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| Comparison of different methods for calculating the second-order reinforcement of reinforced concrete columns |
| Received:October 19, 2021 Revised:December 09, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20211019001 |
| KeyWord:reinforced concrete column second order effect compression bending member nonlinear analysis section reinforcement section bearing capacity curvature |
| Author | Institution |
| 李露 |
昆明理工大学 建筑工程学院, 昆明 |
| 周东华 |
昆明理工大学 建筑工程学院, 昆明 |
| 双超 |
昆明理工大学 建筑工程学院, 昆明 |
| 何颖成 |
昆明理工大学 建筑工程学院, 昆明 |
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| Abstract: |
| To calculate the reinforcement of a reinforced concrete column,the problems of the material nonlinearity and the geometric nonlinearity must be solved,which needs iterative solution process and is inconvenient for a practical application.Based on the constitutive relationship of concrete and steel bars,the precise cross-section internal force-curvature relationship is determined according to the section strain,and the deformation curve of the member is simplified as a quadratic parabola to calculate the external effect.According to the characteristics of the accurate section internal force-curvature curve and external action curve,and the "Code for Design of Concrete Structures" (GB50010-2010) and Eurocode 2,respectively,the ultimate curvature of the cross-section is simplified respectively,and finally the nomogram for calculating the second-order total bending moment and reinforcement of the member is drawn.The comparative analysis of specific calculation examples shows that the simplification of the Eurocode is more in line with the precise values and is more economical. |
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