Research On Inclined Prestressed Bridge Deck Pavement Technology Of Highway Concrete Beam Bridge

The early diseases of bridge deck pavement structure seriously affect the bridge capacity and driving comfort and safety,which has been widely concerned.Oblique prestressed concrete bridge deck pavement is a new type of bridge deck pavement structure.Rivet type vertical connection is used between prestressed concrete bridge deck pavement and beam slab to strengthen the integrity of bridge deck pavement and beam slab,and the deformation and displacement are synchronous.Compared with the existing reinforced concrete bridge deck pavement,due to the application of prestressing force,the paving layer prevents the concrete from cracking and avoids the problem of cracks The damage of bridge deck pavement,the stress of the structure will be significantly improved,and the service life of the pavement will be extended.In this paper,the mechanical model of oblique prestressed bridge deck pavement structure is established.Through the analysis of the influence of prestressed bridge deck pavement on its structure,it can be seen that the structural stiffness has been greatly improved,the structural performance has been greatly improved,the bridge deck deflection has been reduced,and the driving comfort has been improved.The detailed structure design and design standards,structural design methods and flow of oblique prestressed concrete bridge deck pavement are proposed It is the first time to apply the construction technology of oblique prestressed concrete pavement in Gaoqiao bridge of Shangdan expressway reconstruction.The loading tests of Gaoqiao bridge are carried out under six different working conditions.The test show that the stiffness of the whole bridge superstructure meets the standard,which is consistent with the theoretical analysis.