Author
Abstract
In this study, a model for predicting the ultimate strength of circular concrete
filled steel tubular columns (CCFST) under axial loads has been developed using
fuzzy inference system (FIS). The available experimental results for (129) specimens
obtained from open literature were used to build the proposed model. The predicted
strengths obtained from the proposed FIS model were compared with the
experimental values and with unfactored design strengths predicted using the design
procedure specified in the AISC 2005 and Eurocode 4 for CCFST columns. Results
showed that the predicted values by the proposed FIS model were very close to the
experimental values and were more accurate than the AISC 2005 and Eurocode 4
values. As a result, FIS provided an efficient alternative method in predicting the
ultimate strength of CCFST columns.
Keywords
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