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Wind characteristics observation and numerical simulation of cable-stayed bridge site in Chinese western valley areas(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年05期
Page:
44-49
Research Field:
Publishing date:
2011-10-20

Info

Title:
Wind characteristics observation and numerical simulation of cable-stayed bridge site in Chinese western valley areas
Author(s):
ZHANG Yue1;  HU Zhao-tong2;  LIU Jian-xin2
1. School of Construction and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, China; 2. Key Laboratory for Bridge and Tunnel Engineering of Shaanxi Province, Chang’an University, Xi’an 710064, Shaanxi, China
Keywords:
bridge engineering;  mountain;  wind observation;  numerical simulation;  wind characteristics;  wind-profile
PACS:
U441
DOI:
-
Abstract:
The land cover class in mountain terrain is difficult to be determined. So taking the Yumenkou Yellow river bridge in Shanxi province as an example, a data processing system of wind speed observation based on Borland C++ Builder is compiled to get one-year field measured data. Based on the technique of numerical wind tunnel adopts Realizable and SST turbulence modes, the model with the two situations whether there is bridge structure is developed to imitate the bridge site and the wind field under 7 working conditions. The specific wind space distribution and regular pattern of the typical mountain west wind field are gained. The results show that: the wind speed on the bridge site is increased by the influence of gorge wind effect; the value of wind attack angle is larger than that on plain area and the range is from -8° to 9°; the application of wind profile can’t be directly used with the specification, it must be fitted by measured data; the turbulence intensity and gust factor are smaller than the value on common strong wind condition. 2 tabs, 8 figs, 11 refs.

References:

[1] Davenport A G.The spectrum of horizontal gustiness near the ground in high winds[J].Quarterly Journal of the Royal Meteorological Society,1961,372(87):194-211.
[2]Andersen O J,Lovseth J.Gale force maritime wind,t he Froya data base,Part 1:sites and instrumentation,review of the database[J].Journal of Wind Engineering and Industrial Aerodynamics,1995,57(1):97-109.
[3]Sparks P R,Reid G T,Reid W D,et al.Wind conditions in hurricane Hugo by measurement,inference,and experience[J].Journal of Wind Engineering and Industrial Aerodynamics,1992,41(3):55-66.
[4]Maurizi A,Palma J M L M,Castro F A.Numerical simulation of the atmospheric flow in a mountainous region of the North of Portugal[J].Journal of Wind Engineering and Industrial Aerodynamics,1998,74(4):219-228.
[5]Kim H G,Patel V C.Test of turbulence models for wind flow over terrain with separation and recirculation[J].Boundary-Layer Meteorology,2000,94(1):5-17.
[6]张 玥.西部山区谷口处桥位风特性观测与风环境数值模拟研究[D].西安:长安大学,2009.
[7]庞加斌,宋锦忠,林志兴.四渡河峡谷大桥桥位风的湍流特性实测分析[J].中国公路学报,2010,23(3):42-47.PANG Jia-bin,SONG Jin-zhong,LIN Zhi-xing.Field measurement analysis of wind turbulence characteristics of Sidu river valley bridge site[J].China Journal of Highway and Transport,2010,23(3):42-47.
[8]Hui M C H,Larsen A,Xiang H F.Wind turbulence characteristics study at the Stonecutters bridge site,Part I:mean wind and turbulence intensities[J].Journal of Wind Engineering and Industrial Aerodynamics,2009 97(1):22-36.
[9]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 Structure,2006,9(5):387-396.
[10]李人宪,翟婉明.磁悬浮列车横风稳定性的数值分析[J].交通运输工程学报,2001,1(1):99-101.LI Ren-xian,ZHAI Wan-ming.Numerical analysis of crosswind stability of magnetically levitated trains[J].Journal of Traffic and Transportation Engineering,2001,1(1):99-101.
[11]JTG/T D60-01—2004,公路桥梁抗风设计规范[S].

Memo

Memo:
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Last Update: 2011-10-20