CN206818706U - A kind of induction type concrete bracing performance test apparatus - Google Patents
A kind of induction type concrete bracing performance test apparatus Download PDFInfo
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- CN206818706U CN206818706U CN201720708000.6U CN201720708000U CN206818706U CN 206818706 U CN206818706 U CN 206818706U CN 201720708000 U CN201720708000 U CN 201720708000U CN 206818706 U CN206818706 U CN 206818706U
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- crack
- fixed plate
- induced device
- test apparatus
- performance test
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Abstract
The utility model provides a kind of induction type concrete bracing performance test apparatus, including fixed plate, crack-induced device and adjustable stress generator, fixed plate is provided with two grooves for being distributed in upper and lower surface, groove floor is inclined-plane of the both ends to middle shrinkage, inclined-plane is provided with adjustable stress generator, the atrium of corresponding fixed plate shape is provided with fixed plate, some evenly distributed crack-induced devices are provided with atrium both sides, crack-induced device is put on atrium bottom plate, crack-induced device both ends are located in the mounting groove of fixed plate side wall, the preceding surface of atrium is opening, surface is bottom plate afterwards.The beneficial effects of the utility model are：Without each debugging, the cracking of concrete is just can ensure that, only with once can just produce crack on concrete surface, the normal continuous of guarantee test is carried out, and easy to carry, and simple in construction, cost is low.
Description
Technical field
It is able to ensure that on concrete surface crack occur the present invention relates to one kind, the induction type of guarantee test normal continuous mixes
Coagulate native early-age crack performance test apparatus.
Background technology
The method of testing of concrete cracking deformation performance is more at present, is broadly divided into concrete shrinkage under unconfined condition and surveys
Concrete cracking performance test methods under method for testing and restrictive condition.Concrete bracing is tested in the case where constraining restrictive condition
Performance can reflect engineering structure practical distortion situation, and concrete cracking performance method of testing under restrictive condition integrates can be with
It is divided into three major types：Flat band method, ring method and prism method, the test of these methods can evaluate concrete cracking in architectural engineering
Trend and rule, specific targets can also be quantified, but had some limitations.Subject matter existing for flat band method is crack production
Raw irregularities accurately not evaluating concrete cracking, in terms of the quantization in crack and post-processing there is also
Deficiency.Ring method subject matter is that the testing time is longer, and sensitiveness is poor.Subject matter existing for prism method is instrumental sensitivity
It is required that high, equipment manufacturing cost is more expensive, and Site Detection is also inconvenient.
The content of the invention
The present invention is directed to problem above, there is provided one kind, which is able to ensure that on concrete surface, crack occurs, and guarantee test is normal
Lasting induction type concrete bracing performance test apparatus.
Goal of the invention is realized by following scheme：A kind of induction type concrete bracing performance test apparatus, including it is solid
Fixed board, crack-induced device and adjustable stress generator, fixed plate are provided with two grooves for being distributed in upper and lower surface, groove floor
It is both ends to the inclined-plane of middle shrinkage, inclined-plane is provided with adjustable stress generator, and corresponding fixed plate shape is provided with fixed plate
Atrium, the preceding surface of atrium is opening, and rear surface is bottom plate, is lured in atrium both sides provided with some evenly distributed cracks
Device is led, crack-induced device is put on the bottom plate of atrium, and crack-induced device both ends are located at the side wall of fixed plate.
Further, axis connection between fixed plate and inclined-plane, inclined-plane keep rotating with fixed plate coupling part, and two are located at
Axis connection between the inclined-plane of the long side wall of fixed plate.
Further, crack-induced device is edge-shaped crack-induced device, and edge-shaped crack-induced device is made up of steel plate, fixed
The inside sidewalls of plate are provided with the mounting groove for coordinating edge-shaped crack-induced device, and the bottom land of mounting groove is provided with screwed hole, and edge-shaped splits
The both ends of the surface of seam persuader are provided with screwed hole, and bolt is fixedly connected with mounting groove and edge-shaped crack-induced device.
Further, edge-shaped crack-induced device towards air end be sharp sword face, the width of edge-shaped crack-induced device
It is highly 75mm for 55mm, and edge-shaped crack-induced device is vertical with the bottom plate of fixed plate, is put down with fixed plate both ends side wall
OK.
