Evaluation of Seismic Vulnerability of Buildings Based on Damage Survey Data from the 2007 Pisco, Peru Earthquake

Abstract

The seismic vulnerability of buildings located in Pisco, Peru, was studied using damage survey data and seismic ground motion simulation. Inventory and damage information for more than 10,000 buildings was registered in survey data compiled by CISMID at Peru's National University of Engineering. The soil classes in the Pisco district were classified into three zones based on the predominant periods of microtremors at 85 sites, and damage ratios were calculated for each zone. Surface ground motions in each zone were estimated on the basis of base-rock motion simulation and shallow soil-column response analysis. Finally, fragility curves for adobe and brick masonry buildings were derived in terms of PGA and PGV. The results were compared with fragility functions developed in other studies.

Reviewing Seismic Vulnerability Dimensions: Current Trends and Methodological Challenges

“…[48]. Lastly, in Pisco they were based on: damage to the building, maximum rates of soil movement, and fragility of derivatives [49].…”

Direct displacement-based design of hysteretic bracings for retrofitting of reinforced concrete buildings

“…The high seismic vulnerability of existing buildings is continuously emphasized in survey reports conducted after severe earthquakes, such as, for example, the seismic events of Peru 2007 [1], Italy 2009 [2], Haiti 2010 [3], Chile 2010 [4], and New Zealand 2010 and 2011 [5]. To minimize the highly likely direct and indirect losses resulting from inevitable future earthquakes, it is necessary to take measures to mitigate future seismic risk.…”

Uso de Disipadores de Fluido Viscoso como medida de Reforzamiento Estructural

“…S indiscutible que, en zonas expuestas a sismos de mediana o alta magnitud, los niveles de daño a la construcción son severos e incluso llegando al colapso parcial o total de las edificaciones, siendo los más vulnerables aquellos que no son diseñados o reforzados sísmicamente, llevando consigo muchas vidas humanas y pérdidas económicas que suelen ser irrecuperables en el tiempo [1], en los últimos tiempos diversos terremotos de distinta intensidad se han manifestado en importantes ciudades del mundo, los cuales han causado muerte y destrucción [2], Perú no es la excepción puesto que está localizado en la interacción de 2 placas tectónicas (Nazca y Continental), por lo que es catalogado como un país de alta sismicidad [3], teniendo con frecuencia grandes terremotos [4], distintos estudios señalan que de haber un sismo de gran magnitud, Perú sería uno de los países más afectados [5], como ya sucedió solo por mencionar el terremoto que ocurrió en Pisco tuvo una magnitud 8.0 Mw donde 500 personas fallecieron y aproximadamente 90.000 edificaciones se desplomaron [6].…”