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Wind and Structures Volume 21, Number 6, December 2015 , pages 727-753 DOI: https://doi.org/10.12989/was.2015.21.6.727 |
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Design feasibility of double-skinned composite tubular wind turbine tower |
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Taek Hee Han, Young Hyun Park, Deokhee Won and Joo-Ha Lee
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| Abstract | ||
| A double-skinned composite tubular (DSCT) wind power tower was suggested and automatic section design software was developed. The developed software adopted the nonlinear material model and the nonlinear column model. If the outer diameter, material properties and design capacities of a DSCT wind power tower are given, the developed software performs axial force-bending moment interaction analyses for hundreds of sections of the tower and suggests ten optimized cross-sectional designs. In this study, 80 sections of DSCT wind power towers were designed for 3.6 MW and 5.0 MW turbines. Moreover, the performances of the 80 designed sections were analyzed with and without considerations of large displacement effect. In designing and analyzing them, the material nonlinearity and the confining effect of concrete were considered. The comparison of the analysis results showed the moment capacity loss of the wind power tower by the mass of the turbine is significant and the large displacement effect should be considered for the safe design of the wind power tower. | ||
| Key Words | ||
| wind tower; column; DSCT; composite; large displacement effect | ||
| Address | ||
| Taek Hee Han and Young Hyun Park: Coastal Development Research Center, Korea Institute of Ocean Science and Technology, 787 Haeanro, Ansan 15627, Korea Deokhee Won: Coastal Disaster Prevention Research Center, Korea Institute of Ocean Science and Technology, 787 Haeanro, Ansan 15627, Korea Joo-Ha Lee: Department of Civil Engineering, The University of Suwon, 17 Wauan-gil, Hwaseong, 18323, Korea | ||