000019790 001__ 19790
000019790 005__ 20170118182336.0
000019790 04107 $$aeng
000019790 046__ $$k2017-01-09
000019790 100__ $$aSemblat, Jean-Francois
000019790 24500 $$aA 3D Macroelement To Model the Seismic Behaviour of Shallow Foundations

000019790 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019790 260__ $$b
000019790 506__ $$arestricted
000019790 520__ $$2eng$$aIn this article, a 3D macroelement to model the seismic behaviour of shallow foundations is formulated, taking into account the non-linearities in the soil and the soil-foundation interface. The main idea of a macroelement is to describe the foundation behaviour using generalized variables (forces and displacements), defined in particular points of the foundation. The forces and displacements at these points are linked by elastoplastic constitutive laws. The non linearities are studied according to the classical plasticity theory, and the multisurface plasticity theory is used to combine the different mechanisms (punching, overturning, and sliding). This macroelement is implemented in the framework of the finite element method (CESAR-LCPC). This macroelement permits to simulate the 3D behaviour of a rectangular foundation subjected to complex seismic excitations, and to assess the effects of the limits imposed by the current standards. The time variation of the safety factor during the seismic event is highlighted, as well as the effect of the non linearities on the design demand.

000019790 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019790 653__ $$aSoil structure interaction, macroelement, shallow foundation, earthquake, plasticity, numerical analysis, design.

000019790 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019790 720__ $$aSemblat, Jean-Francois$$iAbboud, Youssef$$iBurlon, Sebastien
000019790 8560_ $$ffischerc@itam.cas.cz
000019790 8564_ $$s846808$$uhttps://invenio.itam.cas.cz/record/19790/files/4418.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4418.
000019790 962__ $$r16048
000019790 980__ $$aPAPER