6ACI 318-99 Building code' requirements for structural concrete and commentary [ S ]. Detroit: Amcrican Concrete Institute, 1999
7AIJ 1997. Recommendations for design and construction of concrete filled steel tubular structures [ S ]. Tokyo : Architcctural Institute of Japan( AIJ), 1997
8Eurocode 4. Design of composite steel and concrete struetures,Part1-1:General rules and rules for buildings [ S]. London: British Standards Institution, 1994