Research Article
Assessment of Design and Retrofitting Solutions on the Progressive Collapse of Hongqi Bridge
Table 1
Dimensional and reinforcement details of the pier systems.
| | Type of pier | Diameter of columns (m) | Reinforcement of columns (m) | Width of cap beam (m) | Longitudinal stiffness of column (MN/m) |
| | Rectangular pier (original bridge) | Variable in height | Variable in height | 1.20 | 45.07 | | Two-column | D = 1.20 | 70Φ18 (spiral: Φ[email protected]) | 1.30 | 47.35 | | Three-column | D = 1.10 | 55Φ18 (spiral: Φ[email protected]) | 1.20 | 46.23 | | Four-column | D = 1.00 | 48Φ18 (spiral: Φ[email protected]) | 1.10 | 45.44 | | Five-column | D = 0.95 | 38Φ18 (spiral: Φ[email protected]) | 1.05 | 46.24 |
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