Measurements vs. estimation of nominal and local strain in a tubular K-joint of a stinger

摘要

This paper covers the comparison of estimated data and data obtained through real-time measurementsrnat a K-type tubular joint of a space frame, called a “stinger”, used as a support for a pipeline duringrnits installation on the seabed. Data used for comparison with the calculated strain range are obtained from statisticalrnanalysis of the measured nominal and local strain in the braces of the joint. It is shown that the statisticalrndistribution of strain ranges derived from the measurements is sometimes different from what is considered inrnthe fatigue analysis of stinger tubular joints, while the maximum strain ranges are still within the range of datarnused for stinger design.