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A platform for research: civil engineering, architecture and urbanism
Multi-mode flutter and buffeting analysis of the Akashi-Kaikyo bridge
The Akashi-Kaikyo bridge, which is the world's longest suspension bridge with a center span of 1990 m, was opened in April 1998. Since the bridge is very susceptible statically as well as aerodynamically to wind due to its flexibility, wind-resistant design of the bridge was a crucial issue in the design process. Flutter and buffeting are both issues of utmost concern in the wind-resistant design of long-span bridges. This requires true three-dimensional consideration in evaluating the bridge stability under wind. Wind tunnel testing was performed in Japan using 1/100-scaled aeroelastic full-model of the bridge. In this paper, the flutter and buffeting responses of the bridge are analyzed. The analytical method used here was a multi-mode analysis in the frequency domain. The analytical results were compared with the wind tunnel test data and there was a good agreement between them. Multi-mode buffeting analysis showed excellent agreement between the analysis and measurement in vertical and torsional response. However, the analysis overestimated lateral response.
Multi-mode flutter and buffeting analysis of the Akashi-Kaikyo bridge
The Akashi-Kaikyo bridge, which is the world's longest suspension bridge with a center span of 1990 m, was opened in April 1998. Since the bridge is very susceptible statically as well as aerodynamically to wind due to its flexibility, wind-resistant design of the bridge was a crucial issue in the design process. Flutter and buffeting are both issues of utmost concern in the wind-resistant design of long-span bridges. This requires true three-dimensional consideration in evaluating the bridge stability under wind. Wind tunnel testing was performed in Japan using 1/100-scaled aeroelastic full-model of the bridge. In this paper, the flutter and buffeting responses of the bridge are analyzed. The analytical method used here was a multi-mode analysis in the frequency domain. The analytical results were compared with the wind tunnel test data and there was a good agreement between them. Multi-mode buffeting analysis showed excellent agreement between the analysis and measurement in vertical and torsional response. However, the analysis overestimated lateral response.
Multi-mode flutter and buffeting analysis of the Akashi-Kaikyo bridge
Katsuchi, H. (author) / Jones, N.P. (author) / Scanlan, R.H. (author) / Akiyama, H. (author)
1998
11 Seiten, 6 Quellen
Conference paper
English
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