ABSTRACT

The response of offshore structures to cyclic wind and wave loading is likely to govern critical design elements and ultimately the cost of installation and the structure lifespan. This is especially true for offshore wind and tidal turbines, where the magnitude of cyclic load is in greater proportion to their relatively light weight. A variety of novel foundation types have been proposed for renewable energy developments, but few experimental studies have been conducted examining their response under long term cyclic loading. A system was developed and used to apply hundreds of thousands of load cycles to intermediate-scale model foundations. System details are described for a helical pile application, and consideration is given to typical challenges encountered in long term cyclic axial loading, such as selecting hardware, managing simultaneous instrument measurement and control tasks, monitoring measurement accuracy, managing large data sets, and protecting equipment during unsupervised testing.

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REFERENCES

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Go to IFCEE 2021
IFCEE 2021
Pages: 220 - 229

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Published online: May 6, 2021

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J. T. Newgard [email protected]
P.E.
1Dept. of Structural Engineering, Univ. of California–San Diego, San Diego, CA. Email: [email protected]; [email protected]
J. S. McCartney, Ph.D., F.ASCE [email protected]
P.E.
2Dept. of Structural Engineering, Univ. of California–San Diego, San Diego, CA. Email: [email protected]

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