基于支承法兰盘的结构特征，通过目标函数的建立、设计变量的选取以及约束条件的确定建立了优化设计的有限元模型，并对法兰盘进行了静力分析。

Based on the structural characteristics of bearing flange, the optimization model is established according to the objective function, design variables and constraints, and make a static analysis.

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静力因子决定了滑坡空间分布特征及规律。 动力因子与新滑坡的变形失稳及老滑坡的再次活动密切相关。

Static factors determine the characteristics of landslide spatial distribution, while dynamic factors play an important role in the new landslide occurrence and old landslide reaction.

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特别分析了随着动力特征参数由零增加到一定值后，由静力失稳模态过渡到动力失稳模态的过程。

Especially, the process that the static instability mode transforms into the dynamic instability mode is simulated as the dynamic characteristic parameter increases to a certain value from zero.

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