CN202350749U - Measuring system for deformation characteristic of soil body - Google Patents
Measuring system for deformation characteristic of soil body Download PDFInfo
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- CN202350749U CN202350749U CN2011204331575U CN201120433157U CN202350749U CN 202350749 U CN202350749 U CN 202350749U CN 2011204331575 U CN2011204331575 U CN 2011204331575U CN 201120433157 U CN201120433157 U CN 201120433157U CN 202350749 U CN202350749 U CN 202350749U
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Abstract
The utility model discloses a measuring system for the deformation characteristic of a soil body, comprising a soil body model test box which is a box body with at least one transparent test surface, wherein a to-be-tested soil body model is placed in the box body, a plurality of measuring points are dispersedly arranged in the primitive soil of the soil body model, and each measuring point is adjacent to the inner side of the transparent test surface; any one measuring point comprises soil particles prepared by the primitive soil and paint films coated on the outer surfaces of the soil particles, and the colour difference between the paint film and the primitive soil is greater than or equal to a preset colour difference value. The measuring system further comprises photographing equipment, wherein a lens of the photographing equipment is located at a place with a preset distance right ahead any one transparent test surface of the soil body model test box; and a computer used for analysing the deformation characteristic of the soil body according to the images acquired by the photographing equipment, wherein the computer is connected with the photographing equipment via a data wire. The measuring system for the deformation characteristic of a soil body disclosed by the utility model improves the accuracy of measurement for the deformation characteristic of the soil body in the soil body model, and the convenience of observation and image acquisition.
Description
Technical field
The utility model relates to ground foundation engineering measuring equipment technology, relates in particular to a kind of measuring system of soil deformation characteristic.
Background technology
The electric power line pole tower basis mainly bear superstructure on pull out and the horizontal force load, on pull out the stability Design controlling factor of electric power line pole tower basic engineering often.The electric power line pole tower basic engineering is a benchmark to pull out the soil bearing capacity requirement on satisfying mainly, and therefore confirming to pull out on the basis bearing capacity is the matter of utmost importance that need solve in the tower bar basic engineering.
At present, for undisturbed soil digging foundation the most frequently used in the work transmission line, recommend to adopt " shearing method " to calculate in the DL/T 5219-2005 technical manual and pull out bearing capacity.The principle of " shearing method " is: suppose that foundation soil body last pulling out shear failure takes place under the load action, the calculating shear surface is an arc rotary surface, adopts the limiting equilibrium method to obtain and pulls out bearing capacity.For fine sand, coarse sand, hard plastic clay, pull out bearing capacity on adopting that " shearing method " recommended among the DL/T 5219-200 calculate and test findings is more identical.Yet along with the development of extra-high voltage engineering in recent years, increasing transmission line of electricity is wanted difficult grounds such as approach Gobi desert, swampland.Engineering result shows: for some special foundation; Like Gobi desert gravelly soil, silt clay, loess; The result and the test findings that adopt " shearing method " to calculate differ bigger, and its reason is that mainly above-mentioned foundation soil has not been an arc rotary surface at the last shear breakage that pulls out generation under the load action.Therefore, to pull out soil bearing capacity in order accurately calculating, to carry out accurately confirming to pulling out soil deformation characteristics such as soil deformation, destruction and the dynamic evolutionary process of shear surface in the above-mentioned foundation soil body, is accurately to calculate to pull out one of key factor of soil bearing capacity.
Conventional art about the soil deformation feature measurement is: comprise the mechanical type measuring technique of capacitive transducer measuring technique, this technology belongs to contact type measurement, and the soil body that directly contacts in the soil body model through the metering apparatus obtains the soil deformation characteristic.The shortcoming that this prior art exists mainly contains 2 points: the one, and the strong point and the measurement point of metering apparatus all will give enough spaces, make that like this layout quantity of measurement point is very limited; The 2nd, because the metering apparatus directly contacts soil body model and the metering apparatus is bigger to the deformation effect of the soil body that is in contact with it, make the soil deformation characteristic that measures exist than mistake.
