CN201277925Y - Concrete stress-strain full curve test apparatus with loading speed controllable - Google Patents
Concrete stress-strain full curve test apparatus with loading speed controllable Download PDFInfo
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- CN201277925Y CN201277925Y CNU2008201394087U CN200820139408U CN201277925Y CN 201277925 Y CN201277925 Y CN 201277925Y CN U2008201394087 U CNU2008201394087 U CN U2008201394087U CN 200820139408 U CN200820139408 U CN 200820139408U CN 201277925 Y CN201277925 Y CN 201277925Y
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Abstract
The utility model relates to a concrete tester, in particular to a concrete stress-strained full curve tester which has controllable loading speed and comprises a base, a prop stay, a main actuator, a slave actuator and a work table, wherein the base is provided with the prop stay, the other end of which is connected with an upper cross beam, the work table is sleeve on the prop stay, the upper side and the lower side of the work table are respectively provided with an upper loading board and a lower loading board which are connected by a guide rod passing through the work table, the other end of the upper loading board is connected with the upper cross beam through the main actuator, the other end of the lower loading board is connected with the slave actuator, and the work table is provided with a pulling sensor assembly and a pressure sensor assembly which are connected with the work table in the pull and press tests. The concrete tester has the advantages that the complete stress-strained full curve can be obtained; the strain rate of tested pieces can be controlled, and the pulling-pressing stress-strained full curve in different strain rates can be measured; the change of the strain rate in the testing process is reduced, and the constant speed loading is fundamentally achieved.
Description
Technical field:
The utility model relates to the concrete test device, specifically a kind of concrete stress strain full curve test unit of controlled loading speed.
Background technology:
Concrete in uniaxial tension and compression constitutive relation is the basis of xoncrete structure research, comprising as important mechanical performance indexs such as intensity, ultimate deformation, elastic modulus, it is an important evidence of concrete failure mechanism of research and strength theory, is again accurately to analyze the indispensable theoretical foundation of xoncrete structure performance.
The research great majority of concrete material performance concentrate on its static properties, but in actual environment, industrial, civilian and military buildings is not only bearing the effect of static load, also inevitably suffer from the effect of dynamic loads such as earthquake, impact, blast, the attack of train vibration enemy bullet, though, these loads are not all to act on structurally all the time, but because its unpredictability reaches structural damage, make them often become the key factor of control structure design.And the dynamic property of present concrete material is the weak link in large-sized concrete structural design and the quake-resistant safety evaluation, and especially in recent years, building is taken place by the accident of the attack of terrorism repeatedly, and the importance of concrete Research on Dynamic Characteristic more looms large.
Relevant concrete dynamic perfromance, strictness is concrete rate of strain correlation properties in fact, find for the first time that from Abrams in 1917 there is rate susceptibility in the dynamic compressive strength of concrete so far, people to the dynamic mechanical of concrete under different strain rate promptly the relevant mechanical property of rate carried out extensive studies.But the power load test is more than static(al) load test complexity, mostly present experimental study is to carry out under the condition of no initial static load, and mostly actual xoncrete structure is to bear dynamic loads on the basis of static load again bearing, trace it to its cause, mainly be because there is not suitable device to realize, therefore, be badly in need of a kind of device of exploitation and can under certain load, record the concrete in uniaxial tension and compression ess-strain full curve under the different strain rate.
The utility model content:
The purpose of this utility model is to carry out comprehensive and systematic test by test unit, and a kind of concrete stress strain full curve test unit of controlled loading speed is provided.
The utility model adopts following technical scheme:
A kind of concrete stress strain full curve test unit of controlled loading speed, comprise base, pillar, main actuator, from actuator, workbench, it is characterized in that: on the described base pillar is housed, the other end of this pillar is connected with entablature, be set with workbench on the described pillar, the above and below of described workbench is equipped with load plate and following load plate respectively, both are connected by the guide rod that passes workbench for this, the other end that should go up load plate is connected with described entablature by main actuator, the other end of this time load plate be connected from actuator, this workbench is equipped with it and draws, the pulling force sensor assembly and the pressure transducer assembly that connect when pressing test.
