Seismic fragility assessment of medium-rise fishbone-type reinforced concrete wall buildings

This paper presents a seismic fragility assessment of medium-rise reinforced concrete (RC) wall buildings, focusing on fishbone-type buildings with high densities and other features such as the presence thin unconfined walls subjected to axial loads significantly larger vertical irregularities. Such are typical residential in Chile countries. To do so, finite element models three index different levels load representing this class were developed using software DIANA. Nonlinear time-history analyses performed estimate engineering demand parameters (EDPs) for each building through multiple stripe analysis. Finding that existing component damage did not well capture these global local EDPs examined, recommending new limit states better aligned expected previously observed type capturing their critical characteristics (i.e., walls, loads, flag-shaped walls). study subsequently shows curves proposed states. The similar same building, whether or EDPs. On basis, it can be concluded either used reliably obtain analytical RC those considered paper.