Out‐of‐plane seismic behaviour of rocking masonry walls |
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| Authors: | Omar Al Shawa Gianmarco de Felice Alberto Mauro Luigi Sorrentino |
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| Institution: | 1. Università degli Studi di Roma ‘La Sapienza’, Dipartimento di Ingegneria Strutturale e Geotecnica, , 00197 Roma, Italy;2. Università degli Studi Roma Tre, Dipartimento di Strutture, , 00146 Roma, Italy |
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| Abstract: | The evaluation of the out‐of‐plane behaviour of unreinforced walls is one of the most debated topics in the seismic assessment of existing masonry buildings. The discontinuous nature of masonry and its interaction with the remainder of the building make the dynamic modelling of out‐of‐plane response troublesome. In this paper, the results of a shaking table laboratory campaign on a tuff masonry, natural scale, U‐shaped assemblage (façade adjacent to transverse walls) are presented. The tests, excited by scaled natural accelerograms, replicate the behaviour of external walls in existing masonry buildings, from the beginning of rocking motion to overturning. Two approaches have been developed for modelling the out‐of‐plane seismic behaviour: the discrete element method and an SDOF analytic model. Both approaches are shown to be capable of reproducing the experimental behaviour in terms of maximum rotation and time history dynamic response. Finally, test results and numerical time history simulations have been compared with the Italian seismic code assessment procedures. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | discrete element method masonry rocking seismic behaviour shaking table tests |
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