| 摘要 |
The present invention relates to a concrete filled synthetic tube casting concrete inside while arranging steels in a peripheral portion of a cross section comprising: a first side steel in a plate shape; a second side steel in a plate shape where one side is vertically combined on the other side of the first side steel; a third side steel in a plate shape where one side is vertically combined on the other side of the second side steel while facing the first side steel; a fourth side steel in a plate shape where one side is vertically combined on the other side of the third side steel while facing the second side steel, and where the other side is vertically combined on the side of the first side steel; and edge portions where at least one pair, facing each other, among the first side steel, the second side steel, the third side steel, and the fourth side steel is bent toward the inside of a tube on both sides. According to the present invention, the concrete filled synthetic tube can improve structural efficiency and a resistance force by concentrating the steels in edges of the tube. |
