see my d.box entries

see also: “This tutorial explains the general workflow of running a rolling stock analysis. Based on two little examples we explain the necessary input for one load train with one velocity (example: tsi-beam-01.dat) and for multiple load trains and velocities (example: tsi-beam-02.dat).” (https://www.sofistik.de/documentation/2016/en/tutorials/dyna... )

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Note added at 2 hrs (2020-08-05 17:22:19 GMT)
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https://www.sciencedirect.com/science/article/pii/S003808061...

"As for locomotives, the inter-axle distance in ‘Corail’ coaches is 2.8 m. The total mass of one entire coach is 42 Mg and the average load per axle is 105 kN. An example of axle-load measurement registered for an Intercity train using the strain gauges glued to the rail (calibrated using a known-load train) is shown in Fig. 3."

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Note added at 2 hrs (2020-08-05 17:25:51 GMT)
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"Some cautions are in order regarding the concentrated loads corresponding to the axis of Load Model 1. According to the theorem of Asimont, the maximum value of the bending moment occurs in the section on which one of the two tandem axles is applied at a distance from the beam midline equal to half that between the aforesaid axle and the resultant of the moving load train. Using the notation in figure 7, the verifiable absolute maximum moment on the beam occurs in section ‘s’ and is:" (HANDBOOK 4 - DESIGN OF BRIDGES, Guide to basis of bridge design related to Eurocodes supplemented by practical examples)(https://eurocodes.jrc.ec.europa.eu/show_Entity.php?file_id=E...
)