Further, some edge-shaped crack-induced devices are parallel to each other, and the distance of the edge-shaped crack-induced device of homonymy
For 50mm.
Further, adjustable stress generator includes the slide rail being located on inclined-plane, and slide rail embeds length adjuster, and length is adjusted
Save device to keep sliding by slide rail, and keep sliding on inclined-plane, the bolt for the length adjuster that is connected on length adjuster.
Further, the section of fixed plate is H shapes.
Further, the connection wall with the fixed plate of inclined-plane axis connection is made up of elastomeric material.
The beneficial effects of the present invention are：Without each debugging, the cracking of concrete is just can ensure that, is only used once just
Crack can be produced on concrete surface, the normal continuous of guarantee test is carried out, and easy to carry, and simple in construction, cost is low.
Brief description of the drawings
Fig. 1 is the front view of the present invention.
Fig. 2 is the top view of the present invention.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described：
Embodiment 1, with reference to accompanying drawing 1-2, the present invention is a kind of induction type concrete bracing performance test apparatus, including
Fixed plate 1, crack-induced device 3 and adjustable stress generator 2, fixed plate 1 is provided with two grooves for being distributed in upper and lower surface, recessed
Groove bottom is inclined-plane 4 of the both ends to middle shrinkage, and inclined-plane 4 is provided with adjustable stress generator 2, is provided with fixed plate 1 corresponding solid
The atrium of the shape of fixed board 1, some evenly distributed crack-induced devices 3 is provided with atrium both sides, crack-induced device 3 is put in out
On the bottom plate in oral cavity, the both ends of crack-induced device 3 are located in the side wall mounting groove of fixed plate 1, and the preceding surface of atrium is opening, after
Surface is bottom plate.
A kind of induction type concrete bracing performance test apparatus, axis connection between fixed plate 1 and inclined-plane 4, inclined-plane 4 with
Fixed plate 1 keeps rotating, two axis connections between the inclined-plane 4 of 1 long side wall of fixed plate.
A kind of induction type concrete bracing performance test apparatus, crack-induced device 3 are edge-shaped crack-induced device, knife
Degree of lip-rounding crack-induced device is made up of steel plate, and the inside sidewalls of fixed plate 1 are provided with the mounting groove for coordinating edge-shaped crack-induced device, peace
The bottom land of tankage is provided with screwed hole, and the both ends of the surface of edge-shaped crack-induced device are provided with screwed hole, and bolt is fixedly connected with mounting groove
With edge-shaped crack-induced device.
A kind of induction type concrete bracing performance test apparatus, edge-shaped crack-induced device is sharp towards air end
Blade surface, the width of edge-shaped crack-induced device is 55mm, is highly 75mm, and edge-shaped crack-induced device and fixed plate bottom plate
Vertically, it is parallel with fixed plate both ends side wall.
A kind of induction type concrete bracing performance test apparatus, some edge-shaped crack-induced devices are parallel to each other, and
The distance of the edge-shaped crack-induced device of homonymy is 50mm.
A kind of induction type concrete bracing performance test apparatus, adjustable stress generator include the cunning being located on inclined-plane
Rail, slide rail embed length adjuster, and length adjuster keeps sliding by slide rail, and keep sliding on inclined-plane, length adjustment
Be connected the bolt of length adjuster on device.
A kind of induction type concrete bracing performance test apparatus, the section of fixed plate is H shapes.
A kind of induction type concrete bracing performance test apparatus, the connection wall with the fixed plate of inclined-plane axis connection are bullet
Property material is made.
A kind of induction type concrete bracing performance test apparatus, elastomeric material are elastic metallic.
A kind of induction type concrete bracing performance test apparatus, elastic metallic are copper.
A kind of induction type concrete bracing performance test apparatus, fixed plate are made up of steel.
A kind of induction type concrete bracing performance test apparatus, two with the connection wall of the fixed plate of inclined-plane axis connection
Between be provided with connecting plate, connecting plate is provided with screwed hole, and bolt fixes length adjuster through screwed hole.
A kind of induction type concrete bracing performance test apparatus, fixed plate are distributed in upper and lower surface provided with two
Groove, groove floor are inclined-plane of the both ends to middle shrinkage, and inclined-plane is provided with adjustable stress generator, is provided with fixed plate corresponding
The atrium of plate shape is fixed, is respectively provided with two evenly distributed crack-induced devices in atrium both sides, crack-induced device is put in
On atrium bottom plate, crack-induced device both ends are located in the mounting groove of fixed plate side wall, and the preceding surface of atrium is opening, rear table
Face is bottom plate,
The length of fixed plate is 1400mm, width 800mm.
