Application of Digital Image Correlations (DIC) Technique on Geotechnical Reduced-Scale Model Tests
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This paper presents illustrative examples of the application of advanced digital image correlation (DIC) technology in the geotechnical laboratory tests, such as shallow footing test, trapdoor test, retaining wall test, and wide width tensile test on geogrid. The theoretical background of the DIC technique is first introduced together with fundamental equations. Relevant reduced-scale model tests were then performed using standard sand while applying the DIC technique to capture the movement of target materials during tests. A number of different approaches were tried to obtain optimized images that allow efficient tracking of material speckles based on the DIC technique. In order to increase the trackability of soil particles, a mix of dyed and regular sand was used during the model tests while specially devised painted speckles were applied to the geogrid. A series of images taken during tests were automatically processed and analyzed using software named VIC-2D that automatically generates displacements and strains. The soil deformation field and associated failure patterns obtained from the DIC technique for each test were found to compare fairly well with the theoretical ones. Also shown is that the DIC technique can also general strains appropriate to the wide width tensile test on geogrid, It is demonstrated in this study that the advanced DIC technique can be effectively used in monitoring the deformation and strain field during a reduced-scale geotechnical model laboratory test.
Abstract
This paper presents illustrative examples of the application of advanced digital image correlation (DIC) technology in the geotechnical laboratory tests, such as shallow footing test, trapdoor test, retaining wall test, and wide width tensile test on geogrid. The theoretical background of the DIC technique is first introduced together with fundamental equations. Relevant reduced-scale model tests were then performed using standard sand while applying the DIC technique to capture the movement of target materials during tests. A number of different approaches were tried to obtain optimized images that allow efficient tracking of material speckles based on the DIC technique. In order to increase the trackability of soil particles, a mix of dyed and regular sand was used during the model tests while specially devised painted speckles were applied to the geogrid. A series of images taken during tests were automatically processed and analyzed using software named VIC-2D that automatically generates displacements and strains. The soil deformation field and associated failure patterns obtained from the DIC technique for each test were found to compare fairly well with the theoretical ones. Also shown is that the DIC technique can also general strains appropriate to the wide width tensile test on geogrid, It is demonstrated in this study that the advanced DIC technique can be effectively used in monitoring the deformation and strain field during a reduced-scale geotechnical model laboratory test.
참고문헌 (35)
- Alikarami, R., "Strain localisation and grain breakage in sand under shearing at high mean stress:insights from in situ X-ray tomography", Acta Geotechnica, 10(1), pp.15~30 (2014)
- "ASTM Standard D2487-17, Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)", ASTM International, ~ (2017)
- "ASTM Standard D6637", D6637M-15, Standard Test Method for Determining Tensile Properties of Geogrids by the Single or Multi-Rib Tensile Method, 2015
- Blaber, J., "Ncorr: Open-Source 2D Digital Image Correlation Matlab Software", Experimental Mechanics, 55(6), pp.1105~1122 (2015)
- Bransby, P. L., "Stress and strain in sand caused by rotation of a model wall", pp.1968
- Burke, T. S. D., "Geosynthetic-reinforced soils above voids: Observation and prediction of soil arching", Geotextiles and Geomembranes, 49(3), pp.579~592 (2021)
- Chen, J. F., "Physical and numerical modelling of strip footing on geogrid reinforced transparent sand", Geotextiles and Geomembranes, 49(2), pp.399~412 (2021)
