A Study on Seismic Capacity of Circular Spiral Reinforced Concrete Bridge Piers used in High Strength Concrete

고강도 원형나선철근기둥의 내진성능에 관한 연구

This research was conducted to investigate the seismic behavior and capacity assessment of circular spiral reinforcement concrete bridge piers used in high strength concrete. The displacement ductility, response modification factor(R), effective stiffness and plastic hinge region etc. was used to assess the seismic behavior and capacity of circular spiral reinforcement concrete bridge piers. The experimental variables of bridge piers test consisted of amount and spacing, different axial load levels. From the quasi-static tests on 9 bridge piers and analysis, it is found that current seismic design code specification of transverse confinement steel requirements and details may be revised.