|SCIENTIFIC DISCIPLINARY SECTOR||ICAR/09|
The impact of natural hazards on the built environment is not limited to direct damage but involves indirect damage, linked to the interruption of production and social activities. Modern risk analyzes must consider these aspects and evaluate the resilience of the community, namely: 1) the ability to limit the damage produced by the event (robustness of buildings); 2) better manage the emergency phases; 3) react promptly, favoring a rapid return to normality (limiting the "down time").
After a framing of the problem with regard to the various natural hazards (earthquake, floods, fires, etc.), the course will focus on seismic resilience.
Seismic risk analysis of the built environment in relation to natural events: hazard, exposure and vulnerability. Probabilistic seismic hazard assessment: occurrence of earthquakes, mitigation laws. Taxonomy and classification of the exposed assets. Vulnerability models: observational (macroseismic method), mechanical based (analytical or numerical) and hybrid methods. Evaluation of fragility curves from nonlinear dynamic analyzes (IDA, MSA and cloud method). Probabilistic framework for the calculation of risk. Analysis of economic consequences and losses (direct and indirect damage). The resilience of the built environment and the society: robustness and recovery time. Risk assessment, prevention and management of the seismic emergency in the case of monumental building: LV1 models, vulnerability and damage survey forms.
The course will be carried out with a strong involvement of the students.
In the lectures, since the subject is constantly evolving, the sites of the main world institutions (for example UNESCO) that have developed programmatic manifestos on resilience (Sendai Framework for Disaster Risk Reduction) will be visited.
In addition, an exercise will be carried out through the IRMA (Italian Risk Maps) platform, developed by EUCENTRE for Civil Protection, in which students will be able to perform a risk analysis on different territorial areas (municipalities, provinces, regions): 1) implement the fragility curves of the different types of buildings; 2) estimate the expected damage to buildings (number of collapses and unusable buildings), the consequences for the population (deaths and serious injuries, homelessness) and the costs necessary for reconstruction; 3) compare different prevention intervention strategies, through cost-benefit analyzes.
Topic 1 – Resilience and built environment
Topic 2 – Resilience and its components
§ Risk assessment and review of the emergency management plan promoted by Institution (Department of Civil Protection), in the case of earthquake for example: IOPACLE e SMAV
§ Risk mitigation solution: insurance, incentives, …
§ Strengthening interventions which favor the localization of the damage and repairability in the case of earthquake
§ Definition of provisional works
§ Post-event damage survey aimed to the administration of state funding and project control
3. Post-event: Recovery
Topic 3 – Resilience: A risk management approach
3. Vulnerability: Damage and losses conditional on a given level of intensity for assets with certain characteristics
· From damage to losses: direct and indirect losses
· Probabilistic risk assessment independent of the peril considered, only the details are different
Topic 4 – Hazard (occurence and intensity)
Topic 5 – Exposure information
Topic 6 – Vulnerability to the earthquake I: the post-earthquake damage survey
Topic 7 – Vulnerability to the earthquake II: The seismic response of the structure
Topic 8 – Vulnerability to the earthquake III: The fragility curves
· Different approach for the derivation of fragility curves: mechanical (analytical and numerical ATC 58), observational, empirical, macroseismic, hybrid, expert opinon (ATC 13) à Advantages and disadvantages
Topic 9 – Seismic risk analysys
Topic 10 - The IRMA (Italian Risk MAps) v2 platform
· Computer classroom exercise:
Topic 11 – Economic loss analysis
Topic 12 – Resilience improvement: Risk mitigation strategy at territorial scale
Topic 13 – SISMABONUS: Italian “Guidelines for the seismic risk classification of constructions”
Course notes, available on AulaWeb.
Recording of the lessons on Teams.
References to journal papers provided by the teacher at the beginning of the year.
SERGIO LAGOMARSINO (President)
All class schedules are posted on the EasyAcademy portal.
The oral exam consists in the discussion of a report carried out by the student, relating to a seismic risk analysis on a territorial scale, and in questions on the program developed in the course.
|04/07/2023||09:00||GENOVA||Orale||Please confirm to me by email your availability for the given dates or ask for an additional date if needed.|
All course information is given in the classroom, through Aulaweb or on Teams.