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Occurrence Probability of Wind-Rain-Induced Stay Cable Vibration

Occurrence Probability of Wind-Rain-Induced Stay Cable Vibration Wind-rain-induced vibration of stay cables in cable-stayed bridges has been increasingly concerned by engineering professions. This paper presents a framework for estimating occurrence probability of wind-rain-induced stay cable vibration to facilitate the engineering decision on the implementation of anti-vibration system. The proposed framework is founded on the statistical analysis of wind speed, wind direction and rainfall intensity and the theoretical analysis of occurrence range of wind-rain-induced stay cable vibration. The joint probability density function of wind speed and wind direction, and the probability density function of rainfall intensity are first obtained for the site of a bridge through the statistical analysis. The occurrence range of wind speed and wind direction for wind-rain-induced vibration of a stay cable greater than a vibration amplitude threshold value is then found based on a theoretical model recently developed. The occurrence probability and risk of wind-rain-induced stay cable vibration are finally calculated according to the probability theory. The practical use of the proposed framework is demonstrated in this paper by taking a typical stay cable in a real cable-stayed bridge as a case study. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advances in Structural Engineering SAGE

Occurrence Probability of Wind-Rain-Induced Stay Cable Vibration

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Publisher
SAGE
Copyright
© 2008 SAGE Publications
ISSN
1369-4332
eISSN
2048-4011
DOI
10.1260/136943308784069487
Publisher site
See Article on Publisher Site

Abstract

Wind-rain-induced vibration of stay cables in cable-stayed bridges has been increasingly concerned by engineering professions. This paper presents a framework for estimating occurrence probability of wind-rain-induced stay cable vibration to facilitate the engineering decision on the implementation of anti-vibration system. The proposed framework is founded on the statistical analysis of wind speed, wind direction and rainfall intensity and the theoretical analysis of occurrence range of wind-rain-induced stay cable vibration. The joint probability density function of wind speed and wind direction, and the probability density function of rainfall intensity are first obtained for the site of a bridge through the statistical analysis. The occurrence range of wind speed and wind direction for wind-rain-induced vibration of a stay cable greater than a vibration amplitude threshold value is then found based on a theoretical model recently developed. The occurrence probability and risk of wind-rain-induced stay cable vibration are finally calculated according to the probability theory. The practical use of the proposed framework is demonstrated in this paper by taking a typical stay cable in a real cable-stayed bridge as a case study.

Journal

Advances in Structural EngineeringSAGE

Published: Feb 1, 2008

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