BEHAVIOR OF CFST TENSILE MEMBERS SUBJECTED TO CHLORIDE CORROSION

A finite element analysis (FEA) model for the concrete filled steel tubular (CFST) members subject to long-term axis tensile loading and chloride corrosion was established. In the FEA model, the influence of concrete shrinkage and creep as well as steel tube corrosion was considered, and the model was verified by test data. The model was then used to investigate the influence of a long-term axis tensile load and corrosion on the ultimate strength of CFST members. Comparisons with hollow steel tubes were also conducted. Meanwhile, the investigation on the full-range behavior and the load-transfer mechanism were carried out.