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The concrete-filled steel tubular (CFST) structure offers numerous structural benefits, including high strength and fire resistances, favorable ductility and large energy absorption capacities. There is also no need for the use of shuttering during concrete construction; hence, the construction cost and time are reduced. These advantages have been widely exploited and have led to the extensive use of concrete-filled tubular structures in civil engineering structures. In the existing dozens of species types of stainless steel, some are suitable for concrete-filled steel tubular, some not. In this paper, the principles for selection of such types are studied, by both quantum mechanism and molecular dynamic method.

First-principle and molecular dynamic calculation of concrete-filled steel tubular to introduce stainless steel technology