Analytical Study on the Fire Resistance of Internally Confined Hollow CFT Column

摘要: A column resisting axial load and seismic is one of the main members in a structural system. The heated by event fire can lose its strength it may damage system or cause collapse entire In this study, resistance capacity internally confined hollow concrete filled tube (ICH CFT) was investigated. an ICH CFT column, yield external important as (CFT) because confines depends on effect. study performed finite element analyses considering effect material nonlinearity temperature changes fire. ratio, thickness tube, were selected parameters for analyses. using commercial FEA program (ABAQUS) nonlinear model program. analysis results showed that ratio mainly affect column.