The steel plates used for the superstructure of cruise ships are very thin,and there are many large openings on the side,so that the stiffness of the structure is very weak.It is easy to appear the damage phenomenon of the structure and out-fitting pieces during the block lifting.Aiming this problem,an evaluation process for the block lifting of cruise ship's superstruc-ture was put forward.Taking a block structure of a polar cruise ship as an example,the lifting plan was designed.By using finite element method,the structural stress,whole displacement and local displacement of the side openings were analyzed.The sensi-tivity of the lifting parameters was studied.The results showed that it is necessary to evaluate the local deformation for the side su-perstructure block,and it is the main control factor compared with the stress and whole deformation;the structural stress and the local deformation of the openings are more sensitive to the lifting eye arrangement,and the whole deformation is more sensitive to the temporary reinforcement.
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