Shear bands in plane strain compression of loose sand
Shear bands in plane strain compression of loose sand
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DOI：
10.1680/geot.1997.47.1.149
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发表时间：
1997
期刊：
影响因子：
5.8
通讯作者：
R. Finno;W. W. Harris-W.;M. Mooney;G. Viggiani
中科院分区：
文献类型：
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作者：
R. Finno;W. W. Harris-W.;M. Mooney;G. Viggiani
实验结果描述了在平面应变装置中在整体不排水和排水条件下测试的松散、细粒、水饱和砂的行为。本次调查的目的是深入了解松散砂中的剪切带现象。与边界力和变形的局部测量一起，立体摄影测量用于研究平面应变压缩中应变局部化的进展。详细介绍了有关非均匀变形演化的典型结果和发现。在松散砌筑砂的不排水和排水实验中都出现了剪切带。一般来说，在样本宏观“均匀”变形过程中观察到的应变局部化的临时模式让位于单一的、持久的剪切带。观察到持续剪切带形成、最大有效摩擦力的调动以及带的完全形成的清晰模式......
Experimental results are presented which characterize the behaviour of a loose, fine-grained, water-saturated sand tested under globally undrained and drained conditions in a plane strain apparatus. The objective of this investigation is to provide insight into the phenomenon of shear banding in loose sand. Together with local measurements of boundary forces and deformations, stereophotogrammetry is used to investigate the progression of strain localization in plane strain compression. Typical results and findings concerning the evolution of non-homogeneous deformation are presented in detail. Shear banding occurred in both undrained and drained experiments on loose masonry sand. In general, temporary modes of strain localization, observed during macroscopically ‘uniform’ deformations of a specimen, gave way to a single, persistent shear band. A clear pattern of onset of the formation of the persistent shear band, mobilization of the maximum effective friction and complete formation of the band was observ...