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Wind and Structures
  Volume 14, Number 4, July 2011 , pages 301-319
DOI: https://doi.org/10.12989/was.2011.14.4.301
 


Comparison between wind load by wind tunnel test and in-site measurement of long-span spatial structure
Hui Liu, Wei-lian Qu and Qiu-sheng Li

 
Abstract
    The full-scale measurements are compared with the wind tunnel test results for the long-span roof latticed spatial structure of Shenzhen Citizen Center. A direct comparison of model testing results to full-scale measurements is always desirable, not only in validating the experimental data and methods but also in providing better understanding of the physics such as Reynolds numbers and scale effects. Since the quantity and location of full-scale measurements points are different from those of the wind tunnel tests taps, the weighted proper orthogonal decomposition technique is applied to the wind pressure data obtained from the wind tunnel tests to generate a time history of wind load vector, then loads acted on all the internal nodes are obtained by interpolation technique. The nodal mean wind pressure coefficients,root-mean-square of wind pressure coefficients and wind pressure power spectrum are also calculated. The time and frequency domain characteristics of full-scale measurements wind load are analyzed based on filtered data-acquisitions. In the analysis, special attention is paid to the distributions of the mean wind pressure coefficients of center part of Shenzhen Citizen Center long-span roof spatial latticed structure. Furthermore, a brief discussion about difference between the wind pressure power spectrum from the wind tunnel experiments and that from the full-scale in-site measurements is compared. The result is important fundament of wind-induced dynamic response of long-span spatial latticed structures.
 
Key Words
    long-span; spatial latticed structure; wind tunnel test; wind load; full-scale measurement.
 
Address
Hui Liu and Wei-lian Qu :Hubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology,Wuhan, Hubei 430070, P. R. China
Qiu-sheng Li : Department of Building and Construction, City University of Hong Kong, Hong Kong, P. R. China
 

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