Wind and Structures

  • 제30권6호
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  • Pages.649-662
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  • 2020
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Non-uniform wind environment in mountainous terrain and aerostatic stability of a bridge

  • Chen, Xingyu (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Guo, Junjie (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Tang, Haojun (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Li, Yongle (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Wang, Lei (Broadvision Engineering Consultants)
  • 투고 : 2019.11.05
  • 심사 : 2020.02.20
  • 발행 : 2020.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

The existence of a dam has potential effects on the surrounding wind environment especially when it is located in mountainous areas. In this situation, the long-span bridge over the reservoir can easily be exposed to non-uniform incoming flows, affecting its wind-resistance performance. This paper presents a study on the aerostatic stability of such a bridge. Wind tunnel tests were first carried out to investigate the wind environment above a mountainous reservoir. The results show that the angle of attack and the wind speed along the bridge axis show obvious non-uniform characteristics, which is related to the inflow direction. When winds come from the south where the river is winding, the angle of attack varies along the span direction significantly. The finite element model for the bridge was established using ANSYS software, and effects of non-uniform wind loads on the aerostatic stability were computed. Non-uniform angle of attack and wind speed are unfavorable to the aerostatic stability of the bridge, especially the former. When the combined action of non-uniform angle of attack and wind speed is considered, the critical wind speed of aerostatic instability is further reduced. Moreover, the aerostatic stability of the bridge is closely related to the dam height.

키워드

과제정보

The authors are grateful for the financial supports from the National Natural Science Foundation of China (51708463, 51525804), the Fundamental Research Funds for the Central Universities (2682019CX04).

