Model design and testing of a large gravity-base offshore structure

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ConferenceIASS-CSCE International Conference, July 1992, Toronto
AbstractThis paper describes the design of a hydrodynamically scaled model of a Gravity Base Structure (GBS) for testing in wave loading. The measurement and interpretation of the loads is potentially complicated by the dynamic response of the model and its force transducers. A finite-element model of the setup was used to simulate structural response to wave loading and subsequently identify the optimum position of force transducers to measure large global loads without loss of sensitivity/ Furthermore natural frequencies of the model were calculated. The model design required a seal to prevent pressure forces from occurring underneath or inside the model. The seal was constructed and tested to determine stiffness, hysteresis effects, and damping characteristics for small deflections. Static offset and vibration decay tests were performed on the model assembly with and without the seals attached to determine the stiffness and damping effects.
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedNo
NRC number5521
NPARC number8895716
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Record identifier02ac262f-31dc-4728-a049-d800a6e9e231
Record created2009-04-22
Record modified2016-05-09
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