The design and assessment of jacket tubular joints are usually performed based on the stress-lifetime (S-N) curve in Chinese ocean oil and gas engineering projects, while the fracture mechanics methods are rarely employed. This article describes the basic theory of fracture mechanics, ECA, fatigue crack growth law and general assessment procedure, and then gives an assessment example by JPEFA program.
American Petroleum Institute API RP 2A--2007. Recommended practice for planning, designing and constructing fixed offshore platforms--working stress design[S]. Washington DC: American Petroleum Institute, 2007.
[2]
程靳,赵树山. 断裂力学[M]. 北京: 科学出版社, 2006.
[3]
British Standards Institution. BS7910--2005. Guide to methods for assessing the acceptability of flaws in metallic structures[S]. London: British Standards Institution, 2005.
[4]
Dowling A R, Townley C H A. The effect of defects on structural failure: a two-criteria approach[J]. International J Pressure Vessels and Piping, 1975, 3(2): 77.
[5]
Paris P C.The Boeing Company Document No. 17867, Addendum N[S]. 1957.
[6]
Connolly M P, Hellier A K, Dover W D, et al. A parametric study of the ratio of bending to membrane stress in tubular Y and T joints[J]. International Journal of Fatigue, 1990, 12(1): 3.