抄録
Initial condition measurement of static deformation behavior before its service start and vibration characteristics on completed bridge of U-shaped steel girder bridge, are dealt with in this paper. The 3-dimensional Finite Element Method is used to model this tested bridge. The deformation characteristics of shoes was measured and detailed modeling of this effects needs to consider. And the natural frequency characteristics of their modes are examined using the ERA (Eigensystem Realization Algorithm) method. Simulation analysis considering road surface irregularity and coupling effects between vehicle and bridge was done. The data of this analysis is utilized to monitor the change of deformation and vibration characteristics due to the degradation and damage of bridge.
