000011098 001__ 11098
000011098 005__ 20141205155836.0
000011098 04107 $$aeng
000011098 046__ $$k2008-10-12
000011098 100__ $$aNagase, Hideo
000011098 24500 $$aCharacteristics of Liquefaction Strength of Sand under Overconsolidation and Long-Term Consolidation Conditions

000011098 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011098 260__ $$b
000011098 506__ $$arestricted
000011098 520__ $$2eng$$aIf sandy soil deposits are subjected to overconsolidation or long-term consolidation, their liquefaction strength increases. However, only a few studies have investigated the effects of overconsolidation or long-term consolidation by means of laboratory element tests in order to simulate the in-situ ground condition more closely. In the present study, the liquefaction strength characteristics of overconsolidated sand samples were investigated under a K0-stress condition by using a hollow cylindrical torsional shear apparatus based on the of the supposition that earthquake excitations affect the ground horizontally. Further, a surcharge method was used to simulate the stress histories of overconsolidation. The effect of overconsolidation on the liquefaction strength was studied on sand samples that were consolidated for a considerable period of time. Clean Toyoura sand and sandy soil collected from the sea bed containing fines were used as samples. The following behaviors were observed in the tests: 1) The liquefaction strength of both types of sand increased due to overconsolidation when the samples were subjected to long-term consolidation before the stress history of overconsolidation was applied to them. 2) The increase in the liquefaction strength of the two types of sand subjected to overconsolidation and long-term consolidation could be formularized by the overconsolidation ratio and the time taken for long-term consolidation.

000011098 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011098 653__ $$aliquefaction strength, overconsolidation, long-term consolidation, sandy soil

000011098 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011098 720__ $$aNagase, Hideo$$iHirooka, Akihiko$$iSawada, Shuhei$$iNakamura, Shohei$$iInoue, Genki
000011098 8560_ $$ffischerc@itam.cas.cz
000011098 8564_ $$s446735$$uhttps://invenio.itam.cas.cz/record/11098/files/04-01-0188.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-01-0188.
000011098 962__ $$r9324
000011098 980__ $$aPAPER