The wind tunnel tests of wind pressure acting on the derrick of deepwater semi-submersible drilling platform

Abstract The increasing importance of the sustainability challenge in ocean engineering has led to the development of floating ocean structure. In this study, according to the 1/100 scale model of the HYSY-981 semi-submersible platform, the investigation on the wind resistant properties of the platform is measured through wind tunnel tests. The wind pressure coefficients of the derrick in 0∼90°wind directions were obtained by calculation. The distribution of the wind pressures on windward side of the derrick was studied. These results may serve as a reference on the design for wind loads acting on the platform.