Sensitivity Analysis of Construction Monitoring Parameters for Segmental Cast-in-place Prestressed Concrete Continuous Beam
The continuous beam generally needs to undergo multiple system transformations during the construction process.Different construction sequences and calculation parameters have a great influence on the bridge alignment and stress.Taking the prestressed concrete continuous beam of a highway as the research object,this paper uses the finite element software Midas Civil to establish the calculation model,and analyzes the influence of box girder weight,prestress loss and support stiffness on bridge alignment and stress.The results show that the weight of concrete and the loss of prestress have a great influence on the alignment and stress of the continuous beam.During the construction process,the alignment and stress of the bridge need to be monitored,and the calculation parameters should be adjusted in time to make the alignment and internal force of the main beam meet the design requirements after the bridge is completed.
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