000010120 001__ 10120
000010120 005__ 20141205154145.0
000010120 04107 $$aeng
000010120 046__ $$k2008-10-12
000010120 100__ $$aGreen, Russell
000010120 24500 $$aThe Significance of Near-Fault Effects on Liquefaction

000010120 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010120 260__ $$b
000010120 506__ $$arestricted
000010120 520__ $$2eng$$aThe objective of the study presented herein is to access the influence of rupture directivity on the inducement of liquefaction in loose, saturated sand. Rupture directivity is a near fault phenomenon that results in a pronounced double-sided velocity pulse in the strike normal component(s) of motion. Using the Palmgren-Miner fatigue theory, implemented for low cycle fatigue conditions, the number of equivalent cycles were computed for twenty seven sets of strike normal and strike parallel components of motions, where the former components had the pronounced velocity pulses and the latter did not. Using these results and other results from site response analyses, the cyclic stress ratios adjusted to M7.5 were computed for both components of motions in a soil profile at a depth corresponding to ~1 atm of effective vertical stress. Two clear trends where identified. First, the strike normal components tended to induce larger cyclic stresses in the soil than the strike parallel components. However, the strike normal components of motions had fewer numbers of equivalent cycles as compared to the strike parallel components. Although these trends are somewhat compensating in their influence on the inducement of liquefaction, the net result was that the motions containing the rupture directivity pulses had a slightly larger potential to induce liquefaction than motions without the pulses.

000010120 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010120 653__ $$aliquefaction, near-fault effects, rupture directivity, directivity, number of equivalent cycles

000010120 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010120 720__ $$aGreen, Russell$$iLee, Jongwon$$iWhite, Theresa$$iBaker, Jack
000010120 8560_ $$ffischerc@itam.cas.cz
000010120 8564_ $$s215205$$uhttps://invenio.itam.cas.cz/record/10120/files/S26-019.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S26-019.
000010120 962__ $$r9324
000010120 980__ $$aPAPER