General Information
Figure 1 shows a cable-stayed bridge that is used by motorcycles, bicycles and pedestrians.
| Type | Single-span cable-stayed bridge |
| Main span | ≅ 130 m |
| Deck width | ≅ 2 m |
| Girder | Steel twin I-girder |
| Pylon | Reinforced concrete (A-longitudinal shaped) |
| Stay cable arrangement | Radial (two cable planes) |
Girder Deformation
Figure 2 shows a side view of a main span sector viewed from shore 1.
I-girder deformation near shore 2 is noticeable. Figure 3 shows the deformed region viewed from shore 2.
What are the main structural consequences?
Lateral Cables
Figure 4 shows a schematic partial three-dimensional view of a bridge sector.
The bridge has four lateral cables (two per side) and two external foundations per shore. Figure 5 shows two lateral cables viewed from the mid-span region.
The lateral cables are sagging. A main span and a shore connection are shown in figure 6.
| Main span | Shore (external foundation) |
Does the bridge have a structural safety or serviceability problem without the lateral cables?
Anchorages
Figure 7 shows the bridge entrance on shore 1.
Anchorages A and B are shown in figures 8 and 9, respectively.
The U-anchors are embedded in concrete.
| Front view | Back view |
The concrete is damaged, and the embedded U-anchor length is reduced.