000013297 001__ 13297
000013297 005__ 20161114160335.0
000013297 04107 $$aeng
000013297 046__ $$k2009-06-22
000013297 100__ $$aFrancois, S.
000013297 24500 $$aA 2.5d coupled fe-be methodology for the dynamic interaction between longitudinally invariant structures and a layered halfspace

000013297 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013297 260__ $$bNational Technical University of Athens, 2009
000013297 506__ $$arestricted
000013297 520__ $$2eng$$aThis paper presents a general 2.5D coupled finite element – boundary element methodology for the computation of the dynamic interaction between a layered soil and longitudinally invariant structures, such as railway tracks, roads, tunnels, dams, vibration isolation screens in the soil, and pipelines. The classical 2.5D finite element method is combined with a novel 2.5D boundary element method, for which a regularized 2.5D boundary integral equation is derived. The use of a regularized boundary integral equation avoids the evaluation of singular traction integrals. The 2.5D Green’s functions of a layered halfspace, computed with the direct stiffness method, are used in a boundary element method formulation. This avoids meshing of the free surface and the layer interfaces with boundary elements and effectively reduces the computational efforts and storage requirements. The proposed technique is applied to four examples: a road on the surface of a halfspace, a tunnel embedded in a layered halfspace, a dike on a halfspace and a vibration isolating screen in the soil.

000013297 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013297 653__ $$aBoundary element method, elastodynamics, dynamic soil-structure interaction, 2.5D modelling. Abstract. This paper presents a general 2.5D coupled finite element – boundary element methodology for the computation of the dynamic interaction between a layered soil and longitudinally invariant structures, such as railway tracks, roads, tunnels, dams, vibration isolation screens in the soil, and pipelines. The classical 2.5D finite element method is combined with a novel 2.5D boundary element method, for which a regularized 2.5D boundary integral equation is derived. The use of a regularized boundary integral equation avoids the evaluation of singular traction integrals. The 2.5D Green’s functions of a layered halfspace, computed with the direct stiffness method, are used in a boundary element method formulation. This avoids meshing of the free surface and the layer interfaces with boundary elements and effectively reduces the computational efforts and storage requirements. The proposed technique is applied to four examples: a road on the surface of a halfspace, a tunnel embedded in a layered halfspace, a dike on a halfspace and a vibration isolating screen in the soil.

000013297 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013297 720__ $$aFrancois, S.$$iSchevenels, M.$$iGalv?n, P.$$iLombaert, G.$$iDegrande, G.
000013297 8560_ $$ffischerc@itam.cas.cz
000013297 8564_ $$s3672983$$uhttps://invenio.itam.cas.cz/record/13297/files/CD442.pdf$$yOriginal version of the author's contribution as presented on CD, section: Modeling and simulations of dynamic soil- structure interaction - ii (MS).
000013297 962__ $$r13074
000013297 980__ $$aPAPER