CN201852748U - Loading tester for concrete proportion loading tri-axial pressure - Google Patents
Loading tester for concrete proportion loading tri-axial pressure Download PDFInfo
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- CN201852748U CN201852748U CN2010206325983U CN201020632598U CN201852748U CN 201852748 U CN201852748 U CN 201852748U CN 2010206325983 U CN2010206325983 U CN 2010206325983U CN 201020632598 U CN201020632598 U CN 201020632598U CN 201852748 U CN201852748 U CN 201852748U
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Abstract
The utility model discloses a loading tester for concrete proportion loading tri-axial pressure, which is used for testing the mechanical strength of a concrete test piece under tri-axial born proportion pressure. The loading tester comprises three sets of pressure loading mechanisms and hydraulic control mechanisms, wherein a concrete test piece (11) is arranged at the center of the three sets of pressure loading mechanisms which are orthogonal to each other in the axial direction. The loading tester can be used for measuring the mechanical strength of the concrete test piece under the tri-axial born proportion pressure, and can be used for directly measuring the effective load value of pressure applied to the test piece.
Description
Technical field
The utility model relates to mechanical structure field, relates in particular to a kind of concrete sample is subjected to the physical strength under the ratio pressure at three bearings loading test device that is used to measure.
Background technology
Along with Chinese economic development, Large scale construction is all being carried out in town and country.Can use materials such as building block, concrete in the building operation.And these materials also will finally influence the quality of building.Buildings now often takes place because of the crack appears in construction quality problem, body of wall comes off, tilts even collapses.For fear of the appearance of afterwards jerry-built project, before construction or in the work progress materials such as building block, concrete to be detected be very important, can improve engineering construction quality largely.
Xoncrete structure in the actual engineering is in multi-axis stress state mostly, but the unified standard that does not also have the test of concrete multiaxis at present in the world, cause the design theory of xoncrete structure is all designed by uniaxial stress state, illustrate that theoretical research do not satisfy the needs of engineering practical development far away, wherein most important reason is the experimental study that also rests on concrete in uniaxial stress state as the test method of fundamental research, does not also have the mechanical performance of concrete test method of effective multi-axis stress state.
In addition, material such as building block, concrete situation of compression damage in buildings is modal, existing test mode is directly put into pressing machine with test specimen usually, single shaft comes indirect obtaining to act on the pressure useful load value of test specimen to exerting pressure by the internal liquid pressure that reads pressing machine.But hydraulic oil is boosted by oil pump and supercharger, and oil pressure loss is arranged when oil guide pipe and valve, oil pressure everywhere and unusual value, but also need deduction to load between piston and the cylinder wall and friction resistance that O-ring seal etc. is located.Therefore the expulsive force that FTP produced of hydraulic cylinder and not exclusively be the pressure useful load value that puts on the test specimen determines to be applied to load on the test specimen with the method for measurement hydraulic pressure, is not to be ideal scheme.
Summary of the invention
The purpose of this utility model provides the loading test device that a kind of concrete ratio loads three axial compressions, is used to measure concrete sample and is subjected to physical strength under the ratio pressure at three bearings, can directly measure the pressure useful load value that puts on the test specimen.
The purpose of this utility model is achieved through the following technical solutions:
A kind of concrete ratio loads the loading test device of three axial compressions, is used to measure concrete sample 11 and is subjected to physical strength under the ratio pressure at three bearings, comprising: three groups of pressure-loaded mechanisms and hydraulic control; Concrete sample 11 is positioned at the pressure-loaded mechanism center of three groups of axial mutually orthogonal layouts;
Described each group pressure-loaded mechanism comprises a cover bearing frame, pressurization oil cylinder 7, two loading heads 9 and load pressure sensors 8;
Be provided with loading head 9 and pressure transducer 8 between an axial side of the quadrature of concrete sample 11 and this axial bearing frame from inside to outside; Be provided with loading head 9 and pressurization oil cylinder 7 between another side and this axial bearing frame from inside to outside;
Be provided with loading head 9 and pressure transducer 8 between the side that another of the quadrature of concrete sample 11 is axial and this axial bearing frame from inside to outside; Be provided with loading head 9 and pressurization oil cylinder 7 between another side and this axial bearing frame from inside to outside;
Be provided with loading head 9 and pressure transducer 8 between the 3rd an axial side of the quadrature of concrete sample 11 and this axial bearing frame from inside to outside; Be provided with loading head 9 and pressurization oil cylinder 7 between another side and this axial bearing frame from inside to outside;
Hydraulic control connects three pressurization oil cylinders 7 and applies ratio pressure to three oil cylinders.
