Structural Engineering and Mechanics

  • 제72권5호
  • /
  • Pages.541-555
  • /
  • 2019
  • /
  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Studies on the influence factors of wind dynamic responses on hyperbolic cooling tower shells

  • ZHANG, Jun-Feng (School of Civil Engineering, Zhengzhou University) ;
  • LIU, Qing-Shuai (School of Civil Engineering, Zhengzhou University) ;
  • GE, Yao-Jun (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • ZHAO, Lin (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
  • 투고 : 2018.12.29
  • 심사 : 2019.03.21
  • 발행 : 2019.12.10
⟨ 이전 논문 다음 논문 ⟩

초록

Wind induced dynamic responses on hyperbolic cooling tower (HCT) shells are complicated functions of structure and wind properties, such as the fundamental frequency fmin, damping ratio ζ, wind velocity V, correlationship in meridian direction and so on, but comprehensions on the sensitivities of the dynamic responses to these four factors are still limited and disagree from each other. Following the dynamic calculation in time domain, features of dynamic effects were elaborated, focusing on the background and resonant components σB and σR, and their contributions to the total rms value σT. The σR is always less than σB when only the maximum σT along latitude is concerned and the contribution of σR to σT varies with responses and locations, but the σR couldn't be neglected for structural design. Then, parameters of the above four factors were artificially adjusted respectively and their influences on the gust responses were illustrated. The relationships of σR and the former three factors were expressed by fitted equations which shows certain differences from the existing equations. Moreover, a new strategy for wind tunnel tests aiming at surface pressures and the following dynamic calculations, which demands less experiment equipment, was proposed according to the influence from meridian correlationship.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation of China

The authors would like to gratefully acknowledge the supports of National Science Foundation of China (51508523).

