Numerical Stimulation Of Rare-Reinforced Concrete Railway Bridge Pier's Seismic Behavior

Because of the low reinforcement ratio of the reinforced concrete railway bridge pier leading to poor ductility and prone to failure during the earthquake, in this paper, through the establishment of numerical analysis models of the rare-reinforced concrete railway bridge piers under seismic action, a comparative analysis of different reinforcement ratio and stirrup ratio have studied to find the impact to the failure patterns of the rare-reinforced concrete railway bridge pier, hysteretic curves, skeleton curves and energy dissipation capability, revealing its work during the earthquake, making its anti-seismic design specifications and related technical parameters to the rare-reinforced concrete railway bridge piers in order to improve the brittle failure of the design methods and the seismic performance of these piers to increase their resistance to the process in the earthquake disasters.In this paper, the rare-reinforced concrete railway bridge pier model has established by using the ANSYS software, the main contents of seismic studies include:(1) In this study, the seismic performance of rare-reinforced railway bridge pier non-linear finite element method is introduced, established the rare-reinforced railway bridge piers finite element model, and the validity of the finite element method adopted to this model's seismic behavior is verified.(2) Through the establishment of different reinforcement ratio of the rare-reinforced concrete railway bridge pier model under cyclic loading using the finite element method to study the impact of different reinforcement ratio of such modes' failure patterns as well as the piers hysteretic behavior, energy dissipation capacity and displacement ductility.(3) Through the establishment of different stirrup ratio of the rare-reinforced concrete railway bridge pier model under cyclic loading using the finite element method to study the impact of different stirrup ratio of such modes'failure patterns as well as the piers hysteretic behavior, energy dissipation capacity and displacement ductility.(4) According to the practical engineering—Guizhou HuaTuPo super-large railway bridge,8th rare-reinforced concrete bridge pier's 3-d nonlinear finite element model is established. Under cyclic loading of cross-bridge direction and in axial direction, whether assignment inner layer stirrups to the bridge pier will impact the seismic behavior is studied.This paper may provide a reference for the study of the rare-reinforced concrete railway bridge pier's seismic theory and design methods in order to improve its seismic performance.