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A Prediction Model for the Calculation of Effective Stiffness Ratios of Reinforced Concrete Columns
| Content Provider | MDPI |
|---|---|
| Author | Das, Sourav Mansouri, Iman Choudhury, Satyabrata Gandomi, Amir Hu, Jong |
| Copyright Year | 2021 |
| Description | Nonlinear dynamic analyses of reinforced concrete (RC) frame buildings require the use of effective stiffness of members to capture the effect of cracked section stiffness. In the design codes and practices, the effective stiffness of RC sections is given as an empirical fraction of the gross stiffness. However, a more precise estimation of the effective stiffness is important as it affects the distribution of forces and various demands and response parameters in nonlinear dynamic analyses. In this study, an evolutionary computation method called gene expression programming (GEP) was used to predict the effective stiffness ratios of RC columns. Constitutive relationships were obtained by correlating the effective stiffness ratio with the four mechanical and geometrical parameters. The model was developed using a database of 226 samples of nonlinear dynamic analysis results collected from another study by the author. Subsequent parametric and sensitivity analyses were performed and the trends of the results were confirmed. The results indicate that the GEP model provides precise estimations of the effective stiffness ratios of the RC frames. |
| Starting Page | 1792 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma14071792 |
| Journal | Materials |
| Issue Number | 7 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-04-05 |
| Access Restriction | Open |
| Subject Keyword | Materials Civil Engineering Effective Stiffness Ratio Reinforced Concrete Columns Performance-based Design Experimental Data Gene Expression Programming Unified Performance-based Design |
| Content Type | Text |
| Resource Type | Article |
