Research Article
The Optimal Design of an Arch Girder of Variable Curvature and Stiffness by Means of Control Theory
Table 3
Comparison of the most important results for the initial task and optimisation tasks 1-4.
| | Task no. | Arch axis curvature
| Cross-section height
| Rise of an arch
| Volume of concrete
| Percentage of material savings
|
| 0.
(initial task) | parabolic arch, not optimal
|
| 7.92 | 94.294 | - |
| | 1. |
|
| 5.56 | 75.684 | 19.74 |
| | 2. |
|
| 5.97 | 69.812 | 25.96 |
| | 3. |
|
| 5.74 | 75.596 | 19.83 |
| | 4. |
|
| 6.36 | 69.361 | 26.44 |
|
|
