Abstract

GONZALEZ HERRERA, Raúl et al. Site Effect in Tuxtla Gutiérrez, Chiapas, A Determinant in the Historical Damages in Buildings. Ing. sísm [online]. 2020, n.102, pp.42-64.  Epub Oct 07, 2020. ISSN 0185-092X.  https://doi.org/10.18867/ris.102.511.

On September 7th, 2017, occurred the last earthquake that caused severe damages in the city of Tuxtla Gutiérrez, Chiapas. The evaluation of structural damages together with those observed on the most important earthquakes in the region (April 7th, 2011, October 21st, 1995 and September 23rd, 1902) and locating the damage by means of a Geographical Information System, it was observed that despite those structural systems associated with damaged buildings were similar on all the urban area, the damage was concentrated in specific areas of the city. The investigation tried to explain the causes of those damages, finding that the most determining reason for earthquake damage is the site effect present in the soils of the Tuxtla Valley, which have amplifications up to three times the acceleration of the earthquake in rock determined by records of historical earthquakes.

Keywords : site effect; earthquake damage; damage correlation; amplification in soft soils; seismic hazard.

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