Finite Element Analysis of Foundation Settlement of 220kV Transmission Tower with Independent Foundation

Abstract:

The uneven subsidence of the independent foundation of the transmission tower often happens in the coal mining area, which causes serious threat to the safe operation of transmission lines. In this paper, the finite element analysis is carried out for a certain 220kV tower-ling coupling system, and the effects of the different kinds of earth deformations on the structure responses are studied. The results show that the contribution of the vertical displacement of the foundation to the variations of the internal forces of the tower is quite small and the resultant stress does not exceed its critical value. However, in the same load conditions, when the distance of root span changed or asymmetry settlement is overexertion, the truss member stress of the cross braces exceeds the yield strength of the materials and occurs yield deformation.

• Periodical: Applied Mechanics and Materials (Volumes 201-202)
• Pages: 602-607
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.201-202.602
• Online since: October 2012
• Authors: Bo Li, Ming Jian Jian, Du Qing Zhang, Guang Cheng Zhang
• Keywords: Finite Element Analysis (FEA), Goaf Area of Coal Mine, Transmission Tower-Line Coupling, Uneven Settlement of Tower Foundation

References

[1] F.L. Yang, J.B. Yang, et al: Proceedings of the CSEE, Vol. 29 (2009) No.1, pp.100-106. (in Chinese)

[2] Q.R. Du: Wuhan Institute of Shipbuilding Technology, Vol. 5 (2006) No.3, pp.46-48. (in Chinese)

[3] Electric Power Construction Research Institute: Research Reports on Foundation of Transmission Line Tower in Mined-out Areas (State Grid Corporation of China, China 2006). (in Chinese)

[4] J.Q. Zhang, K. Yang, et al: Power System Technology, Vol. 30 (2006) No.2, pp.30-34. (in Chinese)

[5] M.X. Fu, W.M. Han and Z.L. Mo: Electric Power Construction, Vol. 25 (2004) No.6, pp.30-32. (in Chinese)

[6] M.M. Hao: Guangdong Electric Power, Vol. 15 (2002) No.1, pp.67-69. (in Chinese)

[7] Y.W. Feng: Steel Construction, Vol. 23 (2008) No.1, pp.21-25. (in Chinese)

[8] Q.H. Li and J.B. Yang: Electric Power Construction, Vol. 27 (2006) No.5, pp.5-7. (in Chinese)

[9] X.S. Lin, B. Yan, et al: Chinese Journal of Applied Mechanics, Vol. 26 (2009) No.1, pp.120-124. (in Chinese)

[10] X.H. Liu, B. Yan, et al: Engineering Mechanics, Vol. 26 (2009) No.1, pp.244-249. (in Chinese)

[11] A. Jamaleddine, G. McClure, J. Rousselet and R. Beauchemin: Computers and Structures, Vol. 47 (1993) No.4-5, pp.523-536.

DOI: 10.1016/0045-7949(93)90339-f

[12] State Economic and Trade Commission of the People's Republic of China: DL/T 5154-2002 Technical regulation of design for tower and pole structure of overhead transmission line (China Electric Power Press, China 2002). (in Chinese)