Cyclic volumetric strain accumulation for sand under drained simple shear condition

Ze Xiang WU, Zhen Yu YIN, Christophe DANO, Pierre Yves HICHER

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

Volumetric strain of a soil element surrounding the pile accumulated under the drained cyclic loading condition is one of major concerns in geotechnical engineering design. In this paper, twenty stress-controlled drained simple shear tests, with 5000 cycles on Fontainebleau sand have been carried out, which aims to investigate four factors influencing cyclic accumulation behaviour: initial void ratio, normal stress, cyclic shear stress ratio and average shear stress ratio. Based on results, the cyclic volumetric strain accumulation for each influencing factor is summarized, which is found highly sensitive to the cyclic shear stress ratio that a bigger magnitude (more than 0.2) leads to a larger degree of densification. In addition, a simple analytical model is then proposed accounting for these factors with seven parameters that can be directly calibrated from laboratory tests. Finally, the applicability of the model is examined by simulating the additional tests through an adoption of the parameters calibrated by the training tests.

Original languageEnglish
Article number102200
JournalApplied Ocean Research
Volume101
DOIs
Publication statusPublished - Aug 2020

Keywords

  • analytical model
  • Cyclic behaviour
  • sand
  • simple shear
  • strain accumulation

ASJC Scopus subject areas

  • Ocean Engineering

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