Analysis about influence of Discontinuous Construction of large-span girder Bridge on its Completed State

In order to evaluate the safety of bridge through the day release,the action response analysis and safety check is analyzed based on the yellow river bridge(85+6×150+85)m engineering in Inner Mongolia at the Longest Cantilever Construction Stage.This paper chooses the soil spring stiffness and Maxwell Model to simulate the pile-soil and pier-girder deformation effect respectively,and the linear and nonlinear models were also established in consideration of the damping effect.The results show that the deformation of the Longest Cantilever arms would increase obviously comparing to the continuous construction,the moment of the girder would increase and the accumulation of the normal stress on the edge of the girder would decrease.