摘要The Baling River Bridge is a long-span bridge located in a special mountainous area. The site has a very complicated wind field that is representative of many cases in west China. A terrain model that simulates the practical status of the wind field in the bridge site was tested in a wind tunnel to confirm the design of basic wind speed. Other characteristic wind parameters were also determined to provide a reference for similar bridge designation in the future. The test method was researched to identify its correctness and reliability, and the Von Karman pulse wind speed PSD was used. The wind speed evidently increased at the height of the middle span girder because of the effect of narrowing. Furthermore, the wind profile distribution was not uniform. The average attack angle range was -4.7° to+4.7°, obviously larger than the Wind resistant design specifications of highway bridges required (±3°). The Power spectral density function(PSD) of lateral and vertical wind speed was close to that listed in the criteria at the high-frequency part of the bridge; no clear differences at the low-frequency part were observed.
Abstract：The Baling River Bridge is a long-span bridge located in a special mountainous area. The site has a very complicated wind field that is representative of many cases in west China. A terrain model that simulates the practical status of the wind field in the bridge site was tested in a wind tunnel to confirm the design of basic wind speed. Other characteristic wind parameters were also determined to provide a reference for similar bridge designation in the future. The test method was researched to identify its correctness and reliability, and the Von Karman pulse wind speed PSD was used. The wind speed evidently increased at the height of the middle span girder because of the effect of narrowing. Furthermore, the wind profile distribution was not uniform. The average attack angle range was -4.7° to+4.7°, obviously larger than the Wind resistant design specifications of highway bridges required (±3°). The Power spectral density function(PSD) of lateral and vertical wind speed was close to that listed in the criteria at the high-frequency part of the bridge; no clear differences at the low-frequency part were observed.
徐洪涛, 何勇, 廖海黎, 马存明, 鲜荣. 山区峡谷大跨度桥梁桥址风场试验研究[J]. Journal of Highway and Transportation Research and Development, 2013, 7(1): 44-50.
XU Hong-tao, HE Yong, LIAO Hai-li, MA Cun-ming, XIAN Rong. Experimental Study of a Wind Field in a Long-span Bridge Site Located in Mountainous Valley Terrain. Journal of Highway and Transportation Research and Development, 2013, 7(1): 44-50.
[1] FU Baopu. Mountain Climate[M]. Beijing:Science Press, 1983.(in Chinese)
[2] KOSSMANN M, VOEGTLIN R, CORSMEIER U, et al. Aspects of the Convective Boundary Layer Structure over Complex Terrain[J]. Atmospheric Environment, 1998, 32(7):1323-1348.
[3] RAUPACH M R, FINNINGAN J J. The Influence of Topography on Meteorological Variables and Surface-atmosphere Interaction[J]. Journal of Hydrology, 1997, 190:182-213.
[4] CARPENTER P, LOCKE N. Investigation of Wind Speeds over Multiple Two-Dimensional Hills[J]. Journal of Wind Engineering and Industrial Aerodynamics, 1999, 83(1-3):109-120.
[5] JTG/T D60-01-2004,Wind Resistance Design Code of Highway Bridge[S]. (in Chinese)
[6] SHUAI Shizhang, WU Zhanping, LIU Qing. Wind Parameter Preliminary Analysis and Decision on Design Wind Speed of the Baling River Bridge[J]. Journal of Guizhou Meteorology, 2005, 29(2):12-15.(in Chinese)
[7] CHEN Zhengqing, LI Chunguang, ZHANG Zhitian,et al. Model Test Study of Wind Field Characteristics of Long-span Bridge Site in Mountainous Valley Terrain[J]. Journal of Experiments in Fluid Mechanics, 2008, 22(3):54-59.(in Chinese)
[8] PANG Jiabin. Field Investigation and Wind Tunnel Simulation of Strong Wind Characteristics in Coastal and Mountainous Regions[D]. Shanghai:Tongji University,2006.(in Chinese)
[9] CHEN Yingjun, YU Xizhe. Calculation of Wind Load[M]. Beijing:China Railway Press, 1998.(in Chinese)
[10] KAIMAL J C,WYNGAARD J C, IZUMI Y, et al. Spectral Characteristics of Surface Layer Turbulence[J]. Quarterly Journal of the Royal Meteorological Society, 1972, 98:563-589.
[11] PANOFSKY H A, MCCORMICK R A. The spectrum of Vertical Velocity Near the Surface[J]. Quarterly Journal of the Royal Meteorological Society, 1960, 86:546-564.
[12] VON KARMAN T. Progress in the Statistical Theory of Turbulence[J].Proceedings of the National Academy of Sciences of USA, 1948, 34(11):530-539.
[13] XIANG Haifan. Wind Resistance Design Guide of Highway Bridge[M]. Beijing:China Communications Press,1996.(in Chinese)
[1]
常柱刚, 王林凯, 夏飞龙. 基于CV NewMark-b法桥梁风致振动FSI数值模拟[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 28-37.
2013, Vol. 7 
