Modal Test Analysis of Prestressed Concrete Simply Supported Beam Bridge

As an important branch of the vibration engineering theory, modal analysis and experimental modal analysis provide a powerful tool for a variety of structure design and performance assessment. The testing result is often used as effective standards for product performance evaluation. All kinds of dynamic design method carried out around its analysis results makes more modal analysis being an important basis of structure design. The mechanical performance of a prestressed concrete bridge is analyzed and researched with modal testing on the field in the paper, the result shows the safety and mechanical performance evaluation of the bridge can be completely under the operating condition without interrupting the traffic with the modal testing and analyzing of bridge.