Image-Based Soil Deformation Measurement in Geotechnical Model Test
CHEN Yadong,WANG Xudong and SHE Yuexin
DOI:10.3969/j.issn.1674-4764.2012.05.014
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2012,Pages 92-96
- Abstract
Deformation measurement and analysis play an important role in geotechnical model tests. Using the concept of quadrilateral isoperimetric element, the strain filed was achieved from the calculation method based on displacement modes, and the verification results show that this measurement technique has a reliable precision. The soil deformation in model test of square shallow foundation was measured by using this technique, and the results show that the measurement system based on digital image correlation method can realize the whole process quantitative measurement of soil displacement field and shear strain filed. This deformation measurement technique provides a tool for the qualitative and quantitative analysis of soil micromechanics characteristics.