Abstract
A new computer program package, SOAP (Structural Offshore Analysis Package), developed by Keith, Feibusch Associates, Engineers, for the static analysis and code compliance evaluation of offshore jacket structures subjected to wave and current forces is described. The program calculates the hydrodynamic forces due to wave and current using an appropriate linear or non-linear wave theory and the Morrison's equation, and performs the structural analysis by the finite element method. It has the capability to analyse both fixed base structures and pile-supported structures. While the superstructure is assumed to behave linearly, the non-linear flexural behaviour of the piles, as well as the non-linear response of the soil may be included in the analysis. In addition to calculating the joint displacements and member stresses, the program also compares the calculated stresses against API Code allowables, and identifies those members that do not satisfy the code criteria.
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