Key Construction Technology of the Joint Section of Steel Box Girder and Concrete Box Girder for Yongjiang Railway Hybrid Girder Cable-stayed Bridge

The key point of hybrid girder cable-stayed bridge is the connection of steel box girder and concrete box girder, which acts as the main structure for force transmission. Module assembling construction method was applied to the joint section of steel box girder and concrete box girder in the construction process of Yongjiang railway hybrid girder cable-stayed bridge. Details of the hoisting,slide and positioning of the joint section module,BIM simulation technology of PBL shear keys and positioning of pre-stressing,and partition casting technology of shrinkage compensating concrete were introduced.Also,the construction control points of the joint section were summarized.