Post damage assessment of the l' aquila, abruzzi april 6, 2009 earthquake

Abstract eng:
This paper reports on the damage observed after the recent April 6, 2009 earthquake that hit the city of L’Aquila, in the Abruzzi Region, in Italy. The main shock measured 6.3 on the moment magnitude scale. It was a rather superficial ground motion whose epicenter was very close to the downtown area, and caused severe damage and almost 300 deaths. The downtown area of L’Aquila, and of several minor centers around the main city, were severely damaged with several collapses of older masonry structures and monumental buildings. Collapses in reinforced concrete buildings not designed for seismic loads are documented. Extensive structural damage is reported in older buildings. The earthquake caused widespread nonstructural damage in new and older buildings. The damage is distributed with irregular patterns, suggesting large soil amplification effects. The first recordings show very high horizontal and vertical accelerations, which seem to confirm the above amplifications.

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