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A new approach for the quasi-plane strain-softening problem of cylindrical cavity expansion based on Cam-Clay model

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Abstract

This paper focuses on the quasi-plane strain-softening problem of cylindrical cavity expanding in Cam-Clay soil mass. The quasi-plane strain-softening problem is defined based on the assumptions that the initial axial total strain is a non-zero constant and the axial plastic strain is not zero. A new approach for the major, intermediate, and minor principal strains are proposed based on the associated flow rule, 3-D plastic potential function, Hooke’s law, stress equilibrium equation and Cam-Clay model. The correctness of the proposed approach is validated by the results in Cao and Teh. Parametric studies were performed to investigate the influences of the intermediate principal stress on the radial and circumferential stresses and the radial displacement, respectively.

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Authors and Affiliations

  1. School of Civil Engineering, Central South University, Changsha, Hunan Province, China

    Jin-feng Zou & Jia-min Du

Authors
  1. Jin-feng Zou
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  2. Jia-min Du
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Corresponding author

Correspondence to Jin-feng Zou.

Additional information

Recommended by Associate Editor Jun-Sik Kim

Zou Jin-feng is a Professor at the Central South University, where he received his Ph.D. in Tunnel Engineering. His research interests include geotechnical engineering, cavity expansion theory and stability analysis of tunnels.

Du Jia-min is postgraduate student in School of Civil Engineering, Central South University, People's Republic of China. His research interests include underground engineering, cavity expansion theory and energy dissipation analyses.

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Zou, Jf., Du, Jm. A new approach for the quasi-plane strain-softening problem of cylindrical cavity expansion based on Cam-Clay model. J Mech Sci Technol 31, 1315–1320 (2017). https://doi.org/10.1007/s12206-017-0230-1

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  • DOI: https://doi.org/10.1007/s12206-017-0230-1

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