Ocean Engineering Equipment and Technology ›› 2015, Vol. 2 ›› Issue (2): 75-79.

• Orginal Article •     Next Articles

Multiaxial Fatigue Assessment of Pile Leg Joint under Complex Stress State

Ying-fang LIU, Hong-feng LIU, Fu-hong JIANG, Li-zhong SAN, Yan-feng WANG, Wan-xiong XU   

  1. Dalian Shipbuilding Industry Engineering and Research Institute Co., Ltd., Dalian, Liaoning 116005, China
  • Received:2015-01-22 Online:2015-04-10 Published:2016-03-30


A new multiaxial fatigue criterion is introduced. In combination with the hot spot stress method, it is used to estimate the fatigue life of about 250 test specimens published in international open literature, through which the accuracy of the new method is verified. Finally we use the new method to do a successful fatigue life assessment of the pile leg joint. This research provides an available reference to improve the accuracy of the fatigue life prediction of pile leg joint.

Key words: jack-up platform, tubular joint, stress concentration, multiaxial fatigue

CLC Number: