Research Article
Experimental Analysis of Static and Dynamic Performance for Continuous Warren Truss Steel Railway Bridge in Heavy Haul Railway
Table 7
Stress increment after loading of the 58th span beam.
| Case | Measuring point location | Stress increment value measured (MPa) | Stress increment value calculated (MPa) | Verification coefficient | Cycle 1 | Cycle 2 | Cycle 3 | Mean |
| Maximum bending moment of span 58 midspan | Left top chord | 101# | -37.41 | -37.41 | -37.64 | -32.70 | -34.81 | 0.94 | 102# | -26.57 | -26.43 | -26.04 | 103# | -26.07 | -26.18 | -25.66 | 104# | -42.55 | -42.01 | -41.86 | 105# | -31.63 | -31.49 | -31.50 | Left bottom chord | 106# | 30.51 | 30.40 | 30.14 | 28.21 | 28.22 | 0.98 | 107# | 25.50 | 25.91 | 25.65 | 108# | 30.08 | 30.37 | 30.25 | 109# | 24.55 | 24.41 | 24.27 | 110# | 30.40 | 30.56 | 30.19 | Right bottom chord | 111# | 26.51 | 26.40 | 26.14 | 27.09 | 28.22 | 0.94 | 112# | 25.50 | 25.91 | 25.65 | 113# | 25.08 | 25.37 | 25.25 | 114# | 24.45 | 24.99 | 24.58 | 115# | 33.62 | 33.53 | 33.29 | Left hip vertical | 116# | 12.63 | 13.27 | 13.15 | 18.31 | 24.52 | 0.75 | 117# | 12.28 | 12.41 | 12.78 | 118# | 26.74 | 27.15 | 27.02 | 119# | 24.50 | 24.65 | 24.52 | 120# | 14.65 | 14.39 | 14.53 | Right hip vertical | 121# | 23.23 | 23.76 | 23.64 | 19.29 | 24.52 | 0.79 | 122# | 25.43 | 26.01 | 25.73 | 123# | 13.43 | 12.60 | 13.86 | 124# | 12.96 | 13.74 | 13.75 | 125# | 20.42 | 20.69 | 20.16 |
| Maximum diagonal stress of span 58 | Left diagonal | 126# | 41.40 | 41.68 | 41.85 | 51.40 | 64.43 | 0.80 | 127# | 55.59 | 55.96 | 55.75 | 128# | 48.70 | 49.34 | 49.51 | 129# | 56.27 | 56.40 | 56.46 | 130# | 54.17 | 53.90 | 54.04 | Right diagonal | 131# | 61.68 | 61.56 | 61.60 | 57.54 | 64.43 | 0.89 | 132# | 63.00 | 63.16 | 63.05 | 133# | 56.42 | 56.56 | 56.46 | 134# | 54.32 | 54.61 | 54.51 | 135# | 52.22 | 51.95 | 51.95 |
| Maximum negative bending moment at pier 57 top | Left top chord | 136# | 45.93 | 46.57 | 45.89 | 44.14 | 54.74 | 0.81 | 137# | 43.25 | 43.24 | 43.52 | 138# | 41.30 | 41.57 | 41.99 | 139# | 41.98 | 42.35 | 42.75 | 140# | 46.93 | 47.36 | 47.52 |
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