Long steel rail track stability analysis judging method for continuously welded rail track
A technology of seamless circuit and judgment method, which is applied in the direction of instruments, complex mathematical operations, calculations, etc., and can solve the problems of lack of stress, damage degree, etc.
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[0039] Firstly, the self-made system is used to detect the temperature stress of a 900m downlink seamless line in service in a section of a railway bureau in China. Assuming that the same cross-section of the rail bears equal stress, the invention determines the waist of the rail as the stress detection area. Considering the change of the original bending vector of the track, the temperature stress expression of the seamless line is established according to the virtual work principle of static force balance and the specific parameters of the seamless line. 1,840 sleepers are laid per kilometer on the seamless line. The curve radius of this section of the line is 900m, the parameter of the sleeper is 84.3N / cm, the bending deformation vector of the line is 0.2cm, and the cross-sectional area of the 60kg / m rail is 77.45cm 2 , the calculated line temperature stress is:
[0040] σ = βEIπ 2 ...
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