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 tube cfst columns with internal h section steel h cfst are a new type of structural component. 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 cft columns have been used in many engineering structures such as bridges high rise buildings residential structures and other industrial structures.

Concrete filled steel tubular cfts columns subjected to eccentric compressive load aip conference proceedings 2060 020004 2019. However the design guidelines for cfst columns with high strength materials and slender sections are still limited. Nonlinear finite element analysis of circular concrete filled steel tube structures in struct.