Linear Stability Analysis of Continuous Rigid Frame Bridge with High Thin-walled Piers

This paper takes the Longtan River Bridge as an example, chooses two kinds of elements: beam element and shell element, and establishes the finite element model.The linear stability analysis is carried out with the beam and the shell element respectively by the FEM program ANSYS. Conclusions show that the beam element model can also receive satisfying results on practical projects.The comparative analysis of two models provides a few meaningful references for designing the bridge.