Evaluation of seismic damage in low-rise buildings of reinforced concrete masonry
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The assessment of damage caused by earthquakes in structures, requires the use of nonlinear analysis, either static or dynamic, in order to define the performance of the buildings for the considered hazard levels. In this paper, different damage models based on static and dynamic nonlinear analysis are used in the evaluation of a lowrise building with reinforced concrete masonry, which is the main structural material used in Costa Rica. The fragility curves and the mean damage index are defined from the static nonlinear analysis. The Park&Ang index is also obtained as a global damage index when the dynamic nonlinear analysis is performed. Damage is then described with discrete damage states and, for each damage state, displacement thresholds are defined. Finally, a Park&Ang compatible damage curve is obtained as a combination of the secant stiffness degradation and the plastic displacement energy curves, all obtained from the capacity curve obtained with Pushover analysis.
CitacióHidalgo-Leiva, D., Pujades, L.G., Barbat, A. H., Díaz-Alvarado, S., Vargas, Y.F. Evaluation of seismic damage in low-rise buildings of reinforced concrete masonry. A: International Workshop on Seismic Microzoning and Risk Reduction. "11th IWSMRR: Proceedings of the 11th International Workshop on Seismic Microzoning and Risk Reduction". Granada: 2016, p. 125-132.