Assessment of Safety and Load Carrying Capacity of Aged Jacket-Typed Dolphin by Ship-Impact Test

An improved evaluation method of load-carrying capacity for the large-scaled offshore structures, which subjected to the axial force and bending moments simultaneously at the piles, was suggested with reliability analysis and advanced working stress method. Reliability analysis requires the fracture probability and safety factor() for each of forces and the load-carrying capacity due to combined action of axial force and bending moments from Curve. The combined equation due to those forces, which suggested by the Korean Specification for the marine structure, was derived for the advanced working stress method and applied to evaluate the load-carrying capacity of jacket-type dolphin piers.