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http://dx.doi.org/10.12652/Ksce.2016.36.3.0349

A Study on Buffeting Responses of a In-service Steel Cable-stayed Bridge Using Full-scale Measurements  

Lee, Deok Keun (KISTEC)
Kong, Min Joon (KISTEC)
You, Dong Woo (KISTEC)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.36, no.3, 2016 , pp. 349-359 More about this Journal
Abstract
In order to analytically evaluate buffeting responses, the analysis of wind characteristics such as turbulence intensity, turbulence length, gust, roughness coefficient, etc must be a priority. Static aerodynamic force coefficients, flutter coefficients, structural damping ratios, aerodynamic damping ratios and natural frequencies affect the analytical responses. The bridge interested in this paper has being been used for 32 years. As the time passes, current terrain conditions around the bridge are different markedly from the conditions it was built 32 years ago. Also, wind environments were considerably varied by the climate change. For this reason, it is necessary to evaluate the turbulence intensity, length, spectrum and roughness coefficient of the bridge site from full-scale measurements using the structural health monitoring system. The evaluation results indicate that wind characteristics of bridge site is analogous to that of open terrain although the bridge is located on the coastal area. To calculate buffeting responses, the analysis variables such as damping ratios, static aerodynamic force coefficients and natural frequency were evaluated from measured data. The analysis was performed with regard to 4 cases. The evaluated variables from measured data are applied to the first and second analysis cases. And the other analysis cases were performed based on Design Guidelines for Steel Cable Supported Bridges. The calculated responses of each analysis cases are compared with the buffeting response measured at less than 25m/s wind speed. It is verified that the responses by the numerical analysis applying the estimated variables based on full-scale measurements are well agreed with the measured actual buffeting responses under wind speed 25m/s. Also, the extreme wind speed corresponding to a recurrence interval 200 years is derived from Gumbel distribution. The derived wind speed for return period of 200 years is 45m/s. Therefore the buffeting responses at wind speed 45m/s is determined by the analysis applying the estimated variables.
Keywords
Buffeting responses; Full-scale measurements; Measured actual buffeting responses; Damping ratios;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 Bae, Y. G., Han, G. M. and Lee, S. L. (2008). "Statistical estimation of wind speed in the gwangyang-myodo region." Journal of Korean Society of Civil Engineering, KSCE, Vol. 28, No. 2, pp. 197-205.
2 Brownjohn, J. M. W., Bocciolone, M., Curami, A., Falco, M. and Zasso, A. (1994). "Humber bridge full-scale measurement campaigns 1990-1991." Journal of Wind Engineering and Industrial aerodynamics, Vol. 52, No. 1-3, pp. 185-218.   DOI
3 Cho, H. N., Cha, C. J. and Baik. H. S. (1989). "Probability-Based estimates of basic design wind speeds in Korea." Journal of Computational Structural Engineering Institute of Korea, COSEIK, Vol. 2, No. 2, pp. 63-72 (in Korean).
4 Davenport, A. G. (1961). "The spectrum of horizontal gustiness near the ground in high wind." Journal of Royal Meteorological Society, Vol. 87, No. 372, pp. 194-211.   DOI
5 Kaimal, J. C. (1973). "Turbulence spectra, length scales and structure parameters in the stable surface layer." Boundary-Layer Meteorology, Vol. 4, No. 1, pp. 289-309.   DOI
6 Kareem, A. and Gurley, K. (1996). "Damping in structures: Its Evaluation and Treatment of Uncertainty." Journal of Wind Engineering and Industrial aerodynamics, Vol. 59, No. 2-3, pp. 131-157.   DOI
7 Kim, B. C. (2013). Buffeting Response of Cable-stayed Bridge using 3-Dimensional Computational Fluid Dynamics, Ph.D. Dissertation, University of Seoul, Korea (in Korean).
8 Kim, B. C. and Yhim, S. S. (2013). "Buffeting response correction method based on dynamic properties of existing cable-stayed bridge." Journal of Korean Society of Civil Engineering, KSCE, Vol. 33, No. 1, pp. 71-80.   DOI
9 Kim, H. K., Choi, S. W. and Kim, Y. H. (2006). "Parametric study on the buffeting response for a cable-stayed bridge." Journal of Korean Society of Civil Engineering, KSCE, Vol. 26, No. 2, pp. 371-382 (in Korean).
10 Kim, H. S., Lee, H. H., Cho, D. Y. and Park, S. K. (2011). "Estimation of design wind speed compatible for long-span bridge in western and southern sea." Journal of The Korea Institute for Structural Maintenance and Inspection, KSMI, Vol. 15, No. 2, pp. 153-160 (in Korean).   DOI
11 Kim, S. H. (2011). Wind analysis of Cable-Stayed Bridge Considering Aerodynamic Admittance Function, Ph.D. Dissertation, University of Seoul, Korea (in Korean).
12 Kong, M. S. (2008). Buffeting Analysis of Suspension Bridges during Erection Sequences, Ph.D. Dissertation, University of Seoul, Korea (in Korean).
13 Korean Society of Civil Engineers (2006). Design Guidelines for Steel Cable-Supported Bridges, KSCE (in Korean).
14 Simiu, E. and Scanlan, R. H. (1996). Wind Effects on Structures, John Wiley and Sons INC, New York, N.Y.
15 Macdonald, J. H. G. (2003). "Evaluation of buffeting predictions of a cable-stayed bridge from full-scale measurements." Journal of wind engineering and industrial aerodynamics, Vol. 91, No. 12-15, pp. 1465-1483.   DOI
16 Ministry of Construction and Transportation (2006). Report of Wind Tunnel Test for 2nd Jindo Grand Bridge, MOCT (in Korean).
17 Miyata, T., Yamada, H., Katsuchi, H. and Kitagawa, M. (2002). "Full-scale measurements of Akashi-Kaikyo Bridge during typhoon." Journal of Wind Engineering and Industrial aerodynamics, Vol. 90, No. 12-15, pp. 1517-1527.   DOI
18 Tamura, Y., Sasaki, A. and Tsukagoshi, H. (1993). "Evaluation of damping ratios of randomly excited buildings using the random decrement technique." Journal of Struct. and Construction Engineering, Vol. 454, No. 454, pp. 29-38.
19 Vogel, R. M. (1986). "The probability plot correlation coefficient test for the Normal, Lognormal, and Gumbel Distributional Hypotheses." Water resource research, Vol. 22, No. 4, pp. 587-590.   DOI
20 von Karman, T. (1948). "Progress in the statistical theory of turbulence." Proceedings of the National Academy of Sciences of the United States of America, Vol. 34, No. 11, p. 530.   DOI
21 Wang, H., Qun, L. A., Tong, G. and Jing, X. (2009). "Field measurement on wind characteristic and buffeting response of the runyang suspension bridge during typhoon matsa." Science in China Series E: Technological Sciences, Vol. 52, No. 5, 2009, pp. 1354-1362.   DOI
22 Xu, Y. L. and Zhu, L. D. (2005). "Buffeting response of long-span cable-supported bridges under skew winds. Part 2: Case study." Journal of Sound and Vibration, Vol. 281, No. 3-5, pp. 675-697.   DOI