Numerical Investigation of the Undrained Compression and Pull-Out Capacity of Suction Foundations in Clay

J. Du, S. Du, S. Shen, Zhenyu Yin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

This paper presents the results of three-dimensional finite difference analysis of suction foundations in uniform and non-uniform clays under undrained conditions. The Tresca criterion was used to simulate the stress-strain response. The bearing capacity of the foundations was investigated, with the degree of nonhomogeneity (kD/sum) of soil varying from 0 to 5, and the embedment depth being up to four times the foundation diameter. The end bearing capacity factor in compression and the reverse bearing capacity factor in tension were both calculated and were compared with each other under different foundation displacements. Numerical results showed that the ultimate bearing capacity factor can have the same value in cases of both compression and tension. The recommended ultimate bearing capacity factor is determined on the basis of the embedment ratio and displacement magnitude, and the displacement is not more than 30% of the foundation diameter. Finally, two equations are proposed to evaluate both the bearing capacity factor and the effective depth factor.
Original languageEnglish
Pages (from-to)126-135
Number of pages10
JournalPolish Maritime Research
Volume22
Issue numbers1
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes

Keywords

  • Bearing capacity factor
  • compression
  • depth factor
  • displacement
  • tension

ASJC Scopus subject areas

  • Ocean Engineering
  • Mechanical Engineering

Cite this