In order to overcome the defective of above-mentioned conventional measurement techniques, prior art also provides a kind of optical profile type measuring technique.This technology adopts optical principle, through contactless optical photography, gathers the dynamic changing process that is laid in the measurement point in the landslide soil body model to be measured in real time, and photographs is carried out analyzing and processing, obtains deformation characteristics such as land movement such as sliding mass.But the proterties of primitive soil differs greatly in measurement point that this prior art is laid in landslide soil body model to be measured and the soil body model, makes measurement point relatively poor with the harmony of primitive soil dynamic deformation, thereby has reduced the accuracy of soil deformation feature measurement; In addition, visually difference is little for measurement point and original graph in this prior art, is not easy to observation and IMAQ.
The utility model content
The utility model provides a kind of measuring system of soil deformation characteristic, in order to the measurement accuracy of soil deformation characteristic and the convenience of observation and IMAQ in the raising soil body model.
The utility model provides a kind of measuring system of soil deformation characteristic, comprising:
Soil body model test case for having the casing of at least one transparent test surfaces, is placed with soil body model to be measured in the said casing, dispersed placement has a plurality of measurement points in the primitive soil of said soil body model, and each measurement point is adjacent with said transparent test surfaces inboard; Arbitrary said measurement point comprises: soil particle of processing by said primitive soil and the paint film that is coated on said soil particle outside surface, and the aberration of the color of said paint film and the color of said primitive soil is more than or equal to preset value of chromatism;
Picture pick-up device, the camera lens of said picture pick-up device are positioned at apart from the predeterminable range place in the dead ahead of the arbitrary said transparent test surfaces of said soil body model test case; And
Be used for carrying out according to the image of said picture pick-up device collection the computing machine of soil deformation specificity analysis, said computing machine is connected with said picture pick-up device through data line.
In order to improve the convenience of observation and IMAQ, optional, the aberration of the color of said paint film and the color of said primitive soil is more than or equal to 3.0; Said a plurality of measurement point array arrangement is in the primitive soil of said soil body model; The thickness of said paint film can be 0.5mm-2mm.
Optional, said measuring system also can comprise: tripod is arranged at the below of said picture pick-up device and supports said picture pick-up device through connecting rod member.Said tripod can comprise the adjusting parts that are used to carry out height and/or horizontal direction adjusting.
For collecting than distinct image information, the camera lens of said picture pick-up device is positioned at apart from the 1-2m place in the dead ahead of the said transparent test surfaces of said soil body model test case; The resolution of the camera lens of said picture pick-up device is more than or equal to 352 * 228 pixels.Said picture pick-up device can be: video camera, camera or camera.
The arbitrary transparent test surfaces of said soil body model test case is the clear glass test surfaces.For improving the rigidity and the intensity of test surfaces, said clear glass test surfaces can be the transparent toughened glass test surfaces.
The measuring system of the soil deformation characteristic that the utility model provides; Picture pick-up device can carry out IMAQ to the soil body dynamic deformation process of soil body model based on optical principle, by computing machine the image of picture pick-up device collection is analyzed to obtain the soil deformation characteristic in the model to be measured.The utility model is to adopt contactless IMAQ to obtain to carry out the required data of soil deformation specificity analysis; Relative traditional mechanical formula measuring technique; Reduced the shared space of the strong point of metering apparatus; The quantity and the scope that allow the measurement point of layout in the soil body model to be measured have been enlarged; And because the metering apparatus does not directly contact soil body model, therefore in the utility model measuring process, can not introduce of the interference of metering apparatus, thereby improve the measurement accuracy of soil deformation characteristic in the soil body model soil deformation in the soil body model.In addition; The utility model is for existing optical profile type measuring technique; Because primitive soil is processed in the soil particle of the measurement point employing soil body model; Therefore the proterties of measurement point is similar with the proterties of primitive soil in the soil body model, helps measurement point with the primitive soil compatible deformation, thereby helps improving the measurement accuracy of soil deformation characteristic; Further; The measurement point of the utility model is in the color of the paint film of the outside surface coating of soil particle; There is big aberration with the color of primitive soil, therefore is convenient to the dynamic changing process of measurement point is carried out IMAQ and identification, and then improved Measurement and analysis result's accuracy.
Description of drawings
The structural representation of the measuring system of the soil deformation characteristic that Fig. 1 provides for the utility model.
