DOI QR코드

DOI QR Code

Wind-rain-induced vibration test and analytical method of high-voltage transmission tower

  • Li, Hong-Nan (Faculty of Infrastructure Engineering, Dalian University of Technology) ;
  • Tang, Shun-Yong (Faculty of Infrastructure Engineering, Dalian University of Technology) ;
  • Yi, Ting-Hua (Faculty of Infrastructure Engineering, Dalian University of Technology)
  • 투고 : 2012.04.23
  • 심사 : 2013.10.20
  • 발행 : 2013.11.25

초록

A new computational approach for the rain load on the transmission tower is presented to obtain the responses of system subjected to the wind and rain combined excitations. First of all, according to the similarity theory, the aeroelastic modeling of high-voltage transmission tower is introduced and two kinds of typical aeroelastic models of transmission towers are manufactured for the wind tunnel tests, which are the antelope horn tower and pole tower. And then, a formula for the pressure time history of rain loads on the tower structure is put forward. The dynamic response analyses and experiments for the two kinds of models are carried out under the wind-induced and wind-rain-induced actions with the uniform and turbulent flow. It has been shown that the results of wind-rain-induced responses are bigger than those of only wind-induced responses and the rain load influence on the transmission tower can't be neglected during the strong rainstorm. The results calculated by the proposed method have a good agreement with those by the wind tunnel test. In addition, the wind-rain-induced responses along and across the wind direction are in the same order of response magnitude of towers.

키워드

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피인용 문헌

  1. A Comparative Study on Frequency Sensitivity of a Transmission Tower vol.2015, 2015, https://doi.org/10.1155/2015/610416
  2. Fragility analysis and estimation of collapse status for transmission tower subjected to wind and rain loads vol.58, 2016, https://doi.org/10.1016/j.strusafe.2015.08.002
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  15. A simplified method for estimating fundamental periods of pylons in overhead electricity transmission systems vol.19, pp.2, 2013, https://doi.org/10.12989/eas.2020.19.2.119
  16. Modal parameters of a transmission tower considering the coupling effects between the tower and lines vol.220, pp.None, 2020, https://doi.org/10.1016/j.engstruct.2020.110947
  17. Optimization of VEDs for Vibration Control of Transmission Line Tower vol.2021, pp.None, 2013, https://doi.org/10.1155/2021/9060414
  18. Vortex induced vibration and its controlling of long span Cross-Rope Suspension transmission line with tension insulator vol.78, pp.1, 2013, https://doi.org/10.12989/sem.2021.78.1.087
  19. Failure analysis of a transmission line considering the joint probability distribution of wind speed and rain intensity vol.233, pp.None, 2013, https://doi.org/10.1016/j.engstruct.2021.111913