Concrete Filled Steel Tubular Columns

Although modern design codes provide guides on concrete filled steel tubular members they do not cover their applications involving high strength concrete and high tensile steel.

Concrete filled steel tubular columns.

In a concrete filled steel tube cfst column the steel tube provides confinement to the concrete core which permits the composite action among the steel tube and the concrete. Concrete filled steel tubular cft columns have been used in many engineering structures such as bridges high rise buildings residential structures and other industrial structures. Nonlinear finite element analysis of circular concrete filled steel tube structures in struct. The cft columns can provide high capacity favorable ductility and large energy absorption capacity compared with the reinforced concrete structures.

They are composed of an outer steel tube with an inner h section steel member and concrete and are classified into concrete filled circular steel tubes with embedded internal h section steel h cfcsts and concrete filled rectangular steel tubes with embedded internal h section steel h cfrsts. Concrete filled steel tubular cfst columns are adopted in many structural applications especially for tall buildings bridges and large infrastructure due to their substantial structural and economic benefits. Concrete filled steel tubular cfts columns subjected to eccentric compressive load aip conference proceedings 2060 020004 2019.