대형 해양 자켓의 직립 안정성 고찰

초록

As the upending is one of the critical steps iin the installation of offshore structure, detail procedure of upending operation is studied in the paper. For larger offshroe structure installaion, launching method is often applied. However after launching, the upending process is to be followed. To ensure successful upending operation, detail process is analysed considering various factors affecting on the operation including reserved buoyancy, free flotation position, seabed clearance, ballast and hook load. To investigate the influence of each factor on the procedure, twelve numerical jacket models with various dimensions are simulated and studied