Appearance Inspection and Finite Element Analysis of Posttension Concrete Horizontal Curved Box Girder Bridge: Static and Dynamic Analysis.

The primary goals of this research are to examine the structural appearance of a horizontally curved bridge to identify any damages within the bridge structure, examine its dynamic and static reactions below moving load and service load (load combination) using CSI-Bridge Ver. 25, and to compare the static results with allowable values in the standards to determine the structural state of the bridge. Considering the findings for the appearance inspection, static and dynamic analysis, the bridge's superstructure and substructure did not sustain any damage. The measured values of static responses, such as positive bending moment, negative bending moment, compression stress, vertical deflection, and tensile stress, were found to be below the allowable thresholds in the ASSHTO LRFD-Bridge 2017, implying that the structural stiffness, bearing capacity, and load resistance are adequate, and that downward vertical deflection and cracks are unlikely to occur with structural component parts of the bridge under these types of designed loads. Dynamic research revealed that the dynamic natural frequency was lower than the live load natural frequency, indicating that the bridge structure is in a prolonged state of vibrating due to moving loads. [ABSTRACT FROM AUTHOR]