Special edition paper

When a train runs fast, vibration propagates from the viaduct to the piers and then to the ground from the piers as oscillation sources. That often subsequently causes vibration of doors and windows of nearby houses and buildings. Ground vibration propagated from piers to ground is expected to increase as trains operate at faster speeds. Thus, ground vibration control has come to be an important issue to overcome in achieving further speed increases with high-speed trains. Since 2007, the Frontier Service Development Laboratory has proposed methods of analytically considering ground vibration, with an aim of establishing a design and construction method for more effective ground vibration control work. Those include a method of assessing effects of vibration control work (continuous underground wall) to be carried out near structures as shown in Fig. 1.1) 2) In order to refine the method of forecasting ground vibration propagation, we are now conducting long-term measurement and analysis of actual ground vibration and its propagation from structures to the ground. This article will cover knowledge obtained from the measurements and analyses conducted