强度分析采用迁移矩阵法，稳定性分析采用样条能量法。
The strength is calculated by the transfer matrix method and stability is computed by spline energy method.
文中将GA用于三次样条函数拟合的系数求解，避开了矩阵求逆的繁琐问题，结合具体例子作了一些探索。
GA is used to obtain coefficients of cubic spline function fitting to avoid the inverse of the matrix and some work is made with an example.
文中导出了样条函数步长矩阵。
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