Abstract
A method is presented for calculating the uncertainty associated with the estimation of peak pressure coefficients from wind tunnel test records of various lengths and how this uncertainty influences design wind effects. The proposed method is applicable to any type of structure and any type of civil engineering aerodynamic testing facility, including large-scale facilities. As an example of the application of the method, an investigation is presented of time series belonging to five categories of pressure coefficients implicit in Chapter 27 of the ASCE 7-10 Standard. The results of the investigation show that, for typical civil engineering wind tunnels, estimated design wind effects based on tests with durations as low as 10 s, corresponding to prototype durations of less than 6 min, are larger than their counterparts based on tests with 100 s duration by only approximately 5%. The proposed method provides useful indications on minimum lengths of pressure records to be measured in wind tunnels.
Get full access to this article
View all available purchase options and get full access to this article.
References
ASCE. 2005. Minimum design loads for buildings and other structures. ASCE/SEI 7-05. Reston, VA: ASCE.
ASCE. 2010. Minimum design loads for buildings and other structures. ASCE/SEI 7-10. Reston, VA: ASCE.
Casella, G., and R. L. Berger. 2002. Vol. 2 of Statistical inference. 2nd ed. Pacific Grove, CA: Duxbury.
Duthinh, D., A. L. Pintar, and E. Simiu. 2017. “Estimating peaks of stationary random processes: A peaks-over-threshold approach.” ASCE-ASME J. Risk Uncertainty Eng. Syst. Part A Civ. Eng. 3 (4): 04017028. https://doi.org/10.1061/AJRUA6.0000933.
Ellingwood, B., T. V. Galambos, J. G. MacGregor, and C. A. Cornell. 1980. Development of a probability based load criterion for American National Standard A58. Washington, DC: National Bureau of Standards.
Minciarelli, F., M. Gioffre, M. Grigoriu, and E. Simiu. 2001. “Estimates of extreme wind effects and wind load factors: Influence of knowledge uncertainties.” Probab. Eng. Mech. 16 (4): 331–340. https://doi.org/10.1016/S0266-8920(01)00024-8.
NIST. 2004. “Extreme winds and wind effects on structures.” Aerodynamic Database for Rigid Buildings. Accessed April 6, 2017. https://www.itl.nist.gov/div898/winds/homepage.htm.
Pickands, J., III. 1971. “The two-dimensional Poisson process and extremal processes.” J. Appl. Probab. 8 (4): 745–756. https://doi.org/10.2307/3212238.
Rofail, A. W., and K. C. S. Kwok. 1992. “A reliability study of wind tunnel results for cladding pressures.” J. Wind Eng. Ind. Aerodyn. 44 (1–3): 2413–2424. https://doi.org/10.1016/0167-6105(92)90033-7.
Simiu, E., A. L. Pintar, D. Duthinh, and D. Yeo. 2017. “Wind load factors for use in the wind tunnel procedure.” ASCE-ASME J. Risk Uncertainty Eng. Syst. Part A Civ. Eng. 3 (4): 04017007. https://doi.org/10.1061/AJRUA6.0000910.
Smith, R. L. 2004. “Statistics of extremes, with applications in environment, insurance, and finance.” Chap. 1 in Extreme values in finance, telecommunications, and the environment, edited by B. Finkenstädt and H. Rootzén, 1–78. Boca Raton, FL: Chapman & Hall/CRC Press.
Information & Authors
Information
Published In
Copyright
©2018 American Society of Civil Engineers.
History
Received: Aug 1, 2017
Accepted: May 9, 2018
Published online: Aug 17, 2018
Published in print: Nov 1, 2018
Discussion open until: Jan 17, 2019
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.