General Information
Figure 1 shows a single-lane road beam bridge that is used by not heavy vehicles.
| Main span | ≅ 10 m |
| Girder | Prestressed concrete beam/reinforced concrete solid slab |
RC Solid Slab Sector
Figure 2 shows a schematic three-dimensional view of the bridge.
The bridge has eight equal spans and a passing place (spans 4 and 5). The girder of span 4 consists of an RC solid slab, while the girder of the remaining spans consists of a prestressed concrete M-beam. The girders are supported by pile bents: four-pile bents for the passing place sector, and three-pile bents for the single-lane sectors. Figure 3 shows a roadway view of the passing place region, while figure 4 shows a side view of it.
Figure 5 shows a side view of spans 3 and 4.
The height of the M-beam (hb) is bigger than the thickness of the concrete slab (hs).
Is the load capacity of the passing place spans (4 and 5) the same?
Assuming a slab thickness (hs) of about 20 cm. Is the slab prestressed?