| 摘要 |
<p>Provided are a symmetric rib structure and a method thereof. A structural web comprises web center surface; and multiple web enhancing parts symmetric for the web center surface. A flange is formed around the symmetric structure, comprises a fixer hole central line having a fixer hole aligned to the web center surface, and is formed on the flange. And the cut part is formed on the structural web around the fixer hole, and two support columns are combined with the flange on both sides of the cut part.</p> |
