The Influence of Buckling Mode and Buckling Stability Coefficient of Rigid-Frame Bridge during Construction in Cold Region

The study aims to further standardize the construction process, improve quality, and ensure stability of infrastructure construction. continuous rigid-frame bridge is taken as research object, finite element model body established by using beam element, overall analyzed in completion stages. Moreover, coefficient buckling mode are under different working conditions each stage, linear variation law summarized, geometric nonlinear analysis method through specific data. safety factor obtained, influence wind load initial defects on explored. results show that with increase height, decreasing, single-limb thin-walled hollow pier relatively larger than double-limb pier. During construction, asymmetric self-weight caused asynchronous cantilever pouring has greatest impact bridge. constructed 0.3% 1.27% lower ideal state, respectively. defect 12.65% greatly reduced. have important reference significance