Investigation on the failure type of tower segments under equivalent static wind loads

다국어 초록 (Multilingual Abstract)

This paper presents a failure type assessment curve method to judge the failure type of transmission tower segments.
This novel method considers the equivalent static wind load characteristics and the transmission tower members’ load-bearing capacities based on numerical simulations. This method can help judge the failure types according to the relative positions between the actual state points and the assessment curves of transmission tower segments. If the extended line of the actual state point intersects with the horizontal part’s assessment curve, the segment would lose load-bearing capacity due to the diagonal members’ failure. Another scenario occurs when the intersection point is in the oblique part, indicating that the broken main members have caused the tower segment to fail. The proposed method is verified by practical engineering case studies and static tests on the scaled tower segments.

참고문헌 (Reference)

1 Xie Q., "Wind tunnel test on global drag coefficients of multi-bundled conductors" 120 (120): 9-18, 2013

2 Albermani, F., "Upgrading of transmission towers using a diaphragm bracing system" 26 : 735-744, 2004

3 Hamada, A., "The response of a guyed transmission line system to boundary layer wind" 139 (139): 135-152, 2017

4 Edgar, T. H., "Structural behavior of lattice transmission towers subjected to wind load" 13 (13): 1462-1475, 2017

5 Woo-Bum Kim, "Strength and Behavior According to Leg Frame Shape Variations of an Electric Transmission Tower" 한국강구조학회 20 (20): 355-363, 2020

6 Chen, S. F., "Stability capacity of tower cross-bracings taking account of interaction in buckling" 44 (44): 19-28, 2011

7 Balagopal R., "Simplified bolted connection model for analysis of transmission line towers" 27 (27): 2114-2125, 2020

8 Li, X., "Probabilistic capacity assessment of single circuit transmission tower-line system subjected to strong winds" 175 : 517-530, 2018

9 de Souza, R. R., "Optimization of transmission towers considering the bolt slippage effect" 211 (211): 1-13, 2020

10 Earls, C. J., "On the notion of effective length for single angle geometric axis flexure" 58 (58): 1195-1210, 2002

11 Ministry of Housing and Urban-Rural Development of the People’s Republic of China, "National Standard of the People’s Republic of China. GB50017-2017 Standard for Design of Steel Structures" China Architecture and Building Press 2017

12 Pourshargh F., "Modeling the local buckling failure of angle sections with beam elements" 15 (15): 364-376, 2019

13 American Society of Civil Engineers, "Minimum Design Loads for Buildings and Other Structures"

14 Nur H. Hamzah ; Fathoni Usman, "Geospatial analysis of wind velocity to determine wind loading on transmission tower" 한국풍공학회 28 (28): 381-388, 2019

15 Cai, Y. Z., "Fragility modelling framework for transmission line towers under winds" 191 : 686-697, 2019

16 Albermani, F., "Failure analysis of transmission towers" 16 : 1922-1928, 2008

17 Zhang, J., "Failure analysis of transmission tower subjected to strong wind load" 160 : 271-279, 2019

18 Fu, X., "Failure analysis of a transmission line considering the joint probability distribution of wind speed and rain intensity" 233 (233): 1-13, 2021

19 Xie, Q., "Experimental study on the mechanical behavior and failure mechanism of a latticed steel transmission tower" 139 : 1009-1018, 2013

20 Zhang, Q., "Experimental study of wind loads on typical single-circuit transmission towers" 173 (173): 186-197, 2020

21 Li, J. X., "Ensuring the structural safety of overhead transmission lines by design" 34 (34): 1-17, 2021

22 Darestani, Y.M., "Effect of modelling complexities on extreme wind hazard performance of steel lattice transmission towers" 16 (16): 898-915, 2020

23 Popovic, D., "Compression tests on cold-formed angles loaded parallel with a leg" 127 (127): 600-607, 2013

24 Ahmed Hamada ; Ashraf A. El Damatty, "Behaviour of transmission line conductors under tornado wind" 한국풍공학회 22 (22): 369-391, 2016

25 S.S. Banik ; H.P. Hong ; Gregory A. Kopp, "Assessment of capacity curves for transmission line towers under wind loading" 한국풍공학회 13 (13): 1-20, 2010

26 Amal Elawady ; Haitham Aboshosha ; Ashraf El Damatty, "Aero-elastic response of transmission line system subjected to downburst wind: Validation of numerical model using experimental data" 한국풍공학회 27 (27): 71-88, 2018

27 Abdelrahman, A. H. A., "Advanced joint slip model for single-angle bolted connections considering various effects" 23 (23): 2121-2135, 2020

28 He, B., "A method for analyzing stability of tower-line system under strong winds" 127 : 1-7, 2019