Simulation Analysis of Construction Control of Pylon of a Single Pylon Cable-Stayed Bridge Without Backstays

The concrete for pylon of the single pylon cablestayed bridge without backstays on the Light Rail Transit in Changchun City was cast in situ on scaffolding.Since it was required that the settlement value of the arm section of the pylon should not be greater than 2 cm,the construction technique of pre-applying the jack-up force to the arm section of the pylon was applied in construction.In this paper,the simulation analysis of various construction stages of the pylon is made.The analysis shows that the construction technique of applying the jack-up force can meet the requirements for stress and deformation in the construction of the pylon.The operation with the construction technique is simple,reliable and can also ensure the construction time schedule.