Research Article
Longitudinal Seismic Behavior of a Single-Tower Cable-Stayed Bridge Subjected to Near-Field Earthquakes
Table 6
Observed damage during the test.
| PGA | Damage height | description |
| 0–0.25 g | — | No damage. | 0.30 g | = 0.65 m | First crack appeared at the bottom of tower leg. | 0.30~0.50 g | = 0.65 m | First crack extended to gradually form a circle. | = 0.80~1.20 m | Several parallel cracks appeared just above the first crack. | | = 0.80~1.20 m | Cracks extended horizontally. | 0.6~0.70 g | = 1.4 m~3.5 m | Several parallel cracks appeared and were distributed in parallel at a nearly equal distance of tower width (around 0.35 m). | = 5.8 m | Cracks appeared at top tower 0.2 m above the section where two skewed legs intersect (Section C-C in Figure 3). | 0.75 g | = 5.8 m | Cracks extended and penetrated Section C-C. | 0.80 g | = 5.8 m | Considerable concrete spalling and exposed longitudinal bars were observed at Section C-C. |
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