PSI - Issue 81

Yaroslav Kovalchuk et al. / Procedia Structural Integrity 81 (2026) 170–176

175

Fig. 9. Displacement of the upper chord nodes along the Y-axis under loading at the limit state level applied to the lower chord nodes of the 8000×580 mm truss.

The obtained numerical stress data for the upper chord of the 8000×580 mm truss under loading at the lower chord nodes are presented in Table 2. Table 2. Numerical stress data in the upper chord of the 8000×580 mm truss under loading applied to the lower chord nodes Truss length, m P1 80 kN P2 120 kN P3 160 kN P4 240 kN P5 320 kN P6 400 kN P7 480 kN P8 560 kN MPa 0.01 0.01 0.17 0.24 0.32 0.47 0.47 0.78 0.93 0.13 1.31 14.13 20.54 26.95 39.77 39.77 65.42 78.24 0.25 3.72 39.12 56.83 74.53 109.9 109.9 180.80 216.20 0.46 1.46 11.52 16.55 21.58 31.64 31.64 51.76 61.82 1.13 0.70 3.61 5.06 6.51 9.42 9.42 15.23 18.14 1.26 0.78 4.44 6.27 8.10 11.75 11.75 19.07 22.73 1.69 0.68 6.76 9.80 12.85 18.93 18.93 31.10 37.18 1.94 0.59 2.94 4.11 5.28 7.63 7.63 12.32 14.67 2.09 0.82 1.93 2.51 3.08 4.23 4.23 6.53 7.69 2.29 0.95 5.66 8.01 10.37 15.07 15.07 24.49 29.19 2.96 1.30 10.70 15.41 20.11 29.52 29.52 48.34 57.74 3.49 1.04 10.46 15.17 19.88 29.31 29.31 48.15 57.57 4.00 1.53 5.79 7.92 10.05 14.31 14.31 22.84 27.10 4.13 0.92 5.00 7.04 9.08 13.16 13.16 21.32 25.40 4.75 1.28 10.7 15.41 20.13 29.55 29.55 48.40 57.82 5.00 1.30 10.68 15.37 20.06 29.44 29.44 48.20 57.58 5.69 0.91 5.48 7.77 10.05 14.62 14.62 23.77 28.34 5.94 0.86 3.45 4.75 6.05 8.64 8.64 13.83 16.42 6.62 0.82 5.14 7.30 9.46 13.78 13.78 22.43 26.75 7.49 1.36 11.51 16.59 21.67 31.82 31.82 52.13 62.28 7.63 2.20 21.44 31.06 40.69 59.93 59.93 98.42 117.70 7.75 3.72 39.33 57.14 74.94 110.5 110.5 181.80 217.40 7.81 2.04 21.85 31.76 41.67 61.48 61.48 101.10 120.90 8.00 0.03 0.39 0.56 0.74 1.09 1.09 1.79 2.14 Analysis of the obtained data sets on the parameters of the stress-strain state (SSS) in the upper chord of the truss under load in the nodes of the lower chord showed: