Rail to concrete slab loading
Rail to concrete slab loading
(OP)
Hi,
New to the board but looking at some other posts i can see that i came to the right place. :)
Assuming the load on a rail is 2000kN (YES 2000kN) from a wheel, how is the load then transferred on to the concrete slab? The rail has no sleepers but is placed straight onto the concrete slab. I've done smaller works but this is the first time that i've ever had to consider rails.
:S
New to the board but looking at some other posts i can see that i came to the right place. :)
Assuming the load on a rail is 2000kN (YES 2000kN) from a wheel, how is the load then transferred on to the concrete slab? The rail has no sleepers but is placed straight onto the concrete slab. I've done smaller works but this is the first time that i've ever had to consider rails.
:S





RE: Rail to concrete slab loading
RE: Rail to concrete slab loading
RE: Rail to concrete slab loading
RE: Rail to concrete slab loading
The soil isn't that great either... Reclaimed swamp land. Mixture of gravel and sandy soil was used to reclaim.
RE: Rail to concrete slab loading
RE: Rail to concrete slab loading
Please see FAQ731-376 for great suggestions on how to make the best use of Eng-Tips Fora.
RE: Rail to concrete slab loading
Are you sure about the wheel loading? 2 military tanks per wheel is quite a load and it may be cheaper to look at different bogeys to spread the load to more wheels.
RE: Rail to concrete slab loading
Subsequently the load was reduced to 800kN imposed onto the concrete.
RE: Rail to concrete slab loading
RE: Rail to concrete slab loading
Assume the rail acts as a beam. Decide on some spacing for the "beam" supports (start with a guess.. you can refine by iteration)....this will be the contact points on the concrete. Compute the reactions for a continuous beam with 3 supports. This will give you a starting point for your load distribution on the concrete.
Another approach is to assume the load is spread at a 45 degree angle in both directions from the center of load to the bottom of the rail. This will give you the contact stress on the concrete. From there, it is a pavement design problem for the concrete.
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RE: Rail to concrete slab loading
RE: Rail to concrete slab loading
I am acquainted with recent job for a shipyard where there were two trucks on each leg of the tower for a total of four trucks and if my memory serves me right there were 6-8 wheels in each truck. The only thing that I remember about the rail system was a very tight call-out on the straightness and flatness of the rails. I saw no call-out for the rail weight.
After my part was over I thought about the problems they are facing on this job. This area of the yard is all delta, muck, and fill and first consolidated area is around 200 ft deep.
RE: Rail to concrete slab loading