曲线段箱梁采用单梁模型计算时梁顶与支座顶约束刚度模拟取值的讨论

Discussion on Simulation Value of Restraint Stiffness of Beam Top and Support Top When Single Beam Model Used for Box Girder with Curved Section

弯桥计算中,支座反力计算结果的准确性直接影响全桥的计算结果及安全性。因此,采用有限元软件进行计算模拟时的边界条件的合理性至关重要。结合有限元计算软件分别建立单梁模型和梁格模型进行支座反力的比较,对梁体与支座之间的简化约束条件进行讨论。

In the calculation of curved bridge, the accuracy of the calculation results of support reaction directly affects the calculation results and safety of the whole bridge. Therefore, the rationality of boundary conditions is very important when using finite element software for simulation. Combined with the finite element calculation software, the single beam model and the beam grillage model are separately established to compare the support reactions. This paper discusses the simplified constraints between the beam body and the support.