| 摘要 |
The present invention relates to an underbody reinforcing structure capable of preventing deformation of a lower portion of a thin-plate structure and reinforcing the strength thereof. The underbody reinforcing structure includes a bulkhead made of a thin plate and a stiffener reinforcing the strength of the bulkhead. A flat bar is provided between an end flange of the stiffener and a main deck, and the flat bar is disposed along a longitudinal direction of a wall of the bulkhead, in the form of a metal strap having a thickness of 30 mm or less. Therefore, since the flat bar is provided between the end flange of the stiffener disposed at the bulkhead and the main deck, the flat bar has a bracket function and a stiffener function for reinforcing the lower portion, thereby preventing the deformation of the lower portion of the structure and reinforcing the strength. Also, since the flat bar increases the strength of the end portion of the stiffener to suppress the deformation of the bulkhead, the installation of a separate bracket and an underbody reinforcing member can be omitted. In particular, since a temporarily reinforcing member for preventing deformation which is installed to prevent damage to the hull due to welding work can be omitted, the number of members for reinforcing the lower portion of the structure is reduced and the productivity is improved. |
