Cavity expansion in k0 consolidated clay

Abstract

An elastic-plastic semi-analytical approach is proposed for predicting the cylindrical cavity expansion in $K_0$-consolidated clay. The approach is based on the assumption of small deformation in the elastic region, the $K_0$-based Modified Cam clay ($K_0-\mathit{MCC}$) model is adopted for the $K_0$-consolidated clay, the process of cavity expansion is considered in undrained condition and the semi-analytical approach is obtained by using the similarity technique and large deformation theory in the plastic region. The comparison between the cavity wall pressure and excess pore pressure obtained from the proposed approach and the published data is carried out and shows a good agreement.

Keywords:

• Cavity expansion
• ${\mathit{K}}_0$-consolidated clay
• ${\mathit{K}}_0-\mathit{MCC}$ model
• similarity technique
• cavity wall pressure
• excess pore pressure

Notation

The following symbols are used in the study:

Acknowledgments

The Editor’s and anonymous reviewers’ comments have improved the quality of the study and are also greatly acknowledged.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Key R&D Program of China (2017YFB1201204). The first author thanks Project 2018zzts188 supported by Innovation Foundation for Postgraduate of the Central South University.