Short span bridges dynamic behaviour account for the vehicle-track-structure-soil dynamic interaction

作者：Romero A; Galvin P^*; Dominguez J

来源：Revista Internacional de Metodos Numericos Para Calculo y Diseno en Ingenieria, 2012, 28(1): 55-63.

DOI：10.1016/j.rimni.2011.11.004

• High-speed train
• Soil-structure interaction
• Railway bridge
• Resonant vibration

The dynamic vehicle-track-bridge-soil interaction is studied on high speed lines. The analysis is carried out using a general and fully three dimensional multi-body-finite element-boundary element model, formulated in the time domain to predict vibrations due to the train passage over the bridge. The vehicle is modelled as a multi-body system, the track and the bridge are modelled using finite elements and the soil is considered as a homogeneous half-space by the boundary element method. Usually, moving force model and moving mass model are employed to study the dynamic response of bridges. In this work, the multi-body system allows one to consider the quasi-static and dynamic excitation mechanisms. Soil-structure interaction is taken into account on the dynamic structure behaviour on simply-supported short span bridges. The influence of soil-structure interaction is analysed in both resonant and non-resonant regimes.

• 出版日期2012