CN208206675U - A kind of concrete load and Frozen-thawed cycled coupling test device - Google Patents
A kind of concrete load and Frozen-thawed cycled coupling test device Download PDFInfo
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- CN208206675U CN208206675U CN201820921089.9U CN201820921089U CN208206675U CN 208206675 U CN208206675 U CN 208206675U CN 201820921089 U CN201820921089 U CN 201820921089U CN 208206675 U CN208206675 U CN 208206675U
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- concrete
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- thawed cycled
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Abstract
The utility model discloses a kind of concrete loads and Frozen-thawed cycled coupling test device, including concrete load bringing device and freeze thawing couples cartridge, concrete sample is provided in concrete load bringing device, and integral assembling, in Frozen-thawed cycled couples cartridge, the concrete load Frozen-thawed cycled coupling device is freezed or is melted by freezing-thawing test machine.The utility model is further applied load to concrete sample by tension spring, and to realize the coupling of Frozen-thawed cycled and load, the strain of concrete sample is recorded by concrete strain test macro during being somebody's turn to do；The utility model can also carry out uniaxial compression test to the load bringing device after Frozen-thawed cycled, and pressure can all act on sample；The utility model is easy to operate, can effective model engineering concrete in practice freeze-thaw damage, and be able to record load coupled with Frozen-thawed cycled and Failure under Uniaxial Compression in sample stress-strain relation.
Description
Technical field
The utility model discloses a kind of concrete loads and Frozen-thawed cycled coupling test device, are related to concrete freeze thawing and follow
Ring test research.
Background technique
Freeze-thaw damage be inner aqueous or the concrete contacted for a long time with water occur under positive subzero temperature alternating action by table
Destruction is degraded in and.In cold regions engineering, Frozen-thawed cycled will lead to mechanical performance of concrete deterioration and destroy its integrality, thus
Influence integrally-built stability.While concrete is by Frozen-thawed cycled, itself is in loading status.Accordingly, it is considered to freeze thawing
Circulation can more reflect practical problem with the destruction under load synergy, and existing freezing-thawing test machine rarely has the work for considering load
With.And it yet there are no the experimental rig that can be compressed to the concrete sample after load and Frozen-thawed cycled coupling so far.
Based on this, one kind is needed to can be realized load and Frozen-thawed cycled coupling, and the sample after effect is able to carry out
The freezing-thawing test device of compression test with the freeze-thaw damage of better simulation concrete, and can obtain test data abundant, be
The further investigation of concrete through freeze-thaw test provides foundation.
Utility model content
The utility model provides a kind of concrete load and couples examination with Frozen-thawed cycled the defects of for above-mentioned background technique
Experiment device, can more preferably simulate the freeze-thaw damage of concrete in Practical Project, and can obtain load coupled with Frozen-thawed cycled and
The stress-strain relation of sample in Failure under Uniaxial Compression.
To achieve the above object, the technical solution adopted in the utility model is as follows: a kind of concrete load and Frozen-thawed cycled
Coupling test device, including concrete load bringing device and freeze thawing couples cartridge are provided in concrete load bringing device mixed
Solidifying soil sample, and integral assembling is in Frozen-thawed cycled couples cartridge；The concrete load Frozen-thawed cycled coupling device passes through freeze thawing
Testing machine is freezed or is melted；The concrete load bringing device includes I-shaped top plate and bottom plate and at least three
Tension spring；The pulling force of tension spring and the tensile elongation of tension spring are related, can be calculated；Described tension spring one end with
Bottom plate is fixedly connected, and one end is fixedly connected with screw rod；Screw rod passes through the lower plate of top plate；It is equipped between the lower plate and bottom plate of top plate
Concrete sample, the pre-buried strain transducer in concrete sample inside, is installed with nut in the other end of screw rod, makes top plate, coagulation
Axially position is realized between soil sample, bottom plate and keeps the load applied to concrete sample.
Further, the freeze thawing couples cartridge is rectangular-shape box with cover made of rubber, and rubber is the rubber of resistance to jelly,
And multiple concrete load bringing devices can be put into a box, the freeze thawing couples cartridge includes box body and box cover.
