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Seismic Performance Assessment of RC Circular Column-Bent Piers Subjected to Bidirectional Quasi-Static Test
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 Title & Authors
Seismic Performance Assessment of RC Circular Column-Bent Piers Subjected to Bidirectional Quasi-Static Test
Chung Young Soo; Park Chang Kyu; Lee Beom Gi; Song Hee Won;
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A RC column-bent pier represents one of the most popular piers used in highway bridges. Seismic performance of reinforced concrete (RC) column-bent piers under bidirectional seismic loadings was experimentally investigated. Six column bent-piers were constructed with two circular supporting columns which were made in 400 mm diameter and 2,000 mm height. One single column specimen was additionally made to comparatively evaluate the seismic response of RC column-bent piers. Test parameters are different transverse reinforcement and loading pattern. These piers were tested under lateral load reversals with the axial load of . Three specimens were subjected to bidirectional lateral load cycles which consisted of two main longitudinal loads and two sub transverse loads in one load cycle. Other three specimens were loaded in the opposite way. Test results indicated that lateral strength and ductility of the latter three specimens were generally bigger than those of the former three specimens. Plastic hinges were formed with the spall of cover concrete and the fracture of the longitudinal reinforcing steels in the bottom plastic hinge of two supporting columns for the former three specimens. Similar behavior was observed in the top and bottom parts of two supporting columns for the latter three specimens.
RC column-bent pier;bidirectional seismic loadings;lateral confinement ratio;hysteretic response;
 Cited by
주철근 겹침이음된 RC교각의 근단층지반운동에 대한 진동대 응답과 분석,정영수;박창영;홍현기;박지호;심창수;

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