A fuzzy interface system to predict ultimate strength of circular concrete filled steel tubular columns

الملخص EN

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 factored design strengths predicted using the design procedure specified in the AISC 2005 and Euro code 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 Euro code 4 values.

As a result, FIS provided an efficient alternative method in predicting the ultimate strength of CCFST columns.