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Wind and Structures Volume 39, Number 1, July 2024 , pages 15-30 DOI: https://doi.org/10.12989/was.2024.39.1.015 |
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Near-ground boundary layer wind characteristics analysis of Typhoon "Bailu" based on field measurements |
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Dandan Xia, Li Lin, Liming Dai and Xiaobo Lin
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| Abstract | ||
| In this paper, detailed wind field data of the full path of typhoon "Bailu" were obtained based on site measurements. Typhoon "Bailu" made first landfall southeast of the Taiwan Strait with a wind speed of approximately 30 m/s near the center of the typhoon eye and a second landfall in Dongshang County in Fujian Province. The moving process is classified into 3 regions for analysis and comparison. Detailed analyses of wind characteristics including wind profile, turbulence intensity, gust factor, turbulence integral scale and wind power spectral density function at the full process of the typhoon are conducted, and the findings are presented in this paper. Wind speed shows significant dependence on both the direction of the moving path and the distance between the typhoon center and measurement site. Wind characteristics significantly vary with the moving path of the typhoon center. The relationship between turbulence intensity and gust factor at different regions is investigated. The integral turbulence scales and wind speed are fitted by a Gaussian model. Such analysis and conclusions may provide guidance for future bridge wind-resistant design in engineering applications. | ||
| Key Words | ||
| typhoon "Bailu"; wind-resistant engineering design; wind characteristics; wind field measurement | ||
| Address | ||
| Dandan Xia:Fujian Provincial Key Laboratory of Wind Disaster and Wind Engineering, Xiamen University of Technology, No.600 Ligong Road, Jimei District, Xiamen, 361024, China Li Lin:Fujian Provincial Key Laboratory of Wind Disaster and Wind Engineering, Xiamen University of Technology, No.600 Ligong Road, Jimei District, Xiamen, 361024, China Liming Dai:Department of Industrial Systems Engineering, University of Regina, 3737 Wascana Parkway, Regina, SK, S4S 0A2SK S4S0A2, Canada Xiaobo Lin:Department of Civil Engineering, Fuzhou University, No.2 Wulongjiang North Road, Fuzhou, 350108, China | ||