A kind of induction type concrete bracing performance test apparatus, after concrete cracking, crack on unit of account area
Number, the average area of cracks per crack, total area of cracks in unit area, are pressed again after these indicator-specific statistics are good《Coagulation
Native durability check evaluation criterion》Evaluation cracking performance is carried out, it is poor, poor, preferable, good, fine etc. qualitative can be divided into.
A kind of induction type concrete bracing performance test apparatus, coagulation is promoted using length and angle stress generator
Native test specimen quickly produces crack at the most narrow place of experimental rig, and adds concrete cracking probability for experiment, to evaluate concrete
The cracking performance of material provides effective approach, is easy to architectural engineering floor part distress in concrete simulated test.Concrete
Cracking whether is produced under constraints, key is constraints, value of creeping size and stress relaxation effect.Work as concrete
When shrinkage stress is more than the tensile strength of concrete, concrete can produce cracking.But if now concrete creep with
And stress relaxation effect, then concrete shrinkage stress will reduce, Analysis of Concrete Tensile deformation reduce, at this moment concrete may not be opened
Split, and at this moment how increased crack-induced device can have an effect, it adds the weak link of concrete, so as to promote concrete
Cracking.The accuracy that concrete quantifies after cracking is very important requirement, considers that concrete may, receipts most weak in structure
The positions such as stress under compression maximum produce cracking.Therefore experiment it is appropriate to the occasion（20±2）DEG C, relative humidity is（60±5）%, wind speed are（5±
0.5）M/s thermostatic constant wet chamber is carried out, and wind speed is adjusted with fan, and wind direction will be put down to the concrete surface in experimental rig, tested
Data just can be accurate.
A kind of induction type concrete bracing performance test apparatus, its general principle are to make experimental rig per se with can
Stress generator is adjusted, effective cracking induction is implemented in most weakness to detected concrete, and in experimental rig both ends
Portion respectively sets two edge-shaped crack-induced devices, concrete sample crack is induced, when concrete is not in stress generator
During place's cracking, it can also be ftractureed at edge-shaped crack-induced device, or two positions are ftractureed.The housing of experimental rig provides about
Beam, concrete sample is set to produce constraint limitation.The recess both sides of the device be variable-angle adjustable stress generator, concrete
Through measuring, stirring, having prepared and poured into experimental rig and suitably vibrate, spatula smooth out surface is used after vibrating, wind is opened after 30min
Fan and adjust wind speed to setting.The concrete test time calculates since concrete stirring plus water, Ying（24±0.5）Hour
Survey and read distress in concrete.Under the induction of stress generator, the both sides among concrete are made to produce stress concentration, outside the device
Frame provides the constraint of axial direction.When concrete produces contraction, by from adjustable stress generator and experimental rig housing
Constraint, when shrinkage stress is more than concrete tensile strength, exclude stress relaxation effect, concrete can be cracking quickly.
If crack is not ftractureed here, then coagulation can also be promoted by being arranged on the edge-shaped crack-induced device in the middle part of experimental rig both ends
Soil ftractures at persuader, and no matter crack is at which, or occurs can effectively calculating crack occurrence simultaneously at two
The indexs such as bar number, area of cracks.
A kind of induction type concrete bracing performance test apparatus, have it is simple to operate, the test period is short, sensitiveness
The aspects advantages such as by force, the degree of accuracy is high, engineer applied is convenient, the cracking performance of energy efficient quick test concrete material, easily
Reach test objective.
A kind of induction type concrete bracing performance test apparatus, the side wall of inner chamber are provided with humidity detector, and
It is transparent window that the side wall of inner chamber, which is corresponded at humidity detector,.
A kind of induction type concrete bracing performance test apparatus, the side wall of inner chamber are provided with temperature-detecting device, and
It is transparent window at the side wall corresponding temperature detection means of inner chamber.
A kind of induction type concrete bracing performance test apparatus, fixed plate is by bottom plate, top and bottom sidewall and left and right sidewall
Frame is formed by bolt combination together.
