Wave Runup Around Conical Structures

by Michael de St. Q. Isaacson, Univ of British Columbia, Dep of, Civil Engineering, Vancouver, BC, Canada,



Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore

Abstract:

A variety of conical structures have been proposed for use in the Arctic environment, primarily because the inclined surface of such a structure gives rise to reduced ice loads associated with ice sheet failure in bending. In the design of such structures, predictions of maximum wave runup during the open water season are generally required in order to determine a suitable deck elevation. Wave runup around conical structures is considered. A series of experiments are described in which wave runup distributions and maximum runup are measured for conical structures of different geometries and under different wave conditions. The results are compared to the predictions of linear diffraction theory, based on an integral equation method for vertical axisymmetric structures. The influence of wave nonlinearities, cone angle, and the presence of a circular cylindrical component on the upper part of the structure are assessed.

Subject Headings: Wave runup | Water waves | Offshore structures | Ice loads | Conical bodies | Nonlinear waves | Linear functions | Arctic

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