Abstract
In the case of railway structures, there are cases where it is inevitable to construct structures on faults or in the vicinity of faults due to the alignment restrictions, and it is necessary to construct structures considering the influence of surface fault displacement. However, there are no adequate method for considering its influence. We have been conducting a study targeting rigid-frame viaducts which are widely used as railway structures and have proposed the single span viaduct with cantilever system as an effective type of viaduct against surface fault displacement. In this paper, we studied the behavior of the viaducts with different types of connection with the adjacent structures including cantilever system. In the study, we considered three types of connection which are Gerber beam type, footing integrated type without girders and cantilever type, and evaluated relative displacements at connecting part by using static nonlinear analysis. As a result, it is confirmed that the viaduct of Gerber beam type reaches a falling bridge with a slight amount of surface fault displacement and it is found that the proposed connecting type is effective.
