Comparative analysis on measured wind characteristics of typical typhoons at Sutong bridge

被引：2
|
作者：
Wang H. [1 ]
Zou Z. [1 ]
Tao T. [1 ]
Mao J. [1 ]
Xu Z. [1 ]
机构：
[1] Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing
来源：
| 2018年 / Southeast University卷 / 48期
关键词：
Field measurement; Sutong bridge; Typhoon; Typhoon eyes; Wind characteristics;
D O I：
10.3969/j.issn.1001-0505.2018.02.024
中图分类号：
学科分类号：
摘要：
In order to investigate the features and differences of wind characteristics of typhoon in different regions, a comparative study on the wind characteristics of typhoon whether the typhoon eyes passing by the bridge site or not is carried out based on 72 h measured wind samples of Kalmaegi and Haikui at Sutong bridge. First, the mean wind speeds and the mean wind directions of these two kinds of typhoon are compared by the vector decomposition method. Then, the turbulence intensities, the gust factors and the turbulence integral scales of these two kinds of typhoon are calculated, and the nonlinear relationship between the gust factors and the turbulence intensities as well as the probability density of the turbulence integral scales are fitted by using the least square method. Finally, the turbulence power spectral densities of these two kinds of typhoon are calculated, and compared with the spectral model recommended by the specification. The analytical results indicate that when the measurement field is closer to the typhoon center, the turbulence intensity and the gust factor are larger while the turbulence integral scale is smaller. There is a strong correlation between the gust factor and the turbulence intensity. The power spectral density is related to the mean wind speed and the turbulence intensity. There is a certain deviation between the measured wind characteristics of these two kinds of typhoon and the recommended values by the specification. © 2018, Editorial Department of Journal of Southeast University. All right reserved.
引用
收藏
页码：342 / 349
页数：7
相关论文
共 12 条
  • [1] Simiu E., Scanlan R.H., Wind Effects on Structures, pp. 59-64, (1996)
  • [2] Li A., Wang H., Xie Y., Experimental study on strong wind characteristics of Runyang suspension bridge based on SHMS, Journal of Southeast University (Natural Science Edition), 37, 3, pp. 508-511, (2007)
  • [3] Brownjohn J.M.W., Bocciolone M., Curami A., Et al., Humber bridge full-scale measurement campaigns 1990-1991, Journal of Wind Engineering and Industrial Aerodynamics, 52, pp. 185-218, (1994)
  • [4] Miyata T., Yamada H., Katsuchi H., Et al., Full-scale measurement of Akashi-Kaikyo bridge during typhoon, Journal of Wind Engineering and Industrial Aerodynamics, 90, 12, pp. 1517-1527, (2002)
  • [5] Xu Y.L., Zhu L.D., Wong K.Y., Et al., Field measurement results of Tsing Ma suspension bridge during typhoon Victor, Structural Engineering and Mechanics, 10, 6, pp. 545-559, (2000)
  • [6] Wang H., Tao T., Li A., Et al., Structural health monitoring system for Sutong cable-stayed bridge, Smart Structures and Systems, 18, 2, pp. 317-334, (2016)
  • [7] Tao T., Wang H., Wu T., Comparative study of the wind characteristics of a strong wind event based on stationary and nonstationary models, Journal of Structural Engineering, 143, 5, (2017)
  • [8] von Karman T., Progress in the statistical theory of turbulence, Proc Natl Acad Sci USA, 34, 11, pp. 530-539, (1948)
  • [9] Ishizaki H., Wind profiles, turbulence intensities and gust factors for design in typhoon-prone regions, Journal of Wind Engineering and Industrial Aerodynamics, 13, 1, pp. 55-66, (1983)
  • [10] Choi E.C.C., Gradient height and velocity profile during typhoons, Journal of Wind Engineering and Industrial Aerodynamics, 13, 1, pp. 31-41, (1983)
12