Seismic vulnerability and risk analysis of the old building stock at urban scale: application to a neighbourhood in Lisbon

The old buildings represent an important fraction of the urban fabric of the cities, which have implicit societal issues, like safety. This work deals with the seismic vulnerability assessment and risk analysis of the old building stock, with application to a neighbourhood in Lisbon. The studied nei...

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Bibliographic Details
Published in:Bulletin of earthquake engineering 2017-07, Vol.15 (7), p.2901-2937
Main Authors: Lamego, Paula, Lourenço, Paulo B., Sousa, Maria L., Marques, Rui
Format: Article
Language:English
Subjects:
Analysis
Aseismic buildings
Building damage
Buildings
Capacity
Civil Engineering
Cybersecurity
Earth and Environmental Science
Earth Sciences
Earthquake construction
Earthquake damage
Earthquakes
Economic analysis
Environmental Engineering/Biotechnology
Equivalence
Fragility
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Masonry
Mathematical models
Original Research Paper
Raw materials
Risk analysis
Risk assessment
Safety
Seismic activity
Seismic analysis
Seismic engineering
Seismic hazard
Seismic response
Seismic surveys
Stock assessment
Stone
Structural Geology
Typology
Urban areas
Vulnerability
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Summary:The old buildings represent an important fraction of the urban fabric of the cities, which have implicit societal issues, like safety. This work deals with the seismic vulnerability assessment and risk analysis of the old building stock, with application to a neighbourhood in Lisbon. The studied neighbourhood includes three frequent building typologies in Portugal, i.e. stone masonry, “Placa” and RC buildings. Reference buildings for each typology were numerically modelled using the equivalent frame method. Pushover analysis was then performed to derive the vulnerability characteristics of the reference buildings and more general building classes, i.e. capacity and fragility curves, in order to assess the seismic vulnerability of the buildings and perform a seismic risk analysis. This last analysis was performed to estimate the building damages and the economic and life losses for different earthquake scenarios. Most of the studied buildings are found to be unsafe to the considered seismic actions and will suffer severe damages with associated large losses.
ISSN:1570-761X
1573-1456
DOI:10.1007/s10518-016-0072-8