dik
Structural
- Apr 13, 2001
- 25,752
I'm looking at evaluation of a portion of rail that will have an increased load capacity and am trying to determine the capacity and what factors are normally considered. It's fortunate that the portion of rail is not curved (I think the contact areas shift).
Is there a method of calculating the wheel load capacity of a given rail section?
The wheel load would be distrbuted over a fraction of a square inch to the rail cap (terminology?) and this would be transmitted through the cap to the portion of rail section that is thinned down and the thinned portion could yield.
What shape does the loaded surface have? Can it be square with an area of P/fy? Are there actual formulas that can be used?
Is the rail designed to be supported from tie to tie? or if an elatic support is provided by the ties, then some ties could be in an uplift condition (with a net downward loading). Is this correct
Is there a method of calculating the wheel load capacity of a given rail section?
The wheel load would be distrbuted over a fraction of a square inch to the rail cap (terminology?) and this would be transmitted through the cap to the portion of rail section that is thinned down and the thinned portion could yield.
What shape does the loaded surface have? Can it be square with an area of P/fy? Are there actual formulas that can be used?
Is the rail designed to be supported from tie to tie? or if an elatic support is provided by the ties, then some ties could be in an uplift condition (with a net downward loading). Is this correct