On the Mechanics of Submerged Vertical Slender Structures Subjected to Varying Axial Tension

摘要: This paper presents a mathematical basis for determining the structural and hydroelastic behaviour of submerged vertical slender steel structures operating at low tension. These have significant bending stiffness combined with self-weight so that axial force varies greatly from one end to other may even change sign. Such form key components drilling production platforms used exploitation hydrocarbons under world’s oceans. An understanding their reduced tension offers opportunities cost reduction further optimization. The buckling is evaluated by retaining nonlinear curvature terms using an expansion in series reduce governing equation set linear ordinary differential equations, which are then solved sequentially employing Galerkin’s technique. approach also extended lateral oscillation structure when excited forced horizontal oscillatory motions top end. uses these solution techniques explore typical offshore developments.