Ground-Borne Vibrations Resulting from Moving Trains via Underground Tunnels

10.6601/FCTI.2007.1(1).2

Lin-Ching Hsu

Ground-borne Vibration ； train ； underground tunnel ； finite element ； infinite element

營建科技與資訊論壇

1卷1期（2007 / 02 / 01）

13 - 21

英文

In this paper, an investigation is conducted of the ground-borne vibration problem induced by trains moving in underground tunnels. The numerical procedure adopted here is called the coupled finite/infinite element method. With this approach, a soil-structure system is divided into two regions as the near and far fields. The near field is simulated by the finite elements as conventional, and the far field covering the soils with infinite boundary by the infinite elements. It is concluded that the tunnel structure, which is harder than the surrounding soils for most practical situations, will induce a resonance frequency greater than the primary frequency of the soil stratum, which can be clearly observed at the point inside the tunnel.