Described each group pressure-loaded mechanism also comprises rebound 6, is located at respectively between pressurization oil cylinder 7 and bearing frame.
Described each group pressure-loaded mechanism also comprises backing plate 5, is located at respectively between pressure transducer 8 and bearing frame.
Described bearing frame comprises respectively: two loading plates 1 and two cocainine thick sticks 3, and mutually by the formation rectangular frame that is threaded.
In described three groups of pressure-loaded mechanisms wherein two groups of load maintainers freely be positioned on worktable or the rack rail.
The technical scheme that provides from the utility model as can be seen, the concrete ratio that the utility model embodiment provides loads the loading test device of three axial compressions, can be used to measure concrete sample and be subjected to physical strength under the ratio pressure, can directly measure the pressure useful load value that puts on the test specimen at three bearings.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The concrete ratio that Fig. 1 provides for the utility model embodiment loads the synoptic diagram of structure vertical view of the loading test device of three axial compressions;
The concrete ratio that Fig. 2 provides for the utility model embodiment loads the synoptic diagram of structural front view of the loading test device of three axial compressions;
The concrete ratio that Fig. 3 provides for the utility model embodiment loads the hydraulic control synoptic diagram of the loading test device of three axial compressions.
Fig. 4 is the stressed synoptic diagram of test specimen.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on embodiment of the present utility model, those of ordinary skills belong to protection domain of the present utility model not making the every other embodiment that is obtained under the creative work prerequisite.
Below in conjunction with accompanying drawing the utility model embodiment is described in further detail.
Embodiment one
As Fig. 1 and shown in Figure 2:
A kind of concrete ratio loads the loading test device of three axial compressions, is used to measure concrete sample 11 and is subjected to physical strength under the equal proportion pressure at three bearings, comprising: three groups of pressure-loaded mechanisms and hydraulic control; Concrete sample 11 is positioned at the pressure-loaded mechanism center of three groups of axial mutually orthogonal layouts;
Each group pressure-loaded mechanism includes a cover bearing frame, pressurization oil cylinder 7, two loading heads 9 and load pressure sensors 8; Concrete sample 11 is positioned at the bearing frame center of two groups of axial quadrature arrangement;
One of the quadrature of concrete sample 11 axially as directions X, is provided with loading head 9 and pressure transducer 8 from inside to outside between a side of directions X and this axial bearing frame; Be provided with loading head 9 and pressurization oil cylinder 7 between another side and this axial bearing frame from inside to outside;
Another of the quadrature of concrete sample 11 is axial, as the Y direction, is provided with loading head 9 and pressure transducer 8 between a side of Y direction and this axial bearing frame from inside to outside; Be provided with loading head 9 and pressurization oil cylinder 7 between another side and this axial bearing frame from inside to outside;
The 3rd of the quadrature of concrete sample 11 axially as the Z direction, is provided with loading head 9 and pressure transducer 8 from inside to outside between a side of Z direction and this axial bearing frame; Be provided with loading head 9 and pressurization oil cylinder 7 between another side and this axial bearing frame from inside to outside;
Wherein, pressure transducer 8 is fixed on the bearing frame, and loading head 9 is fixed on the pressure transducer 8, and pressurization oil cylinder 7 is fixed on the bearing frame, and loading head 9 is fixed on the pressurization oil cylinder 7.Hydraulic control connects three pressurization oil cylinders 7 and applies ratio pressure to three oil cylinders, and then six loading heads 9 can be exerted pressure (comprising reacting force) to concrete sample 11 equably.The reading of three pressure transducers 8 is and is applied to the axially pressure net load value of (directions X, Y direction and Z direction) of three on the concrete sample 11, does not have hydraulic loss.
