STEEL BEAM AND STEEL-CONCRETE HYBRID STRUCTURE USING A FOLDED STEEL PLATE FOR IMPROVED TENSILE STRENGTH

摘要

A steel sheet molding steel beam for the tension enforcement and a steel structure - concrete composite structure using the same are provided to improve the tensile proof stress with a double steel structure cross section. A steel sheet molding steel beam for the tension enforcement comprises a pair of half plate girder(110) The half plate girder consecutively molds one steel to be curve-cut. The half plate girder comprises an upper horizontal plate(111), a center vertical plate(112), a lower horizontal plate(113), a side vertical plate(114), a middle horizontal plate(115) and a vertical reinforcing plate(116). The center vertical plate is curved to the bottom side at the end part of the upper horizontal plate. The lower horizontal plate is curved to the same direction with the upper horizontal plate at the end part of the center vertical plate. The side vertical plate is curved to the upper direction at the end part of the lower horizontal plate. The middle horizontal plate is curved toward the center vertical plate at the end part of the side vertical plate. The vertical reinforcing plate is curved along the surface of the center vertical plate upward at the end part of the middle horizontal plate.