RESIDUAL STRENGTH OF CRACKED CIRCULAR HOLLOW SECTION (CHS) TUBULAR K-JOINTS
The prediction of the residual strength of offshore tubular joints is based on the design equations of uncracked joints. However, many offshore structures are found to contain cracks caused by severe cyclic loading conditions in the open sea. These fatigue cracks propagate and increase in size resulting in the reduction of the joint capacity. Therefore, there is a need to develop a systematic procedure for assessing the fracture strength of cracked tubular joints in practice. The most widespread and successful assessment approach is the failure assessment diagram (FAD) approach.Based on this approach, BS7910 2 gives guidance for assessing the acceptability of defects in welded structures. In these codes of practice, a specific assessment procedure for tubular joints in offshore structures has been proposed recently. In accordance with this procedure, an actual full-scale fatigue cracked tubular K-joint under combined loads has been analyzed and assessed illustrating the usage of this approach.
Crack failure assessment diagram K-joint plastic collapse load stress intensity factor
S T Lie B F Zhang Y B Shao
Nanyang Technological University, Singapore Yantai University, China
国际会议
The 9th International Conference on Steel Space & Composite Structures(第九届国际钢材、空间结构、组合结构会议)
烟台·北京
英文
461-467
2007-10-10（万方平台首次上网日期，不代表论文的发表时间）