In-situ test and dynamic response of a double-deck tied-arch bridge

Hongye Gou, Wen Zhou, Genda Chen, Yi Bao, Qianhui Pu

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

In this study, in-situ dynamic tests of the world's longest steel box tied-arch bridge over the Yangtze River, China, are reported. The double deck bridge supports highway and monorail systems at upper and lower levels, respectively. Strain, displacement, and acceleration responses were measured and used to investigate the vibration characteristics of the bridge when excited by running trains and/or trucks at a speed of 5-60 km/h, train braking, and truck bouncing. Impact factors were correlated with the running speed of trains and trucks. A three-dimensional finite element model of the coupled monorail-train-bridge vibration system accounting for track irregularities was established to understand the system behavior and validated by the experimental results. Truck bouncing was the dominant impact factor on bridge responses. The running speed of vehicles determined the riding comfort of traveling trains.

Original languageEnglish
Pages (from-to)161-175
Number of pages15
JournalSteel and Composite Structures
Volume27
Issue number2
DOIs
StatePublished - 25 Apr 2018

Keywords

  • Double-deck tied-arch bridge
  • Finite element analysis
  • Impact
  • In-situ dynamic test
  • Riding comfort
  • Straddle-type monorail
  • Vibration

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