Active Underpinning Technology Application of Subway Crossing Statically Indeterminate Bridge

Pile foundation underpinning technology is suitable for the strict requirements of the engineering deformation.Through the construction impact on statically indeterminate bridge analysis,in order to grasp the deformation characteristics and construction control requirements,the effective active underpinning design and construction scheme was formulated.Through dynamic monitoring of the whole construction process,this paper verified the validity of the design scheme,which ensured the smooth implementation of the safety of the bridge and engineering.