000018290 001__ 18290
000018290 005__ 20170118182215.0
000018290 04107 $$aeng
000018290 046__ $$k2017-01-09
000018290 100__ $$aKiyota, Takashi
000018290 24500 $$aVariation of Shear Wave Velocity and Liquefaction Resistance of Toyoura Sand Under Constant Specimen Density

000018290 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018290 260__ $$b
000018290 506__ $$arestricted
000018290 520__ $$2eng$$aIn order to investigate variation of shear wave velocity and liquefaction resistance of Toyoura sand specimen with relative density of 50%, which is caused by the different number of cyclic loading histories, first, a series of shear wave velocity measurement were conducted. It was found that the shear wave velocity of the specimen increases with increase in the number of drained cyclic loading history. Second, undrained cyclic triaxial tests were conducted on the above-mentioned specimens. The liquefaction resistance increases with a large number of cyclic loading history, and there is good correlation between shear wave velocity and liquefaction resistance. However, both the shear wave velocity and liquefaction resistance of the specimen with 2000 cyclic loading history and those with 3000 cyclic loading history are similar to each other which indicate an upper limit of shear wave velocity and liquefaction resistance under the given specimen density. Third, in order to obtain a lower limit of shear wave velocity and liquefaction resistance, another series of experiments were performed on a specimen which has several liquefaction histories. The result shows that the smallest values of the shear wave velocity and liquefaction resistance of the specimen were measured at the second stage of liquefaction test. For Toyoura sand specimen with relative density of 50%, the upper limits of shear wave velocity and liquefaction resistance are about 16% and 250% larger than their lower limits respectively.

000018290 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018290 653__ $$aliquefaction, triaxial test, shear wave velocity

000018290 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018290 720__ $$aKiyota, Takashi$$iWu, Chiehyu
000018290 8560_ $$ffischerc@itam.cas.cz
000018290 8564_ $$s600650$$uhttps://invenio.itam.cas.cz/record/18290/files/1173.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1173.
000018290 962__ $$r16048
000018290 980__ $$aPAPER