hermal movement in concretesteel curved composite structur

huangyhg

thermal movement in concrete/steel curved composite structur
is there a difference in how a curved section of a bridge reacts to temperature change as oppossed to a straight section?
if the bearings are articulated to allow movement around the curve does it effectively behave in the same way...?
effectively yes, however you must re  
i have always oriented the expansion bearing for each girder along a chord from the fixed bearing.   
years ago i had thermal expansion explained to me as an exact analogy to enlarging a photograph - everything expands proportionally. one of the best examples is what happens to a hole in a solid structure. the diameter of the hole increases as temperature rises. it is easy to mistakenly think that the diameter would decrease.