Displacement-Based Simplified Seismic Loss Assessment of Pre-70S RC Buildings

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ABSTRACT

A Displacement-Based framework for the Simplified Seismic Loss Assessment of pre-70 RC buildings is presented. The attention is focused on the calculation of the Expected Annual Loss using results of traditional structural analyses within a closed-form expression. Comparisons with conventional approach proposed in the Italian guidelines for seismic classification, and rigorous probabilistic seismic performance assessment presented in FEMA-P85 are made for a number of case-studies. Results show that the proposed method performs better than the conventional approach and is aligned with the rigorous method, with errors less than 20%. Finally, preliminary considerations on how to incorporate indirect losses are made.

KEYWORDS:

• Performance-based earthquake engineering
• seismic performance assessment
• expected annual loss
• simplified loss assessment
• reinforced concrete buildings
• direct and indirect losses

Acknowledgments

This work has been carried out within the Line 7 of the ReLUIS/DPC 2014-2018 research program, dealing with Displacement-based approaches for the evaluation of seismic losses of buildings in pre- and post-rehabilitation conditions. The authors gratefully acknowledge the support of the RELUIS Consortium for this research.