PSI - Issue 62

Carlo Pettorruso et al. / Procedia Structural Integrity 62 (2024) 677–684 Carlo Pettorruso/ Structural Integrity Procedia 00 (2019) 000 – 000

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territory into 4 zones according to the horizontal acceleration with a probability of exceedance equal to 10% in 50 years. For the first three zones a municipality was chosen to define the seismic scenario: for zone 1, Reggio Calabria (Table 3); for zone 2, Sirmione (Table 4); for zone 3 Pavia (Table 5). For all zones, topographic class T1 and soil type B were assumed. In Figure 6, the assumed design spectra for the parametric analysis are represented.

Fig. 6. Seismic scenarios spectra

Table 3 . Reggio Calabria Seismic Parameters

Table 4. Sirmione Seismic Parameters

Dependent Parameters

Dependent Parameters

a g F 0

S η

0,205 2,481 0,278 1,196 1,421

[g] [-] [s] [-] [-] [s] [-]

1,196

[-] [-] [s] [s] [s]

a g F 0

S η

0,359 2,481 0,388 1,046 1,329

[g] [-] [s] [-] [-] [s] [-]

1,046

[-] [-] [s] [s] [s]

1

1

T* C

T B T C T D

T* C

T B T C T D

0,132 0,395

0,172 0,516 3,036

S S C C S T

S S C C S T

2,42

1

1

ξ

0,05

ξ

0,05

Table 5. Pavia

Seismic Parameters

Dependent Parameters

a g F 0

S η

0,092 2,498 0,285

[g] [-] [s] [-] [-] [s] [-]

1,2

[-] [-] [s] [s] [s]

1

T* C

T B T C T D

0,134 0,403 1,968

S S

1,2

C C S T

1,414

1

ξ

0,05

4. Results By applying the proposed procedure, for the three pile heights and three seismic scenarios, the results summarized in Table 6 are obtained. For each seismic scenario and for each height, the target acceleration, the as-built acceleration, and the equivalent substructure acceleration are reported; in the last two columns the results of the check of the first and second conditions are presented.