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Estimation of residual displacement ratios for simple structures built on soft-soil sites
AbstractSeismic demands computed from earthquake ground motions recorded at soft soil sites have shown different spectral trends with respect to those computed from earthquake ground motions gathered from accelerographic stations placed on firm sites. Therefore, an examination of the spectral trend of residual displacement ratios, Cr, which allow the direct estimation of lateral residual displacement demands from their maximum linear elastic demands, for elastoplastic single-degree-of-freedom systems subjected to earthquake ground motions recorded at soft soil sites of the lake-bed of Mexico City and the San Francisco Bay Area is presented in this technical note. A functional form to obtain estimates of mean residual displacement ratios for this type of sites is introduced and its ability to capture the empirical spectral trend of Cr is illustrated in this paper.
HighlightsSpectral trend of residual displacement ratios for soft soil sites is very different from those for firm soil sites.Residual displacement ratios significantly decrease for normalized periods of vibrations close to the predominant period of the ground motion.An equation to obtain mean Cr ratios for soft soil sites is proposed.
Estimation of residual displacement ratios for simple structures built on soft-soil sites
AbstractSeismic demands computed from earthquake ground motions recorded at soft soil sites have shown different spectral trends with respect to those computed from earthquake ground motions gathered from accelerographic stations placed on firm sites. Therefore, an examination of the spectral trend of residual displacement ratios, Cr, which allow the direct estimation of lateral residual displacement demands from their maximum linear elastic demands, for elastoplastic single-degree-of-freedom systems subjected to earthquake ground motions recorded at soft soil sites of the lake-bed of Mexico City and the San Francisco Bay Area is presented in this technical note. A functional form to obtain estimates of mean residual displacement ratios for this type of sites is introduced and its ability to capture the empirical spectral trend of Cr is illustrated in this paper.
HighlightsSpectral trend of residual displacement ratios for soft soil sites is very different from those for firm soil sites.Residual displacement ratios significantly decrease for normalized periods of vibrations close to the predominant period of the ground motion.An equation to obtain mean Cr ratios for soft soil sites is proposed.
Estimation of residual displacement ratios for simple structures built on soft-soil sites
Ruiz-García, Jorge (author) / Guerrero, Héctor (author)
Soil Dynamics and Earthquake Engineering ; 100 ; 555-558
2017-07-08
4 pages
Article (Journal)
Electronic Resource
English
Estimation of residual displacement ratios for simple structures built on soft-soil sites
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