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Journal of Zhejiang University SCIENCE A 1998 Vol.-1 No.-1 P.

10.1631/jzus.A1900353


Revisiting aerodynamic admittance functions of bridge decks


Author(s):  Lin ZHAO, Xi XIE, Teng WU, Shao-peng LI, Zhi-peng LI, Yao-jun GE, Ahsan KAREEM

Affiliation(s):  State Key Lab of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; more

Corresponding email(s):   tengwu@buffalo.edu

Key Words:  Aerodynamic admittance function, Bridge deck, Buffeting analysis, Wind tunnel test, Sensitivity analysis


Lin ZHAO, Xi XIE, Teng WU, Shao-peng LI, Zhi-peng LI, Yao-jun GE, Ahsan KAREEM. Revisiting aerodynamic admittance functions of bridge decks[J]. Journal of Zhejiang University Science A, 1998, -1(-1): .

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author="Lin ZHAO, Xi XIE, Teng WU, Shao-peng LI, Zhi-peng LI, Yao-jun GE, Ahsan KAREEM",
journal="Journal of Zhejiang University Science A",
volume="-1",
number="-1",
pages="",
year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1900353"
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%A Xi XIE
%A Teng WU
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Abstract: 
A framework is proposed to identify a comprehensive set of aerodynamic admittance functions for bridge decks. The contributions of the cross-spectra between longitudinal and vertical wind velocity components and between turbulence components and gust-induced forces are embedded in the identification procedure. To facilitate application of the identified functions in engineering practice, the concept of an equivalent aerodynamic admittance function is introduced and numerically validated. The equivalent aerodynamic admittance functions of a set of streamlined and bluff cross-sections were identified experimentally in a wind tunnel. buffeting analysis of a bridge deck was carried out and the response predicted using the identified aerodynamic admittance functions compared well with the measured response. In addition, a sensitivity analysis was performed to delineate the influence of aerodynamic and structural parameters on the buffeting response, thereby demonstrating the significance of the proposed identification framework.

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