The utility model compared with prior art has following advantage:
1. owing to the load of main actuator in process of the test remains unchanged, so the power that acts on load plate and the entablature is constant, and then can avoid the interference of the variation of test unit distortion to curve descending branch measurement stability, obtain complete ess-strain full curve;
2. by control from the velocity of displacement of actuator, can control the rate of strain of test specimen, record that concrete in uniaxial under the different strain rate is drawn, the compressive stress strain full curve;
3. can make the distortion of test specimen by the rigidity of adjusting guide rod and, reduce the variation (ratio of test specimen maximum instantaneous strain rate and average strain rate is less than 2.0) of strain rate in the process of the test, reach at the uniform velocity loading substantially from the sexual intercourse of actuator displacement retention wire.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Embodiment:
Below in conjunction with drawings and Examples in detail the utility model is described in detail;
Embodiment 1:
A kind of concrete stress strain full curve test unit of controlled loading speed, referring to accompanying drawing 1, by base 1, pillar 2, down load plate 3, nut 4, workbench 5, nut 6, go up load plate 7, main actuator 8, entablature 9, on connect bearing 10, pressure transducer 11, go up ball hinged support 12, pulling force length travel sensor 13, pulling force transversal displacement sensor 14, down ball hinged support 16, down connection bearing 17, guide rod 18, form from actuator 19.
Wherein pressure transducer 11, pressure length travel sensor 13, pressure transversal displacement sensor 14 constitute the pressure transducer assembly of present embodiment.
Adopt electro-hydraulic control from actuator 19, test specimen 15 is placed between load plate 7 and the workbench 5, the speed that load plate 3 moves up under the control, thereby realize the uniaxial compression stress-strain diagram speed of control test specimen 15, when the test specimen to different length carries out the uniaxial compression test, can regulate the nut 4 and the relation of the fixed position between nut 6 and the pillar 2 at workbench 5 two ends.
Embodiment 2:
A kind of concrete stress strain full curve test unit of controlled loading speed, referring to accompanying drawing 2, by base 1, pillar 2, down load plate 3, nut 4, workbench 5, nut 6, go up load plate 7, main actuator 8, entablature 9, on connect bearing 10, pulling force sensor 11, go up ball hinged support 12, pulling force length travel sensor 13, pulling force transversal displacement sensor 14, down ball hinged support 16, down connection bearing 17, guide rod 18, form from actuator 19.
Wherein pulling force sensor 11, pulling force length travel sensor 13, pulling force transversal displacement sensor 14 constitute the pulling force sensor assembly of present embodiment.
Adopt electro-hydraulic control from actuator 19, test specimen 15 is placed between workbench 5 and the following load plate 3, the speed that load plate 3 moves down under the control, thereby realize the single shaft tension stress-strain diagram speed of control test specimen 15, carry out the single shaft tension at the test specimen to different length and draw when test, nut 4 and the fixed position between nut 6 and the pillar 2 that can regulate workbench 5 two ends concern.
Claims (3)
1, a kind of concrete stress strain full curve test unit of controlled loading speed, comprise base, pillar, main actuator, from actuator, workbench, it is characterized in that: on the described base pillar is housed, the other end of this pillar is connected with entablature, be set with workbench on the described pillar, the above and below of described workbench is equipped with load plate and following load plate respectively, both are connected by the guide rod that passes workbench for this, the other end that should go up load plate is connected with described entablature by main actuator, the other end of this time load plate be connected from actuator, this workbench is equipped with it and draws, the pulling force sensor assembly and the pressure transducer assembly that connect when pressing test.
