract description 16
- 230000000875 corresponding Effects 0.000 claims description 6
- 238000003556 assay method Methods 0.000 claims description 3
- 235000014121 butter Nutrition 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000000034 methods Methods 0.000 claims description 3
- 210000001847 Jaw Anatomy 0.000 claims 3
- 239000000463 materials Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 239000004800 polyvinyl chloride Substances 0.000 abstract 3
- 230000003068 static Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 230000001070 adhesive Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002079 cooperative Effects 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 239000000203 mixtures Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Abstract
Description
Technical field
The present invention relates to the device that a kind of drawing type measures reinforcing bar and Bond Performance Between Concrete, belong to concrete construction field.
Background technology
Adhesive property between reinforcing bar and concrete is reinforcing bar and the concrete bi-material composition cooperative basis of component, also be that reinforced concrete structure carries stressed prerequisite, this effect makes can realize Stress transmit between reinforcing bar and concrete, thus in reinforcing bar and concrete, set up the necessary working stress of structural bearing.The test unit that current shortage is unified, reinforcing bar and the direct pull-out test of concrete, need the problem solving test specimen centering.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides a kind of drawing type to measure the proving installation of reinforcing bar and Bond Performance Between Concrete.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of drawing type measures the device of reinforcing bar and Bond Performance Between Concrete, and this device comprises loading frame, concrete sample, T steel tie rod, reinforcing bar, force snesor, universal testing machine, displacement meter, stationary singnal detecting and analysing system and computing machine;
Described loading frame is made up of the high-strength bolt screw rod of top steel plate, lower steel plate and connection top steel plate and lower steel plate and high-strength bolt nut; Described top surface of steel plate is provided with T-shaped chute; The T connector of described T-steel tie rod is installed in described T-shaped chute, and the end of T-steel tie rod is connected with the fixture of universal testing machine one end; Described lower steel plate is provided with notch, the position of this notch and the position consistency of T-shaped chute; Described concrete sample is placed in described lower steel plate surface; One end of described reinforcing bar passes concrete sample and is connected with the fixture of the notch on lower steel plate with the universal testing machine other end, and this end fixture arranges force snesor; The other end of reinforcing bar also stretches out outside concrete, and this end installs displacement meter; Described displacement meter is connected with described stationary singnal detecting and analysing system by signal wire with force snesor, and this stationary singnal detecting and analysing system is connected with described computing machine.
Further, the upper end of described concrete sample and the centre position of bottom are provided with pvc pipe, and reinforcing bar is through described pvc pipe.
Further, described T-shaped chute and notch place are provided with size scale.
Present invention also offers the device adopting drawing type to measure reinforcing bar and Bond Performance Between Concrete and carry out method for measuring, specifically comprise the steps:
The first step: casting concrete test specimen: hole in the middle part of side form template, penetrated in die trial by reinforcing bar, and put pvc pipe, is arranged in two side form template ends by pvc pipe;
Second step: assembling loading frame: top steel plate and lower steel plate are coupled together by high-strength bolt screw rod and high-strength bolt nut, and tightens;
3rd step: assembling charger: reinforcing bar is penetrated the notch place that lower steel plate is reserved in advance, the position of transportable concrete test specimen, make it a corresponding scale, T steel tie rod is penetrated top steel plate, mobile T steel tie rod, make it identical in the corresponding scale value in lower steel plate place with reinforcing bar, make the accurate centering of concrete sample;
4th step: connecting test device: displacement meter, force snesor are connected with stationary singnal detecting and analysing system, stationary singnal detecting and analysing system connects computing machine;
5th step: open stationary singnal detecting and analysing system, zeroing, vertical load is applied by universal testing machine, load P (t) when relative displacement Δ S (t) of reinforcing bar destroys with test specimen in stationary singnal detecting and analysing system record loading procedure, can obtain load-displacement curve according to Δ S (t) and P (t).
Further, before test, to be coated with between concrete sample and lower steel plate and spread butter.
Beneficial effect of the present invention: the feature of proving installation of the present invention is that assembling is simple, easy to operate, and the required instrument of test is less, can measure at the scene of building.The present invention designs T-shaped chute and notch, and at T-shaped chute and the good scale of notch subscript, reinforcing bar and T steel bar is moved to same scale place, just can solve test specimen centering problem.Material required for the present invention and instrument few, be not only applicable to scientific research, and be applicable to working-yard research reinforcing bar and concrete between adhesive property.
Accompanying drawing explanation
Fig. 1 is the single unit system figure of proving installation of the present invention.
Fig. 2 is upper steel plate level perspective view of the present invention.
Fig. 3 is top of the present invention steel plate sectional drawing.
Fig. 4 is T steel tie rod figure of the present invention.
Fig. 5 is lower steel plate horizontal projection of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is elaborated.
Be the device that a kind of drawing type of the present invention measures reinforcing bar and Bond Performance Between Concrete as Figure 1-5, this device comprises loading frame, concrete sample 5, reinforcing bar 6, T steel tie rod 7, force snesor 8, universal testing machine 9, displacement meter 11, stationary singnal detecting and analysing system 13 and computing machine 14.
Loading frame is by top steel plate 1, lower steel plate 2 and be connected the high-strength bolt screw rod 3 of top steel plate 1 and lower steel plate 2 and high-strength bolt nut 4 forms; Top steel plate 1 surface is provided with T-shaped chute 15; The T connector of T-steel tie rod 7 is installed in T-shaped chute 15, and the end of T-steel tie rod 7 is connected with the fixture of universal testing machine 9 one end; Lower steel plate 2 is provided with notch 16, the position of this notch 16 and the position consistency of T-shaped chute 15; Concrete sample 5 is placed in lower steel plate 2 surface; One end of reinforcing bar 6 passes concrete sample 5 and is connected with the fixture of the notch 16 on lower steel plate 2 with universal testing machine 9 other end, and this end fixture arranges force snesor 8; The other end of reinforcing bar 6 also stretches out outside concrete, and this end installs displacement meter 11; Displacement meter 11 is connected with stationary singnal detecting and analysing system 13 by signal wire 12 with force snesor 8, and this stationary singnal detecting and analysing system 13 is connected with computing machine 14.
