Abstract
Marine structures are usually built on land as a whole modular, using barges to transport to the designated area for installation. This paper presents the sea-fastening design methodology and results of the topside module which is to be transported by self-propelled barge. The combination of its self-weight, wind load and barge acceleration in waves will act on the topside module and barge in the process of marine transportation, this paper mainly analyzes and calculates the temporary support frame and the grillage members of the topside module by SACS software. Then the top plates and the base plates transmit the member end forces of sea-fastening grillage members taken from SACS output, in order to ensure the strength, the bracket plates are welded to the grillage columns, braces and the bottom of temporary support frame. The strength of all fillet welds shall be checked.
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