| 摘要 |
The present invention relates to a hollow concrete-filled girder and a manufacturing method thereof, enabling a bond between a tube and concrete filled inside the tube to be closed by centrifugally forming a concrete-filled girder, and binding a hollow filled concrete inside the tube by the tube, a PC steel wire, and a spiral steel wire in the inside and the outside by maximizing a binding effect for concrete to improve a flexible force of the concrete-filled girder and reduce a flexible force generated in a girder by the weight of the girder. Moreover, a reinforcing rib protruding inside the tube maximizes the rigidity to a flexible force for stable use. |
