基金Supported by Special Project for innovation for ‘Seventh generation ultra-deepwater drilling platform(ship)’ of high-tech ship of Ministry of Industry and Information TechnologySpecial Project for innovation for ‘Research and development of deepwater semi-submersible support platform’ of high-tech ship Ministry of Industry and Information Technology+2 种基金the National Natural Science Foundation of China(51779109)Natural Science Foundation of Jiangsu,China(BK20171306)the State Key Laboratory of Ocean Engineering of Opening Foundation(1407)