Wind and Structures

  • 제13권5호
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  • Pages.451-469
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  • 2010
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Finite element modelling of transmission line structures under tornado wind loading

  • Hamada, A. (Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Western Ontario) ;
  • El Damatty, A.A. (Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Western Ontario) ;
  • Hangan, H. (Alan G. Davenport Wind Engineering Group, The Boundary Layer Wind Tunnel Laboratory, Faculty of Engineering, The University of Western Ontario) ;
  • Shehata, A.Y. (Atomic Energy of Canada Limited)
  • 투고 : 2009.11.10
  • 심사 : 2010.03.09
  • 발행 : 2010.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

The majority of weather-related failures of transmission line structures that have occurred in the past have been attributed to high intensity localized wind events, in the form of tornadoes and downbursts. A numerical scheme is developed in the current study to assess the performance of transmission lines under tornado wind load events. The tornado wind field is based on a model scale Computational Fluid Dynamic (CFD) analysis that was conducted and validated in a previous study. Using field measurements and code specifications, the CFD model data is used to estimate the wind fields for F4 and F2 full scale tornadoes. The wind forces associated with these tornado fields are evaluated and later incorporated into a nonlinear finite element three-dimensional model for the transmission line system, which includes a simulation for the towers and the conductors. A comparison is carried between the forces in the members resulting from the tornadoes, and those obtained using the conventional design wind loads. The study reveals the importance of considering tornadoes when designing transmission line structures.

키워드

참고문헌

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피인용 문헌

  1. F2 tornado velocity profiles critical for transmission line structures vol.106, 2016, https://doi.org/10.1016/j.engstruct.2015.10.020
  2. Tornado hazard for structural engineering 2016, https://doi.org/10.1007/s11069-016-2392-z
  3. Finite element modelling of pre-stressed concrete poles under downbursts and tornadoes vol.153, 2017, https://doi.org/10.1016/j.engstruct.2017.10.047
  4. Dynamic Responses and Vibration Control of the Transmission Tower-Line System: A State-of-the-Art Review vol.2014, 2014, https://doi.org/10.1155/2014/538457
  5. Behaviour of guyed transmission line structures under tornado wind loading vol.89, pp.11-12, 2011, https://doi.org/10.1016/j.compstruc.2011.01.015
  6. Finite element modelling of self-supported transmission lines under tornado loading vol.18, pp.5, 2014, https://doi.org/10.12989/was.2014.18.5.473
  7. Behaviour of transmission line conductors under tornado wind vol.22, pp.3, 2016, https://doi.org/10.12989/was.2016.22.3.369
  8. The response of a guyed transmission line system to boundary layer wind vol.139, 2017, https://doi.org/10.1016/j.engstruct.2017.01.047
  9. Effect of net structures on wall-free non-stationary air heat vortices vol.64, 2013, https://doi.org/10.1016/j.ijheatmasstransfer.2013.05.008
  10. Failure analysis of guyed transmission lines during F2 tornado event vol.85, 2015, https://doi.org/10.1016/j.engstruct.2014.11.045
  11. Current and Future Directions for Wind Research at Western: A New Quantum Leap in Wind Research through the Wind Engineering, Energy and Environment (WindEEE) Dome vol.35, pp.4, 2010, https://doi.org/10.5359/jawe.35.277
  12. Performance of structures and infrastructure facilities during an EF4 Tornado in Yancheng vol.27, pp.2, 2010, https://doi.org/10.12989/was.2018.27.2.137
  13. Risk-Based Reliability and Cost Analysis of Utility Poles Subjected to Tornado Hazard vol.32, pp.4, 2010, https://doi.org/10.1061/(asce)as.1943-5525.0001029
  14. Reliability-Based Assessment and Cost Analysis of Power Distribution Systems at Risk of Tornado Hazard vol.6, pp.2, 2010, https://doi.org/10.1061/ajrua6.0001055
  15. Analytical Approach to Characterize Tornado-Induced Loads on Lattice Structures vol.146, pp.6, 2020, https://doi.org/10.1061/(asce)st.1943-541x.0002660
  16. Empirical numerical model of tornadic flow fields and load effects vol.32, pp.4, 2010, https://doi.org/10.12989/was.2021.32.4.371