SEISMIC RESPONSE CHARACTERISTICS OF STEEL RAILWAY BRIDGES WITH SKEW ANGLES FOCUSED ON BEARINGS

Abstract

Enough studies have not been conducted up to now about the characteristic of bearings of skew bridges during earthquake. In this paper, we have conducted the monotonic loading test of the bearings by acting force in various directions, in order to evaluate non-linear property of the bearings in the respective directions. As a result, it was found out that the strength of bearings could be evaluated by the shear capacity regardless of directions. Moreover, we have conducted dynamic analyses of the steel railway bridges with different skew angles. As a result, it was found out that the bearings of the bridges with skew angles were easily damaged and the bearing at the obtuse corner was firstly damaged.