GNGTS 2018 - 37° Convegno Nazionale

GNGTS 2018 S essione 2.2 375 characterised by high flexibility and small thickness-to-size ratios. Even more restrictive design requirements are given by standards for seismic actions, in terms of deformation capacity of the glazing components with respect to the other load-bearing elements. Such a limitation requires careful detailing of connections (that should allow movement accommodation but preserve the redundancy of the system) and a reliable estimation of the dynamic characteristics for the glass assembly to verify (CNR-DT 210/2013). Experiments. The Experimental Modal Analysis of the Aquileia footbridge was carried out in November 2017 (T=4°, RH=9%). The full set of measurements was performed using the MEMS accelerometers prototyped in (Bedon et al. 2018). Given the average size of glass panels, six sensors were used and optimally located on the roof (i.e., # n sensors in Fig.1(d)). Output-only tests data were recorded, based on human induced vibrations (Fig.2(a)). More in detail, the experiments were first performed on the walkway panels characterised by Fig. 2. - Experimental and numerical analysis of the walkway (G2-panel). (a) Vibration test measurements, with (b) fundamental vibration mode of the roof panel (SMIT). (c) FE model of the G2-panel (ABAQUS), axonometry and details.