• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 22 Issue 4
Aug.  2009
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Article Contents
L? Jianpin, ZHANG Jiwen, LIAO Jianzhou, HU Weinan, TU Yongming. Response of Noise Barrier for Existing Railway Bridges under Impulsive Pressure Induced by High-Speed Train[J]. Journal of Southwest Jiaotong University, 2009, 22(4): 547-551.
Citation: L? Jianpin, ZHANG Jiwen, LIAO Jianzhou, HU Weinan, TU Yongming. Response of Noise Barrier for Existing Railway Bridges under Impulsive Pressure Induced by High-Speed Train[J]. Journal of Southwest Jiaotong University, 2009, 22(4): 547-551.

Response of Noise Barrier for Existing Railway Bridges under Impulsive Pressure Induced by High-Speed Train

  • Received Date: 25 May 2008
  • A finite element model for noise barriers of the existing railway bridges was built by using an SAP2000(structural analysis programme) software.In this model,the connections between stop plank and H-type steel columns are simulated using displacement springs and rotation springs.The dynamic responses of noise barriers for three types of railway bridges with a span of 16,24 or 32 m were analyzed by considering both multiple support excitation and uniform excitation.The distribution characteristics of displacement amplitude,bending moment amplitude and dynamic magnification coefficient of noise barriers were investigated.The research results show that the factor of traveling-wave effect of noise barriers are below 1 for the three types of railway bridges.The maximum displacement of the columns and the bending moment of the cantilever beam decrease with the increase of bridge span.The maximum displacement of the columns for a 16 m span bridge reaches 15.5 mm due to the deficient stiffness of its cantilever beam.

     

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