| 摘要 |
The element 10 consists of a vertical gusset plate 12 surrounded, at its upper part, by the plate 11 supporting the step 9, at its front part, by a front flange 13, at its rear part, by a rear flange 14 and at its bottom part, by a lower flange 15 so as to obtain a profile which is substantially I-shaped, both in a horizontal cross-section and in a vertical cross-section taken across the string element. <IMAGE>
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