General Information
Figure 1 shows a pedestrian suspension bridge.
| Type | Three-span suspension bridge |
| Main span | ≅ 40 m |
| Deck width | ≅ 1.5 m |
| Deck width to main span ratio | ≅ 1:27 |
| Pylon | Reinforced concrete |
| Girder | Steel truss |
Truss Girder Without Verticals
Figure 2 shows a side view of a truss girder sector.
The truss girder does not have verticals, and the diagonals of side 1 are inclined in the opposite direction to the diagonals of side 2 (yellow dashed lines). The truss girder carries also two pipes. Figure 3 shows a schematic three-dimensional view of a truss girder sector.
The upper and bottom chords are made of H-sections, while the remaining truss members are made of U-sections.
Pylons
Figure 4 shows a pylon viewed from the front, while figure 5 shows an enlarged view of its top-end region.
The the saddles are placed over the cross-beam.
What are the main structural consequences?
Bridge Entrance
The bridge entrance has two reinforced concrete columns (A and B), as shown in figure 6.
A steel structure is installed on the top of each column, as shown in figure 7.
The steel structure consists of vertically arranged steel plates; a longitudinal plate, which has a hole in the center, and eight transverse plates. The main cable passes through the hole of the longitudinal plate, and the steel structure is connected to the column by a base plate and anchor bolts.
Hanger Cable to Main Cable Connection
Figure 8 shows a hanger cable to main cable connection.
The hanger cable passes over the main cable, and the U-bolt clamp passes over the hanger cable.