Deformation of Longitudinal Beam of End Plate for Integral Salvage of Ancient Ships

Abstract

For the integral salvage project of ancient sunken ships, the distributed optical fiber sensing technology is used instead of conventional deformation monitoring methods to monitor the deformation of the longitudinal beam and end plate during the overall lowering process of the “end plate longitudinal beam” frame. The monitoring results show that during the entire process of lowering the “end plate longitudinal beam”, the deformation of the end plate is controlled within 1.5 mm, and the deformation amount can be ignored. Due to the friction between the positioning pile and the “end plate longitudinal beam”, the maximum deformation of the longitudinal beam is 50 mm. Grinding and cutting the positioning pile can effectively reduce the deformation of the longitudinal beam, and the final deformation of the longitudinal beam is about 35 mm.

Keywords

• wreck
• optical fiber monitoring
• integral salvage
• deformation monitoring