Parametric oscillation of cables and aerodynamic effect

Yong Xia, Jing Zhang, You Lin Xu, Yozo Fujino

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

This paper addresses the aerodynamic effect on the nonlinear oscillation, particularly parametric vibration of cables in cable-stayed bridges. A simplified 2-DOF model, including a beam and a stayed cable, is formulated first. Response of the cable under global harmonic excitation which is associated with wind speed is obtained using the multiple scales method. Via numerical analysis, the stability condition of the cable in terms of wind speed is derived. The method is applied to a numerical example and a long-span bridge to analyze its all stay cables. It is demonstrated that very large vibration at one of the longest cables in the middle span of the bridge can be parametrically excited when the wind speed is over around 210 km/h (58.5 m/s).
Original languageEnglish
Pages (from-to)321-325
Number of pages5
JournalFrontiers of Architecture and Civil Engineering in China
Volume4
Issue number3
DOIs
Publication statusPublished - 16 Jul 2010

Keywords

  • cable-stayed bridge
  • cables
  • nonlinear vibration
  • parametric vibration

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture

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