Prediction Analysis of Train-Induced Ground Vibrations Using the Equivalent Excitation Force

Osamu YOSHIOKA
Train-induced ground vibrations produce complicated features depending on various conditions proper for the considered site. This paper proposes a new practical method to compute the vibrations taking the local conditions into account approximately. It is an important factor for the vibration prediction analysis how to assume the excitation force. The paper develops a method which makes use of the equivalent excitation force estimated by vibrations measured at a reference site. After formulating our method, we apply it to the ground vibrations induced by the Shinkansen running on an embankment. The case study shows not only the smooth execution for appling the method but also the approximate agreement of computed vibrations with measured ones.