California State Lands Commission

The objective was to conduct parametric studies of the dynamic response of reduced degrees of freedom nonlinear systems and determine how the results from simplified nonlinear capacity analysis relate to the results from complex time-domain analysis of the performance of platforms in extreme condition storms. Observed platform performance during recent hurricanes (e.g. Andrew, Camille, Betsy, Hilda) were used to verify the analysis. Engineering guidelines were developed to define dynamic nonlinear loading-capacity effects on the overall performance characteristics of platforms.

This project was intended to develop a computerized information system for the management of engineering analysis in the screening of large numbers of structures. Improved consequence assessment procedures, incorporating both absolute and comparative rankings, will be developed. An iterative approach was employed in the analysis of the suitability of structures, providing guidance for the direction of effort in structure assessment and for the reassessment of large numbers of structures as new assessment procedures and/or consequence standards are developed.