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Analytical and Experimental Modal Analysis of Electrical Transmission Tower to Study the Dynamic Characteristics and Behaviors

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Experimental modal analysis of electrical transmission tower has been a challenging task for transmission tower researchers and design engineers in industry all over the world. Requirement of large numbers of sensors and accelerometers have been major constrain. In this study an innovative approach has been developed to investigate the dynamic characteristics and behavior of tower structure through analytical and experimental modal analysis. Firstly, a scale down (1:15) prototype model of transmission tower structure has been constructed with mild steel straps, joint together by welding, for modal testing. Modal hammer test has been conducted on the prototype tower model for extracting modal parameters; modal frequency, modal damping and modes, of the tower model which representing the actual tower structure. Secondly, the transmission tower structure has been modeled in standard finite element tools and analyzed analytically for natural frequencies. The first six natural frequencies and corresponding mode shapes have been determined analytically and first six natural frequencies have also been determined experimentally and compared with each other. The first six natural frequencies are determined analytically, the frequency range of 2–9 Hz has been found. The analytical and experimental modal analysis of transmission tower structure has been found to be in correlation with some differences. The maximum natural frequencies percentage difference 11.1% has been found; between the scale down model and the stand software model. Additionally, the tower structure has been modified and optimized to improve the stiffness of the diaphragm as per specification and practical limitations. The first order natural frequency of the modified tower has been reduced to 2.171 Hz from the 2.1773 Hz.

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  1. Adishchev VV, Zubkov AS, Ivanov AI, Maltsev VV, Panichev AY, Blaznov AN (2018) Rational design of steel — GFRP towers for ultracompact overhead power lines. Mechanics of Advanced Materials and Structures 27(3):189–195, DOI: https://doi.org/10.1080/15376494.2018.1472331

  2. Bai HF, Yi TH, Li HN, Ren L (2012) Multisensors on-site monitoring and characteristic analysis of UHV transmission tower. International Journal of Distributed Sensor Networks 8(11):1–10, DOI: https://doi.org/10.1155/2012/545148

  3. Bartoli G, Betti M, Giordano S (2013) In situ static and dynamic investigations on the Torre Grossa masonry tower. Engineering Structures 52:718–733, DOI: https://doi.org/10.1016/j.engstruct.2013.01.030

  4. Battista RC, Rodrigues RS, Pfeil MS (2003) Dynamic behavior and stability of transmission line towers under wind forces. Journal of Wind Engineering and Industrial Aerodynamics 91(8):1051–1067, DOI: https://doi.org/10.1016/S0167-6105(03)00052-7

  5. Bhowmik C, Chakraborti P (2019) Study of dynamics characteristics of composite transmission tower using carbon fiber epoxy (thermoset) as structural material. Advances in Modelling and Analysis C 74(1):22–26, DOI: https://doi.org/10.18280/ama_c.740103

  6. Bhowmik C, Chakraborti P, Das SS (2018) Dynamic analysis of typical composite electric power transmission tower structure by ANSYS. International Journal of Computational Intelligence & IoT 1(1):1–10

  7. Bhowmik C, Chakraborti P, Das SS, Singh R (2019) Modal analysis of 132 kV double circuit electric power transmission tower made up with composite material thermoplastic long carbon fiber nylon 66. Advances in Interdisciplinary Engineering 1(1):891–899, DOI: https://doi.org/10.1007/978-981-13-6577-5_86

  8. Gentile C, Saisi A, Cabboi A (2015) Structural identification of a masonry tower based on operational modal analysis. International Journal of Architectural Heritage 9(2):98–110, DOI: https://doi.org/10.1080/15583058.2014.951792

  9. Heidari A, Rahgozar R Kamgar R (2014) Free vibration analysis of tall bulinding with geometrical discontinuties. Asian Journal of Civil Engineering 15(1):107–122

  10. Hu WH (2012) Operational modal analysis and continuous dynamic monitoring of footbridges. PhD Thesis, University of Porto, Porto, Portugal

  11. Kamgar R Rahgozar R (2015) Determination of critical excitation in seismic analysis of structures. Earthquakes and Structures 9(4):875–891, DOI: https://doi.org/10.12989/eas.2015.9.4.875

  12. Kamgar R, Rahgozar R (2016) A simple method for determining the response of linear dynamic systems. Asian Journal of Civil Engineering 17(6):785–801

  13. Li HN, Shi WL, Wang GX, Jia LG (2005) Simplified models and experimental verification for coupled transmission tower-line system to seismic excitations. Journal of Sound and Vibration 286(3):569–585, DOI: https://doi.org/10.1016/j.jsv.2004.10.009

  14. Li X, Zhang W, Niu H, Wu ZY (2018) Probabilistic capacity assessment of single circuit transmission tower-line system subjected to strong winds. Engineering Structures 175:517–530, DOI: https://doi.org/10.1016/j.engstruct.2018.08.061

  15. Tavakoli R, Kamgar R, Rahgozar R (2019) Seismic performance of outrigger-belt truss system considering soil-structure interaction. International Journal of Advanced Structural Engineering 11(1):45–54, DOI: https://doi.org/10.1007/s40091-019-0215-7

  16. Tian L, Guo L, Ma R, Gai X, Wang W (2018) Full-scale tests and numerical simulations of failure mechanism of power transmission towers. International Journal of Structural Stability and Dynamics 18(9):1–20, DOI: https://doi.org/10.1142/S0219455418501092

  17. Tian L, Li H, Liu G (2010) Seismic response of power transmission tower-line system subjected to spatially varying ground motions. Mathematical Problems in Engineering 1(1):1–21, DOI: https://doi.org/10.1155/2010/587317

  18. Wang WM, Li HN, Tian L (2013) Progressive collapse analysis of transmission tower-line system under earthquake. Advanced Steel Construction 9(2):161–172

  19. Yasui H, Marukawa H, Momomura Y, Ohkuma T (1999) Analytical study on wind-induced vibration of power transmission towers. Journal of Wind Engineering and Industrial Aerodynamics 83(1):431–441, DOI: https://doi.org/10.1016/S0167-6105(99)00091-4

  20. Zhang Z, Wang Y, Fan Z (2015) Similarity analysis between scale model and prototype of large vibrating screen. Shock and Vibration 1(1):1–8, DOI: https://doi.org/10.1155/2015/247193

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We want to thank Ministry of Human Resource Development (MHRD), INDIA for the funding of this research. We also want to thank to the Director and HOD Mechanical, NIT Agartala, INDIA for their continuous support and motivation.

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Correspondence to Chiranjit Bhowmik.

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Bhowmik, C., Chakraborti, P. Analytical and Experimental Modal Analysis of Electrical Transmission Tower to Study the Dynamic Characteristics and Behaviors. KSCE J Civ Eng 24, 931–942 (2020). https://doi.org/10.1007/s12205-020-1563-3

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  • Transmission line tower
  • Modification
  • Dynamic
  • Modal analysis