Standard Section Design of ICH RC Tower Supporting 5.0MW Wind Turbine

Abstract

A new-type wind power tower, ICH RC (internally confined hollow reinforced concrete) 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 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, the case of 5.5 m bottom diameter with 90% hollow ratio satisfied for the required load condition, and the results of 10% less diameter case showed that hollow ratio should be less than 85% to resist safe to its demand load.was considered. CoWiTA which is a non-linear analysis program was used for analyzing each section. Initial bottom diameter 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, the case of 5.5 m bottom diameter with 90% hollow ratio satisfied for the required load condition, and the results of 10% less diameter case showed that hollow ratio should be less than 85% to resist safe to its demand load.