General Information
Figure 1 shows a hybrid cable-stayed suspension bridge that is used by motorcycles, bicycles and pedestrians.
![Hybrid cable-stayed suspension bridge.](bridges/hybrid-cable-stayed-suspension-bridges/bridge-4/1-hybrid-cable-stayed-suspension-bridge.jpg)
Main span: | ≅ 80 m |
Deck width: | ≅ 4 m |
Pylon: | Steel trusses (H-shaped) |
Girder: | Steel transverse beam |
Stay cable arrangement: | Radial (two cable planes) |
Suspension System
Figure 2 shows a schematic lateral view of the bridge.
![Lateral view of a hybrid cable-stayed suspension bridge.](bridges/hybrid-cable-stayed-suspension-bridges/bridge-4/2-lateral-view.jpg)
The suspension system consists of stay cables, tie cables, and hanger rods. Figure 3 shows a side view of a main span sector.
![Side view of a hybrid cable-stayed suspension bridge.](bridges/hybrid-cable-stayed-suspension-bridges/bridge-4/3-cable-system.jpg)
The load path of the suspension system is shown in figure 4.
The mid-span stay cables S1 and/or S2 are always used as a load path. Load A is transferred to the the pylons and anchorages by hanger rod H1 and stay cables S1 and S2; load E is transferred by hanger rod H8, stay cable S6, four tie cables, and stay cable S1. Figure 5 shows the bridge in the mid-span region.
![Mid-span region of a hybrid cable-stayed suspension bridge.](bridges/hybrid-cable-stayed-suspension-bridges/bridge-4/5-mid-span-region.jpg)
The mid-span node is shown in figure 6.
![Structural mid-span node.](bridges/hybrid-cable-stayed-suspension-bridges/bridge-4/6-node.jpg)
The stay and tie cables' end fittings consist of closed bridge sockets, and the hanger rods are U-shaped. The forces are transferred by four plates and two pins. The remaining nodes are arranged as shown in figure 7.
![Structural node.](bridges/hybrid-cable-stayed-suspension-bridges/bridge-4/7-node.jpg)
The forces are transferred by a single pin.