Experimental Study on the Prestressed Tensioning Process of Double Layer Traffic Prestressed Concrete Box Beam

Double layer traffic prestressed concrete box beam makes full use of the internal space to achieve double layer traffic to improve the efficiency of urban traffic and the utilization of land resources, which has certain advantages in practical engineering. Therefore, the study analysis on the related force characteristics is of far-reaching significance. On the process of prestressed reinforced block tensioning, this paper studied and analyzed tensioning sequence and prestress loss of the double-layer pre-stressed concrete box girder, monitored the prestress loss in put piece of process in the process of prestressed tensioning and compared with regulation and relevant calculation theory values. Concurrently, the prestress losses after pulling were real-time tracked and monitored to track the rule of prestress loss.