000019051 001__ 19051
000019051 005__ 20170118182257.0
000019051 04107 $$aeng
000019051 046__ $$k2017-01-09
000019051 100__ $$aLudovico, Marco Di
000019051 24500 $$aSeismic Loss Assessment Based on Real Repair/Retrofit Costs

000019051 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019051 260__ $$b
000019051 506__ $$arestricted
000019051 520__ $$2eng$$aRecent seismic events confirmed the high vulnerability of existing buildings and highlighted the importance to quantify the attained losses and optimize the economic resources in the reconstruction phases. According to modern seismic design standards, damage to structural and non-structural elements are expected during the design-level seismic event. However, the building reparability and the associated costs should be evaluated in detail. This aspect is even more relevant considering that existing building may experience significant nonstructural damage after medium-to-low intensity (short return period) seismic events. Thus, nowadays, the challenge of a comprehensive seismic assessment is the estimation of the earthquake-induced losses, including the “3Ds”, death, dollars and downtime. Expected losses need to be considered in the retrofit design process and can be a selective criteria to identify the proper strategy and technical solution. According to these evidences, several refined or simplified approaches have been proposed in literature and they are currently under developments. Although they use rigorous methodologies, the predicted overall repair costs may require further validations. The recent seismic events represented the occasion for monitoring and collecting the direct repairing costs and real downtimes related to massive reconstruction processes (e.g. L’Aquila, 2009 and Christchurch, 2011). This paper presents a comparison of the predicted repair costs with the actual costs collected in the L’Aquila reconstruction process. The adopted methodology is described in detail and applied to case study reinforced concrete (RC) private residential buildings damaged by the L’Aquila earthquake. Refined numerical models have been developed to properly assess the seismic performances of structural and non-structural components. The predicted damage scenario well reproduce what observed during the aftermath surveys. The ATC-58 (2012) procedure, along with the recent upgrades in the fragility database, has been adopted to estimate the repair costs. The predictions are closely compared with actual repair costs grouped in meaningful categories of similar components. Similarities and differences are discussed. Further improvements to extend the adopted methodology to the Italian building stock are suggested.

000019051 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019051 653__ $$aActual repair cost, ATC-58, RC buildings, loss assessment, seismic performance.

000019051 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019051 720__ $$aLudovico, Marco Di$$iPampanin, Stefano$$iProta, Andrea$$iVecchio, Ciro Del
000019051 8560_ $$ffischerc@itam.cas.cz
000019051 8564_ $$s451912$$uhttps://invenio.itam.cas.cz/record/19051/files/2754.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2754.
000019051 962__ $$r16048
000019051 980__ $$aPAPER