Seismic risk assessment for post-event management (Salo)
application to a case study; slope instability under seismic actions; Seismic vulnerability of buildings; Seismic vulnerability of lifelines; Seismic vulnerability of special buildings (e.g. churches, castle, etc); Seismic risk; Seismic scenarios; Post-earthquake Usability assessment: assessment organization and methodology based on the AEDES form.
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Seismic risk assessment for post event management
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2. Introduction to Case study and seismic scenario:
Salo’ is a town and commune in the province of Brescia in the region of Lombardy on the
banks of Lake Garda. The town has a history of seismic events. The area around the lake is a
seismic zone. On November 24, 2004 at midnight (23.59 PM, local time), a moderate
earthquake (Ml 5.2) hit the Lake Garda region, within the active fold and thrust belt of the
Southern Alps. This earthquake was felt in the whole Northern Italy, from Venice to Milan
and Genoa, and abroad, for instance in Switzerland; the epicentral area includes the town of
Salò and its surroundings, where significant damage occurred and 2202 evacuees were left
homeless.
Construction of a seismic damage scenario:
This report adopted deterministic model to analyze the seismic risks.
Maps representing the given data:
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4. Seismic damage scenario for building:
- For each building and for sake of simplicity 3 different values of vulnerability index are assigned. As it
can be observed below (Building vulnerability) map.
- Damage value for each building with specific vulnerability index (VI=10 or 30 or 50) is computed. As it
represented below (Building damage) map:
5. Seismic damage scenario for Road obstruction:
- Identification of the possible critical parts of the roads:
Build. damage ≥ 0.45, high probability of road obstructions
Build. damage ≥ 0.20 AND <0.45, medium probability of road obstructions
Build. damage < 0.20, low probability of road obstructions
As it represented below (Road Damage Scenario) map:
6. Seismic damage scenario for areas:
-Vulnerability map based on census data represented below:
-Seismic damage map for areas: