Three-dimensional steel fiber, manufacturing mold and method and concrete applying three-dimensional steel fiber

The invention provides a three-dimensional steel fiber which is characterized in that the three-dimensional steel fiber is composed of a plurality of arc sections and linear sections, the linear sections in the X-axis direction are connected with the linear sections in the Y-axis direction and the linear sections in the Z-axis direction through the two arc sections respectively, and a main body part is formed. In order to improve anchoring of the fiber in the base body, anchoring sections can be arranged at the two ends of the fiber, each anchoring section can be composed of one or more continuously-arranged end hooks, and each end hook is composed of one large arc section and one linear section. The SIFCON is a steel fiber with a three-dimensional size, three-dimensional distribution can be effectively formed in a mold no matter how a feeding process is adopted, so that the prepared SIFCON can play a good resisting role no matter in which direction the SIFCON is stretched or compressed, the bonding strength