In this study, a numerical experiment was carried out using a finite element method to quantify the contribution to structure-borne sound of each member in a RC rigid-frame viaduct. As examples of specific results, the contribution to the overall value at the 25 m point on a reinforced concrete (RC) rigid-frame viaduct was 73% for the center slab, 10% for the soundproof wall, and 17% for the cantilever slab. In addition, the contribution of the RC rigid-frame viaduct and the adjustable RC girders were 67% and 33% respectively. This indicates that both the rigid-frame viaduct and the RC girder may contribute significantly to structure-borne sound along the railway line.
Watanabe et al. (Sun,) studied this question.