Performance Assessment of a Newly Constructed Skewed Half-Through Railway Bridge Using Integrated Sensing

Weiwei Lin, Liam J. Butler, Mohammed Z.E.B. Elshafie, Campbell R. Middleton

Research output: Contribution to journalArticle

Abstract

Half-through steel plate girder bridges are widely used across the United Kingdom's railway network. However, few studies have investigated their real in-service behavior. Concurrently, the use of advanced sensor systems, such as those utilizing fiber-optic sensors, have begun to find widespread use in structural health monitoring due to their high accuracy and long-term stability and durability. In this paper, the real performance of a newly constructed skewed half-through plate girder railway bridge was assessed using an integrated fiber optic monitoring system installed during the bridge's construction. Monitoring data recorded during the passage of 12 separate trains consisted of strains measured along the length of the main steel plate girders and crossbeams. Based on available design and construction information, a three-dimensional finite-element model capable of simulating the railway bridge's response was constructed and used to investigate and provide comparisons with monitoring results of the performance of such bridges under passing trains. The influence of track cant on load distribution between the two main girders was discussed, and the live load utilization percentage of the main girders was estimated to be approximately 37% of its design capacity. In addition, the effect of different transverse crossbeam end-connection details (pinned or moment connected) and the influence of axle load distribution through track ballast on the overall response of the bridge structure were evaluated. The results obtained in this study have not only led to the establishment of a comprehensive performance baseline for the newly constructed bridge for long-term condition monitoring but may also be used for improving the design and in-service structural evaluation of such bridges.

LanguageEnglish
Article number04018107
JournalJournal of Bridge Engineering
Volume24
Issue number1
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Beams and girders
Plate girder bridges
Monitoring
Steel bridges
Integrated optics
Structural health monitoring
Fiber optic sensors
Axles
Condition monitoring
Fiber optics
Durability
Steel
Sensors

Keywords

  • Fiber optic sensors
  • Half-through railway bridge
  • Numerical analysis
  • Performance assessment
  • Structural health monitoring

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Performance Assessment of a Newly Constructed Skewed Half-Through Railway Bridge Using Integrated Sensing. / Lin, Weiwei; Butler, Liam J.; Elshafie, Mohammed Z.E.B.; Middleton, Campbell R.

In: Journal of Bridge Engineering, Vol. 24, No. 1, 04018107, 01.01.2019.

Research output: Contribution to journalArticle

Lin, Weiwei ; Butler, Liam J. ; Elshafie, Mohammed Z.E.B. ; Middleton, Campbell R. / Performance Assessment of a Newly Constructed Skewed Half-Through Railway Bridge Using Integrated Sensing. In: Journal of Bridge Engineering. 2019 ; Vol. 24, No. 1.
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