Effect of strain rate on mobilised strength and thickness of curved shear bands Available to Purchase

The shear strength of clays is strain-rate dependent, with the strength typically increasing by 5–20% for each order of magnitude increase in shear strain rate (Casagrande & Wilson, 1951; Graham et al., 1983). This has a particular consequence for collapse problems in geotechnical engineering, where high velocity gradients exist in particular shear zones. These are generally idealised as localised surfaces across which step changes in velocity parallel to the surface occur, such as in the classical collapse mechanism for a strip footing (Prandtl, 1921). While this idealisation may be appropriate for soils that exhibit...