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Structural Engineering and Mechanics Volume 68, Number 4, November25 2018 , pages 423-442 DOI: https://doi.org/10.12989/sem.2018.68.4.423 |
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In-plane response of masonry infilled RC framed structures: A probabilistic macromodeling approach |
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Dario De Domenico, Giovanni Falsone and Rossella Laudani
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| Abstract | ||
| In this paper, masonry infilled reinforced concrete (RC) frames are analyzed through a probabilistic approach. A macro-modeling technique, based on an equivalent diagonal pin-jointed strut, has been resorted to for modelling the stiffening contribution of the masonry panels. Since it is quite difficult to decide which mechanical characteristics to assume for the diagonal struts in such simplified model, the strut width is here considered as a random variable, whose stochastic characterization stems from a wide set of empirical expressions proposed in the literature. The stochastic analysis of the masonry infilled RC frame is conducted via the Probabilistic Transformation Method by employing a set of space transformation laws of random vectors to determine the probability density function (PDF) of the system response in a direct manner. The knowledge of the PDF of a set of response indicators, including displacements, bending moments, shear forces, interstory drifts, opens an interesting discussion about the influence of the uncertainty of the masonry infills and the resulting implications in a design process. | ||
| Key Words | ||
| RC frames; masonry infills; macro-modeling approaches; probability transformation method; probability density function; probability-based design | ||
| Address | ||
| Dario De Domenico, Giovanni Falsone and Rossella Laudani: Department of Engineering, University of Messina, Contrada Di Dio, 98166 Sant\'Agata, Messina, Italy | ||