Masonry infilled R/C buildings present a number of complexities inherent to inplan eccentricities and asymmetric layout of infills. Their dynamic earthquake response cannot generally be characterized in terms of principal directions of deflection as for plan-regular structures. The response is then complicated by nonlinear frame-infill interaction, which makes the resulting collapse mechanism particularly sensitive to local shear failures. A three-dimensional nonlinear model is developed incorporating frame elements, eccentric infill struts, and shear-prone short columns. Results from nonlinear Response History Analyses (RHA) changing the earthquake incidence are analyzed starting from Graphic-Dynamic modal torsional trends and directional inelastic response envelopes. Directional Incremental Dynamic Analyses (IDA) and Uncoupled Modal Response History Analyses (UMRHA) over a range of hazard levels (OP, DL, SD, NC) highlight the polarization of the elastic and inelastic modal response.
Significance of earthquake incidence on response of plan-irregular infilled R/C buildings / Faggella, Marco; Mezzacapo, G.; Gigliotti, Rosario; Spacone, E.. - II:(2015), pp. 3809-3815. (Intervento presentato al convegno 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015 tenutosi a Creta Maris Conference Centre, grc nel 2015).
Significance of earthquake incidence on response of plan-irregular infilled R/C buildings
FAGGELLA, Marco
;GIGLIOTTI, Rosario;
2015
Abstract
Masonry infilled R/C buildings present a number of complexities inherent to inplan eccentricities and asymmetric layout of infills. Their dynamic earthquake response cannot generally be characterized in terms of principal directions of deflection as for plan-regular structures. The response is then complicated by nonlinear frame-infill interaction, which makes the resulting collapse mechanism particularly sensitive to local shear failures. A three-dimensional nonlinear model is developed incorporating frame elements, eccentric infill struts, and shear-prone short columns. Results from nonlinear Response History Analyses (RHA) changing the earthquake incidence are analyzed starting from Graphic-Dynamic modal torsional trends and directional inelastic response envelopes. Directional Incremental Dynamic Analyses (IDA) and Uncoupled Modal Response History Analyses (UMRHA) over a range of hazard levels (OP, DL, SD, NC) highlight the polarization of the elastic and inelastic modal response.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
