Effects of train-induced ground vibrations by stiffening structures

Abstract

For the purpose of reducing environmental vibrations along the Shinkansen super-express track, we constructed trial concrete piers of a rigid-frame bridge to increase its cross-section. We made comparisons of data as measured and derived by the running of Shinkansen trains with dynamic simulation results by two or three-dimensional numerical analyses before and after the trial construction of piers. We studied the change of vibration property and adaptability of the numerical model. In these models we altered the parameters of composition members or inserting braces, and discussed about important factors to comprehend the characteristics of vibrations by stiffening structures of rigid-frame bridges.