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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 106
PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY
Edited by:
Paper 224

On the Vulnerability of Low-rise Residential Buildings based on Observations

B. Bessason1 and J.Ö. Bjarnason2

1Faculty of Civil and Environmental Engineering, University of Iceland, Reykjavik, Iceland
2Iceland Catastrophe Insurance, Reykjavik, Iceland

Full Bibliographic Reference for this paper
, "On the Vulnerability of Low-rise Residential Buildings based on Observations", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 224, 2014. doi:10.4203/ccp.106.224
Keywords: vulnerability assessment, fragility curves, non-structural damage, reinforced concrete buildings, timber buildings, monetary loss..

Summary
In May 2008 a shallow Mw6.3 earthquake occurred in South Iceland with its epicentre close to two small towns in the area. The maximum PGA was registered as 0.88g. A great deal of damage occurred but fortunately there was no loss of life or serious injuries. Insurance against natural disasters is obligatory for all buildings in Iceland. After the earthquake a field survey was carried out that covered every damaged structure in the affected area. The damage data was linked to the official land registry database, which contains detailed information on all buildings in Iceland. The data was used to develop probabilistic vulnerability functions and fragility curves for five types of low-rise building classes, which covers the majority of all properties in the region. Four intensity levels were used in the analysis. The damage data was classified into structural and non-structural damage categories and furthermore listed in a number of subcategories. The main findings were that these buildings have relatively good earthquake resistance and that the structural damage was low. Most of the monetary loss was related to non-structural cosmetic damage of interior walls that needed small repairs and paintwork and flooring that required replacement.

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