Rail car loading

[Gumpmaster]

I have a slab on grade with a freight railroad running over it. The rails are going to be attached to the slab. I have no idea what types of load the rails will impart to the slab. I'd like to make sure my slab doesn't crack to pieces. The slab is for a loading platform, so I don't really need to worry about high speed trains running over it.

Has anyone ever run into a situation like this? Are there any good online references (I don't feel like buying another book). Ideally what I'd like is a strip load that I can pop into a mat slab program or into some slab on grade charts. I'm in an IBC 2003 location. Thanks.

 

[JAE]

You’d probably want to use a Cooper E-80 loading.


Here’s a few links:

Link 1

Link 2 (check out page 20 for a diagram)

 

[flyby911]

i think you should get back to the owner and ask for extra info about the maximum loading and weights,,it's not a railway bridge to take the loads from the standards,it's like a crane load, get back to the manefacturer or the owner

 

[PEinc]

+$100.00 for a new book seems like a very small investment to help assure a proper and safe design. You might even learn something from the new book.

 

[JAE]

flyby911, the OP did state "freight railroad" loading.

That is much more significant that a crane. The E-80 loading would be applicable...perhaps no impact factor though if the speed is slow.

 

[flyby911]

JAE , yes you'r right..

i think also he needs a design approach also for the slab on grade,

when i designed slab on grades i used to make shell elements in the sap2000 rested on springs in every joint with a stiffness equals to coeff of subgrade reaction of the soil multiplied by the area it's supporting

but in that case i would need in addition to check bearing stress of the strip load of one rail on the RC slab

 

[Gumpmaster]

Thanks for the replies. I think the E-80 loading is about what I was looking for. I'm going to place the loading into a simple finite elements program for slabs on elastic supports.

 

[PEinc]

Don't forget that the rails (and ties, if any) help distribute the E-80 wheel loads over a larger slab area.