1. 淮阴工学院 建筑工程学院,江苏,淮安,223001
2. 南京工业大学 交通学院,南京,210009
纸质出版:2012
移动端阅览
陈亚东, 王旭东, 佘跃心. 岩土模型试验中土体变形的数字图像测量[J]. 土木与环境工程学报(中英文), 2012,34(5):92-96.
CHEN Yadong, WANG Xudong, SHE Yuexin. Image-Based Soil Deformation Measurement in Geotechnical Model Test[J]. Journal of Civil and Environmental Engineering, 2012, 34(5): 92-96.
陈亚东, 王旭东, 佘跃心. 岩土模型试验中土体变形的数字图像测量[J]. 土木与环境工程学报(中英文), 2012,34(5):92-96. DOI: 10.3969/j.issn.1674-4764.2012.05.014.
CHEN Yadong, WANG Xudong, SHE Yuexin. Image-Based Soil Deformation Measurement in Geotechnical Model Test[J]. Journal of Civil and Environmental Engineering, 2012, 34(5): 92-96. DOI: 10.3969/j.issn.1674-4764.2012.05.014.
变形量测分析在岩土模型试验研究中占据十分重要的地位。利用四边形等参单元概念,给出基于位移模式的土体剪应变计算方法,采用互相关的图像匹配技术,编制相应的数字图像相关变形分析程序,实例验证结果表明该程序具有可靠的精度。利用该技术对方形基础室内模型试验中的土体变形进行测量,结果表明基于数字图像的测量系统能够实现岩土模型试验中土体位移场及剪应变场发展直至破坏的全过程定量测量,为土体细观力学特性与全场变形特性定性与定量研究提供了有力的工具。
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.
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