Comparative Study on Frequency and Time Domain Analyses for Seismic Site Response   Ciro Visone, Filippo Santucci de Magistris University of Molise – Structural and Geotechnical Dynamic Laboratory STReGa – via Duca degli Abruzzi – Termoli (CB) - Italy e-mail: Emilio Bilotta University of Napoli – Department of Hydraulic, Geotechnical and Environmental Engineering – via Claudio, 21 - Napoli - Italy e-mail:
			ABSTRACT

In this paper, a comparative study on frequency and time domain analyses for the evaluation of the seismic response of subsoil to the earthquake shaking is presented. After some remarks on the solutions given by the linear elasticity theory for this type of problem, the use of some widespread numerical codes is illustrated and the results are compared with the available theoretical predictions. Bedrock elasticity, viscous and hysteretic damping, stress-dependency of the stiffness and nonlinear behaviour of the soil are taken into account. A series of comparisons between the results obtained by the different computer programs is shown.

Keywords: dynamic analyses, local site response, soil damping modelling, finite elements

Get the entire paper (pdf)     Go back to the TOC