This paper presents a semi analytical solution for drained expansion of a cylindrical cavity in K0-consolidated clay. The solution is derived based on the K0-based anisotropic modified Cam-clay model (K0-AMCC), which can properly consider the initial stress anisotropy and the initial stress-induced anisotropy of natural soils. Parametric studies are carried out to investigate the effects of different over consolidation ratios on the growth of plastic zone and cavity pressure, the distributions of the stress components and the specific volume around the cavity, and the effective stress path. The results are compared with the published solution based on the modified Cam-clay model to study the effects of the initial stress anisotropy and the initial stress-induced anisotropy on the cylindrical cavity expansion. The present solution provides a more realistic interpretation for practical geotechnical engineering problems such as pressure meter tests and cone penetration tests.
J. Li et al., "Drained Elastoplastic Solution For Cylindrical Cavity Expansion In K0-consolidated Anisotropic Soil," Journal of Engineering Mechanics, vol. 143, no. 11, article no. 04017133, American Society of Civil Engineers, Nov 2017.
The definitive version is available at https://doi.org/10.1061/(ASCE)EM.1943-7889.0001357
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Drained expansion; Initial stress anisotropy; Initial stress-induced anisotropy; K0-based anisotropic modified Cam-clay model (K0-AMCC)
International Standard Serial Number (ISSN)
Article - Journal
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01 Nov 2017