000004847 001__ 4847
000004847 005__ 20141119144558.0
000004847 04107 $$aeng
000004847 046__ $$k2002-06-02
000004847 100__ $$aThevanayagam, S.
000004847 24500 $$aCONTACT DENSITY – CONFINING STRESS – ENERGY TO LIQUEFACTION

000004847 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004847 260__ $$bColumbia University in the City of New York
000004847 506__ $$arestricted
000004847 520__ $$2eng$$aSoil liquefaction phenomenon involves progressive reorganization of intergrain contacts, frictional loss of energy, and eventual collapse of soil skeleton. Resistance to liquefaction depends on the nature and density of active intergrain contacts. Higher the density of active intergrain contacts (per grain) more resistant is the soil to liquefaction. Higher is the confining stress higher is the energy loss along contacts and higher is the resistance to liquefaction. This paper examines this idea analytically and experimentally. A theoretical framework for estimation of an index of active contact density for granular mix soil is presented. Theoretical expression for internal frictional energy loss W is developed. W agrees well with the measured external energy input. Both theory and experimental data indicate that the energy required to cause liquefaction increases linearly with initial effective confining stress and increases log-linearly with intergrain contact density.

000004847 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004847 653__ $$aLiquefaction, energy, sand, silt, silty sand, sandy silt, equivalent void ratio

000004847 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004847 720__ $$aThevanayagam, S.$$iKanagalingam, T.$$iShenthan, T.
000004847 8560_ $$ffischerc@itam.cas.cz
000004847 8564_ $$s466272$$uhttps://invenio.itam.cas.cz/record/4847/files/428.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004847 962__ $$r4594
000004847 980__ $$aPAPER