A component-level methodology to evaluate the seismic repair costs of infills and services for Italian RC buildings
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A component‑level methodology to evaluate the seismic repair costs of infills and services for Italian RC buildings Maria Teresa De Risi1 · Carlo Del Gaudio1 · Gerardo Mario Verderame1 Received: 11 April 2020 / Accepted: 25 August 2020 © The Author(s) 2020
Abstract The reliable estimation of seismic losses due to damage to buildings is paramount for the post-emergency management and the planning of recovery activities. For residential reinforced concrete (RC) infilled buildings, a significant role in the computation of seismic loss is played by non-structural components, above all infills, partitions and services, as shown in past earthquakes. In this work, a component-based methodology is proposed to assess seismic losses for residential RC buildings in Mediterranean region. The attention is focused on the repairing activities for masonry infills (typical enclosure or partitions elements in Italian and Mediterranean RC buildings), and for services (plumbing systems, electric equipment, floor/wall tiles…), commonly enclosed within the infill panels for the considered building typology. The described methodology can be used starting from the expected damage level to infills and partitions. It adopts given repair unit costs at different damage states of infills. The loss estimation methodology has been, first, validated by comparing predicted and actual repair costs for specific case-study buildings damaged by L’Aquila (Italy) 2009 earthquake. Then, the methodology has been applied to a wide dataset of RC buildings (about 2500 residential buildings) damaged by L’Aquila earthquake available from the literature, to show its possible application at a large-scale level. A good agreement between observed and predicted costs is obtained both for specific case-study buildings and for the wider building stock, especially when damage to structural components is very limited. Keywords RC building · Masonry infill and partition · Damage assessment · Postearthquake survey · Seismic repair cost · L’Aquila earthquake
Maria Teresa De Risi: beneficiary of an AXA Postdoctoral Research Fund. * Carlo Del Gaudio [email protected] Maria Teresa De Risi [email protected] Gerardo Mario Verderame [email protected] 1
Department of Structures for Engineering and Architecture, University of Naples Federico II, via Claudio 21, 80125 Naples, Italy
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Vol.:(0123456789)
Bulletin of Earthquake Engineering
1 Introduction The high seismicity, combined with the significant exposure, makes Italy one of the countries where the consequences of earthquakes are more devastating than elsewhere. Dolce et al. (2019a) estimate that the earthquakes with magnitude between 5.5 and 6.9, occurred in Italy from 1976 to 2012, caused monetary losses for over €150 billion, due to recovery and reconstruction costs. In addition, Italian buildings inventory is characterized by strong deficiencies, being generally constructed before the enacting of seismic codes. Similar issues should be face up in many other seismic prone areas in the Medit
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