抄録
Composite bridge pier consisting of steel pipes with external ribs and concrete can reduce construction-work by replacing a part of reinforcing bars with steel pipes. In order to evaluate seismic performance of this structure, the cyclic loading tests was carried out on a specimen which were scaled down as possible exactly .As the results, the relation between load-displacement curve and progression of the damage of bridge pier were revealed, furthermore decreasing of energy absorption and plastic hinge length, transition of longitudinal re-bars strain were verified. From these results, we showed the validity of the limit displacement method for evaluating the seismic performance of this composite bridge pier.
