Submarine pipeline buckling on the seabed

Submarine pipelines are laid on the seabed for the transportation of hot oil products from oil fields to refineries. Depending on the bathymetric conditions, the pipeline characteristic features and the hot oil products, the bending stresses and strains associated with differential thermal and pressure loading leads to compressive forces, which in turn lead to vertical and lateral buckling. In this paper of the upheaval buckling analysis, the seabed is idealized by Winkler foundation model and along the slipping length the longitudinal Frictional resistance is taken as a function of vertical deflection. An integro-differential equation for the slipping length is derived and is solved by finite difference method. This paper confirms the effect of longitudinal frictional resistance in the submarine pipeline buckling analysis.