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http://dx.doi.org/10.12989/sem.2020.74.4.481

Probabilistic seismic and fire assessment of an existing reinforced concrete building and retrofit design  

Miano, Andrea (Department of Structures for Engineering and Architecture, University of Naples Federico II)
de Silva, Donatella (Department of Structures for Engineering and Architecture, University of Naples Federico II)
Compagnone, Alberto (Department of Structures for Engineering and Architecture, University of Naples Federico II)
Chiumiento, Giovanni (Department of Structures for Engineering and Architecture, University of Naples Federico II)
Publication Information
Structural Engineering and Mechanics / v.74, no.4, 2020 , pp. 481-494 More about this Journal
Abstract
In this paper, a probability-based procedure to evaluate the performance of existing RC structures exposed to seismic and fire actions is presented. The procedure is demonstrated with reference to an existing old school building, located in Italy. The vulnerability assessment of the building highlights deficiencies under both static and seismic loads. Retrofit operations are designed to achieve the seismic safety. The idea of the work consists in assessing the performance of the existing and retrofitted building in terms of both the seismic and fire resistance. The seismic retrofit and fire resistance upgrading follow different paths, depending on the specific configuration of the building. A good seismic retrofit does not entail an improving of the fire resistance and vice versa. The goal of the current work is to study the variation of response due to the uncertainties considered in records/fire curves selection and to carry out the assessment of the studied RC structure by obtaining fragility curves under the effect of different records/temperature. The results show the fragility curves before and after retrofit operations and both in terms of seismic performance and fire resistance performance, measuring the percent improving for the different limit states.
Keywords
fragility curves; cloud analysis; multiple stripe analysis; fire resistance; seismic retrofit;
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Times Cited By KSCI : 4  (Citation Analysis)
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