Residual strength of reinforced concrete columns subjected to blast loading

摘要: Failure modes of concrete structures due to blast load vary according the point detonation, stand-off distance and TNT charge weight. Usually, columns are key load-bearing elements in frame structures. They typically weak, not long-distance explosive loadings, but short-distance loadings. The effect loadings occurring within a short was examined analytically this study. Scaled (which considers both weight), various aspect ratios column sections with same sectional area reinforcement ratio, arrangements longitudinal reinforcements ratio were considered as variables order evaluate damage levels define relations among these respect residual strength after blast. Autodyn used for finite-element analysis. It found that nominal axial col...