Fatigue damage analysis of crane pedestal in fixed offshore platform
The fatigue strength of fixed offshore platform crane pedestal with different crane boom horizontal rotating angles are calculated under working loads and wind loads.Based on wind direction probability,the fatigue strength analysis method of crane pedestal is concluded.The fatigue analysis is calculated based on S-N curve method in working loads condi-tion.The fatigue analysis was calculated based on wind direction probability distribution map in wind loads condition.The fatigue damages are accumulated in the same position,and compared with the result of direct combination of the working loads and wind loads.This analysis method provides a reference for other local structure on fixed offshore platform under wind loads and cyclic loads.