CN203772480U - Earth pressure box modulus calibration device - Google Patents
Earth pressure box modulus calibration device Download PDFInfo
- Publication number
- CN203772480U CN203772480U CN201420144031.XU CN201420144031U CN203772480U CN 203772480 U CN203772480 U CN 203772480U CN 201420144031 U CN201420144031 U CN 201420144031U CN 203772480 U CN203772480 U CN 203772480U
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- China
- Prior art keywords
- steel cylinder
- soil pressure
- transmission steel
- pressure cell
- pressure box
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Abstract
The utility model discloses an earth pressure box modulus calibration device. The structure of the earth pressure box modulus calibration device is characterized in that: a loading jack (9), a rigid platform (8), an earth pressure box (6), a rubber gasket plate (5) and a force transmission steel cylinder (3) are successively placed on a base (1a) of a rigid frame (1) from bottom to top; the working surface of the soil pressure box (6) is upward; one end of a force measuring ring (2) contacts with an upper end cover (3a) of the force transmission steel cylinder (3), and the other end is fixed on a crossbeam (1b) of the rigid frame (1) through a screw thread; a dial gauge (4) in the force transmission steel cylinder (3) is fixed on the rigid platform (8) through a dial gauge supporting frame (7) which penetrates out of the force transmission steel cylinder (3); and a probe (4a) of the dial gauge (4) penetrates through the through hole of a lower end cover (3b) of the force transmission steel cylinder (3) and the through hole of the rubber gasket plate (5) and then contacts with the working surface of the soil pressure box (6). The earth pressure box modulus calibration device has advantages of: simple and clear principle, simple operation, small calibrating result error, and accurate and reliable calibrating result.
Description
Technical field
The utility model relates to a kind of soil pressure cell caliberating device, belongs to soil test technique field.
Background technology
The basic skills of at present soil pressure measurement is to adopt soil pressure sensor to be embedded in directly to measure in works surface and soil native stress, and soil pressure cell remains the topmost sensor of stress in the contact of countries in the world research soil and engineering structure and native medium at present.As a kind of special sensor, soil pressure cell in most cases needs to imbed in native medium or direct and native medium contact, and the load action of responding to by soil pressure sensor obtains the soil pressure that soil stress or works bear.
Because soil pressure cell and native physico-mechanical properties can not be identical, soil pressure cell and native medium will interact and act on, the original stress field that changes medium, causes stresses re-distribution, causes the parameter of the force parameter that senses on sensor and original stress field variant.This error of bringing because of sensor and medium character difference is commonly referred to matching error, and its basic reason is the variation due to media environment, and the difference of sensor and medium, native medium discrete material particularly, and the adjustment of its stress and distortion is more complicated.Therefore, soil pressure cell generally will be demarcated before using, to obtain the running parameter of soil pressure cell in the situation similar to actual working environment.The modulus of soil pressure cell is one of key parameter of soil pressure cell.Traditional soil pressure cell scaling method does not all relate to the demarcation to soil pressure cell modulus, general is all the relation of reflection load and sensor output signal, the deformation characteristics of testing sensor etc., can be to the device that soil pressure cell modulus is demarcated and test method so needs are a kind of.
Utility model content
The purpose of this utility model is to provide a kind of soil pressure cell modulus caliberating device, and this caliberating device principle is simply clear and definite, easy to operation, with low cost, and efficiency is high, and calibration result error is little, and calibration result accurately, reliably.
The utility model is that the technical scheme that realizes its goal of the invention employing is: a kind of soil pressure cell modulus caliberating device, is characterized in that: on the base of rigid frame, place successively and load lifting jack, rigid platfor, soil pressure cell, rubber mat plate, power transmission steel cylinder from bottom to up; The workplace of described soil pressure cell upwards; Measure one's own ability ring one end contact with the upper end cover of power transmission steel cylinder, other end screw thread is fixed on the crossbeam of rigid frame; Clock gauge in power transmission steel cylinder is fixed on rigid platfor by passing the clock gauge bracing frame of power transmission steel cylinder, and the probe of clock gauge contacts with the workplace of soil pressure cell after through the through hole of bottom end cover of power transmission steel cylinder and the through hole of rubber mat plate.