Usually, the size of loading head 9 and concrete sample 11 surface of contact can be slightly less than the size of concrete sample 11; 11 employings are of a size of 100mm * 100mm * 100mm as concrete sample, and then loading head 9 can be chosen 95mm * 95mm with the size of concrete sample 11 surface of contact.
In addition, described each group pressure-loaded mechanism also comprises playing and connects and the rebound 6 of power transmission effect, is located at the oil cylinder 7 and between bearing frame of pressurizeing respectively.Rebound 6 is fixedlyed connected with bearing frame, and pressurization oil cylinder 7 is fixed on the rebound 6.
In addition, described each group pressure-loaded mechanism also comprises plays the backing plate 5 that connects and adjust the size effect, is located at respectively between pressure transducer 8 and bearing frame.Backing plate 5 is fixedlyed connected with bearing frame, and pressure transducer 8 is fixed on the backing plate 5.
Above-mentioned bearing frame comprises respectively: two loading plates 1 and two cocainine thick sticks 3 (can be two one group), and mutually by the formation rectangular frame that is threaded.
In described three groups of pressure-loaded mechanisms wherein two groups of load maintainers freely be positioned on worktable or the rack rail.The leading screw of another group load maintainer is a vertical direction, between the loading plate (can be the door frame of equipment) above leading screw is fixed on and the loading plate (can be the ground pedestal of equipment) of below.Be convenient to the installation and the positioning of test specimen like this, also make test specimen three end faces evenly stressed, avoid mechanical constraint to produce and force stress.The levelness (or verticality) of the bearing frame of each direction (load maintainer) is 0.02mm, can guarantee that centering is respond well.
Be that two groups of pressure-loaded mechanisms (directions X and Y direction) freely are positioned on worktable or the rack rail shown in this example, be provided with and another group pressure-loaded mechanism (Z direction) is vertical, between the loading plate 1 (can be the door frame of equipment) above the leading screw 3 of pressure-loaded mechanism is fixed on and the loading plate 1 (can be the ground pedestal of equipment) of below.
As shown in Figure 3:
Hydraulic control with a hydraulic jack is an example, and hydraulic control is made up of hydraulic power source, hydraulic jack, servo-valve, servo-valve driver, servo controller.The pressure oil of hydraulic cylinder is supplied with by hydraulic power source.Each hydraulic cylinder is connected with a force (forcing) pump of hydraulic power source.Pressure on each can be mediated according to the load transducer data presented, can realize desired pressure ratio like this.
As shown in Figure 3:
During described device work, X, Y, Z direction can load simultaneously in the ratio that is provided with, and exert pressure by 9 pairs of concrete samples 11 of loading head of three directions.(corresponding to stress direction is σ to directions X
3To) be pressurized; (corresponding to stress direction is σ to the Y direction
2To) be pressurized; (corresponding to stress direction is σ to the Z direction
1To) be pressurized;
Stress ratio σ
1: σ
2: σ
3For: not 0～1: 0～1: 0～1 (not comprising 0: 0: 0);
Exert pressure and to control by hydraulic control.
As seen, described device can be used to measure concrete sample 11 and be subjected to physical strength under the ratio pressure at three bearings, can directly measure the pressure useful load value that puts on the test specimen.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (5)
1. a concrete ratio loads the loading test device of three axial compressions, is used to measure concrete sample (11) and is subjected to physical strength under the ratio pressure at three bearings, it is characterized in that, comprising: three groups of pressure-loaded mechanisms and hydraulic control; Concrete sample (11) is positioned at the pressure-loaded mechanism center of three groups of axial mutually orthogonal layouts;
Described each group pressure-loaded mechanism comprises a cover bearing frame, pressurization oil cylinder (7), two loading heads (9) and a load pressure sensor (8);
Be provided with loading head (9) and pressure transducer (8) between an axial side of the quadrature of concrete sample (11) and this axial bearing frame from inside to outside; Be provided with loading head (9) and pressurization oil cylinder (7) between another side and this axial bearing frame from inside to outside;
Be provided with loading head (9) and pressure transducer (8) between the side that another of the quadrature of concrete sample (11) is axial and this axial bearing frame from inside to outside; Be provided with loading head (9) and pressurization oil cylinder (7) between another side and this axial bearing frame from inside to outside;
Be provided with loading head (9) and pressure transducer (8) between the 3rd an axial side of the quadrature of concrete sample (11) and this axial bearing frame from inside to outside; Be provided with loading head (9) and pressurization oil cylinder (7) between another side and this axial bearing frame from inside to outside;
Hydraulic control connects three pressurization oil cylinders (7) and applies ratio pressure to three oil cylinders.
