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Nonlinear performance of offshore platforms in extreme storm waves. R.G. Bea. J. Waterway, Port, Coastal, Ocean Engng., ASCE, March--April 1995, 122(2), 68--74.

Recorded and synthetic storm wave time histories have been used to develop loading time histories acting on template-type platforms having natural periods in the range of 1--5 s. The interactions of these loading histories with the dynamic, nonlinear, hysteretic performance characteristics of idealized systems were analysed. A modification to static pushover capacity analysis results is proposed to enable recognition of transient loading-structure performance characteristics. The results from the idealized systems were correlated with results from time domain nonlinear analyses of platform structure systems subjected to intense wave and earthquake loadings. For the global behaviour of the platforms studied, the results based on the simplified systems are in good agreement with those from the complete analyses. 22 refs.

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