참고문헌

  1. Bilal, M., Birkelund, Y., Homola, M. and Virk, M.S. (2016), "Wind over complex terrain - Microscale modelling with two types of mesoscale winds at Nygardsfjell", Renew. Energy, 99, 647-653. https://doi.org/10.1016/j.renene.2016.07.042.
  2. Blocken, B., van der Hout, A., Dekker, J. and Weiler, O. (2015), "CFD simulation of wind flow over natural complex terrain: Case study with validation by field measurements for Ria de Ferrol, Galicia, Spain", J. Wind Eng. Ind. Aerod., 147, 43-57. https://doi.org/10.1016/j.jweia.2015.09.007.
  3. Boonyapinyo V., Lauhatanon Y. and Lukkunaprasit P. (2006), "Nonlinear aerostatic stability analysis of suspension bridges", Eng. Struct., 28(5), 793-803. https://doi.org/10.1016/j.engstruct.2005.10.008
  4. Cao, S. and Tamura, T. (2006), "Experimental study on roughness effects on turbulent boundary layer flow over a two-dimensional steep hill", J. Wind Eng. Ind. Aerod., 94(1), 1-19. https://doi.org/10.1016/j.jweia.2005.10.001
  5. Cao, S., Wang, T., Ge, Y. and Tamura, Y. (2012), "Numerical study on turbulent boundary layers over two-dimensional hills - Effects of surface roughness and slope", J. Wind Eng. Ind. Aerod., 104-106, 342-349. https://doi.org/10.1016/j.jweia.2012.02.022.
  6. Cheng, J., Jiang, J.J., Xiao, R.C. and Xiang, H.F. (2002), "Nonlinear aerostatic stability analysis of Jiang Yin suspension bridge", Eng. Struct., 24(6), 773-781. https://doi.org/10.1016/S0141-0296(02)00006-8
  7. Cheng, J., Xiao, R.C., Xiang, H.F. and Jiang, J.J. (2003), "NASAB: a finite element software for the nonlinear aerostatic stability analysis of cable-supported bridges", Adv. Eng. Softw., 34(5), 287-296. https://doi.org/10.1016/S0965-9978(03)00010-3.
  8. Ferreira, A.D., Silva, M.C.G., Viegas, D.X. and Lopes, A.G. (1991), "Wind tunnel simulation of the flow around two-dimensional hills", J. Wind Eng. Ind. Aerod., 38, 109-122. https://doi.org/10.1016/0167-6105(91)90033-S.
  9. Guignard, F., Lovallo, M., Laib, M., Golay, J., Kanevski, M., Helbig, N. and Telesca, L. (2019), "Investigating the time dynamics of wind speed in complex terrains by using the Fisher-Shannon method", Physica A, 523, 611-621. https://doi.org/10.1016/j.physa.2019.02.048.
  10. Hu, P., Han, Y., Xu, G., Cai, C.S. and Cheng, W. (2019), "Effects of inhomogeneous wind fields on the aerostatic stability of a long-span cable-stayed bridge located in a mountain-gorge terrain", 33(3), 04020006. J. Aerospace Eng., https://doi.10.1061/(ASCE)AS.1943-5525.0001117.
  11. Hu, P., Li, Y., Huang, G., Kang, R. and Liao, H. (2015), "The appropriate shape of the boundary transition section for a mountain-gorge terrain model in a wind tunnel test", Wind Struct., 20(1), 15-36. https://doi.org/10.12989/was.2015.20.1.015
  12. Hui, M.C.H., Larsen, A. and Xiang, H.F. (2009), "Wind turbulence characteristics study at the Stonecutters Bridge site: Part I-Mean wind and turbulence intensities", J. Wind Eng. Ind. Aerod., 97, 22-36. https://doi.org/10.1016/j.jweia.2008.11.002.
  13. Hunt, J.C.R., Leibovich, S. and Richards, K.J. (1988), "Turbulent shear flows over low hills", Q. J. Roy. Meteor. Soc., 114(484), 1435-1470. https://doi.org/10.1002/qj.49711448405.
  14. Jing, H., Liao, H., Ma, C. and Chen, K. (2019), "Influence of elevated water levels on wind field characteristics at a bridge site", Adv. Struct. Eng., 22(7), 1783-1795. https://doi.org/10.1177/1369433218825048.
  15. Kim, H.G., Lee, C.M., Lim, H.C. and Kyong, N.H. (1997), "An experimental and numerical study on the flow over two-dimensional hills", J. Wind Eng. Ind. Aerod., 66(1), 17-33. https://doi.org/10.1016/S0167-6105(97)00007-X.
  16. Li, Y., Hu, P., Xu, X. and Qiu, J. (2017), "Wind characteristics at bridge site in a deep-cutting gorge by wind tunnel test", J. Wind Eng. Ind. Aerod., 160, 30-46. https://doi.org/10.1016/j.jweia.2016.11.002.
  17. Li, Y., Xu, X., Zhang, M. and Xu, Y. (2017), "Wind tunnel test and numerical simulation of wind characteristics at a bridge site in mountainous terrain", Adv. Struct. Eng., 20(8), 1223-1231. https://doi.org/10.1177/1369433216673377.
  18. Lystad, T.M., Fenerci, A. and Oiseth, O. (2018), "Evaluation of mast measurements and wind tunnel terrain models to describe spatially variable wind field characteristics for long-span bridge design", J. Wind Eng. Ind. Aerod., 179, 558-573. https://doi.org/10.1016/j.jweia.2018.06.021.
  19. Mason, P.J. and King, J.C. (1985), "Measurements and predictions of flow and turbulence over an isolated hill of moderate slope", Q. J. Roy. Meteor. Soc., 111(468), 617-640. https://doi.org/10.1002/qj.49711146818.
  20. Mason, P.J. and Sykes, R.I. (1979), "Flow over an isolated hill of moderate slope", Q. J. Roy. Meteor. Soc., 105(444), 383-395. https://doi.org/10.1002/qj.49710544405.
  21. Ministry of Transport of the People's Republic of China (2018), "Wind-resistant design specification for highway bridges (JTG/T 3360-01-2018)", Beijing: China Communications Press Co., Ltd. (in Chinese)
  22. Mitsuta, Y., Tsukamoto, O. and Nenoi, M. (1983), "Wind characteristics over complex terrain", J. Wind Eng. Ind. Aerod., 15(1), 185-196. https://doi.org/10.1016/0167-6105(83)90189-7.
  23. Ren, H., Laima, S., Chen, W.L., Zhang, B., Guo, A. and Li, H. (2018), "Numerical simulation and prediction of spatial wind field under complex terrain", J. Wind Eng. Ind. Aerod., 180, 49-65. https://doi.org/10.1016/j.jweia.2018.07.012.
  24. Tang, H., Li, Y. and Shum, K.M. (2018), "Flutter performance of long-span suspension bridges under non-uniform inflow", Adv. Struct. Eng., 21(2), 201-213. https://doi.org/10.1177/1369433217713926.
  25. Wang, Y., Wang, B. and Li, Y. (2017), "Numerical simulation of wind characteristics over bridge site in complicated mountains under the influence of reservoir water storage", J. Fuzhou University (Natural Science Edition), 45(4), 466-471. (in Chinese). https://doi.org/10.7631/issn.1000-2243.2017.04.0466.
  26. Xiao, R.C. and Cheng, J. (2004), "Advanced aerostatic stability analysis of suspension bridges", Wind Struct., 7(1), 55-70. https://doi.org/10.12989/was.2004.7.1.055.
  27. Xu, M., Guo, W., Xia, H. and Li, K. (2016), "Nonlinear aerostatic stability analysis of Hutong cable-stayed rail-cum-road bridge", Wind Struct., 23(6), 485-503. https://doi.org/10.12989/was.2016.23.6.485.
  28. Zhang, W.M., Ge, Y.J. and Levitan, M.L. (2013a), "A method for nonlinear aerostatic stability analysis of long-span suspension bridges under yaw wind", Wind Struct., 17(5), 553-564. https://doi.org/10.12989/was.2013.17.5.553.
  29. Zhang, W.M., Ge, Y.J. and Levitan, M.L. (2013b), "Nonlinear aerostatic stability analysis of new suspension bridges with multiple main spans", J Braz. Soc. Mech. Sci. Eng., 35, 143-151. https://doi.org/10.1007/s40430-013-0011-4.
  30. Zhang, X. (2007), "Influence of some factors on the aerodynamic behavior of long-span suspension bridges", J. Wind Eng. Ind. Aerod., 95, 149-164. https://doi.org/10.1016/j.jweia.2006.08.003.
  31. Zhang, Z.T., Ge, Y.J. and Yang, Y.X. (2013), "Torsional stiffness degradation and aerostatic divergence of suspension bridge decks", J. Fluid. Struct., 40, 269-283. https://doi.org/10.1016/j.jfluidstructs.2013.05.001.

피인용 문헌

  1. Study on the Effects of Pedestrians on the Aerostatic Response of a Long-Span Pedestrian Suspension Bridge vol.25, pp.10, 2020, https://doi.org/10.1007/s12205-021-2127-x