Bearing Replacement Technology Of The Double-slope Curved Girder Bridge With Three Spans

Since1990s, the prestressed concrete bridge is used widely in urban road construction nowadays. It is found in the bridge regular inspection that most bridge bearings were suffered from damage or abnormal displacement due to the problems of quality and construction. Therefore, the bearing replacement is of great importance in bridge reparing. The structure of the double-slope curved girder bridge with three-span is complex. What’s more, the design and construction control is quite difficult. Consequently, the cause of the damage bearings is complicated.This paper is on the basis of the16#-19#section curved beam bearing damage of one bridge across the lake in East Shaoxing. Firstly, according to the disease analysis of the curved beam bearing damage, the synchronous jack-up project of the entirety bridge was made out and the jack-up security was checked by finite element method. Secondly, The factor influencing the displacement deviation of curved beam bearing damage was studied.. The designing scheme of the curved girder bridge rectifying was made by analyzing beam displacemnet and comparing methods to deal with the abnormal shift.Finally, synchronous jack-up and curved beam correction bearing replacement method is put forward in practice. Considering the construction difficulty of this bridge, synchronous jack-up and curved beam correction bearing replacement method is put forward in practice.