참고문헌

  1. Abu-Sitta, S.H. and Hashish, M.G. (1973), "Dynamic wind stresses in hyperbolic cooling towers", J. Struct. Div., 99(9), 1823-1835. https://doi.org/10.1061/JSDEAG.0003600
  2. Armitt, J. (1973), "Vibration of cooling towers", Paper 311 in Proceedings International Symposium Vibration Problems in Industry, Keswick, England, April. 1-19.
  3. Armitt, J. (1980), "Wind loading on cooling towers", J. Struct. Div., 1980, 106(3), 623-641. https://doi.org/10.1061/JSDEAG.0005384
  4. Babu, G.R., Rajan, S.S., Harikrishna, P., Lakshmanan, N. and Arunachalam, S. (2013), "Experimental determination of wind-induced response on a model of natural draught cooling tower", Exp. Techniques, 37(1), 35-46. https://doi.org/10.1111/j.1747-1567.2011.00715.x.
  5. Basu, P.K. and Gould, P.L. (1980), "Cooling towers using measured wind data", J. Struct. Div., 106(3), 579-600. https://doi.org/10.1061/JSDEAG.0005382
  6. BS 4485 Part 4. (1996), Code of Practice for Structural Design and Construction-Water Cooling Towers, British Standard Institution, London.
  7. Busch, D., Harte, R., and Niemann, H. J. (1998), "Study of a proposed 200m high natural draught cooling tower at power plant Frimmersdorf/Germany", Eng. Struct., 20(10), 920-927. https://doi.org/10.1016/S0141-0296(97)00120-X
  8. Chen, K., Wei, Q.D. (2003), "Wind tunnel tests on the wind-induced vibrations", Proceedings of the 11th National Conference on Structural Wind Engineering, Sanya, China, 177-182.
  9. Davenport, A.G. and Isyumov, N. (1967), Written Contribution of Session 3 Proc. 1st NDCT, London, June. 97-100.
  10. GB/T 50102-2014. (2014), Code for design of cooling for industrial recirculating water, Ministry of Construction, P.R.C.
  11. Hashish, M.G. and Abu-Sitta, S.H. (1974), "Response of hyperbolic cooling towers to turbulent wind", J. Struct. Div., 1974, 100(5), 1037-1051. https://doi.org/10.1061/JSDEAG.0003775
  12. Isyumov, N., Abu-Sitta, S.H. and Davenport, A.G. (1972), "Approaches to the design of hyperbolic cooling towers against the dynamic action of wind and earthquakes", Bull. Int. Assoc. Shell Struct., 48, 35-47.
  13. Kapania, R.K. and Yang, T.Y. (1984), "Time domain random wind response of cooling tower", J. Eng. Mech., 110(10), 1524-1543. https://doi.org/10.1061/(ASCE)0733-9399(1984)110:10(1524).
  14. Kasperski, M. and Niemann, H.J. (1988) "On the correlation of dynamic wind loads and structural response of natural-draught cooling towers", J. Wind Eng. Ind. Aerod., 30(1-3), 67-75. https://doi.org/10.1016/0167-6105(88)90072-4.
  15. Ke, S.T., Ge, Y.J., Zhao, L. and Tamura, Y. (2012), "A new methodology for analysis of equivalent static wind loads on supper-large cooling towers", J. Wind Eng. Ind. Aerod., 111, 30-39. https://doi.org/10.1016/j.jweia.2012.08.001.
  16. Ke, S.T., Ge, Y.J. and Zhao, L. (2015), "Wind-induced vibration characteristics and parametric analysis of large hyperbolic cooling towers with different feature sizes", Struct. Eng. Mech., 54(5), 891-908. https://doi.org/10.12989/sem.2015.54.5.891.
  17. Ke, S.T., Wang, H. and Ge, Y.J. (2018a), "Multi-dimensional extreme aerodynamic load calculation in super-large cooling towers under typical four-tower arrangements", Wind Struct., 25(2), 101-129. https://doi.org/10.12989/was.2017.25.2.101.
  18. Ke, S.T., Du, L.Y., Ge, Y.J. and Tamura, Y. (2018b), "Multi-dimensional wind vibration coefficients under suction for ultra-large cooling towers considering ventilation rates of louvers", Struct. Eng. Mech., 66(2), 273-283. https://doi.org/10.12989/sem.2018.66.2.273.
  19. Ke, S.T., Yu, W., Xu, L., Ge, Y.J. and Tamura, Y. (2018c), "Identification of damping ratio and its influences on wind- and earthquake-induced effects for large cooling towers", Struct. Des. Tall Spec., 27(12), 1-20. https://doi.org/10.1002/tal.1488.
  20. Lu, W.D., Wang, Y.Q., Peng, J.X. and Lin, B.Q. (1982), "Response of hyperbolic cooling tower to turbulent wind", Pro. CSEE, (1), 45-61.
  21. Niemann, H.J. (1980), "Wind effects on cooling-tower shells", J. Struct. Div., ASCE, 1980, 106(3), 643-661. https://doi.org/10.1061/JSDEAG.0005385
  22. Niemann, H.J. (1984), "Modelling of wind loads with regard to gust effects", Eng. Struct., 6(4), 274-280. https://doi.org/10.1016/0141-0296(84)90024-5.
  23. Niemann, H.J. and Ruhwedel, J. (1980), "Full-scale and model tests on wind-induced, static and dynamic stresses in cooling tower shells", Eng. Struct., 2(2), 81-89. https://doi.org/10.1016/0141-0296(80)90034-6.
  24. Noh, S.Y. and Lee, S.Y. (2012), "Evaluation of the natural draught cooling tower shell using linearly and non-linearly numerical analysis", J. Vibroeng., 14(3), 1011-1020.
  25. Singh, M.P. and Gupta, A.K. (1976), "Gust factors for hyperbolic cooling towers", J. Struct. Div., 102(2), 371-386. https://doi.org/10.1061/JSDEAG.0004283
  26. Sollenberger, N.J., Scanlan, R.H. and Billington, D.P. (1980), "Wind loading and response of cooling towers", J. Struct. Div., ASCE, 106(3), 601-621. https://doi.org/10.1061/JSDEAG.0005383
  27. Steinmetz, R.L., Abel, J.F. and Billington, D.P. (1978), "Hyperbolic cooling tower dynamic response to wind", J. Struct. Div., ASCE, 104(1), 35-53. https://doi.org/10.1061/JSDEAG.0004848
  28. VGB-R 610Ue (2005), VGB-Guideline: Structural design of cooling tower-technical guideline for the structural design, computation and execution of cooling towers, BTR Bautechnik bei Kuhlturmen, Essen.
  29. Zhang, J.F., Ge, Y.J. and Zhao, L. (2013) "Influence of latitude wind pressure distribution on the responses of hyperbolodial cooling tower shell", Wind Struct., 16(6), 579-601. https://doi.org/10.12989/was.2013.16.6.579
  30. Zhang, J.F., Ge, Y.J., Zhao, L. and Ke, S.T. (2013), "Wind tunnel study on the three dimensional flow and spatial correlation properties of wind loads on hyperboloidal cooling towers", Eng. Mech., 30(9), 234-242.
  31. Zhang, J.F., Ge, Y.J., Zhao, L., and Zhu, B. (2017), "Wind induced dynamic responses on hyperbolic cooling tower shells and the equivalent static wind load", J. Wind Eng. Ind. Aerod., 169, 280-289. https://doi.org/10.1016/j.jweia.2017.08.002.
  32. Zhao, L., Chen, X., Ke, S.T. and Ge, Y.J. (2014), "Aerodynamic and aero-elastic performances of super-large cooling towers", Wind Struct., 19(4), 443-465. https://doi.org/10.12989/was.2014.19.4.443.
  33. Zhao, L., Ge, Y.J. and Cao, F.C. (2008), "Equivalent beam-net design theory of aero-elastic model about hyperbolic thin-shell cooling towers and its experimental investigation", J. Vibra. Eng., 21(1), 31-37. https://doi.org/10.3969/j.issn.1004-4523.2008.01.006
  34. Zhao, L., Zhan, Y.Y. and Ge, Y.J. (2018), "Wind-induced equivalent static interference criteria and its effects on cooling towers with complex arrangements", Eng. Struct., 172, 141-153. https://doi.org/10.1016/j.engstruct.2018.05.117.
  35. Zou, Y.F., Niu, H.W., Chen, Z.Q. (2013), "Wind tunnel test on wind-induced response of cooling tower based on full aeroelastic model", J. Build. Struct., 34(6), 60-67.