PSI - Issue 62

Rossella Venezia et al. / Procedia Structural Integrity 62 (2024) 796–808 Rossella Venezia and Alessio Lupoi / Structural Integrity Procedia 00 (2019) 000 – 000

800

5

Fig. 1. Plan view of the Tagliamento II bridge (Nord roadway).

Fig. 2. Longitudinal profile of the Tagliamento II bridge (Nord roadway).

Fig. 3. Transversal profile of typical four beams deck with triple stem frames pier (left) and five beams deck with quadruple stem frames pier (right).

Table 1. Piers main data.

Pier no.

Total height [ m ]

Column section [ cm ]

Cross beam section [ cm ]

1

13

 210  160  160  160  160

200x400 200x400 200x400 200x400 200x400

from 2 to 5 from 6 to 9

from 12.5 to 11.5 from 11 to 10.5

from 10 to 13 from 14 to 15

9

from 8 to 7.5

The support scheme is fixed-movable type in the longitudinal direction. In the transverse direction, the movement is blocked by a support on each of the two alignments. From span n.1 to span no. 14 the deck self-weight plus the dead loads sums up approximately to 9580kN per span, while it sums up to 12040kN per span for span no. 15 and no. 16. The strengths of materials are inferred from carried out tests: the mean strength of reinforced concrete is assumed equal to 45.5MPa, the one of steel is equal 461.3MPa. It is noticed that the gently curved shape in plan is considered in the analysis. A thoroughly study on the application of the traditional pushover method to bridge is carried out in. The bridge configuration is “irregular”, which makes this application of particular interest if the limits of the pushover procedure are to be investigated.