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http://dx.doi.org/10.12989/eas.2014.7.6.1241

Response of structures to seismic sequences corresponding to Mexican soft soils  

Diaz-Martinez, Gerardo (Depto. de Materiales, Universidad Autonoma Metropolitana-Azcapotzalco)
Ruiz-Garcia, Jorge (Facultad de Ingenieria Civil, Universidad Michoacana de San Nicolas de Hidalgo)
Teran-Gilmore, Amador (Depto. de Materiales, Universidad Autonoma Metropolitana-Azcapotzalco)
Publication Information
Earthquakes and Structures / v.7, no.6, 2014 , pp. 1241-1258 More about this Journal
Abstract
This is paper presents the results of an analytical study aimed at evaluating the effect of narrow-banded mainshock/aftershock seismic sequences on the response of structures built on very soft soil sites. Due to the scarce availability of recorded seismic sequences in accelerographic stations located in the lake-bed of Mexico City, artificial narrow-banded sequences were employed. In the first part of this study, a parametric investigation was carried out to identify the mainshock/aftershock ground motion features that have detrimental effects in the seismic performance of equivalent single-degree-of-freedom systems representative of framed-buildings that house standard and essential facilities. In the second part of this work, the seismic response of two (8- and 18-story) steel-moment resisting frames that house essential facilities is examined. It is concluded that buildings with fundamental periods of vibration longer than the dominant period of the mainshock can experience a significant increment in their inter-story drift demands due to the occurrence of an aftershock.
Keywords
seismic sequences; displacement-based design; soft soils; performance-based design;
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Times Cited By KSCI : 1  (Citation Analysis)
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