It is additionally provided with the inside of a kind of induction type concrete bracing performance test apparatus, top and bottom sidewall and left and right sidewall some
Section baffle plate, baffle plate are connected with the push shaft through side wall close to side wall side, bullet are arranged outside push shaft between the tail end and side wall of push shaft
Spring, push shaft tail end are provided with spring retainer nut.Push shaft tail end is located at side-wall outer side.
Although the present invention is described by reference to preferred embodiment, those of ordinary skill in the art should
Work as understanding, the description of above-described embodiment can be not limited to, in the range of claims, can make each in form and details
Kind change.
Claims (8)
1. a kind of induction type concrete bracing performance test apparatus, including fixed plate, crack-induced device and adjustable stress hair
Raw device, it is characterised in that:Fixed plate is provided with two grooves for being distributed in upper and lower surface, and groove floor is both ends to middle shrinkage
Inclined-plane, inclined-plane is provided with adjustable stress generator, is provided with the atrium of corresponding fixed plate shape in fixed plate, before atrium
Surface is opening, and rear surface is bottom plate, is provided with some evenly distributed crack-induced devices in atrium both sides, crack-induced device is put
In on the bottom plate of atrium, crack-induced device both ends are located at the side wall of fixed plate.
A kind of 2. induction type concrete bracing performance test apparatus according to claim 1, it is characterised in that:It is fixed
Axis connection between plate and inclined-plane, inclined-plane and fixed plate coupling part keep rotating, two positioned at the inclined-plane of the long side wall of fixed plate it
Between axis connection.
A kind of 3. induction type concrete bracing performance test apparatus according to claim 1, it is characterised in that:Crack
Persuader is edge-shaped crack-induced device, and edge-shaped crack-induced device is made up of steel plate, and the inside sidewalls of fixed plate, which are provided with, to be coordinated
The mounting groove of edge-shaped crack-induced device, the bottom land of mounting groove are provided with screwed hole, set in the both ends of the surface of edge-shaped crack-induced device
There is screwed hole, bolt is fixedly connected with mounting groove and edge-shaped crack-induced device.
A kind of 4. induction type concrete bracing performance test apparatus according to claim 3, it is characterised in that:The edge of a knife
Shape crack-induced device is sharp sword face towards air end, and the width of edge-shaped crack-induced device is 55mm, is highly 75mm, and
Edge-shaped crack-induced device is vertical with the bottom plate of fixed plate, parallel with fixed plate both ends side wall.
A kind of 5. induction type concrete bracing performance test apparatus according to claim 4, it is characterised in that:It is some
Edge-shaped crack-induced device is parallel to each other, and the distance of the edge-shaped crack-induced device of homonymy is 50mm.
A kind of 6. induction type concrete bracing performance test apparatus according to claim 1, it is characterised in that:It is adjustable
Stress generator includes the slide rail being located on inclined-plane, and slide rail embeds length adjuster, and length adjuster keeps sliding by slide rail,
And keep sliding on inclined-plane, the bolt for the length adjuster that is connected on length adjuster.
A kind of 7. induction type concrete bracing performance test apparatus according to claim 1, it is characterised in that:It is fixed
The section of plate is H shapes.
A kind of 8. induction type concrete bracing performance test apparatus according to claim 1, it is characterised in that:With it is oblique
The connection wall of the fixed plate of face axis connection is made up of elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720708000.6U CN206818706U (en) | 2017-06-16 | 2017-06-16 | A kind of induction type concrete bracing performance test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720708000.6U CN206818706U (en) | 2017-06-16 | 2017-06-16 | A kind of induction type concrete bracing performance test apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206818706U true CN206818706U (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720708000.6U Expired - Fee Related CN206818706U (en) | 2017-06-16 | 2017-06-16 | A kind of induction type concrete bracing performance test apparatus |
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| Country | Link |
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| CN (1) | CN206818706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709313A (en) * | 2019-02-11 | 2019-05-03 | 河海大学 | A kind of new concrete restrained shrinkage experimental rig and application method |
-
2017
- 2017-06-16 CN CN201720708000.6U patent/CN206818706U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709313A (en) * | 2019-02-11 | 2019-05-03 | 河海大学 | A kind of new concrete restrained shrinkage experimental rig and application method |
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| GR01 | Patent grant | ||
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| 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: 20171229 Termination date: 20180616 |