000010711 001__ 10711
000010711 005__ 20141205155756.0
000010711 04107 $$aeng
000010711 046__ $$k2008-10-12
000010711 100__ $$aLiang, Jianwen
000010711 24500 $$aScattering of Plane Waves by a 3-D Canyon in Layered Half-Space

000010711 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010711 260__ $$b
000010711 506__ $$arestricted
000010711 520__ $$2eng$$aThis paper presents a solution for plane waves scattering by a 3-D canyon in layered half-space in frequency domain by indirect boundary element method (IBEM), based on the exact dynamic stiffness matrices and the dynamic Green’s functions for uniformly distributed loads acting an inclined plane in 3-D layered half-space by the authors. The free-field response is carried out to give the displacements and stresses on the curved plane which forms the boundary of the canyon. The fictitious uniformly distributed loads are applied on the same curved plane to calculate the Green’s functions for the displacements and stresses. The amplitudes of the loads are determined by the boundary conditions. The displacements due to the free field and due to the fictitious uniformly distributed loads are added to obtain the whole motion. The accuracy of the solution is verified by comparison with the known solutions. The numerical calculations and analyses are performed for a hemispherical canyon in one single layer over half-space for incident waves. The results show that there exist distinct differences between the surface motion of a canyon in layered half-space and that in homogeneous half-space. It is found that the dynamic characteristics of the layered half-space significantly affect both the amplitudes and frequency spectrum of the surface motion.

000010711 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010711 653__ $$aScattering, plane waves, 3-D canyon, layered half-space, IBEM

000010711 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010711 720__ $$aLiang, Jianwen$$iLiu, Zhongxian$$iLee, Vincent W.
000010711 8560_ $$ffischerc@itam.cas.cz
000010711 8564_ $$s321657$$uhttps://invenio.itam.cas.cz/record/10711/files/03-03-0019.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 03-03-0019.
000010711 962__ $$r9324
000010711 980__ $$aPAPER