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http://dx.doi.org/10.4334/JKCI.2005.17.1.121

Seismic Performance Assessment of RC Circular Column-Bent Piers Subjected to Bidirectional Quasi-Static Test  

Chung Young Soo (Dept. of Civil Engineering, Chung-Ang University)
Park Chang Kyu (Dept. of Civil Engineering, Chung-Ang University)
Lee Beom Gi (Dept. of Civil Engineering, Chung-Ang University)
Song Hee Won (Dept. of Civil Engineering, Chung-Ang University)
Publication Information
Journal of the Korea Concrete Institute / v.17, no.1, 2005 , pp. 121-128 More about this Journal
Abstract
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 $0.1 f_{ck}A_g$. 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.
Keywords
RC column-bent pier; bidirectional seismic loadings; lateral confinement ratio; hysteretic response;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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