- Cheng, Z., "Quantification of the strain field of sands based on X-ray micro-tomography: A comparison between a grid-based method and a mesh-based method", Powder Technology, 344, pp.314~334 (2019)
- Das, B. M., "Principles of geotechnical engineering:Cengage learning" (2021)
- Niccolò Dematteis, "Comparison of Digital Image Correlation Methods and the Impact of Noise in Geoscience Applications", Remote Sensing, 13(2), pp.327~ (2021), MDPI AG[DOI]
- Dewoolkar, M. M., "Centrifuge modeling of granular soil response over active circular trapdoors", Soils and Foundations, 47(5), pp.931~945 (2007)
- Fang, Y. S., "Passive earth pressures with various wall movements", Journal of Geotechnical Engineering-Asce, 120(8), pp.1307~1323 (1994)
- Gao, Y., "High-efficiency and highaccuracy digital image correlation for three-dimensional measurement", Optics and Lasers in Engineering, 65, pp.73~80 (2015)
- Han, J., "Numerical analysis of geosynthetic-reinforced and pile-supported earth platforms over soft soil", Journal of Geotechnical and Geoenvironmental Engineering, 128(1), pp.44~53 (2002)
- Khatami, H., "An experimental study of the active arching effect in soil using the digital image correlation technique", Computers and Geotechnics, 108, pp.183~196 (2019)
- Lai, H. J., "Soil arching for piled embankments: insights from stress redistribution behaviour of DEM modelling", Acta Geotechnica, 15(8), pp.2117~2136 (2020)
- Liao, D., "Effect of fabric anisotropy on bearing capacity and failure mode of strip footing on sand:An anisotropic model perspective", Computers and Geotechnics, 138 (2021)
- Liu, X. J., "Study on Soil Temperature Measurement Based on Fiber Bragg Grating Sensing Technology in Cross Seasonal Heat Storage", Optics & Optoelectronic Technology (2017)
- Luque, R., "Dynamic Analyses of Two Buildings Founded on Liquefiable Soils during the Canterbury Earthquake Sequence", Journal of Geotechnical and Geoenvironmental Engineering, 143(9) (2017)
- Mei, G. X., "Model for predicting displacement-dependent lateral earth pressure", Canadian Geotechnical Journal, 46(8), pp.969~975 (2009)
- Michalowski, R. L., "Deformation patterns of reinforced foundation sand at failure", Journal of Geotechnical and Geoenvironmental Engineering, 129(5), pp.439~449 (2003)
- Ni, P. P., "Displacement-Dependent Lateral Earth Pressure Models", Journal of Engineering Mechanics, 144(6) (2018)
- Niedostatkiewicz, M., "Experimental Analysis of Shear Zone Patterns in Cohesionless for Earth Pressure Problems Using Particle Image Velocimetry", Strain, 47, pp.218~231 (2011)
- Pan, B., "Two-dimensional digital image correlation for in-plane displacement and strain measurement:a review", Measurement science and technology, 20(6), pp.062001~ (2009)
- Pan, B., "Study on subset size selection in digital image correlation for speckle patterns", Optics express, 16(10), pp.7037~7048 (2008)
- Peters, W., "Application of digital correlation methods to rigid body mechanics", Optical Engineering, 22(6), pp.226738~ (1983)
- Petley, D., "Global patterns of loss of life from landslides", Geology, 40(10), pp.927~930 (2012)
- Pitas, I., "Digital image processing algorithms and applications" (2000), John Wiley & Sons
- Stanier, S. A., "Improved image-based deformation measurement for geotechnical applications", Canadian Geotechnical Journal, 53(5), pp.727~739 (2016)
- Tafreshi, S. N. M., "Comparison of bearing capacity of a strip footing on sand with geocell and with planar forms of geotextile reinforcement", Geotextiles and Geomembranes, 28(1), pp.72~84 (2010)
- Tan, X., "Failure Process of a Single Stone Column in Soft Soil beneath Rigid Loading:Numerical Study", International Journal of Geomechanics, 20(8) (2020)
- Terzaghi, K., "Theoretical soil mechanics", pp.66~76 (1943)
- Terzaghi, K., "Soil mechanics in engineering practice" (1996), John Wiley & Sons
- Yao, C. F., "Using laser displacement transducer scanning technique in centrifuge modeling of reverse fault-foundation interaction", Soil Dynamics and Earthquake Engineering, 121, pp.219~232 (2019)
- Zhao, Y., "Evolution of active arching in granular materials: Insights from load, displacement, strain, and particle flow", Powder Technology, 384, pp.160~175 (2021)