Numerical modelling of ground vibration caused by elevated high-speed railway lines considering structure-soil-structure interaction

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

Construction of high-speed railway lines has been an increasing trend in recent years. Countries like Denmark and Sweden plan to expand and upgrade their railways to accommodate high-speed traffic. To benefit from the full potential of the reduced commuting times, these lines must pass through densely populated urban areas with the collateral effect of increased noise and vibrations levels. This paper aims to quantify the vibrations levels in the area surrounding an elevated railway line built as a multi-span bridge structure. The proposed model employs finite-element analysis to model the bridge structure, including a multi-degree-of-freedom vehicle model and accounting for the track unevenness via a nonlinear contact model. The foundations are implemented as rigid footings resting on the ground surface, while the soil is modelled utilizing Green's function for a horizontally layered half-space. The paper analyses the effects of structure-soil-structure interaction on the dynamic behaviour of the surrounding soil surface. The effects of different soil stratification and material properties as well as different train speeds are assessed. Finally, the drawbacks of simplifying the numerical model, in order to reduce the complexity of the calculations, are determined.

Details

Authors
Organisations
External organisations
  • Aalborg University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Infrastructure Engineering

Keywords

  • Finite-element analysis, Ground vibration, High-speed railways, Structure-soil-structure interaction
Original languageEnglish
Title of host publicationProceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future
PublisherGerman Acoustical Society (DEGA)
Pages2119-2130
Number of pages12
Publication statusPublished - 2016 Aug 21
Publication categoryResearch
Peer-reviewedYes
Event45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016 - Hamburg, Germany
Duration: 2016 Aug 212016 Aug 24

Conference

Conference45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016
CountryGermany
CityHamburg
Period2016/08/212016/08/24