Design of Dynamically Wind-Loaded Helical Piers for Small Wind Turbines
Publication: Journal of Performance of Constructed Facilities
Volume 24, Issue 4
Abstract
The expansion of alternative energy has created a demand for sustainable alternatives for wind turbine foundation design. This study investigates the proposed application of helical piers as foundations for guyed cables of small (1–10-kW) wind towers. Before the foundation system can be implemented, pier response to typical working loads and extreme environmental conditions must be determined. Field conditions were determined by equipping an existing wind tower with accelerometers and load cells while monitoring wind speed to determine tower response. A full-scale testing program was conducted, which simulated dynamic loading conditions based on the tower response. The testing program varied between typical working conditions and extreme load events to determine the critical loading case and creep potential from long-term loading. This paper discusses the effects of dynamic loading on helical pier performance and compares the results to that of uplift prediction methods typically used in helical pier design.
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References
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 24 • Issue 4 • August 2010
Pages: 417 - 426
Copyright
© 2010 ASCE.
History
Received: Sep 23, 2009
Accepted: Jan 7, 2010
Published online: Jan 13, 2010
Published in print: Aug 2010
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