Impact loading on bridge superstructure
Impact loading on bridge superstructure
(OP)
Hi chaps,
I've been tasked with looking at the effect of an accidental impact on a replacement bridge we're designing(the new design does not meet the clearance over footways). I've been searching the eurocode and it seems to me that accidental actions are always taken as with a partial factor of 1.0 so, effectively I'm just taking the design value for this type of road - 410kN.
I've modelled this as point load going into the edge girder as the N.A so I've classified and checked the section for shear.
It's probably worth mentioning that this is not at the detailed design stage yet.
So my question really, any comments and thoughts on what I've done. Any other useful knowledge about this topic(accidental loading to EC or otherwise) anyone may wish to share.
Thanks
Ed
I've been tasked with looking at the effect of an accidental impact on a replacement bridge we're designing(the new design does not meet the clearance over footways). I've been searching the eurocode and it seems to me that accidental actions are always taken as with a partial factor of 1.0 so, effectively I'm just taking the design value for this type of road - 410kN.
I've modelled this as point load going into the edge girder as the N.A so I've classified and checked the section for shear.
It's probably worth mentioning that this is not at the detailed design stage yet.
So my question really, any comments and thoughts on what I've done. Any other useful knowledge about this topic(accidental loading to EC or otherwise) anyone may wish to share.
Thanks
Ed






RE: Impact loading on bridge superstructure
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RE: Impact loading on bridge superstructure
RE: Impact loading on bridge superstructure
Cheers
RE: Impact loading on bridge superstructure
Does this look like a reasonable approach? Any and all comments welcome, I really learn a lot on this forum.
Thanks
RE: Impact loading on bridge superstructure
Try making simplifying conservative assumptions and see what impact force it takes for the web to yield in bending. I believe the force will be so low that errors in the accuracy of the assumptions will be unimportant. Also check to make sure the beam's anchorage to the superstructure does not fail on impact.
www.SlideRuleEra.net
www.VacuumTubeEra.net
RE: Impact loading on bridge superstructure
Apologies for not saying this earliet! :)