Gantry crane is used frequently in the dock. How to reduce the number of lifting and improve construction efficiency are given more attention by shipyard. According to site and equipment conditions of a shipyard, a tooling which is used for the large blocks lifted is designed to improve construction efficiency. Moreover, the processes of lifting the large blocks are described. Tooling structure strength is checked by FEM. And the influence of different rails arrangement for tooling structure is analyzed. The successful tooling design plan is of great significance for improving construction efficiency, reducing building period and saving construction cost.

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