CN1908619A - Deformation modulus E testing instrument and method thereof - Google Patents
Deformation modulus E testing instrument and method thereof Download PDFInfo
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- CN1908619A CN1908619A CN 200610089186 CN200610089186A CN1908619A CN 1908619 A CN1908619 A CN 1908619A CN 200610089186 CN200610089186 CN 200610089186 CN 200610089186 A CN200610089186 A CN 200610089186A CN 1908619 A CN1908619 A CN 1908619A
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- loading plate
- gage beam
- deformation modulus
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Abstract
The deformation-modulus EV2 tester comprises: a loading device connected with a carrying device, an electronic detector connected with force sensor in last device, and the drop-off measurement device. This invention obtains result with large discrete, and has high measurement precision.
Description
Technical field
The invention belongs to the checkout equipment field, specially refer to a kind of equipment deformation modulus E that the subgrade construction quality is used that detects
V2Tester and method of testing.
Background technology
In " the railway bed design specifications " and " railway bed job specifications " that China is existing, it is foundation coefficient K that the intensity index of roadbed compaction quality is detected what adopt
30Value, it is to pass through K
30Tester comes reading numerical values.Though foundation coefficient K
30Value also is the parameter of reflection subgrade soils intensity and deformation relationship, but K
30Load-the subsidence curve of test once loads and draws, its sedimentation (distortion) has comprised the elastic deformation and the plastic yield of filler, these can only illustrate the deformation relationship that roadbed takes place, the actual strength that can not reflect roadbed filling really, therefore, it is comprehensive inadequately and perfect only adopting the detection of foundation coefficient in the prior art.
K
30Tester is to measure the loading plate center sedimentation by three displacement dial gauges that are installed on the datum line beam, installs very inconvenient.K
30Three displacement dial gauges of tester are mounted in the below of counterforce device (street roller or loading automobile), and the time of test long (every survey a bit needs 45 minutes approximately), so testing crew is all difficult especially when reading every point data, personnel labor intensity is bigger, and the data that obtained are not accurately yet, because K
30What tester measurement load read is the oil pressure gauge reading, has the error of oil hydraulic system, and not only reading is not directly perceived, and the load measurement error is also bigger.In the case, just propose to research and develop a kind of needs of new technical scheme, utilized deformation modulus E
V2Tester carries out comprehensive and accurate detection to the intensity index of roadbed compaction quality, rather than by foundation coefficient K
30Value is by deformation modulus E
V2Measurement can reflect roadbed filling intensity more truely and accurately, this also is the aim that the applicant researches and develops this project.
Summary of the invention
The technical issues that need to address of the present invention are, in the prior art to K
30The actual strength of load-reflection roadbed filling that the sedimentation relation can not be complete that plate is measured, not only data are inaccurate, and exist the testing crew reading difficult especially, shortcomings such as labour intensity is big, in order to overcome these shortcomings, just need develop again a kind of accurately, checkout equipment and detection method easily, the purpose of this invention is to provide a kind of deformation modulus E
V2Tester and method of testing, this deformation modulus E
V2Load-the subsidence curve of test is to load back, unloading step by step, and secondary loads and draws again, can think that its sedimentation (distortion) eliminated the plastic yield of filler, and the test result discreteness is little, more can reflect the actual strength of roadbed filling, therefore than employing foundation coefficient K
30Science, more reasonable more, in order to realize the object of the invention, the technical scheme that is adopted is: a kind of deformation modulus E
V2Tester, it is characterized in that: this instrument comprises the charger of the application of force, the coupled bogey of accepting acting force, the electronics analyzer that is connected to force transducer in this device, and the settlement measuring device that connects by the loading plate in the bogey totally four parts.
The loading of the described application of force, bogey, it mainly is loaded into power on the loading plate at the place, lifting jack bottom surface that is provided with below it by hydraulic cylinder and extension rod by hydraulic hand-pump.
In the circuit that described electronics analyzer adopts, comprise signal processing circuit, data processing circuit, power sense circuit and LCD four parts, receive, handle the signal of resistance strain gauge force transducer and measurement indicating gauge respectively, and show test results.
Described settlement measuring device comprises and surveys bridge and measure indicating gauge, and surveying bridge can have different gage beams, and measuring indicating gauge can be displacement dial gauge or displacement transducer.
