General Information

Figure 1 shows a pedestrian suspension bridge.

Pedestrian suspension bridge.
 Pedestrian suspension bridge in a park
Type Three-span suspension bridge
Main span ≅ 45 m
Deck width ≅ 1.5 m
Deck width to main span ratio ≅ 1:30
Pylon Steel and reinforced concrete (H-shaped)
Girder Steel longitudinal beam

Girder-Pylon and Girder-Abutment Connections

Figure 2 shows the girder in the pylon region.

Girder (pylon region).
Girder in the pylon region

The girder is not connected to the pylon. Figures 3 and 4 show the girder in the abutment region.

Girder (abutment region, top view).
Girder in the abutment region

There is no connection between girder and abutment.

Girder (abutment region, side view).
Girder in the abutment region
  • What are some possible reasons for not connecting the girder to the pylons and abutments?
    What are the main structural consequences?
  • Wire Rope End Termination

    Figure 5 shows two hanger cables at their bottom ends.

    Hanger cables.
    Hanger cable termination using U-bolt clamps

    The hanger cables are made of steel wire ropes, and the end termination consists of U-bolt clamps. The saddle parts are on the dead end of the cables, while the U-parts are on the live end of the cables. The number of U-bolt clamps per hanger cable is not equal: two on the left hanger cable, and three on the right hanger cable. There are no wire rope thimbles between the plates and the hanger cables.

  • Is the trerminal efficiency of the left hanger cable the same as the right hanger cable?