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Nonlinearity of Conductor Behavior in the Context of Loads on Transmission Towers

Grzegorz WANDZIK

Grzegorz WANDZIK

Assoc. Prof. PhD, DSc; Department of Structural Engineering, Faculty of Civil Engineering, Silesian University of TechnologyGliwice, Poland
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WANDZIK, Grzegorz
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Grzegorz KOWALCZYK

Grzegorz KOWALCZYK

MSc; Arinet sp. z o.o.Gliwice, Poland
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KOWALCZYK, Grzegorz
  
31 déc. 2024
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Publié en ligne: 31 déc. 2024
Pages: 147 - 159
Reçu: 26 sept. 2024
Accepté: 12 nov. 2024
DOI: https://doi.org/10.2478/acee-2024-0034
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© 2024 Grzegorz WANDZIK et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Various forms of linear/nonlinear relations E(q)
Various forms of linear/nonlinear relations E(q)

Figure 2.

Diagram illustrating approaches related to PSF application for design tension forces
Diagram illustrating approaches related to PSF application for design tension forces

Figure 3.

Relationships H(q) and H(T) for conductor AFL-6 240 mm2
Relationships H(q) and H(T) for conductor AFL-6 240 mm2

Figure 4.

Relationships f(q) and f(T) for conductor AFL-6 240 mm2
Relationships f(q) and f(T) for conductor AFL-6 240 mm2

Figure 5.

The rate of tension force change mt as a function of load q for the conductor AFL-6 240 mm2
The rate of tension force change mt as a function of load q for the conductor AFL-6 240 mm2

Figure 6.

Linearity deviation of the H(q) relationship for conductor AFL 6-240 mm2 in spans of 200 and 400 m
Linearity deviation of the H(q) relationship for conductor AFL 6-240 mm2 in spans of 200 and 400 m

Figure 7.

Visualization of the design effects determination method
Visualization of the design effects determination method

Figure 8.

Lines a and e (with slopes ma and me, respectively) used to determine the force Hd
Lines a and e (with slopes ma and me, respectively) used to determine the force Hd

Figure 9.

Comparison of slopes ma and me for conductor AFL 6-240 mm2 (H0 = 18.0/24.0 kN)
Comparison of slopes ma and me for conductor AFL 6-240 mm2 (H0 = 18.0/24.0 kN)

Figure 10.

Variation of the nE for AFL-6 240 mm2 conductor as a function of load (H0 = 18.0/24.0 kN)
Variation of the nE for AFL-6 240 mm2 conductor as a function of load (H0 = 18.0/24.0 kN)

Figure 11.

Example of determining design tension forces Hd
Example of determining design tension forces Hd

Figure 12.

Tension forces Hd according to different approaches
Tension forces Hd according to different approaches
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Sample calculations of forces Hd and the global factor γglob,A

1 2 3 4 5 6 7 8
qk N/m H0 kN Hk kN Hd,A2 kN Hd,A kN Hd,E kN nE - γglob,A -
conductor AFL 6 – 240 mm2; L = 200 m; T = –5°C; γA = γE = 1.30; γG = 1.0; γI = 1.25
15.0 12.0 18.64 19.84 22.50 24.23 1.45 1.21
30.0 12.0 30.53 34.08 36.68 39.69 1.49 1.20
15.0 18.0 26.08 27.21 29.76 33.90 2.13 1.14
30.0 18.0 37.56 41.05 43.61 48.83 1.86 1.16
15.0 24.0 32.38 33.35 35.59 42.09 3.03 1.10
30.0 24.0 42.76 46.07 48.50 55.59 2.23 1.13
conductor AFL 6 – 240 mm2; L = 400 m; T = –5°C; γA = γE = 1.30; γG = 1.0; γI = 1.25
15.0 12.0 18.73 20.25 23.73 24.35 1.12 1.27
30.0 12.0 34.67 39.68 43.40 45.07 1.19 1.25
15.0 18.0 27.23 29.09 33.26 35.40 1.35 1.22
30.0 18.0 45.85 51.44 55.54 59.61 1.42 1.21
15.0 24.0 34.58 36.48 40.72 44.95 1.69 1.18
30.0 24.0 53.48 59.12 63.25 69.52 1.64 1.18
conductor AFL 1.7– 70 mm2; L = 200 m; T = –5°C; γA = γE = 1.30; γG = 1.0; γI = 1.25
10.0 10.0 15.98 17.01 18.19 20.77 2.17 1.14
20.0 10.0 22.87 25.24 26.50 29.73 1.89 1.16
conductor AFL 1.7– 70 mm2; L = 400 m; T = –5°C; γA = γE = 1.30; γG = 1.0; γI = 1.25
10.0 10.0 18.64 20.37 22.35 24.23 1.51 1.20
20.0 10.0 30.05 33.91 35.95 39.07 1.53 1.20
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