CN103471919A - Portable one-dimensional stress relaxation testing device and testing method thereof - Google Patents
Portable one-dimensional stress relaxation testing device and testing method thereof Download PDFInfo
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- CN103471919A CN103471919A CN2013104291497A CN201310429149A CN103471919A CN 103471919 A CN103471919 A CN 103471919A CN 2013104291497 A CN2013104291497 A CN 2013104291497A CN 201310429149 A CN201310429149 A CN 201310429149A CN 103471919 A CN103471919 A CN 103471919A
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Abstract
The invention discloses a portable one-dimensional stress relaxation testing device and a testing method thereof. The device comprises a base, wherein the base is provided with a jacking motor; the jacking motor is provided with a solidification container; two vertical rods are mounted on the two sides of the base; after the two vertical rods are fixedly arranged on the two sides of the base, a counter-force beam is mounted at the tops of the two vertical rods; a counter-force framework is commonly composed of the counter-force beam and the two vertical rods; a vertical rod is erected in the middle of the counter-force beam and is connected with a force transmission cover plate on the upper part of the solidification container. With the adoption of the portable one-dimensional stress relaxation testing device and the testing method thereof, a one-dimensional stress relaxation test can be directly carried out on undisturbed soil on the spot; meanwhile, the testing method is simple, the operability is strong; not only can testing cost and time be saved and testing efficiency be improved, but also data obtained by the test is accurate and reliable.
Description
Technical field
The present invention relates to a kind of portable determinator in soil test in Geotechnical Engineering, particularly relate to a kind of portable one-dimensional stress relaxation test device and test method thereof.
Background technology
Underground weak soil basis has stronger rheological, and as creep, stress relaxation etc., these features will directly have influence on the stability that is built in buildings on soft soil foundation.At present scholars have carried out a series of experimental study for the rheological characteristics of weak soil, wherein stress relaxation test comparatively simple, save time.More common stress relaxation test has: the draining under the stress relaxation test under one-dimensional condition, three axle conditions and the stress relaxation test under not draining stress relaxation test and complex stress etc.Current above-mentioned stress relaxation test is all to carry out on conventional consolidation container or compression set, and owing to operating in laboratory, its limitation is larger, can't directly carry out stress relaxation test to on-the-spot undisturbed soil sample.
Summary of the invention
The deficiency existed for overcoming above-mentioned prior art, the present invention's purpose is to provide a kind of portable one-dimensional stress relaxation test device and test method thereof, it can directly carry out the one-dimensional stress relaxation test to undisturbed soil at the scene, test method is simple simultaneously, workable, not only can save experimentation cost and time cost, improve test efficiency, and the test the data obtained accurately and reliably.
For reaching above-mentioned and other purpose, the present invention proposes a kind of portable one-dimensional stress relaxation test device, this device comprises a base, one jacking motor is installed on this base, on this jacking motor, consolidation container is installed, these base both sides are equipped with two montants, fix these two montants and at these two montant tops, a reaction beam is installed in these base two rear flank, this reaction beam and this two montants form reaction frame jointly, set up a montant in the middle of this reaction beam and are connected with the power transmission cover plate on this consolidation container top.
Further, place sample in this consolidation container, this jacking motor applies vertical displacement to carry out constant strain speed compression test can to this sample.
Further, these base both sides are equipped with two threaded rods, set up a rigid thread bar in the middle of this reaction beam and are connected with the power transmission cover plate on this consolidation container top.
Further, this rigid thread bridge is established a pressure transducer, to put on the pressure of sample in the monitoring test process.
Further, a displacement transducer is installed, with the displacement of sample in the monitoring test process on the power transmission cover plate at this consolidation container top.
Further, this consolidation container comprises cutting ring, retaining ring, porous disc, tank and power transmission cover plate, and this power transmission cover plate is connected with this rigid thread bar.
For reaching above-mentioned and other purpose, the present invention also provides a kind of test method of portable one-dimensional stress relaxation test device, comprises the steps:
Step 1, preparation and installation sample place sample, and install pressure transducer and displacement transducer in consolidation container;
Step 2, apply vertical displacement by the jacking motor to sample and carry out constant strain speed compression test;
Step 3, place permeable stone, filter paper from top to bottom successively, sample, filter paper, permeable stone, pressurization power transmission cover plate, and install pressure transducer and displacement transducer;
Step 4, arrange the stress relaxation curve that experimental data obtains the soil body.
Further, in step 1, place successively from top to bottom permeable stone, filter paper in this consolidation container, sample, filter paper, permeable stone, pressurization power transmission cover plate, then install pressure transducer and displacement transducer.
Further, in step 2, by this jacking motor, to sample, apply vertical displacement to particular value, disable motor power is with the distortion of fixation test, and then soil sample enters the stress relaxation stage, by stress measurement device, records stress over time.
Further, this step 2 duration is at least 24 hours.
