Study of ground vibration induced by high-speed trains moving on multi-span bridges

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

This paper investigates the ground vibration induced by high-speed trains moving on multi-span continuous bridges. The dynamic impact factor of multi-span continuous bridges under trainloads was first determined in the parametric study, which shows that the dynamic impact factor will be large when the first bridge vertical natural frequency is equal to the trainload dominant frequencies, nV/D, where n is a positive integer, V is the train speed, and D is the train carriage interval. In addition, more continuous spans will produce smaller dynamic impact factors at this resonance condition. Based on the results of three-dimensional finite element analyses using the soil-structure interaction for realistic high-speed railway bridges, we suggest that the bridge span be set at 1.4 to 1.5 times the carriage interval for simply supported bridges. If not, the use of four or more-than-four-span continuous bridges is suggested to reduce the train-induced vibration. This study also indicates that the vibration in the train is major generated from the rail irregularities and that from the bridge deformation is not dominant. Keywords: finite element analysis; high-speed train; impact factor; multi-span bridge; resonance; trainload dominant frequency; vibration.

原文English
頁(從 - 到)277-290
頁數14
期刊Structural Engineering and Mechanics
59
發行號2
DOIs
出版狀態Published - 2016 7月 25

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 建築與營造
  • 材料力學
  • 機械工業

指紋

深入研究「Study of ground vibration induced by high-speed trains moving on multi-span bridges」主題。共同形成了獨特的指紋。

引用此