Dynamic stress analysis of long suspension bridges under wind, railway, and highway loadings

Z. W. Chen, You Lin Xu, Q. Li, D. J. Wu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

54 Citations (Scopus)

Abstract

Computation of the dynamic stress of long suspension bridges under multiloadings is essential for either the strength or fatigue assessment of the bridge. This paper presents a framework for dynamic stress analysis of long suspension bridges under wind, railway, and highway loadings. The bridge, trains, and road vehicles are respectively modeled using the finite-element method (FEM). The connections between the bridge and trains and between the bridge and road vehicles are respectively considered in terms of wheel-rail and tire-road surface contact conditions. The spatial distributions of both buffeting forces and self-excited forces over the bridge deck surface are considered. The Tsing Ma suspension bridge and the field measurement data recorded by a wind and structural health monitoring system (WASHMS) installed in the bridge are utilized as a case study to examine the proposed framework. The information on the concerned loadings measured by the WASHMS is taken as inputs for the computation simulation, and the computed stress responses are compared with the measured ones. The results show that running trains play a predominant role in bridge stress responses compared with running road vehicles and fluctuating wind loading.
Original languageEnglish
Pages (from-to)383-391
Number of pages9
JournalJournal of Bridge Engineering
Volume16
Issue number3
DOIs
Publication statusPublished - 1 May 2011

Keywords

  • Dynamic stress
  • Highway loading
  • Railway loading
  • Structural health monitoring
  • Suspension bridges
  • Wind loading

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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