2, the concrete stress strain full curve test unit of controlled loading speed according to claim 1, an end that it is characterized in that the pressure transducer in the described pressure transducer assembly is connected with the described load plate that goes up by last connection bearing, its other end is connected with test specimen by last ball hinged support, the other end of test specimen successively by following ball hinged support with under be connected bearing and be connected with workbench, pressure length travel sensing and pressure transversal displacement sensor in the sensor unit are housed on this test specimen.
3, the concrete stress strain full curve test unit of controlled loading speed according to claim 1, an end that it is characterized in that the pulling force sensor in the described pulling force sensor assembly is connected with described workbench by last connection bearing, its other end is connected with test specimen by last ball hinged support, the other end of test specimen by following ball hinged support with under be connected bearing and be connected with following load plate, pulling force length travel sensing and pulling force transversal displacement sensor in the pulling force sensor assembly are housed on this test specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201394087U CN201277925Y (en) | 2008-10-30 | 2008-10-30 | Concrete stress-strain full curve test apparatus with loading speed controllable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201394087U CN201277925Y (en) | 2008-10-30 | 2008-10-30 | Concrete stress-strain full curve test apparatus with loading speed controllable |
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| CN201277925Y true CN201277925Y (en) | 2009-07-22 |
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| CNU2008201394087U Expired - Fee Related CN201277925Y (en) | 2008-10-30 | 2008-10-30 | Concrete stress-strain full curve test apparatus with loading speed controllable |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288485A (en) * | 2011-05-12 | 2011-12-21 | 河海大学 | Large-sized fully graded concrete axial-tension tester |
| CN102353588A (en) * | 2011-07-06 | 2012-02-15 | 北京航空航天大学 | Device and method for testing normal-temperature and high-temperature compression stress relaxation of rubber |
| CN102944568A (en) * | 2012-12-03 | 2013-02-27 | 东南大学 | Cement-based test piece in-situ loading instrument for industrial X-CT (X-ray computered tomography) and use method thereof |
| CN103499329A (en) * | 2013-09-10 | 2014-01-08 | 中国工程物理研究院化工材料研究所 | Device and method for testing radial deformation of rubber compression test-piece |
| CN104237015A (en) * | 2014-10-17 | 2014-12-24 | 清华大学苏州汽车研究院 | High-speed dynamic compression testing device |
| CN104237014A (en) * | 2014-10-17 | 2014-12-24 | 清华大学苏州汽车研究院 | High-speed dynamic compression test device |
| CN104237016A (en) * | 2014-10-17 | 2014-12-24 | 清华大学苏州汽车研究院 | High-speed dynamic compression testing device |
| CN105466758A (en) * | 2015-11-18 | 2016-04-06 | 重庆大学 | A loading device capable of eliminating influences of friction and controlling column axial force and a method |
| CN106644330A (en) * | 2015-10-29 | 2017-05-10 | 中国电力科学研究院 | Transformer substation composite material bushing anti-seismic limit bearing capacity parameter calibration method |
| CN106896026A (en) * | 2017-03-16 | 2017-06-27 | 平安煤炭开采工程技术研究院有限责任公司 | Tensile test apparatus and method |
| CN107884292A (en) * | 2017-10-18 | 2018-04-06 | 潍坊科技学院 | A kind of complementary energy of curvature-prevention support component and remaining life Forecasting Methodology and device |
| CN110174232A (en) * | 2019-05-09 | 2019-08-27 | 太原理工大学 | It is a kind of simulation component by long-term xial feed and impact coupling disaster experimental rig, system and method |