The course of work of the present utility model and principle are:
Timing signal, by the loading jack pair rigid platfor on rigid frame base, apply jacking force, this load is from the bottom to top along rigid platfor, soil pressure cell, rubber mat plate, power transmission steel cylinder, the ring of measuring one's own ability, be passed to rigid frame crossbeam, the reading of the ring of measuring one's own ability is the vertical payload values that soil pressure cell bears.Meanwhile, be arranged on vertical (axially) distortion that probe that the clock gauge on rigid platfor contacts with soil pressure cell workplace by it is measured soil pressure cell.According to the size of soil pressure cell (diameter and thickness), calculate the stress and strain of soil pressure cell.According to the stress strain curve of soil pressure cell under different load actions, then calculate soil pressure cell modulus by Hooke's law, the modulus that can complete soil pressure cell is demarcated.
Compared with prior art, the beneficial effects of the utility model are:
One, by rigid frame base, load lifting jack, rigid platfor, soil pressure cell, rubber mat plate, power transmission steel cylinder, measure one's own ability ring and rigid frame crossbeam form xial feed loading structure, and by measuring one's own ability wherein, encircle Accurate Measurement and go out payload values and obtain being applied to the load on soil pressure cell; The probe being contacted with soil pressure cell workplace by it by the clock gauge being arranged on rigid platfor is measured the axial deformation of soil pressure cell simultaneously, and then calculates the modulus of soil pressure cell, realizes the modulus of soil pressure cell and demarcates.Its principle is simply clear and definite, simple to operate.
Two, the bottom end cover of power transmission steel cylinder can guarantee that load is evenly delivered on soil pressure cell workplace, and the setting of rubber mat plate has avoided power transmission steel cylinder directly to contact with soil pressure cell workplace, makes like this in the process of load transmission and effect more even.Guarantee the load test of soil pressure cell more accurately, reliably.The probe of clock gauge contacts with the workplace of soil pressure cell after through the through hole of bottom end cover of power transmission steel cylinder and the through hole of rubber mat plate, can guarantee that clock gauge probe directly contacts with the workplace of soil pressure cell, more accurate to the test of soil pressure cell.Make calibrated error of the present utility model little, precision is high, and test findings more accurately, reliably.
On above-mentioned power transmission steel cylinder wall, have for observing the window of clock gauge reading.
Like this, observation and the record of more convenient soil pressure cell deformation test data.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation:
Fig. 1 is the front front view that the utility model is implemented legend.
Embodiment:
Fig. 1 illustrates, a kind of embodiment of the present utility model, a soil pressure cell modulus caliberating device, its composition is: on the base 1a of rigid frame 1, place successively and load lifting jack 9, rigid platfor 8, soil pressure cell 6, rubber mat plate 5, power transmission steel cylinder 3 from bottom to up; The workplace of described soil pressure cell 6 upwards; Ring 2 the one end of measuring one's own ability contacts with the upper end cover 3a of power transmission steel cylinder 3, and other end screw thread is fixed on the crossbeam 1b of rigid frame 1; Clock gauge 4 in power transmission steel cylinder 3 is fixed on rigid platfor 8 by passing the clock gauge bracing frame 7 of power transmission steel cylinder 3, and the probe 4a of clock gauge 4 contacts with the workplace of soil pressure cell 6 after through the through hole of bottom end cover 3b of power transmission steel cylinder 3 and the through hole of rubber mat plate 5.
On these routine power transmission steel cylinder 3 walls, have for observing the window 3c of clock gauge 4 readings.
Claims (2)
1. a soil pressure cell modulus caliberating device, is characterized in that: on the base (1a) of rigid frame (1), place successively and load lifting jack (9), rigid platfor (8), soil pressure cell (6), rubber mat plate (5), power transmission steel cylinder (3) from bottom to up; The workplace of described soil pressure cell (6) upwards; Measure one's own ability one end of ring (2) and the upper end cover (3a) of power transmission steel cylinder (3) contacts, and other end screw thread is fixed on the crossbeam (1b) of rigid frame (1); To be fixed on rigid platfor (8) upper by passing the clock gauge bracing frame (7) of power transmission steel cylinder (3) for clock gauge (4) in power transmission steel cylinder (3), and the probe (4a) of clock gauge (4) contacts with the workplace of soil pressure cell (6) after through the through hole of bottom end cover (3b) of power transmission steel cylinder (3) and the through hole of rubber mat plate (5).
