Research Article
The Permitted Dimension of Guide Sign in Freeway Tunnel Restricted by the Geometric Space of the Tunnel Vault
Table 2
Parameter values for the guide sign dimension model.
| | Two-lane one-way tunnel | Three-and four-lane one-way tunnel | | R (m) | h0 (cm) | B (cm) | h3 (cm) | Ht (cm) | R (m) | h0 (cm) | B (cm) | h3 (cm) | Ht (cm) |
| | 612 | 153.3 | 475 | 10 | 500 | 1060 | 134.5 | 850 | 10 | 500 | | 570 | 153.5 | 475 | 10 | 500 | 967 | 107.8 | 850 | 10 | 500 | | 543 | 153.6 | 437.5 | 10 | 500 | 875 | 81.0 | 662.5 | 10 | 500 | | 514 | 153.6 | 437.5 | 10 | 500 | 782 | 54.3 | 662.5 | 10 | 500 |
|
|
