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# A liquefaction surface to describe liquefaction phenomena in unsaturated sandy soils

Mele, Lucia; Lirer, Stefania; Flora, Alessandro

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{
"publisher": "Zenodo",
"DOI": "10.5281/zenodo.3463558",
"language": "eng",
"title": "A liquefaction surface to describe liquefaction phenomena in unsaturated sandy soils",
"issued": {
"date-parts": [
[
2019,
7,
19
]
]
},
"abstract": "<p>The energetic interpretation of liquefaction tests indicates that the behavior of unsaturated<br>\nsands can be related to the specific energy spent to liquefaction In this paper, an insight<br>\nis proposed on the role played by the two components of such a specific energy: the specific<br>\nvolumetric energy to liquefaction (Ev,liq) and the specific deviatoric energy to liquefaction (Es,liq).<br>\nIt is argued that Ev,liq (which is nil in saturated soils) can be considered as a state variable to<br>\nquantify the increase of cyclic resistance caused by a reduced degree of saturation, being thus<br>\nconstant along a given cyclic resistance curve. Es,liq is instead related to a specific value of cyclic<br>\nresistance ratio or number of cycles at liquefaction via the value of the volumetric component. In<br>\nfact, for saturated tests (Ev,liq=0) Es,liq is constant for a fixed number of cycles at liquefaction (Nliq).<br>\nFor unsaturated tests, Es,liq increases as Ev,liq increases for a given value of Nliq. The three variables<br>\n(Ev,liq, Es,liq and Nliq) define a &ldquo;liquefaction surface&rdquo; describing the resistance to liquefaction of<br>\nunsaturated soils.</p>",
"author": [
{
"family": "Mele, Lucia"
},
{
"family": "Lirer, Stefania"
},
{
"family": "Flora, Alessandro"
}
],
"type": "paper-conference",
"id": "3463558"
}
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