PSI - Issue 44

Manuel Capogna et al. / Procedia Structural Integrity 44 (2023) 705–712 Manuel Capogna et al./ Structural Integrity Procedia 00 (2022) 000–000

708

4

ACs SF,S,I&L

ACs I,L

Partial Seismical ACs

Structural, Foundational AC

Idraulical AC

H M-H M M-L L

H M-H M M-L L

Hazard

H M-H M M-L L

Seismical AC

Landslide AC

H M-H M M-L L

H M-H M M-L L

Exposure

H M-H M M-L L

Idraulical & Landslide AC

H M-H M M-L L

Vulnerability

H M-H M M-L L

ILAC Combination Tables

Final Combination Tables

SAC Combination Tables

Idraulical and Landslide AC

H M-H M M-L L

Overall AC

H M-H M M-L L

Seismical AC

H M-H M M-L L

Fig. 2. From left to right, a schematic representation of Seismic AC determination, Hydraulic and Landslide ACs combination and Overall AC determination. Details can be found in Bridge Guidelines (MIMS, 2020) 3. The computational prototype The prototype of the automated model was created on Microsoft Excel in the Office 365 cloud version. The paths and logical functions necessary to calculate the hazard, vulnerability and exposure have been defined on a first sheet that is the calculation engine of the model and the interface have been defined on a second sheet that is the user interface, pre-processor and post-processor all in-one. The model developed is easily extensible to interoperable platforms and architectures based on Web Open Gis already successful tested (Blaso et al., 2022, Baratono et al.,2022, Santarsiero, 2021, Dayan, 2022, Pessina, 2009, Matassoni, 2017) allowing large scale territorial classifications 3.1. Calculation of the seismic hazard For the evaluation of the seismic hazard, reference is made to the Italian Technical Standards for Constructions in force (Legislative Decree of New Italian Construction Standard - NTC, 2018), assuming as significant parameters the peak ground acceleration, with a probability of an excess of 10% in 50 years and referred to rigid soils, the topographic category and the stratigraphic amplification evaluated through the simplified approach of the subsoil category. They are therefore parameters linked exclusively to the geomorphological and stratigraphic characteristics of the construction site. For specific definitions, it is possible to refer at the NTC.

1 Determination of Seismic Hazard

Topographic Category

0,05 t4

g

Peak Ground Acceleration (Pga)

Topographic Category

t1 t2 t3 t4

Pga, Ti

M

Soil Category AB CDE

Soil Category

CDE

Seismical Hazard AC

M-H

Fig. 3. Determination of the seismic hazard.