PSI - Issue 62

Massimiliano Bregolin et al. / Procedia Structural Integrity 62 (2024) 916–923 M. Bregolin et al. / Structural Integrity Procedia 00 (2019) 000 – 000

918

3

DTM, it was defined as an elevation difference of approximately 50 cm between the two ends of the footbridge. Considering the total length of the structure, about 50 meters, the slope is approximately 1%.

Fig. 1. Goito bridge: (a) photos and floor plan, (b) large-scale map of territorial context obtained through GIS Analysis.

Fig. 2. Goito cycle-pedestrian bridge: (a) diagram, (b) axonometric view.

In Fig. 2 the structural scheme is reported and in Tab. 1 the technical data are summarized.

Table 1. Technical data of the cycle-pedestrian bridge.

Element Length

Measure

Element

Measure

48.6 m 27.4 m

N° deck slab

10

Central span length

Deck slab length Deck slab width Parapet height

5.0 m 2.0 m 1.2 m

Truss column

10.3 ÷ 10.9 m

Central span deflection

6.0 m 1 - 4.5

Deflection/span

Deck weight with decking and

1.082 kN / m 2 4.903 kN / m 2

N° supporting cables

2

Load Capacity

N° vertical suspension cables

18

3. Previous studies In December 2020, following alerts from citizens regarding excessive deformability, the Municipality of Padua issued a technical report based on a visual analysis, which revealed significant degradation of the structure (Padua Municipality, 2020). In February 2021, Metra Lab Srl † was commissioned to conduct investigations to assess the behavior of the footbridge (Metralab, 2021). After two months of maintenance and reinforcement work, the Administration announced the reopening of the footbridge, with the limitation of conducting bike walking. To limit stress on the structure, two rows of New Jersey barriers were placed, so cyclists and pedestrians are obliged to walk along the central axis of the structure. The renovation work and the investigation campaign generated a cost of 50,000

† A company that provides experimental engineering services in the field of in-situ testing and controls.