In the last years, a growing attention has been devoted to the seismic vulnerability assessment of existing Reinforced Concrete (RC) framed buildings designed only for gravitational loads. The seismic behavior of existing framed buildings with an inner RC stairwell core has been investigated much less so far, even if this structural typology has known a certain spread from the Seventies onwards, especially in the Italian largest urban areas. In this work, the seismic behavior a relevant and representative example of existing pre-code RC core medium rise building is evaluated by performing nonlinear pushover analyses. The effect of different modelling assumptions regarding the degree of collaboration between frames and RC walls on the structural response is discussed. The influence of masonry infills on the global structural response is also evaluated by running the analyses both on the bare structure and on a structural model considering a distribution of masonry panels not regular in elevation: the latter distribution corresponds to a typical situation for the considered typology.

EVALUATION OF THE SEISMIC VULNERABILITY OF EXISTING PRE-CODE RC CORE STRUCTURAL SYSTEMS THROUGH NON-LINEAR PUSHOVER ANALYSES / Belletti, B.; Martinelli, E.; Michelini, E.; Vecchi, F.. - ELETTRONICO. - 1:(2021), pp. 1027-1038. ((Intervento presentato al convegno 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2021) tenutosi a streamed online from Athens nel 28-30 June 2021.

EVALUATION OF THE SEISMIC VULNERABILITY OF EXISTING PRE-CODE RC CORE STRUCTURAL SYSTEMS THROUGH NON-LINEAR PUSHOVER ANALYSES

B. Belletti
;
E. Michelini;F. Vecchi
2021

Abstract

In the last years, a growing attention has been devoted to the seismic vulnerability assessment of existing Reinforced Concrete (RC) framed buildings designed only for gravitational loads. The seismic behavior of existing framed buildings with an inner RC stairwell core has been investigated much less so far, even if this structural typology has known a certain spread from the Seventies onwards, especially in the Italian largest urban areas. In this work, the seismic behavior a relevant and representative example of existing pre-code RC core medium rise building is evaluated by performing nonlinear pushover analyses. The effect of different modelling assumptions regarding the degree of collaboration between frames and RC walls on the structural response is discussed. The influence of masonry infills on the global structural response is also evaluated by running the analyses both on the bare structure and on a structural model considering a distribution of masonry panels not regular in elevation: the latter distribution corresponds to a typical situation for the considered typology.
978-618-85072-3-4
EVALUATION OF THE SEISMIC VULNERABILITY OF EXISTING PRE-CODE RC CORE STRUCTURAL SYSTEMS THROUGH NON-LINEAR PUSHOVER ANALYSES / Belletti, B.; Martinelli, E.; Michelini, E.; Vecchi, F.. - ELETTRONICO. - 1:(2021), pp. 1027-1038. ((Intervento presentato al convegno 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2021) tenutosi a streamed online from Athens nel 28-30 June 2021.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2901179
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