000010075 001__ 10075
000010075 005__ 20141205154142.0
000010075 04107 $$aeng
000010075 046__ $$k2008-10-12
000010075 100__ $$aGhayamghamian, Mohammad Reza
000010075 24500 $$aSeismic Behavior of Small-Scale Basin Using Centrifuge Testing

000010075 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010075 260__ $$b
000010075 506__ $$arestricted
000010075 520__ $$2eng$$aThe lifeline facilities revealed high damage ratio in the vicinity of small-scale basin (scales in tens of meters). To explain the reasons of observed damage, the site response due to wave propagation in small-scale basin are numerically and experimentally investigated. A set of centrifuge tests is conducted on a simple small-scale basin model instrumented using 14 accelerometers. The accelerometers are placed at the base and top of the basin model in different distances and directions from the basin edge. The model is subjected to the different earthquake motions during centrifuge testing. Then, the site response at various locations is estimated using surface to base spectral ratio analysis in the frequency domain. The dominant frequencies and peak values vary significantly depending on the observation location to the basin edge. The amplification function within the basin edge show more peak frequencies with higher values than the others. The results of numerical analysis using 2D finite element computer program FILP agreed well with the experimental ones, certifying that the site amplification characteristics can be impacted by 2D effects of small-scale basin. The reasons are explained based on the coupling of shear waves propagating in different soil properties produced by 2D shape of small basin at close distance to the edge.

000010075 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010075 653__ $$aSmall-scale basin, geological irregularities, shear wave coupling, centrifuge test.

000010075 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010075 720__ $$aGhayamghamian, Mohammad Reza$$iTobita, Tetsuo$$iIai, Susumu
000010075 8560_ $$ffischerc@itam.cas.cz
000010075 8564_ $$s459001$$uhttps://invenio.itam.cas.cz/record/10075/files/04-02-0026.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-02-0026.
000010075 962__ $$r9324
000010075 980__ $$aPAPER