The present invention relates to an offshore structure with a reinforcement structure. More specifically, the offshore structure with a reinforcement structure enables to dispose many equipment on a main deck by extending the space of the main deck instead of a restricted deck box, to improve the accessability and working environment of an operator, to contribute to reduce a weight by replacing the deck box with a trussed structure in an iron plate structure, to lower the vertical center of gravity (VCG) of the entire structure, to reduce a wave load and drag force by which the sea wave is influenced by replacing a columnar structure with the trussed structure, to relatively reduce the size of the column by dispersing the load to be applied to the structure by the addition of the trussed structure, and to be utilized to dispose the trussed structure of the lower part of the main deck in a pipe. The offshore structure with a reinforcement structure according to the present invention comprises: a pontoon forming buoyancy; the column which is numerously installed in order to be extended upward from the pontoon; the main deck installed on the column; a horizontal truss installed to be horizontal to the upper portion of the column in order to support the main deck; and a perpendicular truss which is fixated to the pontoon and installed to be vertical in order to support the horizontal truss.;COPYRIGHT KIPO 2015
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