2. a kind of soil pressure cell modulus caliberating device according to claim 1, is characterized in that: on described power transmission steel cylinder (3) wall, have for observing the window (3c) of clock gauge (4) reading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144031.XU CN203772480U (en) | 2014-03-27 | 2014-03-27 | Earth pressure box modulus calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144031.XU CN203772480U (en) | 2014-03-27 | 2014-03-27 | Earth pressure box modulus calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203772480U true CN203772480U (en) | 2014-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420144031.XU Expired - Fee Related CN203772480U (en) | 2014-03-27 | 2014-03-27 | Earth pressure box modulus calibration device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203772480U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848988A (en) * | 2015-05-14 | 2015-08-19 | 浙江大学 | Simple calibration apparatus of embedded earth pressure box in sandy soil medium |
| CN104929162A (en) * | 2015-06-15 | 2015-09-23 | 上海交通大学 | Outer side wall earth pressure cell hydraulic type burying device and method |
| CN106197780A (en) * | 2016-08-05 | 2016-12-07 | 浙江工业大学 | Novel resistor strain-type soil pressure cell sensor |
| CN106644255A (en) * | 2016-11-16 | 2017-05-10 | 河海大学 | Closed hydraulic type earth pressure cell calibration device and calibration method |
| CN107328522A (en) * | 2017-08-09 | 2017-11-07 | 武汉科技大学 | A kind of soil pressure cell caliberating device and its application method |
| CN110016904A (en) * | 2019-05-29 | 2019-07-16 | 成都理工大学 | A kind of fixed device of protection for Rock And Soil pressure test pressure cell |
| CN111189657A (en) * | 2020-01-13 | 2020-05-22 | 安徽工业大学 | Method for correcting hydraulic jack by using axial compression steel pipe |
| CN114018473A (en) * | 2021-11-16 | 2022-02-08 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Soil pressure sensor calibrating device |
-
2014
- 2014-03-27 CN CN201420144031.XU patent/CN203772480U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848988B (en) * | 2015-05-14 | 2017-05-24 | 浙江大学 | Simple calibration apparatus of embedded earth pressure box in sandy soil medium |
| CN104848988A (en) * | 2015-05-14 | 2015-08-19 | 浙江大学 | Simple calibration apparatus of embedded earth pressure box in sandy soil medium |
| CN104929162A (en) * | 2015-06-15 | 2015-09-23 | 上海交通大学 | Outer side wall earth pressure cell hydraulic type burying device and method |
| CN106197780A (en) * | 2016-08-05 | 2016-12-07 | 浙江工业大学 | Novel resistor strain-type soil pressure cell sensor |
| CN106644255B (en) * | 2016-11-16 | 2018-11-30 | 河海大学 | A kind of closing hydraulic type soil pressure cell caliberating device and scaling method |
| CN106644255A (en) * | 2016-11-16 | 2017-05-10 | 河海大学 | Closed hydraulic type earth pressure cell calibration device and calibration method |
| CN107328522A (en) * | 2017-08-09 | 2017-11-07 | 武汉科技大学 | A kind of soil pressure cell caliberating device and its application method |
| CN107328522B (en) * | 2017-08-09 | 2019-06-25 | 武汉科技大学 | A kind of soil pressure cell caliberating device and its application method |
| CN110016904A (en) * | 2019-05-29 | 2019-07-16 | 成都理工大学 | A kind of fixed device of protection for Rock And Soil pressure test pressure cell |
| CN110016904B (en) * | 2019-05-29 | 2023-11-28 | 成都理工大学 | Protection fixing device for rock-soil body pressure test pressure box |
| CN111189657A (en) * | 2020-01-13 | 2020-05-22 | 安徽工业大学 | Method for correcting hydraulic jack by using axial compression steel pipe |
| CN111189657B (en) * | 2020-01-13 | 2021-06-15 | 安徽工业大学 | Method for correcting hydraulic jack by using axial compression steel pipe |
| CN114018473A (en) * | 2021-11-16 | 2022-02-08 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Soil pressure sensor calibrating device |
| CN114018473B (en) * | 2021-11-16 | 2023-10-24 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Soil pressure sensor calibrating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140813 Termination date: 20170327 |