Fragility Analysis of Power Transmission Tower Subjected to Wind–Sand Loads

被引：0

作者：

Ma, Xiaoqian ^{[1
]}

Lu, Jun ^{[1
]}

Li, Benliang ^{[1
]}

Tian, Weiguang ^{[1
]}

Zhang, Yaxiao ^{[2
]}

Zhang, Peng ^{[2
]}

机构：

[1] State Grid Economic and Technical Research Institute Co., Ltd., Beijing

[2] College of Transportion Engineering, Dalian Maritime University, Dalian

来源：

Energies | 2024年 / 17卷 / 24期

关键词：

dynamic response; fragility analysis; Hertz contact model; power transmission tower; wind–sand load;

D O I：

10.3390/en17246339

中图分类号：

学科分类号：

摘要：

With the increasing construction of power transmission towers in desert regions for the transportation of wind or solar energy, structural safety under wind and sand loads has become critical. Current design codes primarily account for wind loads on these towers, overlooking the effects of sand impact. This study presents a new model to simulate sand–steel interactions and evaluates the fragility of transmission towers under both wind-only and combined wind–sand loads. The impact model is grounded in Hertz contact theory, with equations of motion derived for the interaction between wind-driven sand particles and structural members, solved via the central difference method. A parametric study investigates the effects of wind speed and sand particle mass: (1) impact forces and maximum deformations increase with wind speed, with impact duration initially decreasing up to 20 m/s and then gradually increasing; (2) an increase in sand particle mass leads to greater impact deformation, force, and duration. Fragility analysis, using incremental dynamic analysis, reveals that sand particles significantly amplify the tower’s response at high wind speeds and increase failure probability across all wind attack angles. These findings highlight the importance of incorporating sand-impact effects in the design and assessment of power transmission towers in desert environments to ensure structural safety and reliable operation of critical energy infrastructure. © 2024 by the authors.

引用

共 26 条

[1] Iwaniec J., Iwaniec M., Kurowski P., Szopa K., Investigation into Power Line Supporting Structure Dynamic Properties by Means of Impulse Test, Energies, 15, (2022)
[2] Gu K., Tran N.X., Han J.M., Kim K., Ham K., Kim S., Centrifuge study on the uplift behavior of spread foundation for transmission tower in sand, Can. Geotech. J, 61, pp. 1418-1432, (2024)
[3] Kelly J., Vogel C., Willden R., Impact and mitigation of blade surface roughness effects on wind turbine performance, Wind Energy, 25, pp. 660-677, (2022)
[4] Hu D., Zhang J., Pakzad R., Huang N., A numerical study on load effects of low-rise buildings in a wind-blown sand environment, J. Build. Eng, 84, (2024)
[5] Wan D., Chen S., Li D., Zhen Q., Zhang B., Sand-Laden Wind Erosion Pair Experimental Analysis of Aerodynamic Performance of the Wind Turbine Blades, Energies, 17, (2024)
[6] Wang J., Gao J., Zhang Y., Cui H., Analysis of the Sand Erosion Effect and Wear Mechanism of Wind Turbine Blade Coating, Energies, 17, (2024)
[7] Han F., Wang C., Liu Z., Li L., Yin W., Study on Sand-Accumulation Changes of Highway and Formation Mechanism of Sand Damage in Drifting Dunes Areas, Appl. Sci, 12, (2022)
[8] Deng G., Ma W., Peng Y., Wang S., Yao S., Peng S., Experimental study on laminated glass responses of high-speed trains subject to windblown sand particles loading, Constr. Build. Mater, 300, (2021)
[9] Hao Y., Li J., Liu Y., Damage Mechanism of Existing Coating and New Coating of Transmission Towers Eroded by Wind-blown Sand, Cailiao Daobao/Mater. Rep, 33, pp. 1389-1394, (2019)
[10] Zhang Z., Liu J., Shao K., Zhang P., Analysis of Wind-Sand-Load-Induced Dynamic Response of Transmission Tower-Line Systems, Shock Vib, 2022, (2022)

← 1 2 3 →