PSI - Issue 5

C.A. Prato et al. / Procedia Structural Integrity 5 (2017) 332–339 C.A. Prato/ Structural Integrity Procedia 00 (2017) 000 – 000

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Table 2. Maximum value of vertical acceleration at mid-span for various passages of the reference truck at both sides of the mid-span section of the bridge. Speed [km/h] Test Nº Acceleration [m/s 2 ] Sensor 1 Sensor 2

1 2 3 1 2 1 2 3 4

0.307 0.343 0.331 0.511 0.523 0.396 0.997 0.614 0.567

0.386 0.522 0.581 0.675 0.759 0.642 1.376 1.072 1.093

20

40

60

(a)

0.12

Sensor 1 Sensor 2

0.1

0.02 Acceleration [m/s 2 ] Acceleration [m/s 2 ] 0.04 0.06 0.08

0

0 2 4

6 8 10 12 14 16 18 20

Frequency [Hz]

(b)

0.15

Sensor 1 Sensor 2

0 A cel [m/s 2 ] Acceleration [ /s 2 ] 0.05 Acceleration [m/s 2 ] 0.1 0.05 Acceleration [m/s 2 ] 0.1 0.15 0.2

0 2 4

6 8 10 12 14 16 18 20

Frequency [Hz]

(c)

Sensor 1 Sensor 2

0

0 2 4

6 8 10 12 14 16 18 20

Frequency [Hz]

Fig. 6. Fourier Amplitude Spectrum at mid-span for: (a) 20 km/h; (b) 40 km/h; and (c) 60 km/h.