Dynamic analysis of coupled road vehicle and cable-stayed bridge systems under turbulent wind

You Lin Xu, W. H. Guo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

124 Citations (Scopus)

Abstract

This paper presents a framework for performing dynamic analysis of coupled road vehicle and cable-stayed bridge systems under turbulent winds. Road vehicles are idealized as a combination of a number of rigid bodies connected by a series of springs and dampers. A cable-stayed bridge is modeled using the three-dimensional finite element method. The random roughness of the bridge deck is generated from a power spectral density function for the given road condition. Wind forces acting on the bridge, including buffeting forces and self-exciting forces, are simulated in the time domain using a fast spectral representation method, the aerodynamic admittance functions, the aerodynamic coefficients, and the flutter derivatives. The quasi-steady model is employed to generate crosswind forces on the road vehicles. The equations of motion of the coupled road vehicle-bridge system under turbulent winds are assembled using a fully computerized approach. The proposed framework is then applied to a real long span cable-stayed bridge with a group of moving high-sided road vehicles under turbulent winds. The results demonstrate that the proposed framework and the associated computer program can efficiently predict the dynamic response of coupled road vehicle and cable-stayed bridge systems subject to turbulent winds under a normal operation condition.
Original languageEnglish
Pages (from-to)473-486
Number of pages14
JournalEngineering Structures
Volume25
Issue number4
DOIs
Publication statusPublished - 1 Jan 2003

Keywords

  • Buffeting force
  • Cable-stayed bridge
  • Case study
  • Dynamic interaction
  • Road roughness
  • Road vehicle
  • Self-excited force
  • Turbulent wind

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this