2. concrete ratio according to claim 1 loads the loading test device of three axial compressions, it is characterized in that, described each group pressure-loaded mechanism also comprises rebound (6), is located at respectively between pressurization oil cylinder (7) and bearing frame.
3. concrete ratio according to claim 1 loads the loading test device of three axial compressions, it is characterized in that, described each group pressure-loaded mechanism also comprises backing plate (5), is located at respectively between pressure transducer (8) and bearing frame.
4. load the loading test device of three axial compressions according to claim 1,2 or 3 described concrete ratios, it is characterized in that described bearing frame comprises respectively: two loading plates (1) and two cocainine thick sticks (3), mutually by the formation rectangular frame that is threaded.
5. load the loading test device of three axial compressions according to claim 1,2 or 3 described concrete ratios, it is characterized in that, in described three groups of pressure-loaded mechanisms wherein two groups of load maintainers freely be positioned on worktable or the rack rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206325983U CN201852748U (en) | 2010-11-24 | 2010-11-24 | Loading tester for concrete proportion loading tri-axial pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206325983U CN201852748U (en) | 2010-11-24 | 2010-11-24 | Loading tester for concrete proportion loading tri-axial pressure |
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| CN201852748U true CN201852748U (en) | 2011-06-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401765A (en) * | 2011-11-24 | 2012-04-04 | 清华大学 | Lateral restraining device for load test of steel-structure compression member |
| CN106872277A (en) * | 2017-04-26 | 2017-06-20 | 上海核工程研究设计院 | A kind of loading device for SCS unit test specimen tensile compression tests |
| CN109357946A (en) * | 2018-10-19 | 2019-02-19 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Self-compacting concrete hydration test system |
| CN109406255A (en) * | 2018-10-11 | 2019-03-01 | 中国矿业大学 | A kind of fixture and bursting device of coated fabric membrane material burst testing |
| CN110514523A (en) * | 2019-08-29 | 2019-11-29 | 广东工业大学 | A kind of stress loading combination unit |
| WO2021056322A1 (en) * | 2019-09-24 | 2021-04-01 | 东北大学 | High-temperature and high-pressure hard rock true triaxial multifunctional shear test device and method |
-
2010
- 2010-11-24 CN CN2010206325983U patent/CN201852748U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401765A (en) * | 2011-11-24 | 2012-04-04 | 清华大学 | Lateral restraining device for load test of steel-structure compression member |
| CN102401765B (en) * | 2011-11-24 | 2013-05-22 | 清华大学 | Lateral restraining device for load test of steel-structure compression member |
| CN106872277A (en) * | 2017-04-26 | 2017-06-20 | 上海核工程研究设计院 | A kind of loading device for SCS unit test specimen tensile compression tests |
| CN109406255A (en) * | 2018-10-11 | 2019-03-01 | 中国矿业大学 | A kind of fixture and bursting device of coated fabric membrane material burst testing |
| CN109357946A (en) * | 2018-10-19 | 2019-02-19 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Self-compacting concrete hydration test system |
| CN109357946B (en) * | 2018-10-19 | 2021-06-11 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Self-compacting concrete hydration test system |
| CN110514523A (en) * | 2019-08-29 | 2019-11-29 | 广东工业大学 | A kind of stress loading combination unit |
| WO2021056322A1 (en) * | 2019-09-24 | 2021-04-01 | 东北大学 | High-temperature and high-pressure hard rock true triaxial multifunctional shear test device and method |
| US11326995B2 (en) | 2019-09-24 | 2022-05-10 | Northeastern University | Multi-functional true triaxial shear test device and method for hard rocks with high temperature and high pressure |
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| 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: 20110601 Termination date: 20131124 |