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Effect of the variability in plan of concrete mechanical properties on the seismic response of existing RC framed structures

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Abstract

A proper characterization of concrete strength is essential to correctly model existing RC structures, whose seismic performance is affected by the poor quality of materials. The purpose of this work is to evaluate the effect of incorrect assumptions for concrete strength and the adequacy of current Codes provisions (Eurocodes, FEMA). Even the effects of the non homogeneity of concrete strength within the building is considered due to its high variability; in fact, buildings can experience an irregular seismic response, both in plan and in elevation. In this work the effects of irregularity in plan due to the strength variability of concrete is analyzed on a case study, a four storey RC framed building, designed for vertical loads only. The variability of concrete strength has been evaluated using the data of an extensive investigation developed by REGIONE TOSCANA on a large sample of RC framed buildings.

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Acknowledgments

This work has been supported by the project DPC-ReLUIS 2010/2013 Task 1.1.2. “Strutture in cemento armato ordinarie e prefabbricate”.

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Authors and Affiliations

  1. Department of Constructions and Restoration (DiCR), University of Florence, Florence, Italy

    M. De Stefano, M. Tanganelli & S. Viti

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  1. M. De Stefano
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  2. M. Tanganelli
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  3. S. Viti
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Correspondence to S. Viti.

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De Stefano, M., Tanganelli, M. & Viti, S. Effect of the variability in plan of concrete mechanical properties on the seismic response of existing RC framed structures. Bull Earthquake Eng 11, 1049–1060 (2013). https://doi.org/10.1007/s10518-012-9412-5

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  • DOI: https://doi.org/10.1007/s10518-012-9412-5

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