Modelling and Seismic Response Analysis of Italian Pre-Code and Low-Code Reinforced Concrete Buildings. Part II: Infilled Frames

ABSTRACT

This study investigates the seismic response of archetype infilled reinforced concrete buildings representative of the existing Italian residential building stock by focusing on the modelling aspects of the existing infills, including their failure modes and interaction with the frame. The study compares the seismic response of the considered buildings, investigated through nonlinear static and dynamic analysis, with reference to two Performance Levels. The main variables considered are the construction period, the site hazard, the number of stories and the infill configuration. The observed return period capacity of the buildings mainly depends on the site hazard and on the construction period.

KEYWORDS:

• Nonlinear static analysis
• nonlinear dynamic analysis
• global collapse
• usability-preventing damage
• masonry infill panels
• in-plane
• out-of-plane
• infill–frame interaction

Acknowledgments

The study presented in this article was developed within the activities of the ReLUIS-DPC and DPC 2019–2021 research programs, funded by the Presidenza del Consiglio dei Ministri—Dipartimento della Protezione Civile (DPC). The opinions and conclusions presented by the authors do not necessarily reflect those of the funding agency.

Disclosure Statement

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

Additional information

Funding

This work was supported by the Dipartimento della Protezione Civile, Presidenza del Consiglio dei Ministri.