Three-dimensional analyses of wave barriers for reduction of train-induced vibrations

研究成果: Article同行評審

51 引文 斯高帕斯(Scopus)

摘要

This paper explores the use of a three-dimensional finite-element analysis to model soil vibrations due to high-speed trains on bridges. Finite-element meshes include the bridge superstructure, bridge foundations, nearby building foundations, and piles. Wheel elements represented by appropriate mass, damping and stiffness factors were used to simulate a moving high-speed train. Along the mesh boundaries, absorbing boundary conditions were employed to avoid fictitious wave reflections. Isolation methods to reduce soil vibrations were investigated including construction of open and infilled trenches and soil improvement. Vibration isolation effects due to building foundations and piles were also studied. The finite-element results indicate that suitable axial stiffness between two simple beams can reduce vibration significantly, especially at a near-resonance condition. Operating with an appropriate train velocity to avoid resonance can be another way to reduce vibrations. Suitable mat foundations can significantly reduce soil horizontal vibration, but cannot isolate vertical vibration. Soil improvements near the bridge do not effectively attenuate low-frequency vibrations. Infilled and open trenches can isolate soil vertical vibration; however, their efficiency seems disproportionate to their cost.

原文English
頁(從 - 到)740-748
頁數9
期刊Journal of Geotechnical and Geoenvironmental Engineering
130
發行號7
DOIs
出版狀態Published - 2004 七月 1

All Science Journal Classification (ASJC) codes

  • 岩土工程與工程地質
  • 環境科學 (全部)

指紋

深入研究「Three-dimensional analyses of wave barriers for reduction of train-induced vibrations」主題。共同形成了獨特的指紋。

引用此