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rail car loading
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.
you’d probably want to use a cooper e-80 loading.
here’s a few links:
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
+$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.
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.
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
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.
don't forget that the rails (and ties, if any) help distribute the e-80 wheel loads over a larger slab area.

2009-09-15, 04:14 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	rail car loading rail car loading 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. you’d probably want to use a cooper e-80 loading. here’s a few links: 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 +$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. 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. 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 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. don't forget that the rails (and ties, if any) help distribute the e-80 wheel loads over a larger slab area. __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]