Author(s): Li Feng; Yue Qianjin
Linked Author(s):
Keywords: No Keywords
Abstract: The paper addresses problems in determining alternating ice forces on conical offshore structures. Full-scale data is used to analyze the amplitude and period of the ice force. These parameters are needed in the dynamic analysis for the ice-resistant structure. Theoretical results for the ice force are compared with results of full-scale tests. A theoretical estimation of the dimensionless vertical component of the ice force is in the range of 0.67～0.7, while the upper limit of this parameter was 0.65 in the tests data. The ratio between the ice failure length and the ice thickness is used as a key parameter in forecasting the period of the alternating ice force. Differences between various methods are discussed, and the influences of the cone angle, friction coefficient and contact width are examined.
Year: 2002