Reference numeral:
The 1-computing machine; 2-connects rod member; The 3-picture pick-up device;
4-regulates parts; The 5-tripod; The 6-measurement point;
The transparent test surfaces of 7-; 8-soil body model test case; 9-primitive soil.
Embodiment
The structural representation of the measuring system of the soil deformation characteristic that Fig. 1 provides for the utility model.Measuring system as shown in Figure 1 comprises: computing machine 1, picture pick-up device 3 and soil body model test case 8.
Soil body model test case 8 is for having the casing of at least one transparent test surfaces 7; Be placed with soil body model to be measured in the said casing; Dispersed placement has a plurality of measurement points 6 in the primitive soil of said soil body model, and each measurement point 6 is adjacent with said transparent test surfaces 7 inboards; Arbitrary said measurement point 6 comprises: soil particle of being processed by said primitive soil 9 and the paint film that is coated on said soil particle outside surface, the aberration of the color of the color of said paint film and said primitive soil 9 is more than or equal to preset value of chromatism.
Picture pick-up device 3 is used to carry out the soil body dynamic deformation process of soil body model and carries out IMAQ, and the camera lens of picture pick-up device 3 is positioned at apart from the predeterminable range place in the dead ahead of said soil body model test case 8 arbitrary said transparent test surfaces 7.
Computing machine 1 is connected with said picture pick-up device 3 through data line, is used for carrying out the soil deformation specificity analysis according to the image that said picture pick-up device 3 is gathered.
On the basis of technique scheme, optional, said a plurality of measurement point array arrangements are in the primitive soil of said soil body model.There is significant difference for value of chromatism greater than two kinds of colors of 3.0; Therefore; In order in soil body model, obviously to distinguish primitive soil 9 and measurement point 6; Can select to be coated in the outside surface of the soil particle of measurement point 6 greater than the lacquer of 3.0 color, form the paint film that has obvious difference with primitive soil with outside surface at soil particle with the aberration of the color of primitive soil 9.The thickness of said paint film can confirm according to actual needs that for example the thickness of said paint film is 0.5mm-2mm.
For ease of carrying out IMAQ, optional, above-mentioned measuring system also can comprise tripod 5; Tripod 5 is arranged at the below of picture pick-up device 3 and supports picture pick-up device 3 through connecting rod member 2.Also be provided with the adjusting parts 4 that are used to carry out height and/or horizontal adjustment on the tripod 5, to satisfy the angular adjustment requirement that picture pick-up device 3 carries out IMAQ.For collecting image than good quality; Picture pick-up device 3 can be selected the camera lens of resolution more than or equal to 352 * 228 pixels for use; The camera lens of picture pick-up device is positioned at apart from the appropriate distance such as the 1-2m place in the dead ahead of the said transparent test surfaces of said soil body model test case, so that the image resolution ratio that picture pick-up device 3 is taken satisfies preset requirement.Picture pick-up device 3 can be but is not limited to: video camera, camera or camera etc.
For the ease of gathering picture rich in detail, the material that it is good that transparent test surfaces can adopt light transmission is processed, and can adopt the clear glass test surfaces of the one-tenth of glass like the arbitrary transparent test surfaces 7 of soil body model test case 8.In order to improve the rigidity of clear glass test surfaces, clear glass is measured face and can be adopted the nonbreakable glass material to process, promptly transparent nonbreakable glass test surfaces.
The course of work of carrying out the measuring system of soil deformation characteristic in the face of the utility model down describes.
In practical application, if desired the soil body model of placing in the soil body model test case to be measured is carried out the soil deformation characteristic and measure, then put up measuring system according to mode shown in Figure 1.After measuring system is put up, can be in soil body models such as level land ground or slope ground, carry out the model foundation last pull out load, on pull out with the horizontal combination load action under the soil deformation failure test.In the soil deformation failure test, measurement point moves in company with the primitive soil in the soil body model together; Picture pick-up device is from the dynamic process of the transparent test surfaces shooting soil deformation of soil body model test case, like processes such as soil body crack initiation and crack propagation; Picture pick-up device is claimed the files in stream media like the MPEG4 form with the image of taking, and this files in stream media is sent to main frame through data line.This files in stream media real time record the whole deformation process of measurement point in the soil deformation failure test process, computing machine can obtain the soil deformation characteristic in the soil body model to be measured through the files in stream media information recorded is analyzed.
