000020097 001__ 20097
000020097 005__ 20170118182354.0
000020097 04107 $$aeng
000020097 046__ $$k2017-01-09
000020097 100__ $$aWijewickreme, Dharma
000020097 24500 $$aComparison of Cyclic Shear Response of Three Natural Fine-Grained Soils Having Different Plasticity

000020097 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020097 260__ $$b
000020097 506__ $$arestricted
000020097 520__ $$2eng$$aA systematic laboratory experimental research program has been undertaken to further investigate the cyclic shear loading response of natural fine-grained soils. The study findings add to the information base on the observed effects of plasticity index (PI) on the cyclic response of natural soils, which is an important consideration in the current practice for assessing cyclic failure of fine-grained soils. As a part of this study, the shear response of natural fine-grained soil samples retrieved from the Fraser River Delta of the Lower Mainland of British Columbia, Canada was investigated using constant volume cyclic direct simple shear (CDSS) testing. During constant-volume CDSS loading, gradual increment of pore water pressure, shear strain, and associated progressive degradation of stiffness with increasing number of loading cycles were observed for all tested natural undisturbed soil specimens, despite their different plasticity and soil gradation. The potential for excess pore water pressure and shear strain development with number of cycles was noted to decrease with increasing soil plasticity; in turn, the cyclic resistance of natural undisturbed soil specimens was noted to decrease with decreasing soil plasticity.

000020097 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020097 653__ $$afine-grained soil; plasticity; cyclic shear loading; silt behaviour; liquefaction

000020097 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020097 720__ $$aWijewickreme, Dharma$$iSoysa, Achala
000020097 8560_ $$ffischerc@itam.cas.cz
000020097 8564_ $$s1395123$$uhttps://invenio.itam.cas.cz/record/20097/files/550.pdf$$yOriginal version of the author's contribution as presented on USB, paper 550.
000020097 962__ $$r16048
000020097 980__ $$aPAPER