General Information
Figure 1 shows a beam bridge.
| Main span | ≅ 20 m |
| Girder | Prestressed concrete box-beam |
Double-Column Pier
Figure 2 shows a schematic lateral view of the pier arrangement.
The total bridge length (l) is about 220 m. There are eleven spans and ten double-column piers (1 to 10), and the foundation consists of a pile cap and piles. The pile caps are placed on two elevation levels (A and B). The pier configuration is based on its height and includes tie beams and RC members; the latter are installed on piers 5 to 9 on elevation A . Figure 3 shows pier 10, figure 4 shown pier 4, and figure 5 shows pier 5.
The columns have a height h ≅ 40 cm, and the piles are partially embedded in the ground.
A pile cap uses about eighteen cubic meters of reinforced concrete.
The column height (h) is about 6.5 m. The RC members are installed between the pile caps and the pier caps and have the same geometry as a pile cap; that gives a mass of 45 tons per RC member (RC density assumption of 2500 kg/m3).