The optional analysis and processing method of soil deformation characteristic is for example: computing machine at first will import the digital imaging processing software system that computing machine move from the files in stream media that picture pick-up device receives; According to the files in stream media information recorded, confirm the soil deformation value at crucial moment afterwards.Soil deformation value for crucial moment; Can adopt following mode to obtain: the files in stream media of the media renderer plays picture pick-up device output of the MPEG4 files in stream media that selection can be play; The moment needing the distortion of data acquisition and calculation measurement point is extracted image; Utilize the digital imaging processing software system to carry out the sampling of above picture and the calculating of measurement point center continuously, just can obtain the continuous modification information at measurement point center; Cause the variation and the decohesion procedural image information at displacement vector angle through measurement point center continuous modification, can comprehensively confirm the shape facility of foundation soil body slip shear face.The digital imaging processing software system of computer run also can to camera acquisition to the variation track of each measurement point analyze; Can obtain to load level, the vertical displacement of each measurement point constantly, pull out the drop shadow curve of soil body space failure surface on test surfaces thereby can accurately depict.
To sum up analyze and to know; The measuring system of the soil deformation characteristic that the utility model provides; Picture pick-up device can carry out IMAQ to the soil body dynamic deformation process of soil body model based on optical principle, by computing machine the image of picture pick-up device collection is analyzed to obtain the soil deformation characteristic in the model to be measured.The utility model is to adopt contactless IMAQ to obtain to carry out the required data of soil deformation specificity analysis; Relative traditional mechanical formula measuring technique; Reduced the shared space of the strong point of metering apparatus; The quantity and the scope that allow the measurement point of layout in the soil body model to be measured have been enlarged; And because the metering apparatus does not directly contact soil body model, therefore in the utility model measuring process, can not introduce of the interference of metering apparatus, thereby improve the measurement accuracy of soil deformation characteristic in the soil body model soil deformation in the soil body model.
In addition; The utility model is for existing optical profile type measuring technique; Because primitive soil is processed in the soil particle of the measurement point employing soil body model; Therefore the proterties of measurement point is similar with the proterties of primitive soil in the soil body model, helps measurement point with the primitive soil compatible deformation, thereby helps improving the measurement accuracy of soil deformation characteristic; Further; The measurement point of the utility model is in the color of the paint film of the outside surface coating of soil particle; There is big aberration with the color of primitive soil, therefore is convenient to the dynamic changing process of measurement point is carried out IMAQ and identification, and then improved Measurement and analysis result's accuracy.
What should explain at last is: above embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.
Claims (10)
1. the measuring system of a soil deformation characteristic is characterized in that, comprising:
Soil body model test case for having the casing of at least one transparent test surfaces, is placed with soil body model to be measured in the said casing, dispersed placement has a plurality of measurement points in the primitive soil of said soil body model, and each measurement point is adjacent with said transparent test surfaces inboard; Arbitrary said measurement point comprises: soil particle of processing by said primitive soil and the paint film that is coated on said soil particle outside surface, and the aberration of the color of said paint film and the color of said primitive soil is more than or equal to preset value of chromatism;
Picture pick-up device, the camera lens of said picture pick-up device are positioned at apart from the predeterminable range place in the dead ahead of the arbitrary said transparent test surfaces of said soil body model test case; And
Be used for carrying out according to the image of said picture pick-up device collection the computing machine of soil deformation specificity analysis, said computing machine is connected with said picture pick-up device through data line.
2. measuring system according to claim 1 is characterized in that, said a plurality of measurement point array arrangements are in the primitive soil of said soil body model.
3. measuring system according to claim 1 and 2 is characterized in that, the thickness of said paint film is 0.5mm-2mm.
4. measuring system according to claim 1 and 2 is characterized in that, also comprises:
Tripod is arranged at the below of said picture pick-up device and supports said picture pick-up device through connecting rod member.
5. measuring system according to claim 4 is characterized in that, said tripod comprises the adjusting parts that are used to carry out height and/or horizontal direction adjusting.
