[1] Wang Hao, Li Aiqun, Guo Tong, Xie Jing, et al. Comparable study on typhoon and strong northern wind characteristicsof the Runyang Suspension Bridge based on field tests [J]. Journal of Southeast University (English Edition), 2009, 25 (1): 99-103. [doi:10.3969/j.issn.1003-7985.2009.01.021]
Copy
Comparable study on typhoon and strong northern wind characteristicsof the Runyang Suspension Bridge based on field tests(
)
基于现场实测的润扬悬索桥桥址区台风与强北风特性对比
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 25
- Issue:
- 2009 1
- Page:
- 99-103
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2009-03-30
Info
- Title:
- Comparable study on typhoon and strong northern wind characteristicsof the Runyang Suspension Bridge based on field tests
- 基于现场实测的润扬悬索桥桥址区台风与强北风特性对比
- Author(s):
- Wang Hao, Li Aiqun, Guo Tong, Xie Jing, Hu Ruomei
- Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China
- Keywords:
- suspension bridge; typhoon; northern wind; wind characteristics; field test; structural health monitoring system
- PACS:
- U448;V321
- DOI:
- 10.3969/j.issn.1003-7985.2009.01.021
- Abstract:
- The strong wind characteristics of the Runyang Suspension Bridge(RSB)including the wind speed and direction, the turbulence intensity, the turbulence integral length and power spectrum are analyzed based on measurement data from the wind environment monitoring subsystem of the structural health monitoring system(SHMS)of the RSB and field tests during strong winds.The differences between the typhoon and the strong northern wind are especially studied.It is found that the mean wind speed of the strong northern wind is a little smaller and the mean wind direction is more stable than that of the typhoon. The turbulence intensity of both the typhoon and the strong northern wind is greater than the values suggested in Chinese code, and the turbulence integral length difference between the typhoon and a strong northern wind is not clear.As for the along-wind turbulence power spectrum, the spectrum of the strong northern wind can fit the Kaimal spectrum better than that of the typhoon.The obtained results can provide measurement data for founding a strong wind characteristic database and determining the strong wind characteristic parameter values of the RSB.
- 综合利用润扬结构健康监测系统(SHMS)风环境子系统实时记录的各种参数时程数据以及强风期间上桥实测强风样本, 分析得到了桥址区实测强风的风速和风向、紊流强度、紊流积分尺度、紊流功率谱密度函数等特性, 重点对比研究了台风与强北风特性之间的差异性.结果表明, 与台风相比, 强北风的平均风速略小、平均风向更加稳定;台风与强北风的实测紊流强度值均比规范建议值大;台风与强北风的紊流积分尺度之间无明显的规律性;就顺风向紊流功率谱而言, 强北风与Kaimal谱更加吻合.研究结果为建立桥址区台风特性数据库, 确定当地强风特性参数的合理取值提供了实测依据.
References:
[1] Xiang Haifan. Modern theory and practice on bridge wind resistance [M].Beijing:China Communications Press, 2005.(in Chinese)
[2] Simiu E, Scanlan R H. Wind effects on structures [M].New York:John Wiley & Sons, 1996.
[3] Chen Zhengqing.Wind engineering of bridges [M].Beijing:China Communications Press, 2005.(in Chinese)
[4] Harikrishna P, Annadurai A, Gomathinayagam.Full scale measurements of the structural response of a 50 m guyed mast under wind loading [J].Engineering Structures, 2003, 25(7):859-867.
[5] Pang Jiabin, Lin Zhixing, Ge Yaojun.Field measurements of strong wind characteristics in Pudong district [J].Experiments and Measurements in Fluid Mechanics, 2002, 16(3):32-39.(in Chinese)
[6] Xu Y L, Zhu L D, Wong K Y.Field measurement results of Tsing Ma Suspension Bridge during typhoon Victor [J].Structural Engineering and Mechanics, 2000, 10(6):545-559.
[7] Law S S, Bu J Q, Zhu X Q.Wind characteristics of typhoon Dujuan as measured at a 50 m guyed mast [J].Wind and Structures, 2006, 9(5):387-396.
[8] Li Q S, Wu J R, Liang S G, et al.Full-scale measurements and numerical evaluation of wind-induced vibration of a 63-story reinforced concrete super tall building [J].Engineering Structures, 2004, 26(12):1779-1794.
[9] Wang Yayong, Zhang Ziping, He Jun, et al.Measurements on wind and dynamic properties of Diwang Plaza in Shen-zhen city [J].Journal of Building Structures, 1998, 19(3):58-63.(in Chinese)
[10] Li Aiqun, Wang Hao, Xie Yishun.Experimental study on strong wind characteristics of Runyang Suspension Bridge based on SHMS [J].Journal of Southeast University:Natural Science Edition, 2007, 37(3):508-511.(in Chinese)
[11] Xiang Haifan.Bridge wind resistance guide for the highway bridges [M].Beijing:China Communications Press, 1996.(in Chinese)
[12] Meteorology Research Institute of Jiangsu Province. Preliminary design study report on Runyang Yangtze River Bridge(special topic for wind speed observation)[R].Nanjing: Meteorology Research Institute of Jiangsu Province, 2002.(in Chinese)
Memo
- Memo:
-
Biography: Wang Hao(1980—), male, doctor, lecturer, whzjn@sina.com.
Foundation items: The National High Technology Research and Development Program of China(863 Program)(No. 2006AA04Z416), the Key Project of the National Natural Science Foundation of China(No. 50538020), the National Science Fund for Distinguished Young Scholars(No. 50725828), the National Natural Science Foundation of China for Young Scholars(No. 50608017), the Ph.D. Programs Foundation of Ministry of Education of China(No.200802861012).
Citation: Wang Hao, Li Aiqun, Guo Tong, et al.Comparable study on typhoon and strong northern wind characteristics of Runyang Suspension Bridge based on field tests[J].Journal of Southeast University(English Edition), 2009, 25(1):99-103.