Drained Cylindrical Cavity Expansion In Modified Cam-clay Soil Under Biaxial In-situ Stresses

Abstract

A drained solution is derived for cylindrical cavity expansion in modified Cam-clay soils under biaxial in-situ stresses. The problem is formulated by solving a system of first-order differential equations using an auxiliary variable, which provides semi-analytical expressions for stresses and specific volume. The solution validity is examined through comparisons with the existing solution and the finite element simulation. The results show that the elastic-plastic boundary of cylindrical cavity expanding under biaxial in-situ stresses is an ellipse, due to the existence of shear stress. Besides, the stress distribution and the stress path change significantly with the variation of radial direction.

Department(s)

Geosciences and Geological and Petroleum Engineering

Comments

National Natural Science Foundation of China, Grant 41772290

Keywords and Phrases

Biaxial stresses; Drained; Elastic-plastic boundary; Ellipse; Shear stress

International Standard Serial Number (ISSN)

1873-7633; 0266-352X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 Elsevier, All rights reserved.

Publication Date

01 May 2020

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