A 3D non-linear finite element approach is developed to study the free-field seismic ground response and the soil-structure interaction (SSI) phenomena at the Lotung site (Taiwan) during the earthquake event occurred on May 20 1986. The site was extensively instrumented with down-hole and surface accelerometers, these latter located also on a 1/4–scale nuclear power plant containment structure. An advanced constitutive model is adopted for simulating the soil behaviour, while a linear visco-elastic behaviour is assumed for the structural model. Both the free-field and SSI analyses are carried out applying the EW horizontal component of the acceleration time history as recorded at the depth of 47 m b.g.l. The predicted ground response results are in fair agreement with the recorded motion at depth and at the surface. Also, the dynamic response of structure is well captured for this specific seismic event, thus confirming the validity of the numerical approach.

Advanced numerical approaches to the seismic soil and structural response analyses / Amorosi, Angelo; Boldini, Daniela; Di Lernia, Annamaria. - CD-ROM. - (2015). (Intervento presentato al convegno SECED 2015 Conference: Earthquake Risk and Engineering towards a Resilient World tenutosi a Cambridge, UK nel July 9-10, 2015).

Advanced numerical approaches to the seismic soil and structural response analyses

Annamaria Di Lernia
2015-01-01

Abstract

A 3D non-linear finite element approach is developed to study the free-field seismic ground response and the soil-structure interaction (SSI) phenomena at the Lotung site (Taiwan) during the earthquake event occurred on May 20 1986. The site was extensively instrumented with down-hole and surface accelerometers, these latter located also on a 1/4–scale nuclear power plant containment structure. An advanced constitutive model is adopted for simulating the soil behaviour, while a linear visco-elastic behaviour is assumed for the structural model. Both the free-field and SSI analyses are carried out applying the EW horizontal component of the acceleration time history as recorded at the depth of 47 m b.g.l. The predicted ground response results are in fair agreement with the recorded motion at depth and at the surface. Also, the dynamic response of structure is well captured for this specific seismic event, thus confirming the validity of the numerical approach.
2015
SECED 2015 Conference: Earthquake Risk and Engineering towards a Resilient World
Advanced numerical approaches to the seismic soil and structural response analyses / Amorosi, Angelo; Boldini, Daniela; Di Lernia, Annamaria. - CD-ROM. - (2015). (Intervento presentato al convegno SECED 2015 Conference: Earthquake Risk and Engineering towards a Resilient World tenutosi a Cambridge, UK nel July 9-10, 2015).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/206773
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