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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/11333

Title: Generation of analytical fragility curves for Ghanaian non-ductile reinforced concrete frame buildings
Authors: Adom-Asamoah, Mark
Keywords: Earthquake
seismic vulnerability
fragility curve
damage index
reinforced concrete
Issue Date: 16-May-2012
Citation: International Journal of the Physical Sciences Vol. 7(19), pp. 2735-2744, 16 May, 2012 Available online at http://www.academicjournals.org/IJPS DOI: 10.5897/IJPS11.1541 ISSN 1992 - 1950 © 2012 Academic Journals
Abstract: This study is on seismic safety evaluation of non-ductile reinforced concrete (RC) frame buildings in Ghana. Generic 3-, 4- and 6-storey non-ductile RC buildings were characterised for assessment. The generic buildings were designed according to British Standard (BS) 8110. The fragility curve parameters were generated using inelastic time history analyses for seismic demand and inelastic pushover analyses for structural capacity of the buildings. As a result of lack of real time histories in Ghana, 3 suites of 100 synthetic time history records each were generated in order to generate lower and upper bounds for inelastic dynamic response. Parameters of collapse fragility curves with 50% probability of exceedance were established for the generic non-ductile Ghanaian frame buildings using short duration near-fault like records. All the curves represent the probability of exceeding the collapse limit state as a function of the peak ground acceleration (PGA) and spectral acceleration at the fundamental mode period of the generic buildings. Using the data from the nonlinear dynamic analysis of the generic buildings under all 300 synthetic time histories, a pair of three sets of fragility curves was developed. Results obtained showed that the generic non-ductile 3 to 6 storey RC frame buildings subjected to near-fault like ground motions may record high probabilities of collapse, if they are situated in 0.25 to 0.35 g PGA seismic zones.
URI: http://hdl.handle.net/123456789/11333
ISSN: 1992 - 1950
Appears in Collections:College of Engineering

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