| WO2020206921A1 (en) * | 2019-04-12 | 2020-10-15 | 山东科技大学 | True triaxial testing machine with adjustable loading stiffness and testing method |
| CN113447344A (en) * | 2021-07-15 | 2021-09-28 | 中国科学院地质与地球物理研究所 | Test equipment and method for simulating performance of rock-soil body under action of tension-compression dynamic wave |
| CN114062167A (en) * | 2021-11-15 | 2022-02-18 | 哈尔滨工业大学（深圳） | Method for accurately controlling constant strain rate of normal-temperature sample of universal testing machine in stretching process |
-
2008
- 2008-10-30 CN CNU2008201394087U patent/CN201277925Y/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288485A (en) * | 2011-05-12 | 2011-12-21 | 河海大学 | Large-sized fully graded concrete axial-tension tester |
| CN102353588A (en) * | 2011-07-06 | 2012-02-15 | 北京航空航天大学 | Device and method for testing normal-temperature and high-temperature compression stress relaxation of rubber |
| CN102353588B (en) * | 2011-07-06 | 2014-06-18 | 北京航空航天大学 | Device and method for testing normal-temperature and high-temperature compression stress relaxation of rubber |
| CN102944568A (en) * | 2012-12-03 | 2013-02-27 | 东南大学 | Cement-based test piece in-situ loading instrument for industrial X-CT (X-ray computered tomography) and use method thereof |
| CN103499329B (en) * | 2013-09-10 | 2017-01-11 | 中国工程物理研究院化工材料研究所 | Device and method for testing radial deformation of rubber compression test-piece |
| CN103499329A (en) * | 2013-09-10 | 2014-01-08 | 中国工程物理研究院化工材料研究所 | Device and method for testing radial deformation of rubber compression test-piece |
| CN104237015A (en) * | 2014-10-17 | 2014-12-24 | 清华大学苏州汽车研究院 | High-speed dynamic compression testing device |
| CN104237014A (en) * | 2014-10-17 | 2014-12-24 | 清华大学苏州汽车研究院 | High-speed dynamic compression test device |
| CN104237016A (en) * | 2014-10-17 | 2014-12-24 | 清华大学苏州汽车研究院 | High-speed dynamic compression testing device |
| CN106644330A (en) * | 2015-10-29 | 2017-05-10 | 中国电力科学研究院 | Transformer substation composite material bushing anti-seismic limit bearing capacity parameter calibration method |
| CN106644330B (en) * | 2015-10-29 | 2018-03-30 | 中国电力科学研究院 | A kind of scaling method of transformer station's composite sleeve antidetonation ultimate bearing force parameter |
| CN105466758A (en) * | 2015-11-18 | 2016-04-06 | 重庆大学 | A loading device capable of eliminating influences of friction and controlling column axial force and a method |
| CN105466758B (en) * | 2015-11-18 | 2018-05-08 | 重庆大学 | The loading device and method that frictional influence can be eliminated and column axial force can be controlled |
| CN106896026A (en) * | 2017-03-16 | 2017-06-27 | 平安煤炭开采工程技术研究院有限责任公司 | Tensile test apparatus and method |
| CN107884292A (en) * | 2017-10-18 | 2018-04-06 | 潍坊科技学院 | A kind of complementary energy of curvature-prevention support component and remaining life Forecasting Methodology and device |
| WO2020206921A1 (en) * | 2019-04-12 | 2020-10-15 | 山东科技大学 | True triaxial testing machine with adjustable loading stiffness and testing method |
| US11085858B1 (en) | 2019-04-12 | 2021-08-10 | Shandong University Of Science And Technology | True triaxial tester with adjustable loading stiffness and test method |
| CN110174232A (en) * | 2019-05-09 | 2019-08-27 | 太原理工大学 | It is a kind of simulation component by long-term xial feed and impact coupling disaster experimental rig, system and method |
| CN113447344A (en) * | 2021-07-15 | 2021-09-28 | 中国科学院地质与地球物理研究所 | Test equipment and method for simulating performance of rock-soil body under action of tension-compression dynamic wave |
| CN114062167A (en) * | 2021-11-15 | 2022-02-18 | 哈尔滨工业大学（深圳） | Method for accurately controlling constant strain rate of normal-temperature sample of universal testing machine in stretching process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20101030 |