2021
DOI: 10.1680/jgele.20.00124
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Episodic direct simple shear tests to measure changing strength for whole-life geotechnical design

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Cited by 15 publications
(11 citation statements)
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“…Equation 11 works no matter whether the soil has reached the critical state or not, as long as the shear induced excess pore pressure is fully dissipated. Equation 11 is consistent with previous studies of the settlement of normally consolidated clays following cyclic loading (Feng and Gourvenec, 2016;Laham et al, 2020;Ohara and Matsuda, 1988;Yasuhara and Andersen, 1991). However, Ohara and Matsuda (1988) found that the slope of the recompression line (i.e., in Equation 11) was in between the swelling line and virgin compression line from oedometer tests for Kaolinite clays.…”
Section: Consolidation After First Shear Failuresupporting
confidence: 89%
“…Equation 11 works no matter whether the soil has reached the critical state or not, as long as the shear induced excess pore pressure is fully dissipated. Equation 11 is consistent with previous studies of the settlement of normally consolidated clays following cyclic loading (Feng and Gourvenec, 2016;Laham et al, 2020;Ohara and Matsuda, 1988;Yasuhara and Andersen, 1991). However, Ohara and Matsuda (1988) found that the slope of the recompression line (i.e., in Equation 11) was in between the swelling line and virgin compression line from oedometer tests for Kaolinite clays.…”
Section: Consolidation After First Shear Failuresupporting
confidence: 89%
“…The combined effects of softening and consolidation are not usually considered in a single soil element test or a conventional in situ test. However, 'episodic' versions of both the T-bar Hodder 2010, Zhou et al 2020) and the DSS test (Yasuhara & Andersen 1991, Truong et al 2019, Laham et al, 2021 are possible, and offer the potential to provide model parameters by measuring responses akin to Fig. 6.…”
Section: Discussionmentioning
confidence: 99%
“…However, at present, we have not attempted to consider such high OCR cases, and we have focused instead on soft soils, where the opposing effects of cyclic softening and consolidation hardening are topical and offer potential design optimisation in relation to 'whole life design' (e.g. Lai et al 2020, Laham et al 2021, Gourvenec 2020, Guevara et al 2020.…”
Section: Discussionmentioning
confidence: 99%
“…swelling. Episodic shearing events-either monotonic or cyclic-with intervening consolidation periods have been shown to demonstrate periodic softening and hardening, with consolidation induced increases in strength often eclipsing shear induced softening in normally or lightly overconsolidated sediments [22][23][24]26], and associated increases in stiffness and coefficient of consolidation [22,23,26,27]. A selection of observations of the effects of repeated shearing and reconsolidation on strength, stiffness and coefficient of consolidation are highlighted in Figs.…”
Section: Evolving Soil Properties From Whole Life Shearing Actions An...mentioning
confidence: 99%