Stress Control of Long Cantilever PRC Cap Beam in Construction Process

In this paper, the optimizing method to determine the tensioning procedure of tendons in a long cantilever prestressed concrtete cap beam through theoretical calculation is introduced, according to the case analysis of the bridge approach of Yongfeng Bridge in Ningbo. By optimizing the prestressing procedure of tendons in a long cantilever prestressed concrete cap beam, the stress of concrete in the beam is controlled in the construction process of the bridge. The theoretical analysis method is verified by the monitoring results of the bridge in the construction.