A hypoplastic macroelement model for a caisson foundation in sand under monotonic and cyclic loadings

Zhuang Jin, Zhen Yu Yin, Panagiotis Kotronis, Zheng Li, Claudio Tamagnini

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

Nowadays, the numerical analysis of caisson foundations of offshore structures is a big challenge in engineering design. A simple, fast and accurate numerical tool is proposed in this article based on the macroelement concept. The novel macroelement is within the framework of hypoplasticity and can consider static monotonic and cyclic combined (multidirectional) loads for a caisson foundation in sand. The incremental nonlinear constitutive formulas are defined in terms of generalised forces and displacements and an enhanced function of failure surface is introduced. A series of well-documented laboratorial reduced-scale 1g model tests are adopted to validate the novel numerical tool. Results demonstrate a satisfied predictive performance of the proposed macroelement that can be used in caisson foundation design and constitutes an alternative to the traditional finite element analysis.

Original languageEnglish
Pages (from-to)16-26
Number of pages11
JournalMarine Structures
Volume66
DOIs
Publication statusPublished - Jul 2019

Keywords

  • Caisson foundation
  • Cyclic loading
  • Hypoplasticity
  • Macroelement
  • Sand
  • Soil-structure interaction

ASJC Scopus subject areas

  • Materials Science(all)
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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