On the Deformation Performance of Prestressed Concrete Structures under Long-term Loading Conditions

The deformation performance of prestressed concrete structures during the service period of the structure is affected by the use environment, design and construction. Through actual engineering case analysis, monitoring data and finite element analysis results show the deformation of the bridge under long-term load, including overall displacement and crack width. In response to these deformations, the engineering team took reinforcement and maintenance measures, such as strengthening support structures, repairing cracks, and adding monitoring equipment. According to the specifications and actual usage, the deformation, concrete shrinkage and prestressed creep data of the concrete structure are calculated and statistically analyzed. By comprehensively considering the results of design, construction and monitoring analysis, the deformation performance of the prestressed concrete structure under long-term load can be effectively evaluated and controlled. Ensure the safe and stable operation of the structure.