Reduction effect evaluation of various factors on high-speed train-induced vibration of Shinkansen viaducts

Abstract

This study is intended to evaluate the vibration reduction effects of various factors for the vibration responses of Shinkansen viaducts in both vertical and lateral directions under running high-speed trains. The vibration characteristics of the viaducts are clarified by means of the 3D numerical analysis which is verified through comparing the analytical and experimental results. The dynamic reaction forces at the pier bottoms are obtained for further ground vibration analysis as input excitation forces. The influential factors including train type, track irregularity and damping are adopted as important variables which are beneficial to reduce the train-induced vibration of the viaducts.