NDLI: Velocity Effects on Conical Structure Ice Loads

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Dmitri, G. Matskevitch
Copyright Year	2002
Abstract	Existing design codes and most methods for ice load calculation for conical structures do not take velocity effects into account. They were developed as an upper bound estimate for the load from slow moving ice which fails in bending against the cone. Velocity effects can be ignored when the structure is designed for an area with slow ice movement, for example, the nearshore Beaufort Sea. Sakhalin structures will be exposed to ice moving at velocities up to about 1.5 m/sec. Model tests show that quasi-static methods may underestimate the ice load on a steep cone when the interaction velocity is that high. The present paper summarizes results of published model tests with conical structures that show a velocity effect. An empirical correction factor to the Ralston method is developed to account for the increase in cone load with ice velocity. The paper also discusses velocity effects on ice failure length and possible transition from bending failure to an alternative failure mode when the ice velocity is high.
Sponsorship	Ocean, Offshore, and Arctic Engineering Division
Starting Page	635
Ending Page	643
Page Count	9
File Format	PDF
ISBN	0791836134
DOI	10.1115/OMAE2002-28079
e-ISBN	0791835995
Volume Number	21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3
Conference Proceedings	ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
Language	English
Publisher Date	2002-06-23
Publisher Place	Oslo, Norway
Access Restriction	Subscribed
Subject Keyword	Design Ice Seas Stress Failure Failure mechanisms
Content Type	Text
Resource Type	Article

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