Analysis of the Out-Of-Plane Seismic Behavior of Unreinforced Masonry: A Literature Review

Ferreira, Tiago Miguel; Costa, Alexandre A.; Costa, Aníbal

http://hdl.handle.net/10400.22/7612

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Authors

Ferreira, Tiago Miguel

Costa, Alexandre A.

Costa, Aníbal

Abstract(s)

Although the issue of the out-of-plane response of unreinforced masonry structures under earthquake excitation is well known with consensus among the research community, this issue is simultaneously one of the more complex and most neglected areas on the seismic assessment of existing buildings. Nonetheless, its characterization should be found on the solid knowledge of the phenomenon and on the complete understanding of methodologies currently used to describe it. Based on this assumption, this article presents a general framework on the issue of the out-of-plane performance of unreinforced masonry structures, beginning with a brief introduction to the topic, followed by a compact state of art in which the principal methodologies proposed to assess the out-of-plane behavior of unreinforced masonry structures are presented. Different analytical approaches are presented, namely force and displacement-based, complemented with the presentation of existing numerical tools for the purpose presented above. Moreover, the most relevant experimental campaigns carried out in order to reproduce the phenomenon are reviewed and briefly discussed.