General Information
Figure 1 shows a pedestrian suspension bridge.
| Type | Single-span suspension bridge |
| Main span | ≅ 50 m |
| Deck width | ≅ 2 m |
| Deck width to main span ratio | ≅ 1:25 |
| Pylon | Reinforced concrete (H-shaped) |
| Girder | Steel half-through truss |
Back Stay Cables
Figure 2 shows a schematic lateral view of the bridge.
Besides the main cables, each pylon is connected to two back stay cables. Figure 3 shows a pylon viewed from the front.
Main and Back Stay Cables Anchorage
Figure 4 shows a side view of the main and back stay cables anchorage on shore 1.
Main and back stay cables are connected to rebar anchors via different members: the main cable by a turnbuckle and a looped chain; the back stay cable, by a turnbuckle and a cable. Figure 5 shows an enlarged view of the rebar anchors connection.
What are the main problems?
Hanger Cables
Figure 6 shows a schematic lateral view of the bridge.
The hanger cables in the mid-span region are not connected to turnbuckles, while the remaining hanger cables are connected to turnbuckles.
What are some possible reasons for the used turnbuckle arrangement?
Figure 7 shows a hanger cable connected to a turnbuckle and a hanger cable not connected to a turnbuckle.
| Connected to a turnbuckle | Not connected to a turnbuckle |
Hanger Cables to Half-Through Truss Connection
Figure 8 shows a schematic partial three-dimensional view of a half-through truss sector.
Each hanger cable is connected to the half-through truss upper chord node by an additional cable, as shown in figure 9.
| Not in the mid-span region | Mid-span region |
What are other possible connection solutions?
Half-Through Truss Pylon Region
Figure 10 shows a schematic lateral view of the bridge.
The half-through truss in the pylon region includes an additional steel unit. Figure 11 shows a side view of the pylon region.
