The evaluation of structural performance of the simple-supported beam bridge base on the Midas

The static and dynamic load tests are carried out on the bridge. The calibration is obtained when the deflection with static load and structure frequency with dynamic load are analyzed and are compared with finite element analysis results. Both strain calibration and deflection calibration meet the requirements of the relevant standards of the bridge engineer manual. The maximum deflection meets requirements of the Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts, it indicates that the T-beam bridge has more safety reserve. But the frequency of the site testing is bigger than that of loading test. That means the whole stiffness of the bridge is bigger, and can easily generate the phenomenon of resonance.