Abstract
In dynamic design of cable-stayed bridges, evaluation of damping of structure is important. However, because it is difficult to evaluate damping ratio theoretically, it is general to measure it through vibration tests. Many vibration tests were performed mainly on steel cable-stayed bridges in the past. But enough data is not accumulated on prestressed concrete cable-stayed bridges because they are relatively new bridge type.
In this study, measured damping ratio in 16 cable-stayed bridges were analyzed to study the relationship between damping ratio and natural frequency, comparison with steel cable-stayed bridges, and damping ratio in a construction stage under cantilever erection method.
