000019905 001__ 19905
000019905 005__ 20170118182343.0
000019905 04107 $$aeng
000019905 046__ $$k2017-01-09
000019905 100__ $$aChaillat, Stéphanie
000019905 24500 $$aSeismic Wave Amplification in 3D Alluvial Basins: Aggravation Factors From Fast Multipole Bem Simulations

000019905 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019905 260__ $$b
000019905 506__ $$arestricted
000019905 520__ $$2eng$$aIn this work, we study seismic wave amplification in alluvial basins having 3D canonical geometries through the Fast Multipole Boundary Element Method in the frequency domain. We investigate how much 3D amplification differs from the 1D (horizontal layering) and the 2D cases. Considering synthetic incident wave-fields, we examine the relationships between the amplification level and the most relevant physical parameters of the problem (impedance contrast, 3D aspect ratio, vertical and oblique incidence of plane waves). The FMBEM results show that the most important parameters for wave amplification are the impedance contrast and equivalent shape ratio. Using these two parameters, we derive simple rules to compute the fundamental frequency for different 3D basin shapes and the corresponding 3D aggravation factor for 5% damping. Effects on amplification due to 3D basin asymmetry are also studied and incorporated in the derived rules..

000019905 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019905 653__ $$asite effects, wave amplification, aggravation factors, 3D effects, numerical modelling

000019905 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019905 720__ $$aChaillat, Stéphanie$$iLenti, Luca$$iMeza-Fajardo, Kristel$$iSemblat, Jean-François
000019905 8560_ $$ffischerc@itam.cas.cz
000019905 8564_ $$s496574$$uhttps://invenio.itam.cas.cz/record/19905/files/4648.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4648.
000019905 962__ $$r16048
000019905 980__ $$aPAPER