Further, the medium level being filled in the freeze thawing couples cartridge is 10- higher than concrete load bringing device
20mm。
Further, the freeze thawing medium is selected from one of water or salting liquid.
Further, the strain transducer is electrically connected with data collection system, and the strain transducer and data acquire
System group becomes concrete strain test macro.
Further, the screw rod, which is uniformly distributed, is connected on top plate, and spring washer is additionally provided between nut and lower plate, leads to
It crosses nut and screw rod is fixed on upper frame, spring washer prevents nut from pitching.
Further, cavity structure is used inside the I-beam wheel.
The utility model configures concrete according to test requirements document, and in the embedding strain sense in advance of concrete sample forming process
Device is answered, after concrete sample molding, concrete sample is mounted between top plate and bottom plate, is had according to specimen length selection
The tension spring of appropriate initial length and stiffness factor sets lotus to ensure that spring has enough elongate spaces and can apply
It carries, then stretches tension spring and be further applied load to sample, each spring upper pulling force should be consistent, and ignore the weight of screw rod, nut etc.
Power influences, and the pressure that sample is born is the sum of top plate gravity and spring tension, then the concrete load for exerting load is applied
Feeder apparatus is integrally put into freeze thawing couples cartridge, the medium filled in freeze thawing couples cartridge；Freeze thawing couples cartridge is placed in freezing-thawing test
In machine, freezing-thawing test is carried out by the freeze thawing parameter cyclic of setting, the strain of concrete is tested by concrete strain during being somebody's turn to do is
System record.
According to testing program, the device for carrying out specific freezing-thawing cycles is taken out and carries out uniaxial compression test；Upper frame, bottom
Directly and sample contacts, and load is generated plate by spring elongation；Single shaft compressor can be done directly on sample to the pressure of device；
The stress-strain diagram of sample can be obtained in the stress-strain diagram for obtaining concrete load bringing device first after being adjusted.
Further, the spring is in tensional state, will not share the pressure of single shaft compressor, and mixes in compression process
Solidifying soil sample deformation is smaller, it is believed that spring tension is constant in compression process.
Further, the gravity for ignoring screw rod, nut etc. influences, and the pressure that sample is born is believed that single shaft compressor institute
The sum of pressure, top plate gravity and spring tension of application.
Further, strain measured in uniaxial compression test is the ratio of sample deformation value and load bringing device height
Value, and sample actual strain is the ratio of sample deformation value and specimen height.
The utility model is further applied load to concrete sample by tension spring, to realize the coupling of Frozen-thawed cycled and load
It closes, the strain of concrete sample is recorded by concrete strain test macro during being somebody's turn to do；Upper frame and bottom plate directly and sample contacts,
And spring is in tensional state, therefore when progress uniaxial compression test, pressure can all act on sample.Device operation letter
Just, can effective model engineering concrete in practice freeze-thaw damage, and be able to record that load couple with Frozen-thawed cycled and single shaft is pressed
The stress-strain relation of sample in compression process.
Detailed description of the invention
The load bringing device schematic diagram of Fig. 1 the utility model；
The schematic diagram of load bringing device after Fig. 2 the utility model is further applied load；
The freeze thawing couples cartridge schematic diagram of Fig. 3 the utility model.
Specific embodiment
The implementation of technical solution is described in further detail with reference to the accompanying drawing.Following embodiments is only used for more
The technical solution of the utility model is clearly demonstrated, and cannot be used as a limitation the limitation protection scope of the utility model.
As shown in Fig. 1 ~ 3, a kind of concrete load and Frozen-thawed cycled coupling test device of the utility model, including coagulation
Native load bringing device and freeze thawing couples cartridge are provided with concrete sample 5 in concrete load bringing device, and integral assembling exists
In Frozen-thawed cycled couples cartridge；The concrete load Frozen-thawed cycled coupling device is freezed or is melted by freezing-thawing test machine；
The concrete load bringing device includes I-shaped top plate 1, bottom plate 9 and at least three tension springs 6；The pulling force bullet
6 one end of spring is fixedly connected with 9 top of bottom plate, and one end is fixedly connected with screw rod 4；Screw rod 4 passes through the lower plate of top plate 1；Under top plate 1
Concrete sample 5, the 5 pre-buried strain transducer 7 in inside of concrete sample, in the other end of screw rod 4 are installed between plate and bottom plate 9
It is installed with nut 2, makes top plate 1, concrete sample 5, realize axially position between bottom plate 9 and keep applying concrete sample 5
Load.
