EXPERIMENTAL INVESTIGATION OF REINFORCED CONCRETE COLUMNS RETROFITTED BY THICK HYBRID WING-WALL

摘要

Thick Hybrid Wall (THW) is a strength–ductility type seismic retrofit technique composed of an existing reinforced concrete (RC) column and an additional wall united by a channel–shaped steel plate and PC bars for vulnerable soft first–story RC buildings. The shear and flexural strength improvement in the THW section by adjusting minimum additional wall length and the section’s unity are experimentally investigated by testing four THW specimens. Shear and flexural strength improvement by the THW technique was verified and the section’s monolithic behavior was observed.