It is known that seismic performance of existing bridges having insufficient lateral confinements and lap-splices of longitudinal reinforcements at the base of column decreases dramatically. In this study, small-scaled model tests have been performed to confirm the seismic behaviors of RC bridge piers with various lap-splice lengths. The 8 test models have circular section with diameters of 0.65 m, 0.8 m, 1.0 m, and lap-splice lengths of B-class or C-class. The test results show that the failure modes of models are not depending on the lap-splice length itself but depend on the ratio of lap-splice length to diameter, and that the displacement ductility is also affected by this ratio.

• 김익현(울산대학교 건설환경공학부) | Kim, Ick Hyun Corresponding author
• 선창호(울산대학교 건설환경공학부) | Sun, Chang Ho
• 이승화(울산대학교 건설환경공학부) | Lee, Seung Hwa
• 박광순(한국시설안전공단) | Park, Kwang Soon
• 서형열(한국시설안전공단) | Seo, Hyeong Yeol