Dynamic Response of Self-Supported Power Transmission Tower Subjected to Wind Action

  • Authors

    • Nur Hamizah Hamzah
    • Fathoni Usman
    • Mohd Yazee Mat Yatim
  • dynamic response, natural frequency, self-supported transmission tower, wind action, wind time series
  • A power transmission tower carries electrical transmission conductor at adequate distance from the ground. It must withstand all nature’s forces besides its self-weight. In structural analysis, natural frequency, mode shape and damping ratio are used to define the structural dynamic properties which relate to the basic structural features. This paper described the dynamic analysis including the modal and the time history analysis on each segment of the self-supported transmission tower to understand its dynamic responses subjected to wind action. The factors such as different height above ground, a different value of wind speed and different wind angle of attack were included in this study to see the influence of those factors towards dynamic response of the structure. The contribution of the wind towards the displacement of the structure is determined in this study by comparing the result obtained in a linear static analysis which considered the load combination without and with the presence of wind action. It was found that displacement using dynamic analysis is bigger than static linear analysis. The result illustrates that the studied factors gave a significant effect on the dynamic response of the structure and the findings indicate that dynamic analysis is vital in structural design.

  • References

    1. [1] S. Shivanagi, S. Kulkarni, K. Gurunath, S. Mulla, and S. Kulkarni, “Analysis and Design of Trasmission Line Towerâ€, International Journal of Emerging Research in Managemet and Technology, vol. 6, no. 2, (2017), pp. 123–129.

      [2] C. Lu, Y. Ou, X. Ma, and M. Je, “Structural Analysis of Lattice Steel Transmission Towers : A Reviewâ€, Journal of Steel Structures and Constructions, vol. 2, no. 1, (2016), pp. 1–11.

      [3] American Society of Civil Engineers, “ASCE Manual 74, Guidelines for Electrical Transmission Line Structural Loadingâ€, ASCE, New York, (2009).

      [4] American Society of Civil Engineers, “ASCE 7-05, Minimum Design Loads for Buildings and Other Structuresâ€, ASCE, New York, (2002).

      [5] Standards Australia, “AS 3995 - Design of Steel Lattice Towers and Mastsâ€, Standard Australia, NSW, (1994)

      [6] Standards Australia, “AS/NZS 1170.2:2002 Structural Design Actions - Wind Actionsâ€, Standard Australia, NSW, (2010).

      [7] N. H. Hamzah, F. Usman, and R. C. Omar, “Geospatial Study for Wind Analysis and Design Codes for Wind Loading : A Reviewâ€, International Journal of Advanced and Applied Sciences, vol. 5, no. 1, (2018), pp. 94–100.

      [8] S. A. Kamarudin, F. Usman, and R. C. Omar, “Evaluation Of Overhead Transmission Tower Subjected To Predominantly Wind Loadingâ€, International Journal of Civil Engineering and Geo-Environment, vol. 6, no. January 2017, (2017).

      [9] S. A. Kamarudin, F. Usman, and I. N. Z. Baharuddin, “Review on Analysis and Design of Lattice Steel Structure of Overhead Transmission Towerâ€, International Journal of Advanced and Applied Sciences, vol. 5, no. 1, (2018), pp. 73–80.

      [10] A. Dua, M. Clobes, and T. Höbbel, “Dynamic Analysis of Overhead Transmission Line under Turbulent Wind Loadingâ€, Open Journal of Civil Engineering, vol. 15, no. 1, (2015), pp. 46–54.

      [11] S. Ahmad and E. Ansari, “Response of Transmission Towers Subjected to Tornado Loadsâ€, in The Seventh Asia-Pasific Conference on Wind Engineering, no. 1996, (2009).

      [12] L. Srikanth and D. Neelima Satyam, “Dynamic Analysis of Transmission Line Towers†,International Journal Civil Environmetal Engineering, vol. 8, no. 4, (2014), pp. 425–428.

      [13] M. J. Glanville and K. C. S. Kwok, “Dynamic characteristics and wind induced response of a steel frame towerâ€, Journal of Wind Engineering and Industrial Aerodynamic, vol. 54–55, no. 1995, (1995), pp. 133–149.

      [14] A. Brewer, “Dynamic Wind Load Modelling of High Overhead Transmission Line Towersâ€, Master Degree Thesis, Faculty of Civil and Environmental Engineering,University of Iceland, (2017).

      [15] C. C. Zang, J. M. Christian, J. K. Yuan, J. Sment, A. C. Moya, C. K. Ho, and Z. F. Wang, “Numerical Simulation of Wind Loads and Wind Induced Dynamic Response of Heliostatsâ€, Energy Procedia, vol. 49, (2013), pp. 1582–1591.

      [16] P. Li, B. Chen, W. Xie, and X. Xiao, “A Comparative Study on Frequency Sensitivity of a Transmission Towerâ€, Journal of Sensors, vol. 2015, (2015).

      [17] T. B. Carlos and J. Kaminski, “Dynamic Response due to Cable Rupture in a Transmission Lines Guyed Towersâ€, Procedia Engineering, vol. 199, (2017), pp. 116–121.

      [18] G. Mcclure and M. Lapointe, “Modeling the Structural Dynamic Response of Overhead Transmission Linesâ€, Computers and Structures, vol. 81, (2003), pp. 825–834.

      [19] X. Fu, H. Li, and J. Li, “Wind-Resistance and Failure Analyses of a Lightning-Damaged Transmission Towerâ€, Journal of Performance of Constructed Facilities, vol. 32, no. 2013, (2018), pp. 1–8.

      [20] T. G. Mara and H. P. Hong, “Effect of Wind Direction on the Response and Capacity Surface of a Transmission Towerâ€, Engineering Structures, vol. 57, (2013), pp. 493–501.

      [21] L. Tian, Q. Yu, R. Ma, and C. Wang, “The Collapse Analysis of A Transmission Tower Under Wind Excitation†,Open Civil Engineering Journal, vol. 8, (2014), pp. 136–142.

      [22] S. Srikanth and S. Karanth, “Time History Analysis of an Elevated Water Tank Under Different Ground Motionsâ€, International Journal of Innovative Research in Technology, vol. 4, no. 2, (2017), pp. 307–315.

      [23] L. Tian and Y. Zeng, “Parametric Study of Tuned Mass Dampers for Long Span Transmission Tower-Line System under Wind Loadsâ€, Shock Vibration, vol. 2016, (2016).

  • Downloads

  • How to Cite

    Hamzah, N. H., Usman, F., & Mat Yatim, M. Y. (2018). Dynamic Response of Self-Supported Power Transmission Tower Subjected to Wind Action. International Journal of Engineering & Technology, 7(4.35), 476-481. https://doi.org/10.14419/ijet.v7i4.35.22866