Deformation modulus E
V2Tester is applicable to that measuring particle diameter is not more than all kinds of soil of loading plate diameter 1/4 and the deformation modulus E of native stone mixed fillers
V2Value.By measuring the settling amount at loading plate stress and loading plate center, calculate deformation modulus E
V2Numerical value.
The method of testing of described deformation modulus Ev2 tester is as follows: when the gage beam of surveying bridge in the described tester adopts the lever gage beam, the gage beam contact is placed on the loading plate center, utilize lever principle by being installed in a measurement dial gauge reading of gage beam one end, calculate the settling amount at loading plate center; When described tester is surveyed gage beam in the bridge and is adopted vertical drawing and pulling type gage beam, designed a vertical slideway at gage beam one end, the settling amount at loading plate center is equated with measurement dial gauge reading on being installed in the slideway slide bar, thereby draw the settling amount at loading plate center.
Beneficial effect of the present invention can be summarized four aspects:
1. deformation modulus E
V2Test is loading back, unloading step by step, and secondary loads and draws again, can think that its sedimentation that records eliminated the plastic yield of filler, and the test result discreteness is little, more can reflect the actual strength of roadbed filling.Special line for passenger trains has adopted deformation modulus E in the subgrade construction quality control
V2Index, deformation modulus E
V2The development of tester is for guaranteeing that Line for Passenger Transportation subgrade construction quality plays an important role.
2. compare K
30Settling amount three point measurements of planar loading instrument, deformation modulus E
V2Tester adopts center spot measurement settling amount, utilize lever principle to calculate the settling amount at loading plate center by a measurement dial gauge reading that is installed in the gage beam other end, make like this and measure indicating gauge, greatly reduce the labour intensity of testing crew away from counterforce device.
3. having designed a vertical slideway at gage beam one end makes the settling amount at loading plate center equate with measurement dial gauge reading on being installed in slide bar.Thereby draw loading plate center sedimentation amount by the reading of measuring indicating gauge.
4. deformation modulus E
V2Electronics analyzer in the tester adopts signal processing circuit, data processing equipment, power sense circuit, liquid crystal (LCD) display etc., receives, handles the signal of resistance strain gauge force transducer and measurement indicating gauge, and show test results.This measurement device has advantages such as volume is little, dynamic response is fast, measuring accuracy is high, easy to use.
5. the electronics analyzer is gathered, stores, is read the survey data, can be by external mini-printer printing test data and curve, and test data can be transferred to computer for further processing.
Description of drawings
Fig. 1 is deformation modulus E of the present invention
V2The tester overall schematic;
Loading, bogey figure in the described tester of Fig. 2;
Fig. 3 is an electronics analyzer profile synoptic diagram;
Fig. 4 a is for surveying Biodge device 1 synoptic diagram;
Fig. 4 b is for surveying Biodge device 2 synoptic diagram.
Embodiment
With reference to Fig. 1, Fig. 2, represent deformation modulus E of the present invention
V2Tester overall schematic and loading, bogey figure, loading, bogey 1 comprise 4 parts among the figure, they are hydraulic hand-pumps 1.1, it is loaded into power by hydraulic cylinder 1.2 and extension rod 1.3 loading plate 1.4 at place, lifting jack bottom surface, this loading, bogey connect electronics analyzer 2 through force transducer 1.5, and the device top is provided with regulates pressure head 1.6.
With reference to Fig. 3, expression electronics analyzer profile synoptic diagram, this device 2 contains casing 2.1, contains switching knob 2.2 on the front panel, and LCD display 2.3 contains IO interface 2.4 and charger socket 2.5, printer interface 2.6 on the side panel.
With reference to Fig. 4 a, 4b, represent that two kinds are surveyed bridge construction, surveying bridge is the critical piece of settlement measuring device 3, comprise L shaped survey bridge rod member 3.1 and gage beam 3.2, the middle part is provided with supporting seat 3.3, crossbeam 3.4, the leading portion of gage beam is for measuring crane span structure 3.5, and their used measurement index tables 3.6 are equipped with in the end of gage beam.
Deformation modulus E
V2When tester adopts the lever gage beam, the contact of gage beam is placed on the center of loading plate, utilizes lever principle to measure dial gauge reading, calculate the settling amount at loading plate center by being installed in of the gage beam other end.
