Seismic amplification of ground motion due to topographic effects at the Nicastro and Gerace cliffs (Calabria, Southern Italy) is investigated. Linear and non linear 2D numerical analyses are carried out on representative cross-sections using FLAC finite difference computer code. Additionally 1D analyses accounting only for stratigraphic effect are also carried out. A topographic amplification factor at the crest is then obtained taking the ratio of 2D over 1D horizontal peak acceleration and Fourier spectrum. The calculated amplification factors are compared with those recommended by EC8.
Topographic amplification factors associated to cliff morphology:numerical results from two case-studies in Southern Italy and comparison with EC8 recommendations
PAGLIAROLI, Alessandro;
2007-01-01
Abstract
Seismic amplification of ground motion due to topographic effects at the Nicastro and Gerace cliffs (Calabria, Southern Italy) is investigated. Linear and non linear 2D numerical analyses are carried out on representative cross-sections using FLAC finite difference computer code. Additionally 1D analyses accounting only for stratigraphic effect are also carried out. A topographic amplification factor at the crest is then obtained taking the ratio of 2D over 1D horizontal peak acceleration and Fourier spectrum. The calculated amplification factors are compared with those recommended by EC8.File in questo prodotto:
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