岩土力学Issue(11)：3157-3163,7.DOI:10.16285/j.rsm.2015.11.016
利用人工合成透明土的岩土物理模拟试验
Geotechnical physical model test using artificial synthetic transparent soil
摘要
Abstract
By combining the technologies of particle image velocimetry (PIV) and close-range photogrammetry, a procedure for geotechnical physical modelling using artificial synthetic transparent soil is developed. The soil deformation caused by the shallow foundation settlement (SFS) are measured and recorded non-intrusively. The conventional model test using natural soils is employed for the purpose of comparison. The transparent soil is made of a pore solution, the refractive index of which is matched with the refractive index of fused quartz. Transparent soil model is sliced by using a laser light sheet and digital images of soil deformations caused by SFS are captured. The MATLAB-based software, Geo-PIV, is employed to obtain the generated displacement fields. The results show that the SFS-induced disturbance zone is enlarged in transparent soil, the maximum shear strain expands by about 1.5 times, and the range of surface heaving increases by 30-50% in transparent soil compared with those in natural soil;however, the movement trends of soil elements in transparent soils are generally similar to those in natural soils, indicating that the proposed modelling methodology has applicability to mechanism study to some extent.关键词
岩土物理模拟/透明土/浅基础沉降(SFS)/非侵入测量/粒子图像测速(PIV)Key words
geotechnical physical simulation/transparent soil/shallow foundation settlement (SFS)/non-intrusive measurement/particle image velocimetry (PIV)分类
建筑与水利引用本文复制引用
齐昌广,范高飞,崔允亮,张强..利用人工合成透明土的岩土物理模拟试验[J].岩土力学,2015,(11):3157-3163,7.基金项目
国家自然科学基金青年科学基金项目（No.51508282）；浙江省自然科学基金青年基金项目（No.LQ15E080002）。@@@@Project supported by the Youth Science Fund Project supported by National Natural Science Foundation of China (Grant No.51508282) and the Youth Fund Project supported by Zhejiang Provincial Natural Science Foundation of China (Grant No.LQ15E080002) （Grant No.51508282）