6. measuring system according to claim 1 and 2 is characterized in that, the camera lens of said picture pick-up device is positioned at apart from the 1-2m place in the dead ahead of the said transparent test surfaces of said soil body model test case.
7. measuring system according to claim 1 and 2 is characterized in that, the camera lens of said picture pick-up device is: resolution is more than or equal to the camera lens of 352 * 228 pixels.
8. measuring system according to claim 1 and 2 is characterized in that, said picture pick-up device is: video camera, camera or camera.
9. measuring system according to claim 1 and 2 is characterized in that, the arbitrary transparent test surfaces of said soil body model test case is the clear glass test surfaces.
10. measuring system according to claim 9 is characterized in that, said clear glass test surfaces is the transparent toughened glass test surfaces.
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| CN2011204331575U CN202350749U (en) | 2011-11-04 | 2011-11-04 | Measuring system for deformation characteristic of soil body |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102866028A (en) * | 2012-09-06 | 2013-01-09 | 中国能源建设集团广东省电力设计研究院 | Cooling tower collapse analog experiment device |
| CN103162632A (en) * | 2013-03-26 | 2013-06-19 | 中国水利水电科学研究院 | Three-dimensional (3D) optical displacement measuring system for centrifugal model |
| CN104180766A (en) * | 2014-09-09 | 2014-12-03 | 南京林业大学 | Frozen soil interface layer deformation measuring system and measuring method thereof |
| CN104359789A (en) * | 2014-11-28 | 2015-02-18 | 长安大学 | Soil body shrinkage limit tester based on image analyzing method |
| CN105865365A (en) * | 2016-06-01 | 2016-08-17 | 南京大学 | Distributed optical fiber monitoring calibration and test method and device for soil deformation |
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| CN113433125A (en) * | 2021-06-21 | 2021-09-24 | 敦煌研究院 | Soil surface stress-strain test environment box for earthen archaeological site and measurement method thereof |
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2011
- 2011-11-04 CN CN2011204331575U patent/CN202350749U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102866028B (en) * | 2012-09-06 | 2015-11-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Cooling tower collapse analog experiment device |
| CN102866028A (en) * | 2012-09-06 | 2013-01-09 | 中国能源建设集团广东省电力设计研究院 | Cooling tower collapse analog experiment device |
| CN103162632A (en) * | 2013-03-26 | 2013-06-19 | 中国水利水电科学研究院 | Three-dimensional (3D) optical displacement measuring system for centrifugal model |
| CN103162632B (en) * | 2013-03-26 | 2015-04-08 | 中国水利水电科学研究院 | Three-dimensional (3D) optical displacement measuring system for centrifugal model |
| CN104180766A (en) * | 2014-09-09 | 2014-12-03 | 南京林业大学 | Frozen soil interface layer deformation measuring system and measuring method thereof |
| CN104359789A (en) * | 2014-11-28 | 2015-02-18 | 长安大学 | Soil body shrinkage limit tester based on image analyzing method |
| CN105953957A (en) * | 2016-04-29 | 2016-09-21 | 重庆大学 | Dodecahedral three-dimensional stress gage based on quantum dots |
| CN105953962A (en) * | 2016-04-29 | 2016-09-21 | 重庆大学 | Landslide thrust testing device based on quantum dot and manufacturing method thereof |
| CN105865365A (en) * | 2016-06-01 | 2016-08-17 | 南京大学 | Distributed optical fiber monitoring calibration and test method and device for soil deformation |
| CN105865365B (en) * | 2016-06-01 | 2018-04-17 | 南京大学 | Soil deformation distributed optical fiber sensing is demarcated and test method and its device |
| CN109974593A (en) * | 2019-04-01 | 2019-07-05 | 太原理工大学 | A kind of experimental rig and test method for simulating soil body cavity expansion |
| CN109974593B (en) * | 2019-04-01 | 2020-09-25 | 太原理工大学 | Testing device and testing method for simulating expansion of soil body column hole |
| CN113433125A (en) * | 2021-06-21 | 2021-09-24 | 敦煌研究院 | Soil surface stress-strain test environment box for earthen archaeological site and measurement method thereof |
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