Loading...
2 results
Search Results
Now showing 1 - 2 of 2
- Efficiency and cost-benefit analysis of seismic strengthening techniques for old residential buildings in LisbonPublication . Pedreira Marques, Rui Filipe; Lamego, Paula; Lourenco, Paulo; Sousa, Maria L.This paper presents a study on the techno-economic efficiency of seismic strengthening techniques for old residential buildings, with application to construction typologies in Lisbon (stone masonry and Placa buildings). A comprehensive review on strengthening techniques and implications for the seismic behavior is made. Different strengthening schemes are implicitly simulated within equivalent frame models of the representative buildings. Then, pushover analysis is applied in order to compare the seismic performance of the buildings, before and after strengthening. A cost-benefit analysis of the strengthening solutions is finally performed, comparing the economic benefit gained by reducing the seismic damage, against the intervention cost.
- Seismic vulnerability and risk analysis of the old building stock at urban scale: application to a neighbourhood in LisbonPublication . Lamego, Paula; Lourenco, Paulo B.; Sousa, Maria L.; Marques, RuiThe 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.