Abstract
In the railway bridges, steel hinge support rigid frame piers are used for important bridges to cross over another railway or road. Since the damage of these bridges causes a serious impact for society at large-scale earthquakes, it is needed to establish the aseismic evaluation method for these piers. The cyclic loading tests were conducted to verify the elasto-plastic behavior of the beam-column connection, hinge support and steel hinge support rigid frame pier that were removed from real bridges used on Tokaido-Shinkansen for thirty-five years. This study is aimed at establishing the aseismic evaluation method that obtains accuracy and simplicity considering the test results. We therefore propose the analysis model that expresses the beam and column member including connection part and hinge support by beam elements. Especially for the beam-column connection, elasto-plastic characteristic was determined based on the test and FEM analysis results of the beam-column connection specimens. Besides, the modeling and evaluation method of hinge support were examined. This modeling method was verified by the test result of the steel hinge support rigid frame pier specimen.