The freeze thawing couples cartridge is rectangular-shape box with cover made of rubber, and rubber is the rubber of resistance to jelly, and a box
Multiple concrete load bringing devices can be put into son, the freeze thawing couples cartridge includes box body 11 and box cover 10.
The medium level being filled in concrete load freeze thawing coupling device is 10- higher than concrete load bringing device
20mm。
The freeze thawing medium is selected from one of water or salting liquid.
The strain transducer 7 is electrically connected with data collection system 8, the strain transducer 7 with 8 groups of data collection system
As concrete strain test macro.
The screw rod 4, which is uniformly distributed, to be connected on top plate 1, and spring washer 3 is additionally provided between nut 2 and lower plate.
Cavity structure is used inside the I-beam wheel.
As shown in Fig. 2, the utility model configures concrete according to test requirements document, and preparatory in concrete sample forming process
Concrete sample is mounted between top plate and bottom plate by embedding strain inductor after concrete sample molding, is then stretched and is drawn
Power spring is further applied load to sample, and each spring upper pulling force should be consistent, and the pulling force that should apply according to each spring calculates spring
Elongation, tightens nut after spring reaches predetermined elongation amount, and screw rod is fixed on top plate by nut.Tension spring is in
Tensional state, the pressure that sample is born are the sum of all spring tensions and top plate gravity, then the concrete that will exert load
Load bringing device is integrally put into freeze thawing couples cartridge, the medium filled in freeze thawing couples cartridge；Freeze thawing couples cartridge is placed in jelly
Melt in testing machine, carries out freezing-thawing test by the freeze thawing parameter cyclic of setting, the pressure that concrete is born during being somebody's turn to do is spring
The gravity of generated pulling force and top plate, strain are recorded by concrete strain test macro.
According to testing program, the device for carrying out specific freezing-thawing cycles is taken out and carries out uniaxial compression test；Upper frame, bottom
Plate is directly between upper frame and bottom plate with sample contacts, spring, and is in tensional state, therefore spring will not share uniaxial pressure
The pressure that contracting machine applies, model YAW -2000B type microcomputer of single shaft compressor controls Rock Under Uniaxial Compression pressure testing machine, uniaxial
Compressor can act on sample by upper frame and bottom plate to the pressure of device；Measured stress σ is single shaft compressor in test
Pressure F1With the ratio between specimen cross sectional area S F1/ S, sample actual stress σ’For single shaft compressor pressure F1, upper frame gravity G, spring
Pulling force F2The sum of with the ratio between specimen cross sectional area (F1+G+F2)/S can be calculated by adjusting after.It is measured in test to answer
Become ε as the ratio between sample deformation value Δ H and load bringing device height H Δ H/H, sample actual strain ε’For sample deformation value Δ H
With the ratio between specimen height h Δ H/h, can be obtained by adjusting after.
The utility model is further applied load to concrete sample by tension spring, to realize the coupling of Frozen-thawed cycled and load
It closes, stress remains unchanged during being somebody's turn to do, and strain is detected by concrete strain test macro；Upper frame and bottom plate in uniaxial compression test
Directly and sample contacts, and spring is in tensional state, therefore pressure can all act on sample, should during stress can pass through
In addition adjustment obtains after the gravity of spring tension and top plate, strain can pass through concrete sample and device entire length relationship
It is obtained after adjustment.The device is easy to operate, can effective model engineering concrete in practice freeze-thaw damage, and be able to record load
Coupled with Frozen-thawed cycled and Failure under Uniaxial Compression in sample stress-strain relation.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change
It also should be regarded as the protection scope of the utility model into deformation.
