Bridge bearing Design
Bridge bearing Design
(OP)
In the NYSDOT Bridge manual and the AASHTO the largest load listed for standard sizes of bridge bearings only go up to about 1250 kN. Is their a place where I can find more bearings that use standard sizes that I can choose from or do I have to design each on a case by case basis? I am wondering if their is a way that I can get around designing each one?
At each pier location can I choose the maximum load and design for that one at each location along that pier line?
Also, If I use multirotation at the inside girders at a pier I must also use the same type of multirotational bearings at the outside bearings?
At each pier location can I choose the maximum load and design for that one at each location along that pier line?
Also, If I use multirotation at the inside girders at a pier I must also use the same type of multirotational bearings at the outside bearings?





RE: Bridge bearing Design
Usually, if there is no great difference (about less than 500kN), you can use the same load class at every pier line, not only along every single pier line; often it is cheaper to vary the allowable displacement class of your bearing along the bridge.
Anyway, abutment bearings are usually different (for continuous bridges).
I hope this can help.
Greetings
Ale
RE: Bridge bearing Design
Note what is acceptable to FDOT may not be acceptable to NYDOT. At least, you could use this as a staring point for your own evaluation.
Regards, RAF