This paper presents an analysis of the problem of reorientation of a riser pipe from an initially horizontal configuration during subsurface tow to the vertical position for installation. Front and rear barges support the pipe through cables. The orientation into a vertical configuration is accomplished by paying out the rear cable. The pipe is treated as a Bernoulli-Euler Beam with significant tension undergoing large angle deflections. A finite element procedure using state transfer matrices and successive linearization is given and the results show that the stress critical phase occurs when the pipe is going through the 60 deg angle to the horizontal direction. (Wassmann)
Analysis of the horizontal to vertical orientation of deep water risers
Untersuchung der horizontal nach vertikal Bewegung von Tiefsee-Leitrohren
ASME-Papers ; 1-6
1980
6 Seiten, 7 Bilder, 1 Tabelle, 3 Quellen
Conference paper
English
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