DYNAMIC RESPONSE ANALYSIS OF ELEVATED RAILWAY BRIDGES DUE TO SHINKANSEN TRAINS

Abstract

The dynamic characteristics of elevated bridges due to Shinkansen trains are investigated by means of three-dimensional dynamic analysis, considering the train-bridge interaction. Trains modeled as two-, six-, and nine-degree-of-freedom dynamic systems are adopted as analytical models and the influences of different train models are examined to find the rational one. Analytical results are compared with experimental ones to demonstrate the validity of the analytical procedure. The vibration characteristics of the bridge are evaluated according to the analytical results. As an application of this analytical procedure, countermeasures to reduce the undesirable vibration are proposed and examined.