AbstractAbout AuthorsReferences
Experimental studies of the dynamic behavior of metal supports of an overhead line (OL) under the action of wind loads are presented. The methodology and scheme of the experiment execution in two stages on the anchor-angular and intermediate supports of the 220 kV overhead line “Zmiev TPP – Zalyutino” have been developed. At the first stage, the excitation of vibrations of the support structures was achieved using wind action, at the second stage, free vibrations of the “support – wires” system were recorded, which were created using manual resonance. Graphs of stress changes in structural elements of tower lattice supports in the wind along and across the overhead line are presented. The main natural frequencies of vibrations of metal supports have been experimentally determined, which are displayed on the free vibration damping graphs. Analysis of the obtained spectra of longitudinal pulsations of wind speed made it possible to conclude that the wind flow is stationary. The necessity of frequency detuning of the overhead line support structure from the natural frequency of 2.2 Hz has been established, since an external effect with this frequency is possible when the live wire breaks in one of the phases. It is necessary to improve not only the principles of monitoring and observing the behavior of structures in the wind flow, but also to develop simple methods to take into account the dynamic component under the action of natural-climatic and emergency loads, which by their nature are dynamic phenomena.
A.V. TANASOGLO, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
I.M. GARANZHA, Candidate of Sciences (Engineering), (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.R. FEDOROVA, Student (This email address is being protected from spambots. You need JavaScript enabled to view it.)
I.M. GARANZHA, Candidate of Sciences (Engineering), (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.R. FEDOROVA, Student (This email address is being protected from spambots. You need JavaScript enabled to view it.)
National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)
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1. Trofimov V.I. Issledovanie ustojchivosti i nesushhej sposobnosti metallicheskikh konstrukcij opor linij elektroperedachi [Study of the stability and load-bearing capacity of metal structures such as power transmission towers]. Moscow: ASV. 2019. 320 p.
2. Шевченко Е.В. Совершенствование металлических конструкций опор воздушных линий электропередачи. Макеевка: ДонНАСА, 2017. 123 с.
2. Shevchenko E.V. Sovershenstvovanie metallicheskix konstrukcij opor vozdushnykh linij elektroperedachi [Improving metal structures of overhead power transmission line supports]. Makeevka: DonNASA. 2017. 123 p.
3. Васылев В.Н. Исследование пространственной работы крестовой решетки при натурных испытаниях опоры ВЛ на Полигоне ДонНАСА // Металлические конструкции. 2018. Т. 19. № 1. С. 15–25.
3. Vasy`lev V.N. Issledovanie prostranstvennoj raboty krestovoj reshetki pri naturnykh ispytaniyakh opor VL na Poligone DonNASA. Metallicheskie konstrukcii. 2018. Vol. 19. No. 1, pp. 15–25. (In Russian).
4. Крюков К.П. Конструкции и механический расчет линий электропередачи. М.: Энергия, 2020. 312 с.
4. Kryukov K.P. Konstrukcii i mekhanicheskij raschyot linij ehlektroperedachi [Structures and mechanical analysis of power lines] Moscow: Energiya. 2020. 312 p.
5. Yang B., Dzikowich B. Stress, strain, and structural dynamics: an interactive handbook of formulas, solutions, and MATLAB toolboxes. The Journal of the Acoustical Society of America. 2005. V. 118 (6), pp. 3376–3387. DOI: https://doi.org/ 10.1121/1.2118987
6. Coşkun S.B. Advances in computational stability analysis. Rijeka: InTech. 2020. 132 p.
7. Bazant Z.P. Stability of structures: elastic, inelastic, fracture, and damage theories. New York: Oxford University Press. 2020. 1011 p.
8. Couneson P., Lamsoul J., Delplanque D. Improving the performance of existing high-voltage overhead lines by using compact phase and ground conductors. CIGRE. Vol. 12 (3). 2019, pp. 18–76.
9. Танасогло А.В. Уточнение коэффициента динамичности анкерно-угловой опоры ВЛ 110 кВ при действии пульсационной составляющей ветровой нагрузки // Металлические конструкции. 2019. Т. 34. № 2. С. 135–145.
9. Tanasoglo A.V. Utochnenie koehfficienta dinamichnosti ankerno-uglovoj opory VL 110 KV pri dejstvii pul’sacionnoj sostavlyayushchej vetrovoj nagruzki. Metallicheskie konstrukcii. 2019. Vol. 34. No. 2, pp. 135–145.
10. Diana G., Bruni S., Cheli F., Fosatti F., Manetti A. Dynamic analysis of the transmission line crossing «Lago de Maracaibo». Structures of Overhead Lines Journal. 2007, pp. 1759–1766.
11. Kemp A.R., Behneke R.H. Behaviour of cross-bracing in latticed towers. Journal of Structural Engineering. 2018. Vol. 124 (4). 2018, pp. 360–367. DOI: https://doi.org/13.1061/(ASCE)0733-9445(2018)124:4(360)
12. Box M.J., Davis D., Swann W.H. Nonlinear optimization techniques. Edinburgh: Oliver and Boyd. 2018. 60 p.
13. Li H., Bai H. High-voltage transmission tower-line system subjected to disaster loads. Progress in Natural Science. 2016. Vol. 16 (9), pp. 899–911. DOI: https://doi.org/10.1080/10020070612330087
14. Togbenou K., Li Y., Chen N., Liao H. An efficient simulation method for vertically distributed stochastic wind velocity field based on approximate piecewise wind spectrum. Journal of Wind Engineering and Industrial Aerodynamics. 2016. Vol. 151 (3), pp. 48–59. DOI: https://doi.org/10.1155/2010/749578
For citation: Tanasoglo A.V., Garanzha I.M., Fedorova S.R. Monitoring of single-post free-standing supports of overhead power lines under the action of wind loads. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2023. No. 12, pp. 73–78. (In Russian). DOI: https://doi.org/10.31659/0044-4472-2023-12-73-78