In the present embodiment, the upper end of concrete sample 5 and the centre position of bottom are provided with pvc pipe 10, and reinforcing bar 6 is through pvc pipe 10.By the setting of pvc pipe, the test specimen bond-slip section after building only in the middle part of concrete sample, and ensures that bond-slip shear stress between the concrete and rebar surveyed as far as possible evenly.
In the present embodiment, T-shaped chute 15 and notch 16 place are provided with size scale (not shown in FIG.).The top and the bottom steel plate size specification of loading frame of the present invention is consistent, be respectively arranged with T-shaped chute 15 and notch 16, the position consistency of T-shaped chute 15 and notch 16, T-shaped chute 15 and notch 16 place have marked size scale, size scale is consistent, by regulating the position of reinforcing bar 6 and T steel tie rod 7, making reinforcing bar 6 and T-shaped tie rod 7 be in identical graduation place, making the accurate centering of charger.
The assay method adopting above-mentioned drawing type to measure the device of reinforcing bar and Bond Performance Between Concrete specifically comprises the steps:
The first step: casting concrete test specimen: hole in the middle part of side form template, penetrates reinforcing bar 6 in die trial, and puts pvc pipe 10, pvc pipe 10 is arranged in two side form template ends;
Second step: assembling loading frame: top steel plate 1 and lower steel plate 2 are coupled together by high-strength bolt screw rod 3 and high-strength bolt nut 4, and tightens;
3rd step: assembling charger: reinforcing bar 6 is penetrated notch 16 place that lower steel plate 2 is reserved in advance, the position of transportable concrete test specimen 5, make it a corresponding scale, T steel tie rod 7 is penetrated top steel plate 1, mobile T steel tie rod 7, make it identical in the corresponding scale value in lower steel plate 2 place with reinforcing bar 6, make concrete sample 5 precisely centering;
4th step: connecting test device: displacement meter 11, force snesor 8 are connected with stationary singnal detecting and analysing system 13, stationary singnal detecting and analysing system 13 connects computing machine 14;
5th step: open stationary singnal detecting and analysing system 13, zeroing, vertical load is applied by universal testing machine 9, stationary singnal detecting and analysing system 13 records load P (t) during relative displacement Δ S (t) and the test specimen destruction of reinforcing bar in loading procedure, can obtain load-displacement curve according to Δ S (t) and P (t).
Reinforcing bar is extracted by universal testing machine 9 at device, force snesor measures the bond bearing capacity between reinforcing bar 6 and concrete sample 5, to be coated with between concrete sample 5 and lower steel plate 2 before test and spread butter, to reduce to rub for the impact of test findings between concrete interface and lower steel plate 2.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510688835.5A CN105259107A (en) | 2015-10-21 | 2015-10-21 | Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510688835.5A CN105259107A (en) | 2015-10-21 | 2015-10-21 | Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method |
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| Publication Number | Publication Date |
|---|---|
| CN105259107A true CN105259107A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510688835.5A CN105259107A (en) | 2015-10-21 | 2015-10-21 | Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817214A (en) * | 2017-10-20 | 2018-03-20 | 扬州大学 | A kind of basalt fibre and asphalt mastic interface binding intensity measure device and method of testing |
| CN109781619A (en) * | 2019-03-05 | 2019-05-21 | 太原理工大学 | A kind of fixture and detection method detecting fiber cement substrates adhesive property |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234902A (en) * | 2013-04-23 | 2013-08-07 | 金陵科技学院 | Device and method for testing adhesive property between fiber reinforce plastic (FRP) rib and concrete under complicated stress state |
| CN203587484U (en) * | 2013-11-19 | 2014-05-07 | 河海大学 | Mechanical fixing device for measuring adhesive property between steel bar and concrete |
| CN103776767A (en) * | 2014-01-24 | 2014-05-07 | 河海大学 | Portable drawing-type testing device and drawing-type testing method for testing adhesive property steel bar and concrete |
| CN103954200A (en) * | 2014-05-15 | 2014-07-30 | 沈阳建筑大学 | Method of FRP reinforced concrete bond slip test |
-
2015
- 2015-10-21 CN CN201510688835.5A patent/CN105259107A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234902A (en) * | 2013-04-23 | 2013-08-07 | 金陵科技学院 | Device and method for testing adhesive property between fiber reinforce plastic (FRP) rib and concrete under complicated stress state |
| CN203587484U (en) * | 2013-11-19 | 2014-05-07 | 河海大学 | Mechanical fixing device for measuring adhesive property between steel bar and concrete |
| CN103776767A (en) * | 2014-01-24 | 2014-05-07 | 河海大学 | Portable drawing-type testing device and drawing-type testing method for testing adhesive property steel bar and concrete |
| CN103954200A (en) * | 2014-05-15 | 2014-07-30 | 沈阳建筑大学 | Method of FRP reinforced concrete bond slip test |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817214A (en) * | 2017-10-20 | 2018-03-20 | 扬州大学 | A kind of basalt fibre and asphalt mastic interface binding intensity measure device and method of testing |
| CN109781619A (en) * | 2019-03-05 | 2019-05-21 | 太原理工大学 | A kind of fixture and detection method detecting fiber cement substrates adhesive property |
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Application publication date: 20160120 |
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