Autors: Celi C. , Palacios P. , Suntaxi J.

Note: Upcoming in the subsequent years.

The study delves into estimating damage in specially-used structures, providing a succinct overview of methods for seismic evaluation in both fixed base and base-isolated buildings. We employ nonlinear analysis tools, adopting a probabilistic approach that utilizes parametric analysis fine-tuned to a lognormal distribution. The capacity spectrum methodology (CSM) is integral in deriving capacity curves. In advocating for the broader adoption of isolation systems in Ecuador—where, notably, they aren't mandated by construction codes—we model a representative 6-story structure. This structure is designed both with a fixed base and diverse base isolation configurations, incorporating LRB along with a range of geometric and mechanical property variations. We subsequently assess how these variations in mathematical models influence the building's superstructure performance.

The structure's nonlinear behavior is illustrated using capacity curves. These curves are then converted to fragility curves via direct static methods (MED). When determining the bounds of these capacity curves, we account for the inherent fragility of the lateral load-resisting system, acknowledging that numerical stability analyses might yield more conservative global ductility estimates. The analytical procedures and result compilations utilize Matlab and OpenSees software tools. Our findings are showcased in damage probability matrices, corresponding to seismic scenarios characterized by specific target displacements. In essence, this research seeks to bolster the comprehension and assessment of specially-used structures' performance, urging the broader integration of isolation systems within Ecuador.