# A.2.6: 用于断面优化的方法

通过查看一个横截面系列中的横截面列表，Karamba3D可进行横截面设计。程序从第一个条目开始再到下一个条目，直到其找到一个足以满足给定元件横截面力的横截面。

使用EN 1993-1-1中描述的步骤计算梁的利用率，即欧洲规范（EC）3[\[5\]](/chinese_1_3_3/appendix/bibliography.md)。它考虑了屈曲和横向扭转屈曲。不同截面力的叠加按程序2进行（请参阅EC 3的附件B）。$$C\_{my}$$、$$C\_{mz}$$和$$C\_{mLT}$$值限制为0.9。**“Utilization（使用率）”**运算器的**“Details（详细信息）”**输出端口反馈根据EC3计算得出的中间值列表（请参阅第[3.6.6](/chinese_1_3_3/3-in-depth-component-reference/3.6-results/3.6.6-utilization-of-elements.md)节）。有关在Karamba3D和Dlubals RFEM中实施的钢材设计程序详细比较，请参见[\[9\]](/chinese_1_3_3/appendix/bibliography.md)。


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