Claims (7)
1. a kind of concrete load and Frozen-thawed cycled coupling test device, including concrete load bringing device and freeze thawing coupling
Box is provided with concrete sample in concrete load bringing device, and integral assembling is in Frozen-thawed cycled couples cartridge；Its feature exists
In the concrete load bringing device includes I-shaped top plate and bottom plate and at least three tension springs；The pulling force bullet
Spring one end is fixedly connected with bottom plate, and one end is fixedly connected with screw rod；Screw rod passes through the lower plate of top plate；The lower plate of top plate and bottom plate it
Between concrete sample is installed, pre-buried strain transducer, is installed with nut in the other end of screw rod, makes to push up inside concrete sample
Plate, concrete sample realize axially position between bottom plate and keep the load applied to concrete sample.
2. a kind of concrete load according to claim 1 and Frozen-thawed cycled coupling test device, which is characterized in that freeze thawing
Couples cartridge is rectangular-shape box with cover made of rubber, and rubber is the rubber of resistance to jelly, and can be put into a box multiple mixed
Solidifying soil load bringing device.
3. a kind of concrete load according to claim 1 and Frozen-thawed cycled coupling test device, which is characterized in that filling
Freeze thawing medium level in freeze thawing couples cartridge is 10-20mm higher than concrete load bringing device.
4. a kind of concrete load according to claim 1 and Frozen-thawed cycled coupling test device, which is characterized in that freeze thawing
Medium is selected from one of water or salting liquid.
5. a kind of concrete load according to claim 1 and Frozen-thawed cycled coupling test device, which is characterized in that strain
Sensor is electrically connected with data collection system, and the strain transducer and data collection system group become concrete strain test system
System.
6. a kind of concrete load according to claim 1 and Frozen-thawed cycled coupling test device, which is characterized in that described
Screw rod, which is uniformly distributed, to be connected on top plate, and spring washer is additionally provided between nut and lower plate.
7. a kind of concrete load according to claim 1 and Frozen-thawed cycled coupling test device, which is characterized in that described
Cavity structure is used inside I-beam wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820921089.9U CN208206675U (en) | 2018-06-14 | 2018-06-14 | A kind of concrete load and Frozen-thawed cycled coupling test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820921089.9U CN208206675U (en) | 2018-06-14 | 2018-06-14 | A kind of concrete load and Frozen-thawed cycled coupling test device |
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| CN208206675U true CN208206675U (en) | 2018-12-07 |
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| CN201820921089.9U Expired - Fee Related CN208206675U (en) | 2018-06-14 | 2018-06-14 | A kind of concrete load and Frozen-thawed cycled coupling test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118695A (en) * | 2019-05-23 | 2019-08-13 | 南京工程学院 | A kind of constant stress load hydrogen permeability experimental facility and test method |
| CN112763533A (en) * | 2020-12-12 | 2021-05-07 | 马鞍山市国林建材有限公司 | A Z shape concrete hollow block freeze thawing cycle test device for concrete processing |
| CN114002053A (en) * | 2021-11-04 | 2022-02-01 | 湖南水利水电职业技术学院 | Freezing and thawing and loading synchronous test device and test method |
-
2018
- 2018-06-14 CN CN201820921089.9U patent/CN208206675U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118695A (en) * | 2019-05-23 | 2019-08-13 | 南京工程学院 | A kind of constant stress load hydrogen permeability experimental facility and test method |
| CN110118695B (en) * | 2019-05-23 | 2021-11-30 | 南京工程学院 | Constant stress loading hydrogen permeation experimental device and method |
| CN112763533A (en) * | 2020-12-12 | 2021-05-07 | 马鞍山市国林建材有限公司 | A Z shape concrete hollow block freeze thawing cycle test device for concrete processing |
| CN114002053A (en) * | 2021-11-04 | 2022-02-01 | 湖南水利水电职业技术学院 | Freezing and thawing and loading synchronous test device and test method |
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| GR01 | Patent grant | ||
| 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: 20181207 Termination date: 20210614 |