|Title||Towards buildings fragility curves for assessing the risks of earthquake hazards in British Columbia|
|Author||Prieto, J A; Ventura, C E; Foschi, R O; Liam Finn, W D|
|Source||Canadian Risk and Hazards Network, 9th annual symposium, symposium abstracts; by CRHNet; 2012 p. 40|
|Alt Series||Earth Sciences Sector, Contribution Series 20130018|
|Publisher||Canadian Risk and Hazards Network|
|Meeting||Canadian Risk and Hazards Network Symposium; Vancouver; CA; October 23 to 26, 2012|
|Media||paper; on-line; digital|
|Subjects||engineering geology; modelling; earthquake risk; earthquake resistant design; earthquakes; fragility curves|
|Program||Quantitative risk assessment, Public Safety Geoscience|
|Links||CRHNet 2012 Symposium Abstract Volume|
|Links||CRHNet 2012 Symposium presentation|
|Abstract||Risk assessment methods for earthquake hazards are increasingly used as the basis for disaster mitigation planning. Tools used in the process of risk assessment like HAZUS need fragility curves to
obtain probabilities of damage and expected losses given specific ground motion parameters. Currently, HAZUS uses fragility curves developed originally for other countries, mainly the USA. Fragility curves for structural damage in terms of
Modified Mercalli Intensity, MMI, for British Columbia have been already produced. A joint research between the Earthquake Engineering Research Facility of the University of British Columbia and the Geological Survey of Canada is in process to
extend the capabilities of the existent vulnerability model by introducing fragility curves expressed in terms of spectral values, acceleration and displacements. The buildings damage fragility curves new framework is consistent with HAZUS format.
Therefore, it has the potential to be used in the process of supporting emergency and disaster mitigation planning and land use decision making in British Columbia.|
|Summary||(Plain Language Summary, not published)|
Natural Resources Canada is developing and adapting methods to evaluate earthquake risks to the community. Loss estimation methodologies, like HAZUS,
and any other risk assessment tools require models that provide the vulnerability of buildings to earthquake actions, that is to say the expected level of damage or loss to buildings when subjected to specific seismic forces. Buildings vulnerability
is expressed throughout Fragility Curves, which provide the probabilities of being in or exceeding some level or ¿damage state¿ conditional to an earthquake action. HAZUS is currently using fragility curves developed for California and the USA only.
This document presents the initial steps and processes taken by Nat Res Can, to develop and adapt fragility curves useful for buildings in British Columbia to assess earthquake risks in the region.