Compared with prior art, a kind of portable one-dimensional stress relaxation test device of the present invention and test method thereof, by utilizing the jacking motor to apply vertical displacement to sample, carry out constant strain speed compression test, realized at the scene undisturbed soil directly being carried out to the purpose of one-dimensional stress relaxation test, apparatus of the present invention are easy to make simultaneously, be easy to carry, test method is simple, workable, not only can save experimentation cost and time cost, improve test efficiency, and the test the data obtained accurately and reliably.
The accompanying drawing explanation
The structural representation that Fig. 1 is a kind of portable one-dimensional stress relaxation test device of the present invention;
The flow chart of steps of the test method that Fig. 2 is a kind of portable one-dimensional stress relaxation test device of the present invention.
Embodiment
Below, by specific instantiation accompanying drawings embodiments of the present invention, those skilled in the art can understand other advantage of the present invention and effect easily by content disclosed in the present specification.The present invention also can be different by other instantiation implemented or applied, the every details in this instructions also can be based on different viewpoints and application, carries out various modifications and change not deviating under spirit of the present invention.
The structural representation that Fig. 1 is a kind of portable one-dimensional stress relaxation test device of the present invention.As shown in Figure 1, a kind of portable one-dimensional stress relaxation test device of the present invention, comprise base (1), one jacking motor (2) is installed on base, the upper consolidation container (7) of installing of jacking motor (2), place sample in consolidation container (7), jacking motor (2) can apply displacement to sample and carry out constant strain speed compression test.
In base (1) both sides, two montants (3) are installed, in preferred embodiment of the present invention, montant (3) is threaded rod, the present invention is not as limit, fixedly montant (3) is installed a reaction beam (4) in the top at montant (3) in base (1) two rear flank, reaction beam (4) forms reaction frame jointly with two montants (3), set up a rigidity montant (5) in the middle of reaction beam (4), in preferred embodiment of the present invention, rigidity montant (5) is the rigid thread bar, and the rigid thread bar is connected with the power transmission cover plate (8) on consolidation container top.
In preferred embodiment of the present invention, consolidation container (7) is comprised of cutting ring (9), retaining ring (10), porous disc (11), tank (12), power transmission cover plate (8).Power transmission cover plate (8) is connected with rigid thread bar (5), and rigid thread bar (5) is equipped with pressure transducer (13), is used in the experiments of measuring process putting on the stress of sample.Displacement transducer (14) is arranged on power transmission cover plate (8) to the displacement that is used for measuring sample in process of the test simultaneously.
The flow chart of steps of the test method that Fig. 2 is a kind of portable one-dimensional stress relaxation test device of the present invention.As shown in Figure 2, the test method of a kind of portable one-dimensional stress relaxation test device of the present invention, comprise the steps:
Step 201, preparation and installation sample are placed successively from top to bottom permeable stone, filter paper in consolidation container, and sample, filter paper, permeable stone, pressurization power transmission cover plate, then install pressure transducer and displacement transducer;
Step 202, apply vertical displacement by the jacking motor to sample and carry out constant strain speed compression test.Particularly, by the jacking motor, to sample, apply vertical displacement to particular value, disable motor power is with the distortion of fixation test, and then soil sample enters the stress relaxation stage, by stress measurement device, records stress over time, and the duration is 24h.
Step 203, arrange the stress relaxation curve that experimental data obtains the soil body.
In sum, a kind of portable one-dimensional stress relaxation test device of the present invention and test method thereof, apply vertical displacement by utilizing the jacking motor to sample, carries out constant strain speed compression test, realized at the scene undisturbed soil directly being carried out to the purpose of one-dimensional stress relaxation test, apparatus of the present invention are easy to make simultaneously, are easy to carry, and test method is simple, workable, not only can save experimentation cost and time cost, improve test efficiency, and the test the data obtained accurately and reliably.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any those skilled in the art all can, under spirit of the present invention and category, modify and change above-described embodiment.Therefore, the scope of the present invention, should be as listed as claims.
Claims (10)
1. a portable one-dimensional stress relaxation test device, it is characterized in that: this device comprises a base, one jacking motor is installed on this base, on this jacking motor, consolidation container is installed, these base both sides are equipped with two montants, fix these two montants and at these two montant tops, a reaction beam is installed in these base two rear flank, this reaction beam and this two montants form reaction frame jointly, set up a montant in the middle of this reaction beam and are connected with the power transmission cover plate on this consolidation container top.
2. a kind of portable one-dimensional stress relaxation test device as claimed in claim 1 is characterized in that: place sample in this consolidation container, this jacking motor apply vertical displacement to carry out constant strain speed compression test can to this sample.
3. a kind of portable one-dimensional stress relaxation test device as claimed in claim 2, it is characterized in that: these base both sides are equipped with two threaded rods, set up a rigid thread bar in the middle of this reaction beam and are connected with the power transmission cover plate on this consolidation container top.
4. a kind of portable one-dimensional stress relaxation test device as claimed in claim 3, it is characterized in that: this rigid thread bridge is established a pressure transducer, to put on the pressure of sample in the monitoring test process.
