Temperature Loads

[shreev10]

Just wanted to know how the design of the bridge deck is done for temperature loads.
is it that the temperature loads are reduced by a factor that relates to the creep coefficient of concrete.
Thanks

 

[bridgebuster]

If you are designing a concrete deck supported on stringers/girders/boxes, there is no temperature load.

 

[IDS]

Temperature effects are short to medium term cyclic loads, so wouldn't normally have any reduction for creep. If you are looking at movements due to annual temperature variation I suppose you could make some reduction for creep, but given the uncertainties of creep and shrinkage behaviour I'd suggest it would be a better idea to have some in-built conservatism by ignoring creep (unless creep resulted in a critical design case, in which case you should definitely include it).

Doug Jenkins
Interactive Design Services

http://newtonexcelbach.wordpress.com/