000011321 001__ 11321
000011321 005__ 20141205155859.0
000011321 04107 $$aeng
000011321 046__ $$k2008-10-12
000011321 100__ $$aPeng, Bor-Feng
000011321 24500 $$aNonlinear Dynamic Soil-Pile-Structure-Interaction Analysis of Offshore Platform for Ductility Level Earthquake under Soil Liquefaction Conditions

000011321 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011321 260__ $$b
000011321 506__ $$arestricted
000011321 520__ $$2eng$$aThis paper presents the rigorous methodology and structural analysis procedures required for nonlinear dynamic soil-pile-structure-interaction analysis of offshore platforms under ductility level earthquakes with emphasis on the soil liquefaction conditions. The nonlinear inelastic soil properties including the cyclic strain rate, gapping, and the hysteretic energy dissipation are considered. The non-linear beam-column element and non-linear strut element, which were calibrated with numerous test results for offshore structures, are modeled and presented. Three sets of representative ground motion time histories, which characterize the likely envelop of ground intensity, frequency content, phasing and duration expected at the site, are considered in the analysis. The comparison of the evolutionary power spectral density of the earthquake ground motion accelerations is outlined for soil liquefaction and non-liquefaction conditions in terms of the intensity and frequency content of the ground motion accelerations. The impact of the soil liquefaction conditions on the structural response and especially for the pile foundation system design, are illustrated using a recently successfully designed platform in the seismic active area offshore Trinidad. API and ISO seismic design requirements are briefly discussed. The most critical structural components of the pile-jacket connections design are demonstrated by the nonlinear finite element analysis with the large deformation of the platform and the material plasticity of the steel considered.

000011321 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011321 653__ $$asoil liquefaction, evolutionary power spectral density, offshore platform, ductility level earthquake, soil-pile-structure interaction

000011321 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011321 720__ $$aPeng, Bor-Feng$$iChang, Ben$$iLenow, Bee-lay$$iNandlal, Sam
000011321 8560_ $$ffischerc@itam.cas.cz
000011321 8564_ $$s600765$$uhttps://invenio.itam.cas.cz/record/11321/files/05-01-0386.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0386.
000011321 962__ $$r9324
000011321 980__ $$aPAPER