Liquefaction and post-liquefaction of granular material under multi-directional cyclic loading. Issue 11 (4th November 2021)

• Record Type: Journal Article
• Authors: Zhang, Hanwen; Yang, Yunming; Yu, Hai-Sui
• Is Part Of: Marine georesources & geotechnology. Volume 39:Issue 11(2021)
• Page Start: 1261
• Page End: 1272
• Publication Date: 2021-11-04
• Subjects: Multi-directional cyclic simple shear -- liquefaction and post-liquefaction -- granular material -- settlement -- energy dissipation; Marine mineral resources -- Periodicals; 551.46
• DOI: 10.1080/1064119X.2020.1823536
• Languages: English
• ISSNs: 1064-119X

Abstract

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.