RR Bridge Stiffeners
RR Bridge Stiffeners
(OP)
I am designing a Through Girder RR Bridge for BNSF and I need help with the intermediate stiffener.
I am bolting a WT stiffener to the web for the intermediate stiffeners, but I can't find anything in the AREMA code to give me a criteria for designing the bolted connection. (AISC had equation 1.10-4 to give a shear flow for the connection.)
I also wondered if I had to stagger the bolt pattern or can I provide a uniform pattern of two parallel rows of bolts?
I would appreciate any help offfered.
I am bolting a WT stiffener to the web for the intermediate stiffeners, but I can't find anything in the AREMA code to give me a criteria for designing the bolted connection. (AISC had equation 1.10-4 to give a shear flow for the connection.)
I also wondered if I had to stagger the bolt pattern or can I provide a uniform pattern of two parallel rows of bolts?
I would appreciate any help offfered.





RE: RR Bridge Stiffeners
CN does not allow welding of the intermediate stiffeners, except at the top for connection of the stiffener to the top flange of the thru girder. CN has some standard drawings for the bolted connection, but not much detail. All their drawing says in regard to the connection is to use a 4” max bolt spacing vertically.
RE: RR Bridge Stiffeners
RE: RR Bridge Stiffeners
By the way, I’m using a welded “T” section with one line of bolts on either side of the stiffener.
RE: RR Bridge Stiffeners
Keep up the good work!