Proposal of a New Type of Rigid-frame Viaduct Insusceptible to a Reverse Fault

抄録

In some cases, it is impossible to avoid building a linear structure, including those built for the railways, near a fault. This study evaluates the behavior of rigid frame viaducts against vertical surface fault displacements initiated by a reverse fault, in order to propose a viaduct structure that could resist this type of fault displacement. Three types of viaduct were examined: two with an existing long track record in service, and a new type, proposed in this study. Results obtained confirmed the effectiveness of the proposed viaduct design, i.e. a one-span extension viaduct, against vertical surface fault displacements.