Journal
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
Volume 63, Issue -, Pages 56-68Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.soildyn.2014.03.008
Keywords
Aftershocks; Seismic sequences; Frequency content; Peak drift demands; Residual drift demands
Funding
- National Council for Science and Technology in Mexico [CB-2008-102721]
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On September 19 and 20, 1985, two strong subduction interface earthquakes struck Mexico City leading to a large stock of damaged, or even collapsed, reinforced concrete (RC) building structures located in soft soil sites of the former lake-bed zone. The aim of this study is to gain further understanding on the effects of soft-soil seismic sequences on the seismic response of RC framed-buildings. This investigation employed artificial sequences since only two real sequences were gathered during the 1985 earthquakes. The nonlinear response, in terms of peak and residual lateral inter-story drift demands of four RC buildings having 4, 8, 12, and 16 stories, was evaluated. Results show that the relationship of the damaged period of the building (i.e. period of the building after the mainshock) to the predominant period of the aftershock, which is a measure of its frequency content, has a significant impact in the building response. (C) 2014 Elsevier Ltd. All rights reserved.
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