5. a kind of portable one-dimensional stress relaxation test device as claimed in claim 4, is characterized in that: a displacement transducer is installed, with the displacement of sample in the monitoring test process on the power transmission cover plate at this consolidation container top.
6. a kind of portable one-dimensional stress relaxation test device as claimed in claim 2, it is characterized in that: this consolidation container comprises cutting ring, retaining ring, porous disc, tank and power transmission cover plate, this power transmission cover plate is connected with this rigid thread bar.
7. the test method of a portable one-dimensional stress relaxation test device, comprise the steps:
Step 1, preparation and installation sample place sample, and install pressure transducer and displacement transducer in consolidation container;
Step 2, apply vertical displacement by the jacking motor to sample and carry out constant strain speed compression test;
Step 3, place permeable stone, filter paper from top to bottom successively, sample, filter paper, permeable stone, pressurization power transmission cover plate, and install pressure transducer and displacement transducer;
Step 4, arrange the stress relaxation curve that experimental data obtains the soil body.
8. the test method of a kind of portable one-dimensional stress relaxation test device as claimed in claim 7, it is characterized in that: in step 1, place successively from top to bottom permeable stone, filter paper in this consolidation container, sample, filter paper, permeable stone, pressurization power transmission cover plate, then install pressure transducer and displacement transducer.
9. the test method of a kind of portable one-dimensional stress relaxation test device as claimed in claim 7, it is characterized in that: in step 2, apply vertical displacement to particular value by this jacking motor to sample, disable motor power is with the distortion of fixation test, then soil sample enters the stress relaxation stage, by stress measurement device, records stress over time.
10. the test method of a kind of portable one-dimensional stress relaxation test device as claimed in claim 9, it is characterized in that: this step 2 duration is at least 24 hours.
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| CN2013104291497A CN103471919A (en) | 2013-09-18 | 2013-09-18 | Portable one-dimensional stress relaxation testing device and testing method thereof |
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| CN2013104291497A CN103471919A (en) | 2013-09-18 | 2013-09-18 | Portable one-dimensional stress relaxation testing device and testing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103712840A (en) * | 2014-01-01 | 2014-04-09 | 浙江省建设工程质量检验站有限公司 | Static shearing test sample making instrument and making method thereof |
| CN105716956A (en) * | 2016-01-28 | 2016-06-29 | 山东大学 | Creep test device and control system thereof |
| CN107422097A (en) * | 2017-05-23 | 2017-12-01 | 北京交通大学 | A kind of device for measuring soil solidifying performance and expansive force |
| CN108593893A (en) * | 2018-07-09 | 2018-09-28 | 中国地质调查局西安地质调查中心 | A kind of field quickly carries out the easy device of different water cut soil sample consolidation experiment |
| CN109827873A (en) * | 2019-02-28 | 2019-05-31 | 温州大学 | Consider the multi-functional soft soil rheological tester that temperature influences |
| CN109883869A (en) * | 2019-03-08 | 2019-06-14 | 温州大学 | Portable pollutant corrosive effect multifunction test instrument and one-dimensional consolidation and pollutant erosion test method |
| CN110082182A (en) * | 2019-05-14 | 2019-08-02 | 浙江大学城市学院 | The preparation facilities of clay sample and its measuring method of pore water type and content are saturated at a kind of different depth |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712840A (en) * | 2014-01-01 | 2014-04-09 | 浙江省建设工程质量检验站有限公司 | Static shearing test sample making instrument and making method thereof |
| CN103712840B (en) * | 2014-01-01 | 2015-09-30 | 浙江省建设工程质量检验站有限公司 | A kind of static pressure shears sample product instrument and product method thereof |
| CN105716956A (en) * | 2016-01-28 | 2016-06-29 | 山东大学 | Creep test device and control system thereof |
| CN107422097A (en) * | 2017-05-23 | 2017-12-01 | 北京交通大学 | A kind of device for measuring soil solidifying performance and expansive force |
| CN107422097B (en) * | 2017-05-23 | 2023-09-12 | 北京交通大学 | Device for measuring soil consolidation performance and expansion force |
| CN108593893A (en) * | 2018-07-09 | 2018-09-28 | 中国地质调查局西安地质调查中心 | A kind of field quickly carries out the easy device of different water cut soil sample consolidation experiment |
| CN109827873A (en) * | 2019-02-28 | 2019-05-31 | 温州大学 | Consider the multi-functional soft soil rheological tester that temperature influences |
| CN109883869A (en) * | 2019-03-08 | 2019-06-14 | 温州大学 | Portable pollutant corrosive effect multifunction test instrument and one-dimensional consolidation and pollutant erosion test method |
| CN110082182A (en) * | 2019-05-14 | 2019-08-02 | 浙江大学城市学院 | The preparation facilities of clay sample and its measuring method of pore water type and content are saturated at a kind of different depth |
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Application publication date: 20131225 |