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以张家口通泰大桥为背景,基于ABAQUS非线性有限元软件构建桥梁结构模型,根据第一类特征值分析法与第二类非线性分析法对其进行稳定性分析。通过结构对不同稳定性分析方法和不同模型参数的响应,研究结构本身的特性及不同分析方法对结构稳定系数的影响并进行比较,得出第二类非线性稳定性分析结果更贴近真实值更可靠。
Based on Zhangjiakou-Tiantai Bridge, a bridge structural model is constructed based on ABAQUS nonlinear finite element software, and its stability is analyzed according to the first eigenvalue analysis method and the second nonlinear analysis method. Through the structure response to different stability analysis methods and different model parameters, the characteristics of the structure itself and the influence of different analysis methods on the structural stability coefficients are studied and compared. The results of the second type of nonlinear stability analysis are closer to the true values reliable.