A new-type wind power tower, internally confined hollow reinforced concrete (ICH RC) tower was developed and its standard sections were designed. Its targeting turbine capacity was 5.0 MW and the large displacement effect by turbine weight was considered. CoWiTA which is a non-linear analysis program was used for analyzing each section. Initial bottom diameter of the tower was 5.5 m with hollow ratios; 0.9, 0.85, 0.80, and 0.75 and 10% smaller diameter case was also considered with the same hollow ratios. In addition, the ICH RC tower could be separated into some modules for convenience of construction and installation. Each cross section at top and bottom of modules was designed and analysis of the sections was performed as well. As a result, all design cases except one case showed enough performance to support a 5.0 MW turbine. Also, it was confirmed that the modularized ICH RC wind tower satisfied with required load condition at each height by analyzing modules.
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