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CLC number: U448.27

On-line Access: 2012-01-18

Received: 2011-07-07

Revision Accepted: 2011-09-23

Crosschecked: 2011-12-29

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Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.2 P.91-104

10.1631/jzus.A1100177


Digital simulation of 3D turbulence wind field of Sutong Bridge based on measured wind spectra


Author(s):  Hao Wang, Zhou-hong Zong, Ai-qun Li, Teng Tong, Jie Niu, Wen-ping Deng

Affiliation(s):  Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China; more

Corresponding email(s):   whzjn@sina.com

Key Words:  Turbulence simulation, Spectral representation method, Fast Fourier transform (FFT), Cable-stayed bridges, Structural health monitoring system (SHMS), Power spectral density


Hao Wang, Zhou-hong Zong, Ai-qun Li, Teng Tong, Jie Niu, Wen-ping Deng. Digital simulation of 3D turbulence wind field of Sutong Bridge based on measured wind spectra[J]. Journal of Zhejiang University Science A, 2012, 13(2): 91-104.

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author="Hao Wang, Zhou-hong Zong, Ai-qun Li, Teng Tong, Jie Niu, Wen-ping Deng",
journal="Journal of Zhejiang University Science A",
volume="13",
number="2",
pages="91-104",
year="2012",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1100177"
}

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%T Digital simulation of 3D turbulence wind field of Sutong Bridge based on measured wind spectra
%A Hao Wang
%A Zhou-hong Zong
%A Ai-qun Li
%A Teng Tong
%A Jie Niu
%A Wen-ping Deng
%J Journal of Zhejiang University SCIENCE A
%V 13
%N 2
%P 91-104
%@ 1673-565X
%D 2012
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1100177

TY - JOUR
T1 - Digital simulation of 3D turbulence wind field of Sutong Bridge based on measured wind spectra
A1 - Hao Wang
A1 - Zhou-hong Zong
A1 - Ai-qun Li
A1 - Teng Tong
A1 - Jie Niu
A1 - Wen-ping Deng
J0 - Journal of Zhejiang University Science A
VL - 13
IS - 2
SP - 91
EP - 104
%@ 1673-565X
Y1 - 2012
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1100177


Abstract: 
Time domain analysis is an essential implement to study the buffeting behavior of long-span bridges for it can consider the non-linear effect which is significant in long-span bridges. The prerequisite of time domain analysis is the accurate description of 3D turbulence winds. In this paper, some hypotheses for simplifying the 3D turbulence simulation of long-span cable-stayed bridges are conducted, considering the structural characteristics. The turbulence wind which is a 3D multivariate stochastic vector process is converted into four independent 1D univariate stochastic processes. Based on recorded wind data from structural health monitoring system (SHMS) of the Sutong Bridge, China, the measured spectra expressions are then presented using the nonlinear least-squares fitting method. Turbulence winds at the Sutong Bridge site are simulated based on the spectral representation method and the fast Fourier transform (FFT) technique, and the relevant results derived from target spectra including measured spectra and recommended spectra are compared. The reliability and accuracy of the presented turbulence simulation method are validated through comparisons between simulated and target spectra (measured and recommended spectra). The obtained turbulence simulations can not only serve further analysis of the buffeting behavior of the Sutong Bridge, but references for structural anti-wind design in adjacent regions.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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