Analysis of Concrete-encased CFST Stub Columns under Axial Compression after Exposure to Fire

Abstract

Abstract-This paper presents the behavior of concrete-encased CFST stub columns under axial compression after exposure to fire from both experiment and numerical analysis. ABAQUS is used to develop a finite element analysis (FEA) model to investigate the performance of the composite columns after exposure to fire. Two groups (10 specimens) of concreteencased CFST stub columns with different CFST ratio and fire duration time were tested. The FEA model was verified by comparison with test results. The work of this paper provides a reference for further theoretical study on concrete-encased CFST stub columns after exposure to fire.