tailieunhanh - Adaptive fuzzy C-mean clustering of ground motion prediction equations

The C-mean clustering algorithm is modified and adapted in order to be applicable in the current study. In addition, six groups are defined for different focal mechanisms and soil types. Then, the GMPE clustering is performed for each group and the obtained clusters are proposed and discussed. The results confirm that the obtained spectral ordinated from GMPEs of different clusters can meaningfully differed from each other. | JSEE Vol. 19, No. 1, 2017 Adaptive Fuzzy C-Mean Clustering of Ground Motion Prediction Equations Alireza Azarbakht1* and Zahra Minaei 2 1. Associate Professor, Department of Civil Engineering, Faculty of Engineering, Arak University, Iran *Corresponding Author; email: a-azarbakht@ 2. . Student, Department of Civil Engineering, Faculty of Engineering, Arak University, Iran Received: 17/02/2016 Accepted: 16/05/2017 ABSTRACT Keywords: Earthquake; GMPE; Fuzzy C-mean clustering; Un-supervised classification; Validity index; Next Generation Attenuation (NGA) Selection of Ground Motion Prediction Equations (GMPEs) within the Seismic Hazard Analysis (SHA) is an important and timely research line of inquiry. A set of 22 regional and worldwide GMPEs have been selected in this research for the purpose of classification. They are classified into clusters in which each cluster is defined to have the most dissimilarity with the other clusters as well as having the most similarity within the cluster. The C-mean clustering algorithm is modified and adapted in order to be applicable in the current study. In addition, six groups are defined for different focal mechanisms and soil types. Then, the GMPE clustering is performed for each group and the obtained clusters are proposed and discussed. The results confirm that the obtained spectral ordinated from GMPEs of different clusters can meaningfully differed from each other. 1. Introduction Ground Motion Prediction Equation (GMPE) is the key element within any seismic hazard analysis (SHA). Different GMPEs have been revised by enrichment of earthquake catalogues in which a wide variety of GMPEs are now available [1-2]. However, any GMPE depends strongly on the selected ground motion database. In other words, employing non-local GMPEs may be a challenging task [3]. Additionally, selection of a suitable GMPE is usually performed without enough attention to the compatibility of the chosen GMPE on historical site .

• Môi trường
• Evaluation of earthquake potential
• Adaptive fuzzy C mean clustering
• Ground motion prediction equations
• The C mean clustering algorithm
• Next generation attenuation
• Evaluation of earthquake potential in the zagros region
• The zagros region
• Seismic strain and seismicityparameters
• Zagros indicating less frequent moderate
• Dependence of ductility response spectra
• The seismogenic depth from finite element earthquake rupture simulations
• Finite element earthquake rupture simulations
• A particular earthquake
• The strength and elastic analysis
• Grid based probabilistic earthquake forecast for Iran
• Grid based probabilistic earthquake forecast
• Probabilistic earthquake forecast
• Spatial temporal Poisson process
• Empirical relationships based on the P wave envelop
• The P wave envelop
• Distance and magnitude estimation
• Earthquake early warning in Iran
• Earthquake Early Warning
• Estimation of the frequency dependent shear wave attenuation
• Acceleration spectra of the Ahar
• Varzeghan earthquake 2012
• The frequency dependent shear wave attenuation
• High relative risk
• Optimum seismic design of tuned story mass damper
• Multi objective genetic algorithm
• Tuned story mass damper
• The noncontrolled system
• Fragility curves for vulnerability assessment
• Steel moment resisting frames adjacent to slopes
• The probability damage growth rate
• The damage probability
• Performance assessment of steel isolated structures considering heating
• Lead core based on seismic risk
• Steel isolated structures considering heating
• Near field earthquakes
• Conventional 4 story steel special moment resisting frame
• Analytical study of interior rigid bents arrangement
• Seismic response of tall buildings
• Interior rigid bents arrangement
• Tube type lateral load resistant framed systems
• Separated framed tube based skeletons
• Optimum seismic design
• Short to mid rise steel moment resisting frames
• Uniform deformation theory
• Distribute the construction material
• Nonlinear time history analysis
• Collapse safety margin in iranian seismic design code
• Case studies of RC frame structuress
• Iranian seismic design code
• RC frame structuress
• The effects of soil structure interaction
• Seismic response of steel moment resisting frames
• Steel moment resisting frames
• The SSI effect
• Trapezoidal shaped hills induced Bystrong ground motion records
• Rigorously examine the influences
• Two dimensional analyses
• The trapezoidal shaped hills