Shear Band Development in Sandy Soil Beneath Strip Footing using PIV
2009; American Institute of Physics; Linguagem: Inglês
10.1063/1.3179854
ISSN1935-0465
AutoresYukio Nakata, Masayuki Hyodo, Quio Hui, R. Orence, N. Kikkawa, Masami Nakagawa, Stefan Luding,
Tópico(s)Geotechnical Engineering and Analysis
ResumoIn order to investigate shear band development in ground beneath a strip footing, model tests were performed on two kinds of sands. Particle Image Velocimetry (PIV) technique was introduced to measure the velocity vector field and enough accuracy was indicated to observe the shear bands. One of the materials used was Toyoura sand, which consisted of hard and strong silica particles. The shear band showed similar properties with the published data from plane strain compression tests. The other sand was a decomposed granite soil, which consisted of crushable particles such as feldspar and mica. The shear band was much thinner in term of the normalised thickness than that for Toyoura sand. In addition, the thickness decreased with increasing settlement of the footing, which was opposite to that observed for Toyoura sand.
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