Interaction between continuous welded rail and long-span steel truss arch bridge of a high-speed railway under seismic action

Wenshuo Liu, Gonglian Dai, Zhiwu Yu, Yohchia F. Chen, Xuhui He

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Track–bridge interaction under the seismic excitation is a dominant factor to the design and operation of railway bridges. A spatial model integrating rails, deck system, stringers, cross beams, suspenders, main trusses, piers and foundations was established in this paper, adopting non-linear springs to simulate the longitudinal resistance between the track and the bridge. The improved Penzien model was utilised to simulate the soil-pile interaction effect and a computer program was developed to generate artificial seismic waves. Comparison of natural vibration characteristics for the track–bridge system with and without considering the track constraint was made. Furthermore, the effects of sensitive parameters were investigated, including the ballast resistance, friction of movable bearings, location of rail expansion joint (REJ), etc. Present study results indicate that the track–bridge interaction enhances the structural integrity and induces relatively higher natural frequencies of the bridge. In general, the response obtained by the ballast resistance specified in the Chinese code is smaller than that by UIC code. Neglecting the friction of movable bearing will lead to over-estimated rail stresses and under-estimated internal forces of some piers in the system. Setting REJ at both beam ends is more efficient to release the seismic stress of the rail on the bridge.

Original languageEnglish (US)
Pages (from-to)1051-1064
Number of pages14
JournalStructure and Infrastructure Engineering
Volume14
Issue number8
DOIs
StatePublished - Aug 3 2018

Fingerprint

Arch bridges
Steel bridges
arch
Rails
steel
Bearings (structural)
pier
Expansion joints
Piers
friction
Friction
Stringers
Trusses
Seismic waves
seismic wave
railway
Structural integrity
vibration
pile
Vibrations (mechanical)

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Safety, Risk, Reliability and Quality
  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering
  • Mechanical Engineering

Cite this

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title = "Interaction between continuous welded rail and long-span steel truss arch bridge of a high-speed railway under seismic action",
abstract = "Track–bridge interaction under the seismic excitation is a dominant factor to the design and operation of railway bridges. A spatial model integrating rails, deck system, stringers, cross beams, suspenders, main trusses, piers and foundations was established in this paper, adopting non-linear springs to simulate the longitudinal resistance between the track and the bridge. The improved Penzien model was utilised to simulate the soil-pile interaction effect and a computer program was developed to generate artificial seismic waves. Comparison of natural vibration characteristics for the track–bridge system with and without considering the track constraint was made. Furthermore, the effects of sensitive parameters were investigated, including the ballast resistance, friction of movable bearings, location of rail expansion joint (REJ), etc. Present study results indicate that the track–bridge interaction enhances the structural integrity and induces relatively higher natural frequencies of the bridge. In general, the response obtained by the ballast resistance specified in the Chinese code is smaller than that by UIC code. Neglecting the friction of movable bearing will lead to over-estimated rail stresses and under-estimated internal forces of some piers in the system. Setting REJ at both beam ends is more efficient to release the seismic stress of the rail on the bridge.",
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Interaction between continuous welded rail and long-span steel truss arch bridge of a high-speed railway under seismic action. / Liu, Wenshuo; Dai, Gonglian; Yu, Zhiwu; Chen, Yohchia F.; He, Xuhui.

In: Structure and Infrastructure Engineering, Vol. 14, No. 8, 03.08.2018, p. 1051-1064.

Research output: Contribution to journalArticle

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AU - Dai, Gonglian

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AU - He, Xuhui

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