Fuzzy-Logic Tree Approach for Seismic Hazard Analysis

N. Tahernia
2014 International Journal of Engineering and Technology  
This study presents an approach for seismic hazard analysis based on logic tree and fuzzy sets theory. To accomplish seismic hazard analysis in the framework of fuzzy sets theory, all of the variables are first converted into fuzzy sets using α-cut method. Calculations have been made for various combinations of them and also applying logic tree approach. Extracted output in the framework of fuzzy are defuzzified using mean of maxima method. The method is applied to Tehran site and the hazard
more » ... e and the hazard curve is obtained. Peak ground accelerations are estimated to be 0.17g and 0.34g for 10% and 63% probability of exceedance in 50-year, respectively. Outcomes of this study would contribute for the quick and better estimation of the seismic design of structures. Index Terms-Fuzzy method, logic tree, probabilistic approach, seismic hazard analysis.
doi:10.7763/ijet.2014.v6.692 fatcat:3xpbqbqry5gghhmasbn6sigjoa