초록

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Abstract ▼ AI-Helper

Three types of connectors were suggested and tested for a modular double-skinned composite tubular(DSCT) wind turbine tower which is composed of two concentric steel tubes and concrete filled between them. The suggested three types were a socket type connector, an H-type connector, and a bolting-wel...

Three types of connectors were suggested and tested for a modular double-skinned composite tubular(DSCT) wind turbine tower which is composed of two concentric steel tubes and concrete filled between them. The suggested three types were a socket type connector, an H-type connector, and a bolting-welding-shear key connector. Three modular DSCT tower specimens which were connected by the suggested connectors and a one-body specimen were built. Quasi-static test was applied to evaluate the performances of the three types of connectors, and their behavioral characteristics and failure modes were analyzed. Test results showed that the specimen which had bolting-welding-shear key connectors exerted almost equal moment resisting capacity to that of the one-body specimen, but the other modular specimens exerted only the half moment resisting capacity of the one-body specimen. Also the results showed that the bolting-welding-shear key connector is applicable to a modular DSCT wind turbine tower by showing that it had equal ductility, maximum lateral displacement, and energy dissipation to those of the one-body specimen.

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