Author(s): Jinping Ou; Zhongdong Duan
Linked Author(s):
Keywords: Crushing failure; Ice force; Stochastic process; Spectrum density
Abstract: In this paper, the characteristic and mechanism of ice force stochastic process (IFSP) are discussed first. IFSP is classified into crushing failure process, bulking failure process and bending failure process according to the failure mode of ice. After spectnnn analysis of37 pieces of ice force vs. time sampling lines in crushing mode, which are selected from the field data of ice force surveyed at Bohai sea area, the corresponding spectnnn density and its parameters are determined. Further statistical analysis establishes the relationship between spectnnn parameters and ice thickness. Based on this results, the stochastic field model of ice force encircling upright column is obtained. The function of statistic field is given through statistical regressive analysis to large amount of field data. The stochastic process of total ice force on upright column and its spectrum density can be conveniently determined from the stochastic field model.
Year: 1996