抄録
It is desired that a method can grasp a first stage estimation of ice force on pyramid shaped arctic structures. To work out this task, making use of the Ralston's theory for conical shaped structures is seemed to be better way. In this study, relationship between Ice force calculated from the Ralston's theory for conical structures and ice forces on three types of pyramid shaped structure was examined experimentally. As a result, the coefficients for practical use, which is able to use the ice force calculated from the Ralston's theory, for conical, quadrangular and octangular pyramid shaped structures were proposed.
