Author(s): LIU Zhi-long, LI Ying, DING Peng-long, State Kay Laboratory of Hydraulic Engineering Simulation and Safety, School of Civil Engineering, Tianjin University
Pages: 100-106
Year: 2014 Issue:  5
Journal: The Ocean Engineering
Keyword:  steel tube umbilical; laying down analysis; contact & friction; strength check;
Abstract: Steel tube umbilicals( STUs) are important function structures in subsea engineering and face a huge challenge to be installed in deep water. Numerical simulation of the installation can provide a theoretic basis for the installation of STUs. In this work,laying down analysis was carried out for a STU that would be installed in an oil field of 1 500 m water depth. Structural nonlinearity,contact between internal components of STU and contact between STU and tensioner are fully considered in the analysis. In addition,the strength of the main components of STU is checked. Finally,it is suggested that the problem in the process of installation can be overcome by optimizing the cross-section of STU or using alternative material for STU components.