Usually, columns are the key load bearing elements in concrete frame structures. They are typically weak, not to long distance explosive loadings, but to short distance loadings. In this study, the effect of blast loadings occurring within a short distance was examined analytically. Various aspect ratios of column sections with the same sectional area and reinforcement ratio were considered as variables in order to evaluate damage levels. It was found that ratio of residual strength to nominal axial strength of columns decreased as contact area of column to the blast loading became smaller.

• 최호순(경희대학교 건축공학과, 석사과정) | Choi, Hosoon
• 김희철(경희대학교 건축공학과 교수, 공학박사) | Kim, Heecheul
• 이영학(경희대학교 건축공학과 교수, 공학박사) | Lee, Young Hak 교신저자