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Engineering    2017, Vol. 3 Issue (6) : 845 -853     https://doi.org/10.1016/j.eng.2017.10.001
Research |
Investigation of Turbulence Effects on the Aeroelastic Properties of a Truss Bridge Deck Section
Hoang Trong Lam1,Hiroshi Katsuchi2(),Hitoshi Yamada2
1. The University of Danang—University of Science and Technology, Danang, Vietnam
2. Yokohama National University, Yokohama 240-8501, Japan
Abstract
Abstract  

This paper presents the flutter derivatives (FDs) extracted from a stochastic system identification (SSI) method under different turbulent flows. The objective of the study is to investigate the effects of oncoming turbulence on the flutter of suspended long-span bridges using a section model wind-tunnel test. Several wind-tunnel tests were performed on a truss bridge deck section with different oncoming turbulent properties involving reduced turbulence intensities and turbulent scales. This study includes an investigation of the effect of oncoming flows on modal dynamic responses. The transient and buffeting response data from the wind-tunnel test are analyzed using the system identification technique in extracting FDs, and the difficulties involved in this method are discussed. The time-domain SSI is applied to extract all FDs simultaneously from one and two degree-of-freedom (1DOF and 2DOF) systems. Finally, the results under different conditions are discussed and conclusions are formed.

Keywords Flutter derivatives      System identification      Turbulence effect      Buffeting response     
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Corresponding Authors: Hiroshi Katsuchi   
Just Accepted Date: 06 December 2017   Issue Date: 02 March 2018
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Hoang Trong Lam
Hiroshi Katsuchi
Hitoshi Yamada
Cite this article:   
Hoang Trong Lam,Hiroshi Katsuchi,Hitoshi Yamada. Investigation of Turbulence Effects on the Aeroelastic Properties of a Truss Bridge Deck Section[J]. Engineering, 2017, 3(6): 845 -853 .
URL:  
http://engineering.org.cn/EN/10.1016/j.eng.2017.10.001     OR     http://engineering.org.cn/EN/Y2017/V3/I6/845
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