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PRENOLIN Project: a benchmark on numerical simulation of 1D non-linear site effect. Results of the validation phase

Abstract : One of the objectives of the PRENOLIN project is the assessment of uncertainties associated with non-linear simulation of 1D site effects. An international benchmark is underway to test several numerical codes computing the non-linear seismic site response, including various non-linear soil constitutive models. The preliminary verification phase (i.e. comparison between numerical codes on simple, idealistic cases) is now followed by the validation phase, which compares predictions of such numerical estimations with actual strong motion data recorded from well-known sites. The benchmark involves 21 teams dealing with 21 different non-linear computations. Extensive site characterization was performed at three sites of the Japanese KiK-net and PARI networks. The first results indicate that the linear site response is overestimated while the non-linear effects are underestimated. At the end of this phase, most of the epistemic uncertainty sources for non-linear site response analysis is recognized as due to the constitutive model linked to the interpretation of the soil data. PRENOLIN is part of two larger projects: SINAPS@, funded by the ANR (French National Research Agency) and SIGMA, funded by a consortium of nuclear operators (EDF, CEA, AREVA, ENL).
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Submitted on : Sunday, March 25, 2018 - 8:51:05 PM
Last modification on : Monday, October 12, 2020 - 11:10:19 AM
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Régnier Julie, Luis-Fabian Bonilla, Pierre-Yves Bard, Hiroshi Kawase, Etienne Bertrand, et al.. PRENOLIN Project: a benchmark on numerical simulation of 1D non-linear site effect. Results of the validation phase. 9ème Colloque National AFPS2015, AFPS / IFSTTAR, Nov 2015, Marne-la-Vallée, France. ⟨insu-01742611⟩

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