Bulletin of Earthquake Engineering

, Volume 9, Issue 1, pp 263–283

Far field damage on RC buildings: the case study of Navelli during the L’Aquila (Italy) seismic sequence, 2009

  • M. Mucciarelli
  • M. Bianca
  • R. Ditommaso
  • M. R. Gallipoli
  • A. Masi
  • C. Milkereit
  • S. Parolai
  • M. Picozzi
  • M. Vona
Original Research Paper

Abstract

After the recent Central Italy Earthquake of the 6th April 2009 (Mw = 6.3), the Italian and German engineer and geophysicist Task Force carried out a wide characterization of sites, buildings and damages. In Navelli, a town about 35 km far from epicentre, heavy damage occurred on a reinforced concrete (RC) building that represent an anomalous case of damage, when compared with those occurred in the neighbouring area. In this paper, characterization of the site and damage of the Navelli RC Building is reported and discussed. We performed ambient noise and strong motion measurements, installing one three-directional accelerometer on each floor of the structure and two in free-field, and we have carried out repeated measurements using a couple of three-directional tromometers. In the mean time, a geological survey was carried out and the site response was investigated, with the aid of down-hole measurements. It was thus possible to investigate the structural response and damage taking into account site condition. One of the main results of this work is that repeating analyses using ambient noise measurements show that the main structural frequencies reached after the first damaging shock are constant over time, and then the structural behaviour appears stationary at long term. On the other hand, the strong motion recordings show that the building exhibits a transient non-stationary behaviour as the fundamental frequency changes during each aftershock, then returning to the starting value after each event.

Keywords

Earthquake damage L’Aquila earthquake Strong motion Site effects Building vulnerability Building monitoring 

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • M. Mucciarelli
    • 1
  • M. Bianca
    • 1
  • R. Ditommaso
    • 1
  • M. R. Gallipoli
    • 2
  • A. Masi
    • 1
  • C. Milkereit
    • 3
  • S. Parolai
    • 3
  • M. Picozzi
    • 3
  • M. Vona
    • 1
  1. 1.Department of Structures, Geotechnics, Engineering GeologyUniversity of BasilicataPotenzaItaly
  2. 2.IMAA-CNRTito ScaloItaly
  3. 3.Deutsches GeoForschungs Zentrum GFZ, Section 2.1PotsdamGermany

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