Damping system for vibration control of stay cables

Inho Hwang, Jong Seh Lee, B. F. Spencer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Rain-wind induced cable vibration can cause serious problems in cable-stayed bridges. Externally attached dampers have been used to provide an effective means to suppress the vibration of relatively short stay-cables. For very long stay-cables, however, such damper systems are rendered ineffective, as the dampers need be attached near the end of cables for aesthetic reasons. This paper investigates a new stay-cable damping system to mitigate the cable vibration. The proposed damping system which consists of a laminated rubber bearing and an internal damper may be installed inside of the cable anchorage. A simple analytical model of the cable-damper system is developed first based on the taut string representation of the cable. The response of a cable with the proposed damping system is obtained and then compared to those of the cable with and without an external passive damper. The proposed stay-cable damping system is shown to perform better than the optimal passive viscous damper.

Original languageEnglish (US)
Title of host publicationWind and Earthquake Engineering - Proceedings of the 10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010
Pages321-326
Number of pages6
StatePublished - 2006
Event10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010 - Bangkok, Thailand
Duration: Aug 3 2006Aug 5 2006

Publication series

NameWind and Earthquake Engineering - Proceedings of the 10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010
Volume3

Other

Other10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010
Country/TerritoryThailand
CityBangkok
Period8/3/068/5/06

Keywords

  • Bearings
  • Cable-stayed bridges
  • Rubber
  • Vibration control
  • Wind loads

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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