Liquefaction and post-liquefaction of granular material under multi-directional cyclic loading

Hanwen Zhang, Yunming Yang, Hai Sui Yu

Research output: Journal PublicationArticlepeer-review

1 Citation (Scopus)

Abstract

Soil liquefaction can be induced by natural events that entail complicated loading directions and magnitudes. To investigate the liquefaction behaviour of granular material under complex loading conditions, a series of strain-controlled cyclic simple shear tests are conducted on the uniform-sized glass beads. These tests include uni-directional and multi-directional loading paths. An energy-based method is used to assist the understanding of the cyclic behaviour of the specimens. After the first liquefaction happens, the specimens are re-consolidated and subjected to monotonic undrained shearing to investigate their post-liquefaction behaviour. The test results indicate that the specimens subjected to multi-directional cyclic shearing are more prone to liquefy than those under uni-directional loading. Furthermore, the cyclic shear strain amplitude and cyclic loading path have significant influences on the soil liquefaction resistance, re-consolidation volumetric strain and post-liquefaction shear strength. Nevertheless, the total energy that is dissipated for liquefying a specimen is only dependent on its relative density.

Original languageEnglish
Pages (from-to)1261-1272
Number of pages12
JournalMarine Georesources and Geotechnology
Volume39
Issue number11
DOIs
Publication statusPublished - 2021

Keywords

  • Multi-directional cyclic simple shear
  • energy dissipation
  • granular material
  • liquefaction and post-liquefaction
  • settlement

ASJC Scopus subject areas

  • Oceanography
  • Ocean Engineering
  • Geotechnical Engineering and Engineering Geology

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