Undrained bearing capacity of ring foundations on two-layered clays

Joon Kyu Lee, Sangseom Jeong, Julie Q. Shang

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


This paper presents the results of a numerical investigation into the undrained vertical bearing capacity of rough ring foundations resting on two-layered clays of both homogeneous and linearly increasing shear strength profiles. Small displacement finite element predictions are compared with the available empirical, analytical and numerical solutions, and expressed in the familiar form of bearing capacity factors reflecting the coupling effects of the dimensionless parameters related to foundation internal opening, relative top layer thickness, strength difference between two layers, and strength non-homogeneity. The depth beyond which the shear strength of the bottom layer does not affect the bearing capacity, defined here as critical depth ratio, is identified. The failure mechanisms of ring foundations are also discussed in terms of the displacement pattern.

Original languageEnglish
Pages (from-to)47-57
Number of pages11
JournalOcean Engineering
Publication statusPublished - 2016 Jun 1

Bibliographical note

Funding Information:
The authors acknowledge support in this research for the National Research Foundation of Korea (NRF) (Grant no. 2011-0030040 ).

Publisher Copyright:
© 2016 Elsevier Ltd.

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Ocean Engineering


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