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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Sen Ying,Cao Zheng Gang,Wu Yue.Characteristics of wind pressure pulse on large-span flat roofs[J].Journal of Harbin Institute Of Technology(New Series),2009,16(1):75-80.DOI:10.11916/j.issn.1005-9113.2009.01.016.
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Characteristics of wind pressure pulse on large-span flat roofs
Author NameAffiliation
Sen Ying School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China 
Cao Zheng Gang School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China 
Wu Yue School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China 
Abstract:
The wind pressure pulse events, among the most important characteristics of wind pressure fluctuations on large-span flat roofs, were investigated by wind tunnel tests in this paper. Incorporating the formation mechanism of wind pressure pulse events, the peak over threshold method was employed to study properties of this kind of events. The event duration time, the energy contribution, the number of the pulse events, and the distribution of average peak pressure were calculated. Probability density functions of some typical samples in separation region were also given. Results show that the non-Gaussian roof pressure is strong in the flow separation region owing to the wind pressure pulse events. Evaluations of the extreme peak pressures, which can be determined by the peak over threshold method effectively, are important to the design of building cladding.
Key words:  large-span flat roofs  wind pressure pulse  peak over threshold method  vortex mechanism
DOI：10.11916/j.issn.1005-9113.2009.01.016
Clc Number:TU312.1
Fund:

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