Deformation modulus E
V2When tester adopts vertical drawing and pulling type gage beam, designed a vertical slideway, the settling amount at loading plate center is equated with measurement dial gauge reading on being installed in slide bar at gage beam one end.Thereby draw loading plate center sedimentation amount by the reading of measuring indicating gauge.
Described measurement indicating gauge is displacement dial gauge or displacement transducer, reflects the settling amount at loading plate center in the measuring process in real time.
Claims (5)
1. deformation modulus E
V2Tester, it is characterized in that: this instrument comprises the charger of the application of force, the coupled bogey of accepting acting force, the electronics analyzer that is connected to force transducer in this device, and the settlement measuring device that connects by the loading plate in the bogey totally four parts.
2. deformation modulus E according to claim 1
V2Tester is characterized in that: the loading of the described application of force, bogey, it mainly is loaded into power on the loading plate at the place, lifting jack bottom surface that is provided with below it by hydraulic cylinder and extension rod by hydraulic hand-pump.
3. deformation modulus E according to claim 1
V2Tester, it is characterized in that: in the circuit that described electronics analyzer adopts, comprise signal processing circuit, data processing circuit, power sense circuit and LCD four parts, receive, handle the signal of resistance strain gauge force transducer and measurement indicating gauge respectively, and show test results.
4. deformation modulus E according to claim 1
V2Tester is characterized in that: described settlement measuring device, and comprise and survey bridge and measure indicating gauge, surveying bridge can have different gage beams, and measuring indicating gauge can be displacement dial gauge or displacement transducer.
5. deformation modulus E according to claim 1
V2The method of testing of tester, it is characterized in that: when surveying the gage beam employing lever gage beam of bridge in the described tester, the gage beam contact is placed on the loading plate center, utilizes lever principle, calculate the settling amount at loading plate center by being installed in a measurement dial gauge reading of gage beam one end; When described tester is surveyed gage beam in the bridge and is adopted vertical drawing and pulling type gage beam, designed a vertical slideway at gage beam one end, the settling amount at loading plate center is equated with measurement dial gauge reading on being installed in the slideway slide bar, thereby draw the settling amount at loading plate center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610089186 CN1908619A (en) | 2006-08-08 | 2006-08-08 | Deformation modulus E testing instrument and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610089186 CN1908619A (en) | 2006-08-08 | 2006-08-08 | Deformation modulus E testing instrument and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1908619A true CN1908619A (en) | 2007-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610089186 Pending CN1908619A (en) | 2006-08-08 | 2006-08-08 | Deformation modulus E testing instrument and method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1908619A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907605A (en) * | 2010-06-22 | 2010-12-08 | 昆明理工大学 | Method for detecting fatigue damage degree of self-piercing riveting joint for metal plate through dynamic response |
| CN103469831A (en) * | 2013-09-09 | 2013-12-25 | 长沙学院 | Pre-strain rib total deformation measuring method in pre-strain reinforcement test |
| CN105544624A (en) * | 2016-02-23 | 2016-05-04 | 周霜林 | Static load test device for asymmetric counter weight |
-
2006
- 2006-08-08 CN CN 200610089186 patent/CN1908619A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907605A (en) * | 2010-06-22 | 2010-12-08 | 昆明理工大学 | Method for detecting fatigue damage degree of self-piercing riveting joint for metal plate through dynamic response |
| CN103469831A (en) * | 2013-09-09 | 2013-12-25 | 长沙学院 | Pre-strain rib total deformation measuring method in pre-strain reinforcement test |
| CN103469831B (en) * | 2013-09-09 | 2015-06-17 | 长沙学院 | Pre-strain rib total deformation measuring method in pre-strain reinforcement test |
| CN105544624A (en) * | 2016-02-23 | 2016-05-04 | 周霜林 | Static load test device for asymmetric counter weight |
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Owner name: CHINA RAILWAY SURVEY AND DESIGN INSTITUTE OF THE Free format text: FORMER OWNER: RAILWAY NO.5 SURVEY AND DESIGN INST. Effective date: 20080201 |
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Effective date of registration: 20080201 Address after: Zip code 9, Kang Chong Road, Beijing, Daxing District: 102600 Applicant after: China Railway Fifth Survey and Design Institute Group Ltd. Address before: Zip code 9, Kang Chong Road, Beijing, Daxing District: 102600 Applicant before: The Fifth Railway Survey & Design Institute |
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