Modelling and Seismic Response Analysis of Existing URM Structures. Part 2: Archetypes of Italian Historical Buildings

ABSTRACT

This work presents a comprehensive strategy for analysing the complex seismic response of five Italian historical URM buildings, corresponding to different periods until 1920s. One distinctive feature of historical buildings is the need for integrating global modelling and local response of structural portions, due to possible activation of local failure modes interacting with the overall dynamic building response. Global behaviour is analysed via pushover and dynamic analyses of 3D equivalent-frame models. An original approach is adopted for assessing local out-of-plane mechanisms, accounting for their dynamic response to input time histories, filtered by the global response of the 3D model.

KEYWORDS:

• Unreinforced masonry
• in-plane response
• out-of-plane mechanisms
• diaphragm damage
• equivalent frame models
• nonlinear dynamic analysis

Acknowledgments

The study presented in this article was developed within the activities of the ReLUIS-DPC and EUCENTRE-DPC 2019–2021 research programs, funded by the Presidenza del Consiglio dei Ministri—Dipartimento della Protezione Civile (DPC). Note that the opinions and conclusions presented by the authors do not necessarily reflect those of the funding entity. The authors thank Eng. Michele Candela for the data provided for setting the archetype of Building 6.

Disclosure Statement

No potential conflict of interest was reported by the author(s).