Safety assessment of helicopter deck tube support structures for offshore mobile platforms
The pipe support structure is an important part of the deck design of offshore mobile platform helicop-ters.Due to the harsh sea environment,the overall structure is greatly affected by wind load.The safety assess-ment of the existing helicopter deck circular tube support structure mainly focuses on the static strength analysis of the circular tube,and lacks the wind-induced vibration response analysis.In this paper,the helicopter deck of offshore oil 163 platform is taken as an example to study the static and dynamic load input of the circular tube support structure.The force conditions of the circular tube support structure of the helicopter deck under static and wind loads are calculated and compared through the finite element strength analysis and the theoretical em-pirical formula.The quasi-static analysis considering the wind-induced vortex excitation effect is carried out.On this basis,the safety assessment method of the circular tube support structure of the helicopter deck is proposed,and the influence of wind load on the overall safety of the structure is explored.
tube support structurewind loadstress analysisstrength evaluationvortex induced vibration
万方数据
维普
