Study On Construction Control Of Bajianghe Prestressed Concrete Continuous Girder Bridge

Continuous girder bridge cantilever construction is a common construction method widely used in municipal bridge engineering.Continuous girder cantilever construction is the construction method of putting concrete beam body in symmetrical section from top to sides by hanging pier on top of bridge pier.In short,it is the construction method of symmetrically hanging out the extended beam from the pier.Continuous girder bridge cantilever construction is a common construction method widely used in municipal bridge engineering.Continuous girder cantilever construction is the construction method of continuous girder suspension on the top of girder piers temporary consolidation,the use of girder top to symmetrical section load measurement of concrete girder body,the post-tension-stress and final closing of the girder structure during the period of continuous girder and final closing.As a result,there is a deviation between the theoretical linear and internal force state and the real structural state of the cantilevered continuous beam bridge structure in the construction,and a reasonable mechanical calculation model is constructed for the prestressed concrete cantilever continuous the object,flow and main content of construction monitoring are selected as the case study,and the factors that affect the alignment and stress of the bridge are analyzed.By means of Midas Vivil finite element analysis software,the simulation structure operation model of the cross-river bridge is constructed.According to the monitoring data collected on the spot and the analysis of the theoretical results,the line and stress of the bridge structure after the bridge segment and bridge formation are satisfied with the standard limit,and the expected monitoring target of the bridge structure is achieved.